io.github.arif-js/opensdr-mcp

What it mainly works on, as our AI model read its tool descriptions: files and code on the machine it runs on; accounts and data in outside web services.

8 of 17 tools are described as changing something (creating, editing, deleting, sending or running). For 1 the reading was uncertain, so no mark is shown.

• sdr_provider_statusreads or searches

  “Reports which providers are configured, the current mode (live or demo), read-only state, the data directory, per-capability provider resolution, session credit estimate and the active limits.”

  Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

  Takes no inputs.

• sdr_lookup_filtersreads or searches

  “Look up normalized filter values for Apollo searches: seniority, employee_range, revenue_range, department, title or industry.”

  Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

  3 inputs, 1 required

  • kindstringrequired“Which filter taxonomy to look up.”
  • querystring“Fuzzy search text, e.g.”
  • limitinteger“Maximum values to return.”
• sdr_search_peoplereads or searches

  “Search for people (prospects) by title, seniority, location, company domain or size.”

  Publisher declares: read-only yes · destructive no · idempotent yes · open-world yes

  9 inputs

  • job_titlesarray“Job titles to match.”
  • person_senioritiesarray“Apollo seniority levels.”
  • person_locationsarray“Where the person lives.”
  • organization_domainsarray“Employer domains, normalized (no www.).”
  • organization_locationsarray“Employer HQ locations.”
  • employee_rangesarray“Employer headcount ranges.”
  • keywordsstring“Free-text keywords.”
  • limitinteger“Results per page (max 50).”
  • cursorstring or null“Opaque pagination cursor from a previous call.”
• sdr_search_companiesreads or searches

  “Search for companies by industry, keywords, size, location, technology or domain.”

  Publisher declares: read-only yes · destructive no · idempotent yes · open-world yes

  10 inputs

  • industriesarray“Industry keywords.”
  • keywordsstring“Free-text company keywords.”
  • employee_rangesarray“Headcount ranges.”
  • revenue_rangesarray“Revenue buckets from sdr_lookup_filters kind "revenue_range".”
  • locationsarray“Company HQ locations.”
  • technologiesarray“Technologies in use.”
  • domainsarray“Company domains, normalized.”
  • limitinteger“Results per page (max 50).”
  • cursorstring or null“Opaque pagination cursor from a previous call.”
  • max_creditsinteger“Per-call credit cap.”
• sdr_waterfall_enrich_personcreates or changes datadescribed as changing data

  “Find and verify a work email for people through a cost-aware waterfall: Apollo match -> Hunter finder -> optional Hunter verifier -> free local checks (syntax, MX, disposable, role).”

  Publisher declares: read-only no · destructive no · idempotent no · open-world yes

  4 inputs, 1 required

  • peoplearrayrequired“People to enrich (1-25).”
  • max_creditsinteger“Per-call credit cap.”
  • force_refreshboolean“Bypass the cache.”
  • verify_with_hunterboolean“Run the Hunter verifier too.”
• sdr_enrich_companycreates or changes datadescribed as changing data

  “Enrich up to 10 company domains with firmographics (industry, headcount, location, technologies, funding) via Apollo organization enrichment.”

  Publisher declares: read-only no · destructive no · idempotent no · open-world yes

  3 inputs, 1 required

  • domainsarrayrequired“Domains (1-10).”
  • max_creditsinteger“Per-call credit cap.”
  • force_refreshboolean“Bypass the cache.”
• sdr_verify_emailreads or searches

  “Check whether email addresses are deliverable.”

  Publisher declares: read-only no · destructive no · idempotent no · open-world yes

  2 inputs, 1 required

  • emailsarrayrequired“Emails to check (1-25).”
  • use_providerboolean“Also run the Hunter verifier.”
• sdr_save_prospectscreates or changes datadescribed as changing data

  “Save or update prospects in a local named list.”

  Publisher declares: read-only no · destructive no · idempotent yes · open-world no

  4 inputs, 2 required

  • liststringrequired“List slug ([a-z0-9-_]).”
  • peoplearrayrequired“People or { prospect_id, patch } edits.”
  • mergestring“Merge strategy.”
  • statusstring“Default status for new prospects.”
• sdr_list_prospectsreads or searches

  “Query saved prospects by list, status, email status, company domain or free-text search, and optionally return a per-list summary with counts.”

  Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

  9 inputs

  • liststring“Filter by list membership.”
  • statusstring
  • email_statusarray
  • has_emailboolean
  • company_domainstring
  • searchstring
  • limitinteger
  • cursorstring or null
  • include_lists_summaryboolean
• sdr_export_csv

  “Export prospects to a UTF-8 (BOM) CSV that opens cleanly in Excel or Sheets.”

  Publisher declares: read-only no · destructive no · idempotent no · open-world no

  6 inputs

  • liststring
  • prospect_idsarray
  • columnsarray
  • pathstring
  • overwriteboolean
  • include_suppressedboolean
• sdr_manage_suppressioncreates or changes datadescribed as changing data

  “Maintain the do-not-contact list (emails and domains) and check values against it.”

  Publisher declares: read-only no · destructive no · idempotent no · open-world no

  6 inputs, 1 required

  • actionstringrequired
  • emailsarray
  • domainsarray
  • reasonstring
  • limitinteger
  • cursorstring or null
• sdr_detect_buying_signalsreads or searchesdescribed as changing data

  “Find recent, sourced buying signals for companies: funding, hiring, leadership changes, product launches, acquisitions and tech changes.”

  Publisher declares: read-only no · destructive no · idempotent no · open-world yes

  6 inputs, 1 required

  • companiesarrayrequired“Companies to check (1-10); pass a domain to disambiguate names.”
  • signal_typesarray“Defaults to all signal types.”
  • lookback_daysinteger“Recency window.”
  • max_results_per_companyinteger
  • max_creditsinteger
  • attach_to_prospectsboolean“Attach signals to saved prospects at the domain.”

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.

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.