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📊 Intel view 📋 Audit JSON 🔄 Changelog
70
💰 Paid API

X402-Retire-Git-Feat-Paid-Indexing-Gate-And-Openapi-Carbonmark

x402-retire-git-feat-paid-indexing-gate-and-openapi-carbonmark.vercel.app · x402-retire-git-feat-paid-indexing-gate-and-openapi-carbonmark.vercel.app

Live snapshot of the most liquid carbon credits retirable on Base: the top 3 Klima Protocol carbon classes and the top 3 Carbonmark marketplace listings, with USDC-per-tonne prices and tonnes available. Additionally, the additional endpoints to quote and retire carbon are included; query those endpoints for further discovery, quotes, and retirements. Query /.well-known, /openapi, and /discover to get started.

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Verify the domain x402-retire-git-feat-paid-indexing-gate-and-openapi-carbonmark.vercel.app 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
Our probe of this card is currently failing — 404 not found
We tried /.well-known/agent-card.json and got a 404. Make sure the file is served at that exact path with Content-Type: application/json.
Last attempt: 2026-10-04 05:14 Last success: 2026-10-04 Status: 404
Raw error HTTP 404
Trust score
34/100
grade F · 9 criteria
Uptime
0.0%
7 direct probes · 30d
Observed inflow · 30d
$2.40
105 tx · on-chain
Invocations · 7d
0
no calls observed
Card drift · 7d
changed
0 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

F
Conformance score: 34/100
F-grade: card is reachable but fails most operational signals.
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).
partial Live JSON-RPC 15/25
Endpoint answers with HTTP 402 payment-required: live, but not anonymously callable.
How to earn +10 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).
fail Uptime track record 0/15
0/7 probes succeeded (0% uptime).
How to earn +15 points
Stabilise uptime
We probe every agent on a tiered schedule and grade the last 30 days. Sustained 99 %+ uptime over 20+ conclusive probes scores full points. Probes you refuse us (HTTP 429/403, a WAF challenge, robots.txt) no longer count against you either way, so what is left is genuine unavailability — usually a transient 5xx on cold start.
Docs →
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 →
partial Verified Identity 5/10
Provider declared: x402-retire-git-feat-paid-indexing-gate-and-openapi-carbonmark.vercel.app (https://x402-retire-git-feat-paid-indexing-gate-and-openapi-carbonmark.vercel.app/). 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 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.

Uptime
0.0%
7 direct probes · 30d
Response
—
last direct probe
Skills
0
declared
Streaming
—
SSE-capable

Endpoints

Pricing x402 on Base USDC Verified live · 402 challenge Dispute or improve this rating
From $0.0010 per call
Endpoint Price Currency
https://x402-retire-git-feat-paid-indexing-gate-and-openapi-carbonmark.vercel.app/api/catalog 0.001 USDC
Try it ↗ Opens the operator's playground / docs in a new tab.
Settlement wallet: 0xf624f9fe1d3165c5ca32c7fbdbf82f4a5b1d2d0e on Base · basescan ↗
Observed on-chain inflow verified on-chain
Last 7d
$1.78
76 transfers · synced 2026-10-03
Last 30d
$2.40
105 transfers · synced 2026-10-03
USDC inflows on Base. Reproducible via eth_getLogs on USDC Transfer events to the wallet. Inflow to a wallet, not proof that every transfer was a paid call.
Daily 30-day observed-inflow history new
2026-09-18 2026-10-04
Peak day: $2.40 Data points: 15 Total tx (30d window): 105
Payment authenticity evidence confidence How we measure this →
single_payer_observed 2/5

Payer identities observed; a single payer accounts for effectively all observed volume.

Assessed window
30d
1 active of 27 observed
Inflow assessed
$0.00
1 transactions
Payer identities
available
3 evidence caveats
shared_settlement_wallet — The settlement wallet is shared with other indexed agents, so inflow cannot be attributed to this agent alone.
Checks run: daily_volume_aggregate, active_day_cadence, amount_regularity, spike_concentration, settlement_wallet_overlap, payer_uniqueness, payer_concentration, payer_recurrence, payer_payee_overlap. Derived from agent_revenue_daily, agents.payment_wallet, agent_payment_transactions. Measured 2026-10-03.
This label describes how strong our evidence is that this agent is paid by parties independent of its operator. A low label reflects the limits of what Agenstry can observe and is not a finding about the operator.
Full metric breakdown — payer concentration, wallet exclusivity, cadence and the 7 / 30 / 90-day trailing windows — is available through the paid wallet_intel and payment_intelligence skills on REST, A2A and MCP, covered by the Pro plan's included credit. API docs →
Agent cardhttps://x402-retire-git-feat-paid-indexing-gate-and-openapi-carbonmark.vercel.app/.well-known/agent-card.json
Providerhttps://x402-retire-git-feat-paid-indexing-gate-and-openapi-carbonmark.vercel.app/
Docshttps://x402-retire-git-feat-paid-indexing-gate-and-openapi-carbonmark.vercel.app
Discovered via
agentic_market recrawl_warm cdp_discovery

Health · last 7 probes

When HTTP Live JSON-RPC Latency
2026-10-04 04:04:42 404 — —
2026-10-03 22:20:10 404 — —
2026-10-03 15:10:10 404 — —
2026-10-03 09:09:00 404 — —
2026-10-03 03:31:23 404 — —
2026-10-02 20:49:55 404 — —
2026-10-02 14:25:03 404 — —

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Agenstry grade Uptime
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[![Verified Business](https://agenstry.com/badge/x402-retire-git-feat-paid-indexing-gate-and-openapi-carbonmark.vercel.app/identity.svg)](https://agenstry.com/agents/x402-retire-git-feat-paid-indexing-gate-and-openapi-carbonmark.vercel.app)
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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 
{
  "_source": "cdp_discovery",
  "resource_count": 1,
  "sample": "https://x402-retire-git-feat-paid-indexing-gate-and-openapi-carbonmark.vercel.app/api/catalog"
}