MCP servers › io.github.cherami-mail › cherami-mcp

MCP server · registry snapshot 2026-10-23 · last tested 2026-10-23

io.github.cherami-mail/cherami-mcp

Email inboxes for recurring agent work. Read, search, reply, draft and organize correspondence. — the publisher's description

1 of 2 record checks metRead-only · tools listed 2026-10-23Topic: communication-and-social · AI-classifiedversion 1.0.0streamable HTTP42 tools

Summary

io.github.cherami-mail/cherami-mcp is a remote MCP server listed in the official MCP registry at version 1.0.0. On 2026-10-23 ProtocolProbe connected to it in read-only mode and read its inventory: 42 tools, 0 resources and 0 prompts.

Record checks

1 of 2 record checks met · 7 do not apply

met: Registry entry is active and says how to run it
not met: Source repository link opens
not applicable: Repository is not archived
not applicable: Code pushed to the repository in the 90 days before our check
not applicable: Repository publishes a security policy (SECURITY.md)
not applicable: Package names its licence with a standard (SPDX) identifier
not applicable: The version the registry lists can be installed and is not withdrawn
not applicable: npm package carries build provenance (attestation)
not applicable: No known critical or high advisory in the package or its dependencies

Not ranked by downloads: a remote server publishes no download figure
Not ranked by stars: no public GitHub repository

From public records, not a safety rating. Each check with its reason · Is it safe to install?

Key facts

Runs: remote (hosted by the publisher)
Transport: streamable HTTP
Sign-in: none needed to open a session
Tools: 42
Described as changing data: 20 of 42 toolsAI-classified
Mainly works on: email, chat or social accountsAI-classified
Topic: communication-and-socialAI-classified
Last tested: 2026-10-23

Add to your client

Observed fact

This server accepted a session without any credential and lists 20 tools whose name or declaration suggests they change data (create_inbox, update_inbox, create_draft, update_draft, send_draft and 15 more). That is our reading of the names; we did not call them. Source: our connection, 2026-10-23.

Worth knowing before you connect it

20 tools are described as changing something (create_inbox, update_inbox, create_draft, …): our AI model's reading of the descriptions, not something we tested, and the server opened a session without any credential. We did not call them.

Each line comes from a section below, with its source and date.

How fresh this is

Live-tested: yes, a real session (not a text-only review)
Last tested: 2026-10-23
Mode: read-only (no tool calls)
Latest version: 1.0.0, published 2026-10-04 (registry, as of the 2026-10-23 snapshot)
First listed version: 2026-10-04 (earliest version still in the registry; older removed versions would be earlier)
Registry data: snapshot 2026-10-23
Package and repository: checked 2026-10-23
Engine: mcp-runtime-engine@0.1.0 · sdk@1.32.0

Changes since the last refresh

New in the registry: not in the list of 2026-10-04, listed on 2026-10-23 with version 1.0.0 (published 2026-10-04).

Source: the official MCP Registry list on 2026-10-04 and on 2026-10-23.

What it is

What does this server offer?

Observed inventory

42tools

0resources

0prompts

What it mainly works on, as our AI model read its tool descriptions: email, chat or social accounts.

20 of 42 tools are described as changing something (creating, editing, deleting, sending or running). For 2 the reading was uncertain, so no mark is shown.

get_service_infoon 54 other serversreads or searches
“Explain Cherami when asked about the service.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
Takes no inputs.
get_accounton 97 other serversreads or searches
“Check the account's sending and deletion permissions and how many more inboxes it can create.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
Takes no inputs.
list_inboxeson 1 other serverreads or searches
“Find the account's inbox IDs and addresses, with remaining inbox slots.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
Takes no inputs.
create_inboxon 10 other serverscreates or changes datadescribed as changing data
“Create an @cherami.to inbox at an address the human or the assignment authorizes.”
Publisher declares: read-only no · destructive no · idempotent no · open-world no
4 inputs, 1 required
- local_partstringrequired“The part before @cherami.to, permanent once created: 1–64 ASCII letters, digits, hyphens or underscores, starting and ending with a letter or digit.”
- namestring or null“Optional internal name, visible across the account but not to recipients.”
- sender_namestring or null“Optional display name recipients see on outgoing mail.”
- idempotency_keystring“Makes a retry safe: repeating the call with the same key and identical arguments within 24 hours of the first request returns the inbox already created.”
get_inboxon 18 other serversreads or searches
“Read an inbox's address, internal name and outgoing sender name.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
1 input, 1 required
- inbox_idstringrequired
get_receiving_policyreads or searches
“List the senders and domains blocked from this inbox; mail from them does not arrive.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
1 input, 1 required
- inbox_idstringrequired
get_sending_policyreads or searches
“Check which recipients this inbox may send to, before preparing a send.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
1 input, 1 required
- inbox_idstringrequired
update_inboxcreates or changes datadescribed as changing data
“Change an inbox's internal name or outgoing sender name.”
Publisher declares: read-only no · destructive no · idempotent yes · open-world no
3 inputs, 1 required
- inbox_idstringrequired
- namestring or null“Internal name, not shown to recipients.”
- sender_namestring or null“Display name recipients see on outgoing mail from now on.”
list_messageson 36 other serversreads or searches
“Search or list an inbox's received mail; all supplied filters must match.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
14 inputs, 1 required
- inbox_idstringrequired
- limitinteger
- cursorstring“Continue with next_cursor from the previous result, keeping the same filters.”
- labels_allarray“Require every listed label.”
- labels_anyarray“Require at least one listed label.”
- labels_nonearray“Exclude messages with any listed label.”
- querystring“Words or quoted phrases that must all appear in the subject or body.”
- fromstring“Exact From address, case-insensitive.”
- recipientstring“Exact To, Cc or Bcc address, case-insensitive.”
- subjectstring“Literal, case-insensitive substring of the subject.”
- afterstring“Received or sent at or after this time: YYYY-MM-DDTHH:mm:ss, optional 1–3 fractional digits, then Z or ±HH:mm.”
- beforestring“Received or sent before this time: YYYY-MM-DDTHH:mm:ss, optional 1–3 fractional digits, then Z or ±HH:mm.”
- orderstring“Defaults to newest.”
- include_contentboolean“Also return each body (up to 2,000 characters), attachment metadata and reply suggestion.”
count_messagesreads or searches
“Count received messages matching the same search and filters as list_messages.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
10 inputs, 1 required
- inbox_idstringrequired
- labels_allarray“Require every listed label.”
- labels_anyarray“Require at least one listed label.”
- labels_nonearray“Exclude messages with any listed label.”
- querystring“Words or quoted phrases that must all appear in the subject or body.”
- fromstring“Exact From address, case-insensitive.”
- recipientstring“Exact To, Cc or Bcc address, case-insensitive.”
- subjectstring“Literal, case-insensitive substring of the subject.”
- afterstring“Received or sent at or after this time: YYYY-MM-DDTHH:mm:ss, optional 1–3 fractional digits, then Z or ±HH:mm.”
- beforestring“Received or sent before this time: YYYY-MM-DDTHH:mm:ss, optional 1–3 fractional digits, then Z or ±HH:mm.”
get_messageon 21 other serversreads or searches
“Read a received email; use get_thread for its conversation.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
2 inputs, 1 required
- message_idstringrequired
- formatstring“readable (default) gives the newly written reply text when it can be extracted.”
list_threadson 27 other serversreads or searches
“Find an inbox's conversations containing at least one message that matches all supplied filters.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
13 inputs, 1 required
- inbox_idstringrequired
- limitinteger
- cursorstring“Continue with next_cursor from the previous result, keeping the same filters.”
- labels_allarray“Require every listed label.”
- labels_anyarray“Require at least one listed label.”
- labels_nonearray“Exclude messages with any listed label.”
- querystring“Words or quoted phrases that must all appear in the subject or body.”
- fromstring“Exact From address, case-insensitive.”
- recipientstring“Exact To, Cc or Bcc address, case-insensitive.”
- subjectstring“Literal, case-insensitive substring of the subject.”
- afterstring“Received or sent at or after this time: YYYY-MM-DDTHH:mm:ss, optional 1–3 fractional digits, then Z or ±HH:mm.”
- beforestring“Received or sent before this time: YYYY-MM-DDTHH:mm:ss, optional 1–3 fractional digits, then Z or ±HH:mm.”
- orderstring“Defaults to newest.”

Show 30 more tools

get_threadon 34 other serversreads or searches
“Read a conversation's received and sent messages.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
4 inputs, 1 required
- thread_idstringrequired
- limitinteger
- cursorstring“Continue with next_cursor from the previous result, keeping the same filters.”
- formatstring“readable (default) gives the newly written reply text when it can be extracted.”
read_raw_messagereads or searches
“Read a received email's original MIME source as base64 chunks.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
3 inputs, 1 required
- message_idstringrequired
- offsetinteger“Start at 0; continue with the returned next_offset until null.”
- max_bytesinteger“Bytes per chunk.”
read_attachmenton 4 other serversreads or searches
“Read a received email's attachment as base64 chunks.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
4 inputs, 2 required
- message_idstringrequired
- attachment_idstringrequired“Attachment ID from this message's metadata, not a filename.”
- offsetinteger“Start at 0; continue with the returned next_offset until null.”
- max_bytesinteger“Bytes per chunk.”
create_drafton 19 other serverscreates or changes datadescribed as changing data
“Save an email without sending it, to continue or review later.”
Publisher declares: read-only no · destructive no · idempotent no · open-world no
12 inputs, 1 required
- inbox_idstringrequired
- toarray
- ccarray
- bccarray
- subjectstring
- textstring“Plain-text body; may be empty while drafting.”
- htmlstring or null“HTML alternative; null clears it.”
- in_reply_tostring or null“Cherami ID of the received or accepted sent message in this inbox being replied to; null clears it.”
- attachmentsarray“Files with padded base64 content.”
- labelsarray“Labels the sent copy gets when the draft is sent.”
- sourceobject“Prepare from a ready received or accepted sent message in this inbox.”
- idempotency_keystring“Makes a retry safe: repeating the call with the same key and identical arguments within 24 hours of the first request returns the draft already created.”
list_draftson 11 other serversreads or searches
“List an inbox's drafts, most recently created first.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
4 inputs, 1 required
- inbox_idstringrequired
- limitinteger
- cursorstring“Continue with next_cursor from the previous result, keeping the same filters.”
- statestring“draft (default): editable drafts.”
get_drafton 9 other serversreads or searches
“Read a draft's saved recipients, bodies, reply target and attachments, including file bytes.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
1 input, 1 required
- draft_idstringrequired
update_drafton 12 other serverscreates or changes datadescribed as changing data
“Edit an unsent draft.”
Publisher declares: read-only no · destructive no · idempotent no · open-world no
10 inputs, 1 required
- draft_idstringrequired
- toarray
- ccarray
- bccarray
- subjectstring
- textstring“Plain-text body; may be empty while drafting.”
- htmlstring or null“HTML alternative; null clears it.”
- in_reply_tostring or null“Cherami ID of the received or accepted sent message in this inbox being replied to; null clears it.”
- attachmentsarray“Files with padded base64 content.”
- labelsarray“Labels the sent copy gets when the draft is sent.”
send_drafton 4 other serverssends messagesdescribed as changing data
“Send a saved draft when the human or the assignment authorizes it.”
Publisher declares: read-only no · destructive yes · idempotent yes · open-world yes
2 inputs, 1 required
- draft_idstringrequired“Once a send has returned a status, repeating the call with the same draft_id returns that attempt and never sends a second copy.”
- idempotency_keystring“Optional and not needed for a safe retry.”
delete_drafton 5 other serversdeletesdescribed as changing data
“Permanently delete a draft, after confirming it with the human.”
Publisher declares: read-only no · destructive yes · idempotent yes · open-world no
1 input, 1 required
- draft_idstringrequired
send_messageon 95 other serverssends messagesdescribed as changing data
“Send an email to recipients the assignment authorizes, or, with in_reply_to, a reply whose recipients and subject you choose.”
Publisher declares: read-only no · destructive yes · idempotent no · open-world yes
11 inputs, 4 required
- inbox_idstringrequired“Inbox to send from.”
- idempotency_keystring“Makes a retry safe: repeating the call with the same key and identical arguments within 24 hours of the first request returns the original attempt instead of s…”
- labelsarray“Labels for the saved sent copy; recipients do not see them.”
- toarrayrequired“To recipients.”
- ccarray“Cc recipients.”
- bccarray“Bcc recipients; other recipients do not see them.”
- subjectstringrequired
- textstringrequired“Plain-text message body.”
- htmlstring“Optional HTML alternative to the plain-text body.”
- in_reply_tostring“For a reply: the Cherami ID of a received or accepted sent message in this inbox, not an RFC Message-ID.”
- attachmentsarray
reply_messageon 5 other serverssends messagesdescribed as changing data
“Reply to a message, with recipients and subject derived from it.”
Publisher declares: read-only no · destructive yes · idempotent no · open-world yes
7 inputs, 3 required
- inbox_idstringrequired“Inbox to send from; it must hold the source message.”
- message_idstringrequired“Ready received or accepted sent message in this inbox.”
- idempotency_keystring“Makes a retry safe: repeating the call with the same key and identical arguments within 24 hours of the first request returns the original attempt instead of s…”
- labelsarray
- textstringrequired“Your response; original history is not automatically quoted.”
- htmlstring“Optional HTML alternative to your response.”
- attachmentsarray“New files for this reply; original attachments are not copied.”
reply_all_messagesends messagesdescribed as changing data
“Reply to everyone visible on a message except this inbox; original Bcc recipients are never included.”
Publisher declares: read-only no · destructive yes · idempotent no · open-world yes
7 inputs, 3 required
- inbox_idstringrequired“Inbox to send from; it must hold the source message.”
- message_idstringrequired“Ready received or accepted sent message in this inbox.”
- idempotency_keystring“Makes a retry safe: repeating the call with the same key and identical arguments within 24 hours of the first request returns the original attempt instead of s…”
- labelsarray
- textstringrequired“Your response; original history is not automatically quoted.”
- htmlstring“Optional HTML alternative to your response.”
- attachmentsarray“New files for this reply; original attachments are not copied.”
forward_messageon 4 other serverssends messagesdescribed as changing data
“Forward a message to recipients the assignment authorizes, with an optional note.”
Publisher declares: read-only no · destructive yes · idempotent no · open-world yes
9 inputs, 3 required
- inbox_idstringrequired“Inbox to send from; it must hold the source message.”
- message_idstringrequired“Ready received or accepted sent message in this inbox.”
- idempotency_keystring“Makes a retry safe: repeating the call with the same key and identical arguments within 24 hours of the first request returns the original attempt instead of s…”
- labelsarray
- toarrayrequired
- ccarray
- bccarray
- notestring“Plain-text note placed before the original content.”
- include_attachmentsboolean“Defaults to true, including embedded images.”
list_sentreads or searches
“Search or list an inbox's sent mail; all supplied filters must match.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
13 inputs, 1 required
- inbox_idstringrequired
- limitinteger
- cursorstring“Continue with next_cursor from the previous result, keeping the same filters.”
- labels_allarray“Require every listed label.”
- labels_anyarray“Require at least one listed label.”
- labels_nonearray“Exclude messages with any listed label.”
- querystring“Words or quoted phrases that must all appear in the subject or body.”
- fromstring“Exact From address, case-insensitive.”
- recipientstring“Exact To, Cc or Bcc address, case-insensitive.”
- subjectstring“Literal, case-insensitive substring of the subject.”
- afterstring“Received or sent at or after this time: YYYY-MM-DDTHH:mm:ss, optional 1–3 fractional digits, then Z or ±HH:mm.”
- beforestring“Received or sent before this time: YYYY-MM-DDTHH:mm:ss, optional 1–3 fractional digits, then Z or ±HH:mm.”
- orderstring“Defaults to newest.”
get_sent_messagereads or searches
“Read a sent email and its sending status.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
2 inputs, 1 required
- message_idstringrequired
- formatstring“readable (default) gives the newly written reply text when it can be extracted.”
update_message_labelscreates or changes datadescribed as changing data
“Add or remove labels on a received message.”
Publisher declares: read-only no · destructive no · idempotent yes · open-world no
3 inputs, 1 required
- message_idstringrequired
- add_labelsarray
- remove_labelsarray
update_sent_message_labelscreates or changes datadescribed as changing data
“Add or remove labels on a sent message.”
Publisher declares: read-only no · destructive no · idempotent yes · open-world no
3 inputs, 1 required
- message_idstringrequired
- add_labelsarray
- remove_labelsarray
list_labelson 14 other serversreads or searches
“Find labels used in an inbox, alphabetically, with message counts.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
4 inputs, 1 required
- inbox_idstringrequired
- limitinteger
- cursorstring“Continue with next_cursor from the previous result, keeping the same filters.”
- prefixstring“Filter by a literal, case-sensitive label prefix.”
bulk_update_message_labelscreates or changes datadescribed as changing data
“Apply the same label changes to up to 100 received messages.”
Publisher declares: read-only no · destructive no · idempotent yes · open-world no
3 inputs, 1 required
- message_idsarrayrequired
- add_labelsarray
- remove_labelsarray
bulk_update_sent_message_labelscreates or changes datadescribed as changing data
“Apply the same label changes to up to 100 sent messages.”
Publisher declares: read-only no · destructive no · idempotent yes · open-world no
3 inputs, 1 required
- message_idsarrayrequired
- add_labelsarray
- remove_labelsarray
update_thread_labelscreates or changes datadescribed as changing data
“Add or remove labels on every message currently in a conversation, received and sent.”
Publisher declares: read-only no · destructive no · idempotent no · open-world no
3 inputs, 1 required
- thread_idstringrequired
- add_labelsarray
- remove_labelsarray
get_outbound_quotareads or searches
“Check the sending allowance shared by all the account's inboxes.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
Takes no inputs.
delete_messageon 10 other serversdeletesdescribed as changing data
“Delete a received email after confirming the exact message with the human.”
Publisher declares: read-only no · destructive yes · idempotent yes · open-world no
1 input, 1 required
- message_idstringrequired
delete_sent_messagedeletesdescribed as changing data
“Delete a sent email's saved copy after confirming the exact message with the human.”
Publisher declares: read-only no · destructive yes · idempotent yes · open-world no
1 input, 1 required
- message_idstringrequired
delete_threadon 2 other serversdeletesdescribed as changing data
“Delete every message currently in a conversation, received and sent, after confirming the conversation and its full scope with the human.”
Publisher declares: read-only no · destructive yes · idempotent no · open-world no
1 input, 1 required
- thread_idstringrequired
delete_inboxon 4 other serversdeletesdescribed as changing data
“Permanently delete an inbox and all its mail, after confirming the exact address and full scope with the human.”
Publisher declares: read-only no · destructive yes · idempotent yes · open-world no
1 input, 1 required
- inbox_idstringrequired
list_trashon 4 other serversreads or searches
“List an inbox's deleted emails that can still be restored, most recently deleted first.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
3 inputs, 1 required
- inbox_idstringrequired
- limitinteger
- cursorstring“Continue with next_cursor from the previous result, keeping the same filters.”
restore_messagecreates or changes datadescribed as changing data
“Restore a received email from Trash to its inbox, conversation and search results, with its labels.”
Publisher declares: read-only no · destructive no · idempotent yes · open-world no
1 input, 1 required
- message_idstringrequired“ID of a received entry from list_trash.”
restore_sent_message
“Restore a sent email's copy from Trash to its sent mail, conversation and search results, with its labels.”
Publisher declares: read-only no · destructive no · idempotent yes · open-world no
1 input, 1 required
- message_idstringrequired“ID of a sent entry from list_trash.”
submit_feedbackon 138 other servers
“Send Cherami a problem report, suggestion or request for a higher allowance.”
Publisher declares: read-only no · destructive yes · idempotent no · open-world yes
2 inputs, 1 required
- bodystringrequired“The message to Cherami.”
- titlestring“Optional short subject.”

Each quoted sentence is the first sentence of the publisher’s own description. The kind of tool and the “changes data” mark are our AI model’s reading of that description, not something we tested: two differently worded runs had to agree, otherwise no label is shown, and nobody has checked them by hand. A tool without the “changes data” mark is described as only reading, searching or calculating, or the two runs did not agree. No tool was called. Read the publisher’s full description before relying on it. “Publisher declares” lists the hints the server itself sends with the tool (MCP annotations: read-only, destructive, idempotent, open-world); they are the publisher's claims, not checked by us. Inputs are the parameters in the tool's own input schema: name, declared type, whether it is required, and the first sentence of its description. Read 2026-10-23.

How well are its tools described?

Features #4 and #5

How clearly this server's own tool descriptions say what a tool does, and how consistent its tool list is. The first part is an AI model's yes/no reading of each description; the second part is counted. We do not turn it into a grade.

Descriptions

AI reading of each description

Says what the tool does: 100% of 40 tools
Says what it returns: 46% of 37 tools
States limits, defaults or errors: 14% of 28 tools
Says when to use it: 3% of 29 tools
Items covered per tool: 1.9 of 4 on average

Counted from the listing

Parameters with a description: 63% of 169
Tools with a description: 100% of 42
Typical description length: 121 characters

The tool set

Counted from the listing

Tools: 42
Size of the list: about 37,479 tokens for an agent to load (characters ÷ 4)
Naming: 42 of 42 names use snake_case

AI reading: easy to mix up

No pair found.

The AI items cover 40 of 42 tools: for a tool where two differently worded runs disagreed, that item is left out. They were not checked by hand, and no tool was called. “Easy to mix up” means two tools whose names or descriptions overlap without saying how they differ; the AI found none, comparing tools within groups of 40. We do not rate whether the tool set is complete or whether side effects are spelled out, because our AI reading of those was not reliable enough.

How do I add it to my client?

Config from the registry entry

From the remote endpoint (Streamable HTTP)

We connected to this URL on 2026-10-23 (a read-only session: no tool was called).

Add to CursorAn install link in the format Cursor documents, holding the Cursor config below.

Claude Desktop or claude.ai

Settings → Connectors → Add custom connector, then paste:
https://cherami.to/mcp

Cursor · .cursor/mcp.json in a project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "cherami-mcp": {
      "url": "https://cherami.to/mcp"
    }
  }
}

VS Code · .vscode/mcp.json

{
  "servers": {
    "cherami-mcp": {
      "type": "http",
      "url": "https://cherami.to/mcp"
    }
  }
}

VS Code (command line) · Bash or zsh terminal (macOS, Linux)

code --add-mcp '{"name":"cherami-mcp","type":"http","url":"https://cherami.to/mcp"}'

Claude Code

claude mcp add --transport http cherami-mcp https://cherami.to/mcp

Try it in the MCP Inspector · runs on your machine, opens in your browser · Node 22.19+

npx @modelcontextprotocol/inspector@2.11.0 --server-url https://cherami.to/mcp --transport http

The server runs on the operator's infrastructure; it may ask you to sign in when you first connect.
The MCP Inspector lists the server's tools, resources and prompts; a tool you call there runs for real.

Built from the server's registry entry with each client's documented format (checked 2026-10-14; the Cursor link and the VS Code command 2026-10-19; the MCP Inspector command 2026-10-21). Values in < > are yours to fill in; this page never contains a key. Where the server needs a setting the entry does not declare, it can still fail to start.

Does the registry listing match what we found?

Feature #6

The registry verifies a package once, when it is published, and does not re-check it. A difference below is about the listing, not a judgement of the publisher.

Registry says	We found	Result	Source · date
Remote endpoint cherami.to/mcp	Session opened	matches	our test · 2026-10-23
No credential declared as required	Opened a session without any credential	matches	our test · 2026-10-23

Choosing

Record checks

Public records · not a safety rating

1 of 2 record checks met · 7 do not apply

Not ranked by downloads: a remote server publishes no download figure
Not ranked by stars: no public GitHub repository

MetRegistry entry is active and says how to run itActive, with a package or a remote address.
Not metSource repository link opensThe registry entry gives no repository link.
Does not applyRepository is not archivedNo public GitHub repository to read.
Does not applyCode pushed to the repository in the 90 days before our checkNo public GitHub repository to read.
Does not applyRepository publishes a security policy (SECURITY.md)No public GitHub repository to read.
Does not applyPackage names its licence with a standard (SPDX) identifierRemote server: it ships no package.
Does not applyThe version the registry lists can be installed and is not withdrawnRemote server: it ships no package.
Does not applynpm package carries build provenance (attestation)Remote server: it ships no package.
Does not applyNo known critical or high advisory in the package or its dependenciesRemote server: it ships no package.

Read from public records only: the registry entry, npm/PyPI, GitHub and advisory databases, checked 2026-10-23. No tool was called. Only “met” and “not met” are counted, so the total differs between servers; a check that does not apply or that we could not run is listed, never counted against it. It is not a safety rating. How each check works · Leaderboards

Common questions about io.github.cherami-mail/cherami-mcp

Answered from the data above

Is io.github.cherami-mail/cherami-mcp safe to install?

We do not rate servers as safe or unsafe. 1 of its 2 applicable record checks are met (facts from public records, each listed on this page). What the records show: 20 of its tools describe changing data (our AI model's reading of the descriptions). These are facts with their sources on this page, not a safety guarantee, and we did not run its tools.

Does io.github.cherami-mail/cherami-mcp need an API key or sign-in?

It opened a session without any credential on 2026-10-23. The registry entry declares no required credential; no declaration is not a guarantee.

Has io.github.cherami-mail/cherami-mcp been security tested?

Partly. 3 of the 15 checks that apply to it were exercised. It accepted a session without any credential and lists tools whose names suggest they change data. We did not call them. No security verdict is published before verification.

What can io.github.cherami-mail/cherami-mcp do?

It lists 42 tools. In our AI model's reading of their descriptions (two runs had to agree, nobody checked it by hand), they include tools that read or search, create or change data, delete and send messages. We did not call any tool, so this describes the text, not the behaviour.

Can io.github.cherami-mail/cherami-mcp change or delete data?

20 of its tools say in their description that they create, edit, delete, send or run something (our AI model's reading). We did not call any tool, so we cannot say what actually happens.

Found this page useful?

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A quick, anonymous reaction — no account, no email. One per kind from your browser. The tally updates when the page is next refreshed, and it is only a rough count, never a safety rating or a measured number of people.

Similar servers

Same topic · AI-read

io.github.agenticmail/mcpalso has tools that creates or changes data, deletes, reads or searches, sends messagescompare with this one
io.github.ihuzaifashoukat/x-useX-Use - X (Twitter) MCP Serveralso has tools that creates or changes data, deletes, reads or searches, sends messagescompare with this one
io.github.nikolausm/imap-mcp-serveralso has tools that creates or changes data, deletes, reads or searches, sends messagescompare with this one
io.github.mpalermiti/outlook-mcpOutlook MCPalso has tools that creates or changes data, deletes, reads or searches, sends messagescompare with this one
io.github.parasxos/apple-mail-mcpalso has tools that creates or changes data, deletes, reads or searches, sends messagescompare with this one
com.mcparmory/mailersendalso has tools that creates or changes data, deletes, reads or searches, sends messagescompare with this one

Active servers whose topic is also “communication-and-social” and that have at least one tool of the same kind; most kinds in common first, then most GitHub stars. The topic and the tool kinds are an AI model's reading of the publishers' descriptions, not checked by hand. Similar is not a recommendation.

Compare with another server

Side by side: registry entry, our read-only session, the tools and the 18 classification fields. Same values as each page; no score.

Security testing

What did we test, and what did we leave out?

18 checks · features #1, #2

Open without sign-in

It accepted a session without any credential and lists tools whose names suggest they change data. We did not call them. No security score is given; a check we did not run is never counted as passed.

The 18 checks at a glanceour test · 2026-10-23

Inventory: exercised
Hidden instructions: exercised
Real execution: not run · our policy
Secret leak: not run · nothing to check it against
Internal addresses: not run · our policy
Unconfirmed changes: not run · our policy
Bad input: not run · our policy
Model requests: not run · nothing to check it against
Sensitive questions: not run · nothing to check it against
Folder boundary: not run · our policy
Log leaks: not run · nothing to check it against
Hidden content: not run · nothing to check it against
Fake assistant turns: not applicable
Token passthrough: not applicable
Token audience: not applicable
Sign-in redirect: not run · our policy
Consent handling: not testable from outside
Sign-in metadata: exercised

3 exercised12 not run (reason given)3 not applicable

Each check ends in exactly one state: exercised, not run (with the reason), or not applicable (with the reason). 3 of the 15 checks that apply to it were exercised. We do not publish security-check outcomes for named servers.

Exercised · 3

1Inventory
tool-listReads the declared tools, resources and prompts.exercised
2Hidden instructions
description-poisoningLooks for hidden instructions in tool descriptions.exercised
18Sign-in metadata
oauth-url-schemeChecks the published sign-in metadata for unsafe URLs.exercised

Not run, with the reason · 12

3Real execution
real-executionCalls a tool and checks what really happens.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
4Secret leak
canary-leakPlants a fake secret and checks whether it leaks.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
5Internal addresses
ssrfChecks whether a tool can be steered to internal addresses.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
6Unconfirmed changes
write-without-confirmationChecks whether tools that change data act without asking.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
7Bad input
error-handlingSends bad input and watches how the server answers.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
8Model requests
samplingChecks whether the server asks the client's model to act for it.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
9Sensitive questions
elicitation-sensitive-dataChecks whether the server asks users for sensitive data.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
10Folder boundary
root-boundaryChecks whether the server reaches outside the folders it was given.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
11Log leaks
logging-side-channelChecks whether log messages carry data they should not.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
12Hidden content
audience-hidingChecks resources that hide content from the user.This check needs content the server returns, and nothing was read or called.not run · nothing to check it against
16Sign-in redirect
open-redirectChecks the sign-in redirect for abuse.Testing the sign-in redirect means sending probes to the operator's sign-in service, which we do not do.not run · our policy
17Consent handling
confused-deputyChecks consent handling when one service acts for another.Depends on the operator's own consent screen, which differs per server and cannot be tested from outside.not testable from outside

Does not apply to this server · 3

13Fake assistant turns
fake-assistant-turnChecks prompts that pose as the assistant's own words.The server exposes no prompts.not applicable
14Token passthrough
token-passthroughChecks whether the server forwards a user's token to other services.The server opened a session without sign-in, so there is no token flow to check.not applicable
15Token audience
token-audience-validationChecks whether tokens meant for another service are accepted.The server opened a session without sign-in, so there is no token flow to check.not applicable

Source: our own test, 2026-10-23, mcp-runtime-engine@0.1.0. Which checks count and why follows our published scoring model.

What happened during the test?

Feature #8

The steps in order, as the test record holds them.

0 msStarted a read-only session with the server's remote endpoint
977 msConnected after 0 redirects. No credential was sent or needed.
Read the inventory: 42 tools, 0 resources, 0 prompts.
3,507 msFinished: 3 checks exercised.

Reference

How is it classified?

18 fields

One value per field, each with its source. Fields written by AI models are marked. A field with no value says why.

TopicAI-classified

communication-and-social

AI-classified · 2026-10-23

Pricing modelAI-classified

no value

No value: the AI answer was held back because the quoted text did not clearly support it.

Programming language

does not apply

no existing GitHub repository (server declares no repository link, so there is nothing to fetch)

Hosting type

remote (hosted by the publisher)

registry · 2026-10-23

MCP capability

tools

our test · 2026-10-23

Transport

streamable HTTP

registry · 2026-10-23

Required credentials

none declared

registry · no declaration is not a guarantee

Package registry

does not apply

remote-only server: no package is shipped, so there is no package registry

Freshness

0–30 days

registry updatedAt · 2026-10-23

Lifecycle status

active

registry · 2026-10-23

License class

does not apply

remote-only server: ships no package, so there is nothing to look up in a package registry

Integrity hash

does not apply

remote-only server: ships no package, so there is nothing to look up in a package registry

Signature / provenance

does not apply

remote-only server: ships no package, so there is nothing to look up in a package registry

Dependency advisories

does not apply

ships no package, so there are no dependencies to audit

Popularity

does not apply

remote-only server: ships no package, so there is nothing to look up in a package registry

Publisher signals

not stated

no readable GitHub owner to describe

Maintenance

does not apply

server declares no repository link, so there is nothing to fetch

Environment

the publisher's infrastructure

where it runs, from the hosting type

“Not stated” means the source did not state it; “does not apply” means it does not apply to this kind of server; “our limit” means our own lookup failed. A linked value opens the directory filtered to the same value.

Cite or correct this page

Sources and corrections

Suggested citation

ProtocolProbe. “io.github.cherami-mail/cherami-mcp: MCP server record.” Data checked 2026-10-23. https://protocolprobe.com/mcp/servers/io.github.cherami-mail/cherami-mcp

Figures are valid for the date shown. Our facts on this page are CC BY 4.0: reuse them with a link and the check date. Quoted text (the publisher’s descriptions, website quotes, tool names) is not ours to license.

As JSON: this record in the API · API documentation.

Badge for your README

[![ProtocolProbe](https://protocolprobe.com/api/v1/badge/io.github.cherami-mail/cherami-mcp)](https://protocolprobe.com/mcp/servers/io.github.cherami-mail/cherami-mcp)

It shows this server's record-check count: facts from public records, no tool called. It is not a security rating or a pass. It links here and updates after each data reload.

Something wrong, or is this yours?

If a fact here is wrong, tell us and we will re-check it. If you operate this server, you can run our checks on it yourself with the free self-test command; we call no server’s tools ourselves for anything shown here.

Write to hello@protocolprobe.com · corrections log · methodology