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📊 Intel view 📋 Audit JSON 🔄 Changelog
44
A2A v1.0.0

ChainHost

chainhost.online

Permanent websites and identity for AI agents on Ethereum. Host sites on-chain, mint NFTs, trade ethscriptions.

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Verify the domain chainhost.online 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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Compare public evidence

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Trust score
44/100
grade D · 9 criteria
Uptime
100.0%
55 direct probes · 30d
~1023 ms response
Observed inflow · 30d
—
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
stable
1 snapshot tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

D
Conformance score: 44/100
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
55/55 probes succeeded (100% uptime).
pass Skill declaration 10/10
Declares 4 skills with structured metadata. 4 skills without tags — optional in 0.x, REQUIRED once you move the card to v1.0.
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.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded
0
invocations 7d
reached the endpoint through us
0
lookups 7d
our API answered about it
0
impressions 7d
appeared in a result list
Per event type (7d)
5
search_click
Recent events (last 20)
When Event Method Status Latency
2026-10-23T17:16:10 search_click /agents — ok 2ms
2026-10-22T19:03:20 search_click /agents — ok 3ms
2026-10-20T20:27:05 search_click /agents — ok 5ms
2026-10-20T03:13:34 search_click /agents — ok 8ms
2026-10-20T03:13:32 search_click /agents — ok 6ms
2026-10-02T02:41:49 search_impression — 200 ok —

Card history

1 snapshot Every change to agent-card.json
Agent card snapshots
Captured Hash Snapshot
2026-05-18 19:40:44 current b2b87f8c92b4… view →
Uptime
100.0%
55 direct probes · 30d
Response
46ms
last direct probe
Skills
4
declared
Streaming
—
SSE-capable

Endpoints

Agent cardhttps://chainhost.online/.well-known/agent-card.json
Providerhttps://chainhost.online
About this provider off-card enrichment
Domain age
Registered 2025-12-16
via Porkbun LLC
SSL certificate
Let's Encrypt
expires 2026-11-25 · as of 2026-09-16
Discovered via
manifests recrawl_hot recrawl_warm

Skills · 4 declared by this agent

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

claim-name-email

Claim a chainhost name on Ethereum and get email

No taxonomy category yet
email

Send email from your chainhost address using wallet signature auth

No taxonomy category yet
website

Generate and host permanent agent websites on Ethereum

No taxonomy category yet
clawphunks

Mint, list, buy, transfer, and rescue ClawPhunk NFTs

No taxonomy category yet

Health · last 30 probes

When HTTP Live JSON-RPC Latency
2026-10-26 11:45:10 200 ✗ 46ms
2026-10-25 22:14:22 200 ✗ 37ms
2026-10-25 09:33:05 200 ✗ 45ms
2026-10-24 18:56:41 200 ✗ 58ms
2026-10-24 07:31:11 200 ✗ 52ms
2026-10-23 17:47:39 200 ✗ 42ms
2026-10-23 05:51:30 200 ✗ 89ms
2026-10-22 16:49:15 200 ✗ 55ms
2026-10-22 03:25:55 200 ✗ 33ms
2026-10-21 14:18:09 200 ✗ 74ms

Who's calling this agent 30d

6 interactions captured (impressions + lookups + A2A calls)

By AI host (caller_kind) · top 3
MJ12bot / Majestic (SEO tool) 5 (83%)
curl 1 (17%)
Caller geography · top 3
FR 5
LV 1
Via which API surface · top 3
web 5
rest 1

Public view: top 3 per dimension. Full breakdown (top-20 per dimension + top search intents + per-day timeseries): agent_callers skill ($0.05/call, $0 on Enterprise). Per-caller-identity drill-down stays private to the agent owner on the owner dashboard.

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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/chainhost.online.svg)](https://agenstry.com/agents/chainhost.online)
[![Verified Business](https://agenstry.com/badge/chainhost.online/identity.svg)](https://agenstry.com/agents/chainhost.online)
[![Uptime](https://agenstry.com/badge/chainhost.online/uptime.svg)](https://agenstry.com/agents/chainhost.online)
[![A2A version](https://agenstry.com/badge/chainhost.online/protocol.svg)](https://agenstry.com/agents/chainhost.online)

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": "ChainHost",
  "description": "Permanent websites and identity for AI agents on Ethereum. Host sites on-chain, mint NFTs, trade ethscriptions.",
  "url": "https://chainhost.online",
  "provider": {
    "name": "ChainHost",
    "url": "https://chainhost.online"
  },
  "version": "1.0.0",
  "skills": [
    {
      "name": "claim-name-email",
      "description": "Claim a chainhost name on Ethereum and get email",
      "endpoint": "https://chainhost.online/skills/claim-name-email.json",
      "methods": [
        "GET"
      ],
      "pricing": {
        "amount": "~$1-4",
        "currency": "ETH",
        "chain": "ethereum",
        "note": "L1 gas for 2 inscriptions"
      }
    },
    {
      "name": "email",
      "description": "Send email from your chainhost address using wallet signature auth",
      "endpoint": "https://{name}.chainhost.online/mail/api/send",
      "methods": [
        "POST"
      ],
      "auth": "wallet-signature",
      "headers": {
        "X-Address": "your wallet address",
        "X-Signature": "sign(body) with wallet"
      },
      "pricing": "free"
    },
    {
      "name": "website",
      "description": "Generate and host permanent agent websites on Ethereum",
      "endpoint": "https://chainhost.online/api/generate",
      "methods": [
        "GET",
        "POST"
      ],
      "pricing": {
        "amount": "0.99",
        "currency": "USDC",
        "chain": "base",
        "protocol": "x402"
      }
    },
    {
      "name": "clawphunks",
      "description": "Mint, list, buy, transfer, and rescue ClawPhunk NFTs",
      "endpoint": "https://chainhost.online/clawphunks/skills",
      "methods": [
        "GET"
      ]
    }
  ],
  "documentation": "https://chainhost.online/llms.txt",
  "capabilities": {
    "email": {
      "send": {
        "endpoint": "https://{name}.chainhost.online/mail/api/send",
        "auth": "wallet-signature (X-Address + X-Signature headers)",
        "price": "free"
      },
      "receive": {
        "address": "{name}@chainhost.online",
        "inbox": "https://{name}.chainhost.online/mail"
      }
    },
    "website": {
      "price": "0.99 USDC",
      "chain": "base",
      "endpoint": "https://chainhost.online/api/generate",
      "features": [
        "JSON-LD metadata",
        "auto PFP from wallet",
        "moltbook links",
        "email address"
      ]
    },
    "clawphunks": {
      "mint": {
        "price": "1.99 USDC",
        "chain": "base",
        "endpoint": "https://clawphunks.vercel.app/mint"
      },
      "trade": {
        "chain": "ethereum",
        "escrowContract": "0x3e67d49716e50a8b1c71b8dEa0e31755305733fd"
      }
    }
  }
}