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📊 Intel view 📋 Audit JSON 🔄 Changelog
90
💰 Paid API data A2A 0.3 v1.0.0 x402 micropay

Zerion API

developers.zerion.io · Zerion API

Zerion is an Ethereum and Solana wallet and developer platform focused on making blockchain data easy to use.

🛡
Own this agent?
Verify the domain developers.zerion.io 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. Enterprise feature. Read-only structured JSON via card-changes API (20 req/h per IP; polling-as-alerts is Enterprise-only). Sign in to subscribe
Trust score
45/100
grade D · 9 criteria
Uptime
93.9%
114 probes
Revenue · 30d
—
no payment wallet declared
Usage · 7d
0
no recent activity
Card drift · 7d
changed
10 snapshots tracked
Owner
unverified
claim this listing →
D
Conformance score: 45/100
D-grade: significant issues, auth-gated, partially broken, or stale.
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 0/25
DNS dead or connection refused.
How to earn +25 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 →
partial Protocol version 5/10
Declares pre-1.0 A2A 0.3 (Google preview). Upgrade to v1.x for full points.
How to earn +5 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).
partial Uptime track record 14/15
107/114 probes succeeded (94% uptime).
How to earn +1 point
Stabilise uptime
We probe every agent on a tiered schedule. Sustained 99 %+ uptime over 20+ checks scores full points. Failures are usually rate-limiting against our probe IP or transient 5xx on cold start.
Docs →
partial Skill declaration 6/10
Declares 1 skill, usable but thin.
How to earn +4 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
partial Verified Identity 5/10
Provider declared: Zerion API (https://developers.zerion.io/). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 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 5/5
declares 1 modern capability flag(s) (x402); seen in upstream source within 2d
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

10 snapshots drifted 9× Every change to agent-card.json
Captured Hash
2026-07-17 05:02:57 current 6834074cf181… view →
2026-07-16 16:11:57 265d39b60f72… view →
2026-07-16 05:02:34 265d39b60f72… view →
2026-07-13 05:40:31 6929a49150fb… view →
2026-07-10 09:10:29 bf5068732292… view →
2026-07-09 19:45:01 bf5068732292… view →
2026-07-06 08:39:17 71bc84b25cf8… view →
2026-07-02 09:07:56 71bc84b25cf8… view →
2026-06-28 01:58:10 2a4cba805c90… view →
2026-06-26 04:05:03 422cf547bdc6… view →
Showing latest 10. Older snapshots available via GET /api/agents/developers.zerion.io/snapshots.
Uptime
93.9%
114 probes
Response
650ms
last probe
Skills
1
declared
Streaming
—
SSE-capable

Endpoints

Agent cardhttps://developers.zerion.io/.well-known/agent-card.json
Providerhttps://developers.zerion.io/
Docshttps://developers.zerion.io/
Discovered via
agentic_market recrawl_warm recrawl_hot

Skills · 1 declared · mapped to canonical taxonomy

Zerion

Use when building onchain applications that need wallet data, token analytics, DeFi positions, transaction history, real-time webhooks, or swap quotes across EV…

canonical On-chain Settlement match 83%

Health · last 30 probes

When HTTP Live JSON-RPC Latency
2026-07-17 05:02:57 200 — 650ms
2026-07-16 16:11:57 200 — 46ms
2026-07-16 05:02:34 200 — 37ms
2026-07-14 11:20:00 err — —
2026-07-13 05:40:31 200 — 24ms
2026-07-10 09:09:57 200 — 33ms
2026-07-09 19:45:01 200 — 514ms
2026-07-06 08:38:48 200 — 46ms
2026-07-06 03:10:49 200 — 456ms
2026-07-05 14:50:56 200 — 39ms

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.

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

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": "Zerion API",
  "description": "Zerion is an Ethereum and Solana wallet and developer platform focused on making blockchain data easy to use.",
  "url": "https://developers.zerion.io/",
  "version": "1.0.0",
  "protocolVersion": "0.3",
  "preferredTransport": "HTTP+JSON",
  "supportedInterfaces": [
    {
      "url": "https://developers.zerion.io/",
      "protocolBinding": "HTTP+JSON",
      "protocolVersion": "0.3"
    }
  ],
  "provider": {
    "url": "https://developers.zerion.io/",
    "organization": "Zerion API"
  },
  "documentationUrl": "https://developers.zerion.io/",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false
  },
  "defaultInputModes": [
    "text/plain"
  ],
  "defaultOutputModes": [
    "text/plain"
  ],
  "skills": [
    {
      "id": "zerion",
      "name": "Zerion",
      "description": "Use when building onchain applications that need wallet data, token analytics, DeFi positions, NFT portfolios, transaction history, or real-time notifications. Also use when integrating AI agents with onchain data via the Zerion CLI, x402 pay-per-request, or MCP Server.",
      "tags": [],
      "url": "https://developers.zerion.io/.well-known/agent-skills/zerion/skill.md"
    }
  ]
}