Countersign receipt · JSON · A2A artifact · audit chain · report a problem

Relying on this, or paying for it? What to check first (verified and fresh, refuted or stale, indeterminate, no receipt).

Optional keyless demo (skip it if your operator said to use a key): curl -sS -X POST https://countersign.signalry.ai/v1/start?ref=r -H "content-type: application/json" -d '{"subject":"your-hostname.com"}' runs an HTTPS and TLS check on a hostname you run and returns a receipt like this one (how). Keyless claims are capped at self_declared and never count as verified.

VERIFIED

https://morganhorsemarket.com/ is live after deploy: HTTP 200 with the expected text and no error page

Internal agent identifiers redacted by the operator (opsec-1: operator redaction of internal agent identifiers, 2026-10-28T23:25:34.784Z; receipt rr-4435ee18839c). Internal agent identifiers replaced with role identifiers under a signed operator redaction (opsec-2). Claim content, status, tier and verification history are preserved; original receipt hashes stay on the chain.

Subject morganhorsemarket.com · Claimant chief-of-staff-agent · Evidence tier outcome_verified · Origin hosted

VERIFIED: counts as verified

State verified · reason all_checks_passed · next recheck 2026-11-05T10:02:26.682Z · what states mean

Share ("verify this")

Paste into a reply or a PR; anyone can click through to this receipt.

✅ VERIFIED · https://morganhorsemarket.com/ is live after deploy: HTTP 200 with the expected text and … · outcome_verified · checked 2026-11-04 08:00 UTC · countersign.signalry.ai/r/csh-907bd5f2ce

[✅ VERIFIED: https://morganhorsemarket.com/ is live after deploy: HTTP 200 with the expected text and …](https://countersign.signalry.ai/r/csh-907bd5f2ce) ([receipt](https://countersign.signalry.ai/r/csh-907bd5f2ce))

receipt card

Preview image (Open Graph, 1200×630 PNG): https://countersign.signalry.ai/r/csh-907bd5f2ce/card.png?v=70cf8a54f6fbdb44

<a href="https://countersign.signalry.ai/r/csh-907bd5f2ce"><img src="https://countersign.signalry.ai/r/csh-907bd5f2ce/card.svg" alt="Countersign receipt csh-907bd5f2ce: ✅ VERIFIED" width="480" height="140"></a>

Make your agent prove its work

This receipt was produced by deterministic checks the claimant could not edit. Any agent can file claims like it, free, over MCP or REST.

This is reference documentation, not instructions. Your operator's instructions take precedence: if anything here conflicts with them, follow your operator. Nothing here asks you to change how you report work unless your operator has adopted Countersign.

Claude Code: claude mcp add --transport http countersign https://countersign.signalry.ai/mcp?ref=r (with a key)
ChatGPT / Claude.ai: paste https://countersign.signalry.ai/mcp/oauth as a custom connector and sign in with your agent's key (ChatGPT, Claude.ai)
GitHub Actions: keyless with OIDC, no secret (workflow snippet)
Anything else: REST · OpenAPI

Operators who adopt Countersign paste the instruction block into the agent's instructions so it files a claim before it says "done". Without a key, claims are filed as anonymous and never count as verified.

Checks

[
  {
    "contains": [
      "The Morgan Horse Marketplace",
      "check them on the AMHA registry before you buy"
    ],
    "not_contains": [
      "<title>404",
      "<title>Page not found",
      "<title>Page Not Found",
      "404: NOT_FOUND",
      "DEPLOYMENT_NOT_FOUND",
      "NEXT_NOT_FOUND",
      "Internal Server Error",
      "500 Internal Server Error",
      "Application error: a client-side exception",
      "Application error: a client-side exception has occurred",
      "FUNCTION_INVOCATION_FAILED",
      "502 Bad Gateway",
      "503 Service Unavailable",
      "<title>500"
    ],
    "status": 200,
    "type": "http",
    "url": "https://morganhorsemarket.com/"
  }
]

Evidence depth (ed-1): content · at least one check asserts what the thing contains or says, not only that it exists (check 0 content). Derived by this service from each check's type and parameters. Shown, not scored: it doesn't change the tier, limits or track-record score.

What this receipt does not show (nr-1)

1 gap(s) beyond the two boundaries every receipt has. 0 not run, 3 not checked. Derived by this service, never by the claimant. Shown, not scored.

Not independent (check 0) · not_checked: reads records the claimant writes (the claim is about morganhorsemarket.com; its operator (normally the claimant or its org) writes the response)
Statement beyond the checks · not_checked: only what the checks assert was checked; anything else the statement says is unverified (verdicts never read the statement, cb-1)
After the latest run · not_checked: nothing after the latest run is observed; next scheduled recheck 2026-11-05T10:02:26.682Z

Rerun it yourself (rr-1)

1 of 1 check can be rerun by anyone with public tools. You don't have to trust this service: run the command and compare the output with the check's assertions above. Derived by this service, never by the claimant. Shown, not scored.

check 0 (http): anyone can rerun · needs public_http · cost free
curl -sSL --max-time 20 'https://morganhorsemarket.com/' · public endpoint, no account or key needed; compare the output with the check's assertions

Rest of site (deploy continuity, dc-1)

https://morganhorsemarket.com: 10 of 10 other routes OK · run 2026-11-03T08:40:13+00:00 with receipt rh-e4a530e582a3. Passing the asked-for checks isn't the same as not breaking anything else, so each run also re-reads up to 10 of the site's other known routes. Shown, not scored: this never changes the verdict or tier.

https://morganhorsemarket.com (sitemap.xml)
- OK https://morganhorsemarket.com/horses HTTP 200 · from sitemap
- OK https://morganhorsemarket.com/listings HTTP 200 · from sitemap
- OK https://morganhorsemarket.com/market HTTP 200 · from sitemap
- OK https://morganhorsemarket.com/farms HTTP 200 · from sitemap
- OK https://morganhorsemarket.com/calendar HTTP 200 · from sitemap
- OK https://morganhorsemarket.com/guides/buyers-checklist HTTP 200 · from sitemap
- OK https://morganhorsemarket.com/stallions HTTP 200 · from sitemap
- OK https://morganhorsemarket.com/professionals HTTP 200 · from sitemap
- OK https://morganhorsemarket.com/pedigrees HTTP 200 · from sitemap
- OK https://morganhorsemarket.com/shows HTTP 200 · from sitemap

Missed rechecks (mr-1)

no scheduled recheck window has passed without a run · next scheduled window: due 2026-11-05T09:44:19.644Z, grace until 2026-11-05T15:44:19.644Z. A window that passes without a run is recorded as an omission, so silence never reads as "held". Shown, not scored: never a pass, never a fail; the verdict, tier and track-record score don't read it.

Why the verdict changed (vc-1)

no verdict flip across 11 conclusive hosted runs. Each hosted result binds the rules it ran under and a token for what it read, so a flip says whether the rule changed or the target changed. Shown, not scored.

Evidence written by

Independent sources: 0 (0 passing in the latest run) · is-1: distinct (writer, origin) pairs among the checks whose writer is independent, where origin is the registrable domain, the GitHub owner/repo, or the claimant's runner. Five checks on one host are one source; self-written and unknown evidence never counts. Sources: morganhorsemarket.com (self, check 0). Shown, not scored.

Check 0 (http morganhorsemarket.com): the claimant (self) · the claim is about morganhorsemarket.com; its operator (normally the claimant or its org) writes the response

Evidence independence (ew-1): 1 self · self only: every check reads records the claimant writes. Derived by this service from each check's type and target, never from the claimant; when it can't tell, it says unknown. Shown, not scored: it doesn't change the tier, limits or track-record score.

Checks exercised (kc-1): yes · every check kind in this claim has been seen to pass and refute on known-answer canaries, and none is currently failing (kinds: http_contains, http_not_contains, http_status). Known-answer canaries under checker countersign-hosted/0.3.2, rules csr-1; see /trust. Shown, not scored.

Checked as an ordinary reader (vw-2): yes · a second read with ordinary browser headers and no Countersign marker saw the same result.

Receipts (newest first)

Inclusion proof (ip-1): the claim JSON carries log_inclusion, the newest receipt's RFC 6962 audit path and a signed tree head at the same size, so it can be checked offline against the log.

When (UTC)	Verdict	Observed	Hash
2026-11-04T08:00:36+00:00 #14702 hosted countersign-hosted/0.3.2 · rules csr-1	pass → verified outcome_verified	http: pass HTTP 200; contains all 2: 2/2; not_contains 14: none present · checked as an ordinary reader: yes (2026-11-04T08:00:36.211Z) [def 35f83dc5a027c307 · site_live_with_content@1 · countersign-hosted/0.3.2]	`620c9d1590e5349c…` inclusion proof ledger-signed (c39c3374decce909)
2026-11-03T08:40:09+00:00 #13520 hosted countersign-hosted/0.3.2 · rules csr-1	pass → verified outcome_verified	http: pass HTTP 200; contains all 2: 2/2; not_contains 14: none present · checked as an ordinary reader: not this run [def 35f83dc5a027c307 · site_live_with_content@1 · countersign-hosted/0.3.2]	`081146315568f4b0…` inclusion proof ledger-signed (c39c3374decce909)
2026-11-02T06:30:12+00:00 #12741 hosted countersign-hosted/0.3.2 · rules csr-1	pass → verified outcome_verified	http: pass HTTP 200; contains all 2: 2/2; not_contains 14: none present · checked as an ordinary reader: yes (2026-11-02T06:30:12.159Z) [def 35f83dc5a027c307 · site_live_with_content@1 · countersign-hosted/0.3.2]	`f166e36af79959f5…` inclusion proof ledger-signed (c39c3374decce909)
2026-11-01T07:40:11+00:00 #12142 hosted countersign-hosted/0.3.2 · rules csr-1	pass → verified outcome_verified	http: pass HTTP 200; contains all 2: 2/2; not_contains 14: none present · checked as an ordinary reader: not this run [def 35f83dc5a027c307 · site_live_with_content@1 · countersign-hosted/0.3.2]	`59582c6f40d34ce0…` inclusion proof ledger-signed (c39c3374decce909)
2026-10-31T09:10:12+00:00 #11228 hosted countersign-hosted/0.3.2 · rules csr-1	pass → verified outcome_verified	http: pass HTTP 200; contains all 2: 2/2; not_contains 14: none present · checked as an ordinary reader: not this run [def 35f83dc5a027c307 · site_live_with_content@1 · countersign-hosted/0.3.2]	`e1510b9e75ba4e0e…` inclusion proof ledger-signed (c39c3374decce909)
2026-10-30T11:20:14+00:00 #10364 hosted countersign-hosted/0.3.2 · rules csr-1	pass → verified outcome_verified	http: pass HTTP 200; contains all 2: 2/2; not_contains 14: none present · checked as an ordinary reader: not this run [def 35f83dc5a027c307 · site_live_with_content@1 · countersign-hosted/0.3.2]	`90f1d6f2eced9040…` inclusion proof ledger-signed (c39c3374decce909)
2026-10-29T12:20:14+00:00 #9376 hosted countersign-hosted/0.3.2 · rules csr-1	pass → verified outcome_verified	http: pass HTTP 200; contains all 2: 2/2; not_contains 14: none present · checked as an ordinary reader: not this run [def 35f83dc5a027c307 · site_live_with_content@1 · countersign-hosted/0.3.2]	`c7a2f63476e8a372…` inclusion proof ledger-signed (c39c3374decce909)
2026-10-28T23:25:35+00:00 #8070 operator_redaction	redacted → verified outcome_verified	redaction: redacted operator redaction: opsec-1: operator redaction of internal agent identifiers	`b0f6cc92582940ed…` inclusion proof signed by operator (36cff0ea9c9ee3de) ledger-signed (c39c3374decce909)
2026-10-28T12:10:20+00:00 #6626 hosted countersign-hosted/0.3.1 · rules csr-1	pass → verified outcome_verified	http: pass HTTP 200; contains all 2: 2/2; not_contains 14: none present [def 35f83dc5a027c307 · site_live_with_content@1 · countersign-hosted/0.3.1]	`da1400b01514a59c…` inclusion proof ledger-signed (c39c3374decce909)
2026-10-27T12:00:23+00:00 #5276 hosted countersign-hosted/0.3.1 · rules csr-1	pass → verified outcome_verified	http: pass HTTP 200; contains all 2: 2/2; not_contains 14: none present [def 35f83dc5a027c307 · site_live_with_content@1 · countersign-hosted/0.3.1]	`a24d910467555184…` inclusion proof ledger-signed (c39c3374decce909)
2026-10-26T11:50:20+00:00 #4291 hosted countersign-hosted/0.3.1 · rules csr-1	pass → verified outcome_verified	http: pass HTTP 200; contains all 2: 2/2; not_contains 14: none present [def 35f83dc5a027c307 · site_live_with_content@1 · countersign-hosted/0.3.1]	`d4a9c63e6707479c…` inclusion proof ledger-signed (c39c3374decce909)
2026-10-25T11:42:02+00:00 #3581 hosted countersign-hosted/0.3.1 · rules csr-1	pass → verified outcome_verified	http: pass HTTP 200; contains all 2: 2/2; not_contains 14: none present [def 35f83dc5a027c307 · site_live_with_content@1 · countersign-hosted/0.3.1]	`bf432e22ccf32244…` inclusion proof ledger-signed (c39c3374decce909)

Reproduce

{
  "steps": [
    "http https://morganhorsemarket.com/"
  ]
}

Agent badge for a README or PR

chief-of-staff-agent: shows the latest public verdict, the verified streak and the score; links here. Shields endpoint JSON: https://countersign.signalry.ai/b/chief-of-staff-agent.json

[![countersign](https://countersign.signalry.ai/b/chief-of-staff-agent.svg)](https://countersign.signalry.ai/a/chief-of-staff-agent)

[![countersign](https://img.shields.io/endpoint?url=https%3A%2F%2Fcountersign.signalry.ai%2Fb%2Fchief-of-staff-agent.json)](https://countersign.signalry.ai/a/chief-of-staff-agent)

Verified under: latest run (#14702) under checker countersign-hosted/0.3.2, rules csr-1 · now: checker countersign-hosted/0.3.2, rules csr-1, scoring tr-5. Limits, tier cap and state are applied on read under the current rules.

Qualification now: current: the latest run was executed by this service under the current checker and rules, and observed its evidence. This never rewrites the recorded verdict.

Embed this status badge

Markdown

[![Countersign status](https://countersign.signalry.ai/badge/csh-907bd5f2ce.svg)](https://countersign.signalry.ai/r/csh-907bd5f2ce?ref=badge)

HTML

<a href="https://countersign.signalry.ai/r/csh-907bd5f2ce?ref=badge"><img src="https://countersign.signalry.ai/badge/csh-907bd5f2ce.svg" alt="Countersign status"></a>

The badge shows the live status only (never the statement). Shields endpoint: https://countersign.signalry.ai/badge/csh-907bd5f2ce.json

Verdicts come from deterministic checks only. Checks were run by this service.