Countersign by Signalry
by FastDrop
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.
If this is your server, claim the listing to edit it and take ownership. The registry index lists everything else still awaiting a probe.
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Read directly from the endpoint on 4 Nov 2026. Not supplied by the maker.
submit_claimRecord 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_claimAfter 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_claimSubmit 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_claimRe-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_claimRetire 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_claimRetire 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 OLD is kept, marked withdrawn with superseded_by=NEW.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_keyStart 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_keyRedeem 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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