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📊 Intel view 📋 Audit JSON 🔄 Changelog
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💰 Paid API

X402-Production-F1C8

x402-production-f1c8.up.railway.app · x402-production-f1c8.up.railway.app

Prevent a sharp upgrade that installs cleanly but fails after native loading or @vercel/nft tracing. For one supported Node/Linux amd64 target, compare sharp 0.35.1-0.35.3 on a clean canonical fixture and receive an exact npm pin plus package.json, npm and Docker actions only when a prebuilt candidate passes twice. The response includes an explicit expiry and a recalculable digest. It does not inspect or test the buyer's repository.

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🛡
Own this agent?
Verify the domain x402-production-f1c8.up.railway.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.
Verify ownership
🔔 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: 2026-08-19 02:44 Last success: 2026-07-26 Status: 404
Raw error HTTP 404
Trust score
34/100
grade F · 9 criteria
Uptime
0.0%
22 direct probes · 30d
Observed inflow · 30d
$0.00
wallet active · no inflow
Invocations · 7d
0
no calls observed
Card drift · 7d
stable
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.
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).
fail Uptime track record 0/15
0/22 probes succeeded (0% uptime).
How to earn +15 points
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 →
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`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
partial Verified Identity 5/10
Provider declared: x402-production-f1c8.up.railway.app (https://x402-production-f1c8.up.railway.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.

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

Endpoints

Pricing x402 on Base Sepolia USDC
From $0.0010 per call
This agent accepts x402 payments but did not publish a per-endpoint price map.
Try it ↗ Opens the operator's playground / docs in a new tab.
Settlement wallet: 0x7c828e2fb400dccc95d80b866f2ec825deb96c51 · basescan ↗
Agent cardhttps://x402-production-f1c8.up.railway.app/.well-known/agent-card.json
Providerhttps://x402-production-f1c8.up.railway.app/
Docshttps://x402-production-f1c8.up.railway.app/v1/sharp/release-choice
Discovered via
cdp_discovery recrawl_hot recrawl_warm

Health · last 22 probes

When HTTP Live JSON-RPC Latency
2026-08-19 02:44:17 404 — —
2026-08-18 03:35:04 404 — —
2026-08-17 03:33:19 404 — —
2026-08-16 04:05:52 404 — —
2026-08-15 07:02:00 404 — —
2026-08-14 09:49:52 404 — —
2026-08-13 15:21:43 404 — —
2026-08-12 17:52:52 404 — —
2026-08-11 18:58:27 404 — —
2026-08-11 01:45:15 404 — —

Who's calling this agent 30d

2 interactions captured (impressions + lookups + A2A calls)

By AI host (caller_kind) · top 3
Unknown (no UA) 2 (100%)
Caller geography · top 3
CA 2
Via which API surface · top 3
rest 2

Public teaser: top-3 per dimension only. 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/x402-production-f1c8.up.railway.app.svg)](https://agenstry.com/agents/x402-production-f1c8.up.railway.app)
[![Verified Business](https://agenstry.com/badge/x402-production-f1c8.up.railway.app/identity.svg)](https://agenstry.com/agents/x402-production-f1c8.up.railway.app)
[![Uptime](https://agenstry.com/badge/x402-production-f1c8.up.railway.app/uptime.svg)](https://agenstry.com/agents/x402-production-f1c8.up.railway.app)
[![A2A version](https://agenstry.com/badge/x402-production-f1c8.up.railway.app/protocol.svg)](https://agenstry.com/agents/x402-production-f1c8.up.railway.app)

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-production-f1c8.up.railway.app/v1/sharp/release-choice"
}