x402-doctor.fizzl.eu
x402-doctor.fizzl.eu
· x402-doctor.fizzl.eu
Checks x402 endpoints before an AI agent pays them: a $0.001 pre-payment check (go / caution / no_go, payout address screened against OFAC), a $0.01 full diagnosis with a fix hint per check, the fix as code, and a $0.25 paid delivery check that buys the endpoint once. Pay in USDC on Base, Solana or Algorand, or RLUSD on the XRP Ledger.
x402-doctor.fizzl.eu via a single DNS TXT record to add the
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C
Conformance score: 60/100
Catalogue listing, not an A2A agent: a paid API listed by agentic.market. Scored on the 3 criteria that apply (24 of 40 points, scaled to 100); the A2A card criteria do not apply.
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Activity (audit trail)
last 24h · 0 invocations Public aggregate · no PII recordedNothing 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.
Listing history
8 snapshots drifted 7× Every change to the catalogue entry| Captured | Hash | Snapshot |
|---|---|---|
| 2026-10-18 19:17:50 current | 0fb53cf12fec… |
view → |
| 2026-10-17 08:59:23 | 5dd07ddcb020… |
view → |
| 2026-10-14 04:24:43 | 1e779259a1c4… |
view → |
| 2026-10-12 16:23:09 | 4af664b90080… |
view → |
| 2026-10-12 15:50:58 | c2c12dff0f07… |
view → |
| 2026-10-09 12:27:03 | 7954396e3eaf… |
view → |
| 2026-10-05 22:53:55 | c2c12dff0f07… |
view → |
| 2026-09-28 12:58:43 | 8ad32e36e683… |
view → |
Endpoints
| Endpoint | Price | Currency |
|---|---|---|
https://x402-doctor.fizzl.eu/api/v1/fix
|
0.05 | USDC |
https://x402-doctor.fizzl.eu/api/v1/diagnose
|
0.01 | USDC |
https://x402-doctor.fizzl.eu/api/v1/preflight
|
0.001 | USDC |
https://x402-doctor.fizzl.eu/api/v1/preflight/batch
|
0.005 | USD |
https://x402-doctor.fizzl.eu/api/v1/preflight/deep
|
0.01 | USD |
https://x402-doctor.fizzl.eu/api/v1/delivery-check
|
0.25 | USD |
0x6b0f4651ed42893ab58139938175e4a69f175f25 on Base
· basescan ↗
recurring_independent_payers
4/5
Several distinct payers observed, including repeat payers, with no single payer dominating.
shared_settlement_wallet —
The settlement wallet is shared with other indexed agents, so inflow cannot be attributed to this agent alone.
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 2026-10-25.
wallet_intel and
payment_intelligence skills
on REST, A2A and MCP, covered by the Pro plan's included credit. API docs →
| Agent card | https://x402-doctor.fizzl.eu/.well-known/agent-card.json |
| Provider | https://x402-doctor.fizzl.eu |
| Docs | https://x402-doctor.fizzl.eu |
Health · last 25 probes
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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.
Raw agent card JSON
{
"_source": "agentic.market",
"service": {
"id": "x402-doctor-fizzl-eu",
"name": "x402-doctor.fizzl.eu",
"description": "",
"domain": "x402-doctor.fizzl.eu",
"provider": "x402-doctor.fizzl.eu",
"providerUrl": "",
"category": "",
"networks": [
"Base",
"algorand:wghe2pwdvd7s12bl5faop20egyesn73ktic1qzkkit8=",
"solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp",
"stellar:pubnet",
"xrpl:0"
],
"enriched": false,
"endpoints": [
{
"url": "https://x402-doctor.fizzl.eu/api/v1/delivery-check",
"description": "Does this x402 endpoint really deliver? x402 Doctor buys it once with the example input its own listing declares (at most $0.1, USDC on Base), checks the answer against the declared output schema and measures the charge on chain. Answers with a job id at once; the result is public, usually within 30 minutes. For sellers who want proof, and buyers before a big order.",
"pricing": {
"amount": "0.25",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "url",
"type": "string",
"description": "",
"example": "https://rest.coincap.io/v3/agentFriendly/full_assets_by_slug",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402 Doctor",
"tags": [
"x402",
"payments",
"verification",
"delivery",
"trust"
],
"quality": {
"l30DaysTotalCalls": "1",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://x402-doctor.fizzl.eu/api/v1/diagnose",
"description": "Why is my x402 endpoint broken? Diagnose and debug an x402 payment endpoint (or MCP server) when payments fail: checks the 402 challenge, accepts[] (network, payTo, amount, asset), resource URL, Solana settlement readiness, which wallets and agents can pay, Bazaar/OpenAPI discovery and the browser paywall. Returns every check with a fix hint. Read-only: never pays. Bulk: 1000 credits for $0.80 via /api/v1/credits.",
"pricing": {
"amount": "0.01",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "method",
"type": "string",
"description": "",
"example": "GET",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "url",
"type": "string",
"description": "",
"example": "https://ichimoku-signal.fizzl.eu/signal/BTC-USDT",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402 Doctor",
"tags": [
"x402",
"developer-tools",
"diagnostics",
"debug",
"payments"
],
"quality": {
"l30DaysTotalCalls": "6",
"l30DaysUniquePayers": "5"
}
},
{
"url": "https://x402-doctor.fizzl.eu/api/v1/fix",
"description": "How do I fix my broken x402 endpoint? Diagnoses it, then returns per problem the concrete change as code for your stack (Express, Next.js, Hono or raw HTTP), filled in with your own payTo, amount, network and route. Bulk: 1000 credits for $0.80 via /api/v1/credits.",
"pricing": {
"amount": "0.05",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "url",
"type": "string",
"description": "",
"example": "https://x402-doctor.fizzl.eu/demo/broken",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402 Doctor",
"tags": [
"x402",
"developer-tools",
"fix",
"code"
],
"quality": {
"l30DaysTotalCalls": "4",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://x402-doctor.fizzl.eu/api/v1/preflight",
"description": "Is this x402 endpoint safe to pay? Call it before your AI agent pays an endpoint it has not used before. Returns a go / caution / no_go verdict, the recommended payment option (network and amount) and the reasons (payment would fail, payout address on the OFAC sanctions list, over your budget, price above advertised, not HTTPS, unknown token). Never pays the endpoint. Cached 10 min. Bulk: 1000 credits for $0.80 via /api/v1/credits.",
"pricing": {
"amount": "0.001",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "max_usd",
"type": "string",
"description": "",
"example": "0.05",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "url",
"type": "string",
"description": "",
"example": "https://ichimoku-signal.fizzl.eu/signal/BTC-USDT",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402 Doctor",
"tags": [
"x402",
"payments",
"safety",
"pre-payment",
"sanctions"
],
"quality": {
"l30DaysTotalCalls": "23",
"l30DaysUniquePayers": "6"
}
},
{
"url": "https://x402-doctor.fizzl.eu/api/v1/preflight/batch",
"description": "Are these x402 endpoints safe to pay? Up to 10 endpoints in one call (?url=a&url=b): per endpoint go / caution / no_go, the recommended payment option and why, plus totals. For marketplaces and agents that weigh several services. Never pays the endpoints. Bulk: 1000 credits for $0.80 via /api/v1/credits.",
"pricing": {
"amount": "0.005",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "max_usd",
"type": "string",
"description": "",
"example": "0.05",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "url",
"type": "array",
"description": "",
"example": [],
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402 Doctor",
"tags": [
"x402",
"payments",
"safety",
"pre-payment",
"batch"
],
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://x402-doctor.fizzl.eu/api/v1/preflight/deep",
"description": "Should my agent pay this expensive x402 endpoint? Call it before a costly or repeated payment. Returns the go / caution / no_go verdict plus the full diagnosis, the endpoint's check history per day over 30 days, how reliable the seller's other endpoints are and whether the endpoint moved domains. Never pays the endpoint. Bulk: 1000 credits for $0.80 via /api/v1/credits.",
"pricing": {
"amount": "0.01",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "max_usd",
"type": "string",
"description": "",
"example": "0.5",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "url",
"type": "string",
"description": "",
"example": "https://ichimoku-signal.fizzl.eu/setups",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402 Doctor",
"tags": [
"x402",
"payments",
"safety",
"pre-payment",
"due-diligence"
],
"quality": {
"l30DaysTotalCalls": "6",
"l30DaysUniquePayers": "4"
}
}
],
"integrationType": "",
"isNew": false,
"priceSummary": {
"minAmount": "0.001",
"maxAmount": "0.25",
"avgCostPerTransaction": "0.054333",
"avgCostBasis": "exact",
"currency": "USDC"
},
"serviceName": "x402 Doctor",
"tags": [
"x402",
"payments",
"verification",
"delivery",
"trust",
"developer-tools",
"diagnostics",
"debug",
"fix",
"code",
"safety",
"pre-payment",
"sanctions",
"batch",
"due-diligence"
],
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791125195/bazaar-icons/061c165bc4e51e45.png"
}
}