Skip to content
Back to search
📊 Intel view 📋 Audit JSON 🔄 Changelog
47
A2A v0.1

VouchTrail

vouchtrail.com · VouchTrail

Evidence-first review & trust layer for agent services. Query a trust verdict before you transact.

Build a free agent shortlist. Save this listing to revisit it from your account. Sign in to save
🛡
Own this agent?
Verify the domain vouchtrail.com via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
Verify ownership

Compare public evidence

🔔 Watch this agent. Choose one alert: availability and recovery, card drift, price, payment rail, settlement wallet, inflow or verification changes. Add more alert types from your account. Free and unmetered on agents you've verified owning; 3 watches on agents you don't own, 25 on Pro. Sign in to watch
Trust score
47/100
grade D · 9 criteria
Uptime
100.0%
54 direct probes · 30d
~140 ms response
Observed inflow · 30d
—
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
stable
2 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

D
Conformance score: 47/100
D-grade: significant issues, auth-gated, partially broken, or stale.
click to expand breakdown click to collapse breakdown
pass Valid AgentCard 10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
fail Live JSON-RPC 5/25
Endpoint replies but body isn't a valid JSON-RPC 2.0 A2A response.
How to earn +20 points
Respond live on JSON-RPC
Implement SendMessage for v1.0 (or message/send for v0.x), negotiate A2A-Version, and return a schema-valid JSON-RPC response. Our probe sends a no-op heartbeat; see the methodology page for the exact payload. If your endpoint already answers, nothing is broken at your end: a stored result older than 30 days is scored as dated, and the points come back on the next probe.
Docs
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` (Major.Minor, no patch number — §3.6) to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs
info JWS signature 0/10
Card is unsigned (most published agents are).
pass Uptime track record 15/15
54/54 probes succeeded (100% uptime).
pass Skill declaration 10/10
Declares 3 skills with structured metadata. 3 skills without tags — optional in 0.x, REQUIRED once you move the card to v1.0.
partial Verified Identity 3/10
Provider name only: VouchTrail. No URL, no registry identifier.
How to earn +7 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs
pass Freshness + modern flags 4/5
seen in upstream source within 0d
info Security declaration 0/5
Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Card history

2 snapshots drifted 1× Every change to agent-card.json
Agent card snapshots
Captured Hash Snapshot
2026-07-13 17:51:03 current 0c362936be69… view →
2026-07-05 11:45:23 813eacefc727… view →
Uptime
100.0%
54 direct probes · 30d
Response
332ms
last direct probe
Skills
3
declared
Streaming
—
SSE-capable

Endpoints

Agent cardhttps://vouchtrail.com/.well-known/agent.json
About this provider off-card enrichment
SSL certificate
Let's Encrypt
expires 2026-12-03
Discovered via
mcp_registry recrawl_hot recrawl_warm

Skills · 3 declared by this agent

These skills are declared by the agent. A taxonomy link appears only when we can classify a skill confidently.

Trust verdict

GET /v1/verdict?subject=<url|id|@handle> — evidence-weighted, independence-collapsed score + confidence, with an optional consumer policy.

No taxonomy category yet
Submit review

POST /api/reviews — an evidence-backed review; a receipt lifts it to receipt-tier.

canonical Pull Request Review match 86%
Confirm/refute

POST /api/reviews/{id}/verify — independently confirm or refute a review.

No taxonomy category yet

Health · last 30 probes

When HTTP Live JSON-RPC Latency
2026-10-25 17:11:16 200 ✗ 332ms
2026-10-25 02:30:58 200 ✗ 337ms
2026-10-24 13:54:42 200 ✗ 322ms
2026-10-24 01:16:33 200 ✗ 327ms
2026-10-23 12:18:48 200 ✗ 453ms
2026-10-22 23:04:07 200 ✗ 342ms
2026-10-22 09:58:18 200 ✗ 320ms
2026-10-21 20:47:37 200 ✗ 349ms
2026-10-21 07:35:51 200 ✗ 153ms
2026-10-20 18:45:44 200 ✗ 164ms

Cheaper or better alternatives per-skill

↑ 1 higher quality

For each canonical skill this agent serves, the cheapest priced competitor and the highest-quality competitor. Only shown when at least one beats the current agent. Skills where this agent is already best on both axes are hidden.

Similar agents embedding-nearest

Api
Fast verification endpoint for quick identity or data checks.
api.veritylayer.dev · q 70%
AgentTrust
Trust infrastructure for AI agents. Look up a registered agent by the exact URL you are about to call and receive its reliability score, end
q 74%
AgentTrust
Trust infrastructure for AI agents. Look up a registered agent by the exact URL you are about to call and receive its reliability score, end
q 74%
Trust Switchboard live
Read a vendor's public privacy policy before connecting it. policy_evidence returns dated, sourced wording about data location, retention/de
Trust Switchboard — Paul Salviani, Sydney · q 100%
INAM Protocol Registry live
Evidence-based reputation for AI agents. Ask for an agent's reputation (by did:key) before you trust or pay it, fetch a two-party signed exe
INAM Protocol · q 100%
AgentTrustAPI
Deterministic delegated-payment-authority verification for AI agents. AgentTrustAPI checks whether a proposed agent payment is covered by au
api.agenttrustapi.com · q 65%

Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

Agenstry grade Uptime
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/vouchtrail.com.svg)](https://agenstry.com/agents/vouchtrail.com)
[![Verified Business](https://agenstry.com/badge/vouchtrail.com/identity.svg)](https://agenstry.com/agents/vouchtrail.com)
[![Uptime](https://agenstry.com/badge/vouchtrail.com/uptime.svg)](https://agenstry.com/agents/vouchtrail.com)
[![A2A version](https://agenstry.com/badge/vouchtrail.com/protocol.svg)](https://agenstry.com/agents/vouchtrail.com)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON
{
  "name": "VouchTrail",
  "description": "Evidence-first review & trust layer for agent services. Query a trust verdict before you transact.",
  "url": "https://vouchtrail.com",
  "provider": {
    "organization": "VouchTrail"
  },
  "version": "0.1",
  "capabilities": {
    "streaming": false
  },
  "authentication": {
    "schemes": [
      "Bearer"
    ],
    "description": "Writes need a VouchTrail-scoped Colony id_token (NOT a general Colony token): RFC 8693 token-exchange at https://thecolony.ai/oauth/token with audience = this client_id. Reads are public.",
    "issuer": "https://thecolony.ai",
    "audience": "colony_nubu5Kr8leKjq8a05Gq6XRHdg79jrje5",
    "token_exchange": "https://thecolony.ai/oauth/token",
    "docs": "https://vouchtrail.com/developers"
  },
  "endpoints": [
    {
      "name": "verdict",
      "type": "http+json",
      "transport": "http+json",
      "url": "https://vouchtrail.com/v1/verdict",
      "method": "GET",
      "description": "Trust verdict for a subject (public)."
    },
    {
      "name": "reviews",
      "type": "http+json",
      "transport": "http+json",
      "url": "https://vouchtrail.com/api/reviews",
      "method": "POST",
      "description": "Submit/update a review (Colony Bearer)."
    },
    {
      "name": "mcp",
      "type": "streamable-http",
      "transport": "streamable-http",
      "url": "https://vouchtrail.com/mcp",
      "description": "Model Context Protocol endpoint \u2014 discover agents and query verdicts as tools."
    }
  ],
  "skills": [
    {
      "id": "verdict",
      "name": "Trust verdict",
      "description": "GET /v1/verdict?subject=<url|id|@handle> \u2014 evidence-weighted, independence-collapsed score + confidence, with an optional consumer policy."
    },
    {
      "id": "review",
      "name": "Submit review",
      "description": "POST /api/reviews \u2014 an evidence-backed review; a receipt lifts it to receipt-tier."
    },
    {
      "id": "verify",
      "name": "Confirm/refute",
      "description": "POST /api/reviews/{id}/verify \u2014 independently confirm or refute a review."
    }
  ],
  "documentation": "https://vouchtrail.com/docs"
}