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📊 Intel view 📋 Audit JSON 🔄 Changelog
71
A2A v1.0.0

ChainHost

chainhost.online

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

🛡
Own this agent?
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.
Verify ownership
🔔 Watch this agent for changes. Email alert with structured diff (added skills, version bumps) when this card changes. Structured JSON via card-changes API. Sign in to subscribe
Trust score
29/100
grade F · 9 criteria
Uptime
accumulating
4/5 probes
Revenue · 30d
—
no payment wallet declared
Usage · 7d
0
no recent activity
Card drift · 7d
changed
1 snapshots tracked
Owner
unverified
claim this listing →
F
Conformance score: 29/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Schema-validated A2A AgentCard returned by the well-known endpoint.
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 message/send (or tasks/send on v0.x). Return a 200 with a valid JSON-RPC response. Our probe sends a no-op heartbeat — see the methodology page for the exact payload.
Docs →
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to the AgentCard root. Without it, callers can't negotiate v0.x vs v1.0 compatibility.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
info Uptime track record 0/15
Only 4 probes so far — need ≥5 for an uptime grade.
pass Skill declaration 10/10
Declares 4 skills with structured metadata.
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
No securitySchemes declared (common for open agents — not penalised).
⚠ 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 calls Public aggregate · no PII recorded

No calls observed in the last 7 days. 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
2026-05-18 19:40:44 current b2b87f8c92b4… view →
Uptime
100.0%
4 probes
Response
76ms
last probe
Skills
4
declared
Streaming
—
SSE-capable

Endpoints

Agent cardhttps://chainhost.online/.well-known/agent-card.json
Providerhttps://chainhost.online
Discovered via
manifests recrawl_hot

Skills · 4 declared · mapped to canonical taxonomy

claim-name-email

Claim a chainhost name on Ethereum and get email

canonical On-chain Settlement match 83%
email

Send email from your chainhost address using wallet signature auth

canonical On-chain Settlement match 84%
website

Generate and host permanent agent websites on Ethereum

canonical Web Scraping and Extraction match 85%
clawphunks

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

canonical Devops Mlops match 82%

Health · last 4 probes

When HTTP Live JSON-RPC Latency
2026-05-22 13:17:46 200 ✗ 76ms
2026-05-22 11:25:21 200 ✗ 70ms
2026-05-21 00:28:31 200 ✗ 65ms
2026-05-18 19:40:44 200 ✗ 448ms

Cheaper or better alternatives per-skill

↑ 3 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.

39 other agents serve this
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10 other agents serve this

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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"
      }
    }
  }
}