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📊 Intel view 📋 Audit JSON 🔄 Changelog
66
A2A x402 micropay

merona

api.merona.io

Check before you pay. Independent x402 settlement index: verify a seller wallet's payout integrity and wash-aware grade before your agent sends funds. Free — no key, no signup.

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Verify the domain api.merona.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.
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🔔 Watch this agent. Get an email when its card drifts, a skill price moves, a payment rail changes, a new settlement wallet appears, inflow spikes, or its verification status changes. 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
40/100
grade D · 9 criteria
Uptime
100.0%
7 direct probes · 30d
~275 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

D
Conformance score: 40/100
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 0/25
Card declares a URL but that URL returns 404.
How to earn +25 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.
Docs →
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` 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
7/7 probes succeeded (100% uptime).
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 5/5
declares 1 modern capability flag(s) (x402); 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
2026-08-16 19:41:34 current cfe054b63094… view →
Uptime
100.0%
7 direct probes · 30d
Response
266ms
last direct probe
Skills
4
declared
Streaming
—
SSE-capable

Endpoints

Agent cardhttps://api.merona.io/.well-known/agent-card.json
Discovered via
mcp_registry

Skills · 4 declared · mapped to canonical taxonomy

payTo integrity check

Does an x402 endpoint or wallet pay out where it claims? Returns catalog-vs-live payout mismatch, dated rotation history, on-chain settlement presence.

canonical X402 Usdc Payments match 87%
wash-aware seller grade (m.Score)

A–F seller grade with component breakdown, multi-hop wash-cycle flags and a re-derivable snapshot hash.

canonical Car Wash and Detailing match 81%
payout-mismatch feed

Endpoints advertising one payout wallet while asking payers for another — nightly, machine-readable.

canonical X402 Usdc Payments match 82%
wash-adjusted volume

Settlement volume per chain after funded loops and self-dealing cycles are removed.

canonical On-chain Settlement match 83%

Health · last 7 probes

When HTTP Live JSON-RPC Latency
2026-08-19 09:32:54 200 ✗ 266ms
2026-08-19 01:37:44 200 ✗ 280ms
2026-08-18 18:14:37 200 ✗ 265ms
2026-08-18 07:37:09 200 ✗ 297ms
2026-08-17 23:36:31 200 ✗ 261ms
2026-08-17 07:20:57 200 ✗ 296ms
2026-08-16 19:41:34 200 ✗ 288ms

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.

X402 Usdc Payments agent_skills
50 other agents serve this
6 other agents serve this
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
Markdown / HTML snippets 
[![Agenstry grade](https://agenstry.com/badge/api.merona.io.svg)](https://agenstry.com/agents/api.merona.io)
[![Verified Business](https://agenstry.com/badge/api.merona.io/identity.svg)](https://agenstry.com/agents/api.merona.io)
[![Uptime](https://agenstry.com/badge/api.merona.io/uptime.svg)](https://agenstry.com/agents/api.merona.io)
[![A2A version](https://agenstry.com/badge/api.merona.io/protocol.svg)](https://agenstry.com/agents/api.merona.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": "merona",
  "title": "merona \u2014 trust tooling for agents",
  "description": "Check before you pay. Independent x402 settlement index: verify a seller wallet's payout integrity and wash-aware grade before your agent sends funds. Free \u2014 no key, no signup.",
  "url": "https://api.merona.io",
  "site": "https://merona.io",
  "pricing": "free \u2014 no key, no signup",
  "protocols": {
    "mcp": {
      "endpoint": "https://api.merona.io/mcp",
      "transport": "streamable-http",
      "manifest": "/mcp.json"
    },
    "rest": {
      "base": "https://api.merona.io/v1/",
      "auth": "none required"
    }
  },
  "skills": [
    {
      "id": "payto_check",
      "name": "payTo integrity check",
      "description": "Does an x402 endpoint or wallet pay out where it claims? Returns catalog-vs-live payout mismatch, dated rotation history, on-chain settlement presence.",
      "invoke": {
        "mcp_tool": "payto_check",
        "rest": "GET /check?q=<wallet|url>"
      },
      "cost": "free"
    },
    {
      "id": "trust_score",
      "name": "wash-aware seller grade (m.Score)",
      "description": "A\u2013F seller grade with component breakdown, multi-hop wash-cycle flags and a re-derivable snapshot hash.",
      "invoke": {
        "mcp_tool": "trust_score",
        "rest": "GET /v1/trust/{chain}/{address}"
      },
      "cost": "free (optional x402 receipts path, $0.001/call)"
    },
    {
      "id": "mismatch_feed",
      "name": "payout-mismatch feed",
      "description": "Endpoints advertising one payout wallet while asking payers for another \u2014 nightly, machine-readable.",
      "invoke": {
        "mcp_tool": "mismatch_feed",
        "rest": "GET /mismatches.json"
      },
      "cost": "free"
    },
    {
      "id": "clean_stats",
      "name": "wash-adjusted volume",
      "description": "Settlement volume per chain after funded loops and self-dealing cycles are removed.",
      "invoke": {
        "mcp_tool": "clean_stats"
      },
      "cost": "free"
    }
  ],
  "contact": "hello@merona.io"
}