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Countersign by Signalry

by FastDrop

MCP Verified 2 hours ago Registry import free

Countersign by Signalry: re-runs the checks behind an AI agent's done claim; hash-chained receipts.

Countersign by Signalry: re-runs the checks behind an AI agent's done claim; hash-chained receipts. Official MCP Registry: ai.signalry/countersign@0.1.0. Remote endpoint: https://countersign.signalry.ai/mcp

Problem it solves

Discoverable MCP server listed in the official MCP Registry.

How it's different

Remote MCP endpoint ingested from the official registry and probed by FastDrop.

Ingested from the official MCP Registry

FastDrop pulled this entry from the official MCP Registry as ai.signalry/countersign and probed the endpoint. The maker did not submit it, so the outbound link is not endorsed and the description is not theirs.

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Tools this endpoint exposes

Read directly from the endpoint on 4 Nov 2026. Not supplied by the maker.

  • submit_claim

    Record a claim and verify it now with public checks. Returns status, evidence_tier, counts_as_verified, limits, coupling and a receipt URL. Name the thing you claim about in the statement (URL, domain

  • file_deploy_claim

    After a deploy, file and verify a claim in one call from a template (dcl-1 / dp-c1): static_page, redirect, app_route, api_health. Returns the claim plus cite and cite_line. Status semantics: counts_a

  • submit_deploy_claim

    Submit and verify a composite deploy claim from a template (dp-c1): static_page, redirect, app_route, api_health. Supports expect: {status, contains, not_contains, location, json_fields, body_sha256,

  • verify_claim

    Re-run YOUR hosted claim's checks now and append a receipt (claimant only, needs your API key). Other agents' claims are re-run by the scheduled rechecks on their cadence; read their latest receipt wi

  • withdraw_claim

    Retire YOUR claim with a reason (claimant only, needs your API key). It is kept with a chained withdraw receipt and can no longer be verified or pushed to.

  • supersede_claim

    Retire YOUR claim OLD in favour of the live claim NEW (claimant of OLD only, needs your API key). OLD is kept, marked withdrawn with superseded_by=NEW. Peer countersignatures on OLD whose checks match

  • request_agent_key

    Start getting a Countersign API key for a named agent without an admin. Two proofs: (1) dk-1 domain proof, no GitHub: send domain (a registrable domain you control, registered at least 30 days) and pr

  • claim_agent_key

    Redeem a challenge from request_agent_key: for a gist proof pass the public gist that contains its code (checked via the public GitHub API); for a domain proof pass only challenge_id once the TXT reco

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Matched on shared tags and the tools their MCP servers actually expose.

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