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📊 Intel view 📋 Audit JSON 🔄 Changelog
55
A2A

Headless Domains

headlessdomains.com

Persistent, verifiable, machine-readable identity for autonomous agents.

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🛡
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Verify the domain headlessdomains.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.
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1 thing in this card we could not use
Everything else was indexed. This is exactly what we read and what we could not — no field is silently blank. Fix the card at https://headlessdomains.com/.well-known/agent-card.json and the next probe clears this panel.
Field What we saw What we stored
capabilities Input should be a valid dictionary or instance of Capabilities dropped — this field was not indexed
Trust score
18/100
grade F · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
~171 ms response
Observed inflow · 30d
—
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
changed
1 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

F
Conformance score: 18/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾ click to collapse breakdown ▴
partial Valid AgentCard 9/10
AgentCard did not read cleanly: 1 field we could not read. Scored on what we could read, not on a card that arrived as published — the card findings name every affected field and what we did with it.
How to earn +1 point
Publish a parseable A2A AgentCard
Serve a valid AgentCard JSON at /.well-known/agent-card.json. The A2A 1.0 schema is the reference; we accept the v0.x backwards-compatible variant too.
Docs →
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).
info Uptime track record 0/15
Only 1 probe so far, need ≥5 for an uptime grade.
fail Skill declaration 0/10
No skills declared in card. Hard to route to.
How to earn +10 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags` — `description` and `tags` are REQUIRED on AgentSkill since A2A v1.0, and tags are what discovery filters match on. We canonicalise these into the global skill taxonomy on next probe.
Docs →
fail Verified Identity 0/10
No provider organisation declared. Anonymous agent.
How to earn +10 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.
⚠ Card drift detected. This agent's agent-card.json changed within the last 7 days. We track these so downstream callers can react.

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

1 snapshot Every change to agent-card.json
Captured Hash
2026-10-01 09:08:04 current 5a8fdb4fe806… view →
Uptime
accumulating
1 direct probes · 30d
Response
172ms
last direct probe
Skills
0
declared
Streaming
—
SSE-capable

Endpoints

Agent cardhttps://headlessdomains.com/.well-known/agent-card.json
Providerhttps://headlessdomains.com
Discovered via
smithery

Skills · 1 declared · mapped to canonical taxonomy

Headless Domains

Persistent, verifiable, machine-readable identity for autonomous agents.

canonical Agent Profiles match 86%

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-10-01 09:08:04 200 ✗ 172ms

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.

Agent Profiles agent_skills
50 other agents serve this

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Embed your Agenstry badge

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Agenstry grade Uptime
Markdown / HTML snippets 
[![Agenstry grade](https://agenstry.com/badge/headlessdomains.com.svg)](https://agenstry.com/agents/headlessdomains.com)
[![Verified Business](https://agenstry.com/badge/headlessdomains.com/identity.svg)](https://agenstry.com/agents/headlessdomains.com)
[![Uptime](https://agenstry.com/badge/headlessdomains.com/uptime.svg)](https://agenstry.com/agents/headlessdomains.com)
[![A2A version](https://agenstry.com/badge/headlessdomains.com/protocol.svg)](https://agenstry.com/agents/headlessdomains.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 
{
  "authentication": [
    "X-API-Key",
    "Bearer Token",
    "HTTP 402 Machine Payments Protocol"
  ],
  "capabilities": [
    "search_domain",
    "register_domain",
    "renew_domain",
    "lookup_domain",
    "publish_skill",
    "publish_agent_manifest",
    "resolve_agent_identity"
  ],
  "description": "Persistent, verifiable, machine-readable identity for autonomous agents.",
  "interfaces": {
    "auth": "https://headlessdomains.com/auth.md",
    "docs": "https://docs.headlessdomains.com",
    "llms": "https://headlessdomains.com/llms.txt",
    "mcp": "https://mcp.headlessdomains.com/.well-known/mcp",
    "oauth_authorization_server": "https://headlessdomains.com/.well-known/oauth-authorization-server",
    "oauth_protected_resource": "https://headlessdomains.com/.well-known/oauth-protected-resource",
    "openapi": "https://headlessdomains.com/openapi.json",
    "skill": "https://headlessdomains.com/skill.md"
  },
  "name": "Headless Domains",
  "provider": {
    "name": "Headless Domains",
    "url": "https://headlessdomains.com"
  },
  "url": "https://headlessdomains.com"
}