com.rattlesnakesbymail/rattlesnakesbymail

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Dated, sourced claims about AI crawlers and agents, offered as MCP tools.

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "rattlesnakesbymail": {
      "url": "https://rattlesnakesbymail.com/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (6)

• lookup_crawler read-only

  Look up a documented crawler on Rattlesnakes By Mail by name, slug, or user-agent string, and return identity fields, current claims, publication dates, and evidence URLs. Use lookup_crawler when the crawler is already named, or when the user agent is already known to belong to a documented crawler.

  Parameters:

  • name_or_ua (required) — string — A crawler name, slug, or full user-agent string.

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• identify_user_agent read-only

  Match an unrecognized raw User-Agent header against the crawlers documented on Rattlesnakes By Mail, and return the matched crawler plus instructions for verifying the request. Use identify_user_agent when the crawler behind the User-Agent header is not yet known.

  Parameters:

  • user_agent (required) — string — A raw User-Agent header string.

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• list_changes read-only

  List recorded changes to claims on Rattlesnakes By Mail, newest first, with the change date and the affected crawler. Filter by date with since, by crawler with entity, or by both. Use list_changes to detect crawler policy updates published after a given date.

  Parameters:

  • limit — integer — Maximum rows to return, up to 200.
  • since — string — An ISO date; only changes on or after this date are returned.
  • entity — string — An entity slug to filter changes to one crawler.

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• ask

  Match a free-text question against the claims published on Rattlesnakes By Mail, and return the matching claims, or no match when no published claim covers the question. Every question sent to ask is recorded, and a recorded question may be published on the public questions page at Rattlesnakes By Mail. Do not send private or identifying text to ask.

  Parameters:

  • question (required) — string — A free-text question about crawlers, agents, or claims.

  Hints: read-only no · destructive no · idempotent no · open-world no

• submit_note

  Submit a correction or note about a claim, an entity, a question, or a daily snapshot on Rattlesnakes By Mail. Requires a client token issued out of band by the publisher. Every note is stored as pending, and an editor reviews every pending note before publication.

  Parameters:

  • body (required) — string — The note text, up to 2000 characters.
  • token (required) — string — A client token issued by Rattlesnakes By Mail.
  • target — string — Shorthand for target_type and target_id, for example snapshot:261101 or question:12.
  • target_id — string — The id or slug of the claim or entity, the id or hash of the question, or the six digit label of the snapshot, the note is about.
  • target_type — string — The kind of record the note is about.

  Hints: read-only no · destructive no · idempotent no · open-world no

• get_snapshot read-only

  Return the daily snapshot of crawler activity on Rattlesnakes By Mail for one UTC date: dated facts, a table of crawler requests, context against each crawler's recent history, and links. Pass a six digit label such as 261101 or an ISO date such as 2026-11-01. The numbers come from one website and describe what these crawlers did here, not across the web.

  Parameters:

  • date (required) — string — A snapshot label (YYMMDD) or an ISO date (YYYY-MM-DD).

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

Publisher website

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.