x402 List

x402 Protocol Service Directory

●

10x402

Verification PAYMENT-READY

payment-ready until 2026-10-11

x402 conformance lint: 75 checks against your live 402 with a specific fix for each finding, plus a separate Bazaar-indexability verdict. Every check cites its source (spec, client code, or CDP validator). The service lints its own 402s in CI and pays over x402 itself (v1+v2 dual-stack). Open source: github.com/chronick/10x402

Pay from $0.004 to $0.10 per request in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.

measured since 2026-08-20 (start of our harvest window) · $2.55 all-time · settled via coinbase

BASE URL https://10x402.com │ WEBSITE https://10x402.com │ ENDPOINTS 4 │ NETWORK Base / Solana │ ASSET USDC │ MEMBER SINCE 2026-08-20 │ MONITORED SINCE 2026-08-20

VERDICT

ranking generation 3

solid 88/100 #10 of 110 in Verification by measured score

What the score read on this service: status online, 100% uptime 30d, 487ms response p95, x402 compliance 14 of 14, $0.004 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

It is a score inside Verification, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 110 listings, this one among them. That set is wider than the 110 the position above is counted against, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

ALTERNATIVES IN VERIFICATION

Other Verification services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).

Ranked alternative x402 services in the same category, with band, measured score, 30-day uptime and 30-day on-chain settlement volume
SERVICE BAND SCORE UPTIME 30D VOL 30D
scvd.store — evidence observatory for the x402 economy strong 94 100% $1.1k
Rubric Protocol — Post-Quantum AI Attestation solid 93 99.8% $34.28
PHION Agent Services solid 89 99.9% $1.50
KushBitx AgentProof solid 89 100% $1.52
LION — Verified Company & Compliance Data solid 89 100% $5.72
5 of 109 other ranked services in Verification

ASSESSMENT

updated 6h ago

The parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.

reliability 100%
uptime · latest daily rollup
100%
uptime 7d
100%
uptime 30d
100%
uptime 90d
100%
response p95
487ms
avg response
303ms
total checks
2,718

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.004 to $0.10 (p20 in Verification)
price (min)
$0.004
price (max)
$0.10
category percentile (min)
p20 in Verification
category percentile (max)
p57 in Verification
endpoints / prices
4 / 4
model
tiered
stability
83%
risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age
43d
registrar
Cloudflare, Inc.
hosting
custom
domain created
2026-08-19

Identity facts, not a risk score.

traction $0.04 30d · 1 buyers · top buyer 100% (address, not entity)
volume 30d
$0.04
buyers 30d
1
settlements 30d
1
measured since
2026-08-20 (start of our harvest window)
last settlement
2026-09-20
top buyer share
100% of 30d volume (address, not entity)
trend 7d vs 30d
0.00x the 30d daily rate
networks
eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time
$2.55
settlements all-time
38
median settlement 30d
$0.04
max settlement 30d
$0.04
settled via
coinbase ($0.04, 1 tx)

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is part of the ranking score: a higher share lowers the traction part of the score, by up to half when one address holds all 30d volume.

WHAT IT DOES

ai-derived

No AI synthesis has been produced for this service yet.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
POST /lint $0.10 Base/Solana USDC header
POST /lint/envelope $0.04 Base/Solana USDC header
POST /lint/envelope/one $0.004 Base/Solana USDC header
POST /lint/one $0.015 Base/Solana USDC header
4 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to POST /lint returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i -X POST 'https://10x402.com/lint'
// 402 response (captured by monitor) · 4 payloads · click to expand 
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x885E7BEF433eb78F5976b28A7c10739c98DB11E5",
        "amount": "40000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
        },
        "payTo": "6Cg4g7rXQApimMc9wVJGLLZfHsvbwGpGrUpGDgyJ2RaP",
        "amount": "40000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 60
      }
    ],
    "resource": {
      "url": "https://10x402.com/lint/envelope",
      "tags": [
        "x402",
        "lint",
        "conformance",
        "developer-tools"
      ],
      "method": "POST",
      "mimeType": "application/json",
      "description": "Check a captured x402 402 for indexing and payment blockers — no fetch",
      "serviceName": "10x402"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": "{\"status\":402,\"headers\":{\"content-type\":\"application/json\"},\"body\":\"{\\\"x402Version\\\":1,\\\"accepts\\\":[{\\\"scheme\\\":\\\"exact\\\",\\\"network\\\":\\\"base\\\",\\\"maxAmountRequired\\\":\\\"1000\\\",\\\"resource\\\":\\\"https://example.com/api/thing\\\",\\\"description\\\":\\\"an example paid endpoint\\\",\\\"mimeType\\\":\\\"application/json\\\",\\\"payTo\\\":\\\"0x0000000000000000000000000000000000000001\\\",\\\"maxTimeoutSeconds\\\":60,\\\"asset\\\":\\\"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\\\",\\\"extra\\\":{\\\"name\\\":\\\"USD Coin\\\",\\\"version\\\":\\\"2\\\"},\\\"outputSchema\\\":{\\\"input\\\":{\\\"type\\\":\\\"http\\\",\\\"method\\\":\\\"POST\\\",\\\"discoverable\\\":true,\\\"bodyType\\\":\\\"text\\\",\\\"description\\\":\\\"the request body\\\"},\\\"output\\\":{\\\"type\\\":\\\"string\\\",\\\"description\\\":\\\"the response body\\\"}}}]}\"}",
            "type": "http",
            "method": "POST",
            "bodyType": "text"
          },
          "output": {
            "type": "text",
            "format": "application/json",
            "example": "{\"grade\":\"A\",\"summary\":{\"versions_detected\":[1],\"payTo\":\"0x0000000000000000000000000000000000000001\",\"network\":\"base\",\"price\":\"$0.001 (1000 atomic)\",\"bazaar_ready\":\"n/a\",\"blockers\":[\"V2_HEADER_PRESENT\"]},\"findings\":[{\"severity\":\"error\",\"code\":\"V2_HEADER_PRESENT\",\"message\":\"no PAYMENT-REQUIRED response header — this endpoint publishes no x402 v2 envelope.\",\"fix\":\"Add a PAYMENT-REQUIRED response header to the 402 carrying the standard-base64 JSON v2 envelope. This costs you DISCOVERY rather than payment, and the distinction is worth being precise about: @x402/core reads the header first but DOES fall back to a v1 body when there is none, so the current client generation can still pay you. What it cannot do is find you — CDP marks the PAYMENT-REQUIRED header a required indexing check, so a v1-only 402 is not catalogued at all, and a strictly-v2 client cannot pay it either. Keep the v1 body exactly as it is; the two versions share a 402 without either noticing the other.\",\"core\":false,\"sources\":[{\"kind\":\"spec\",\"ref\":\"specs/transports-v2/http.md:7-25 § Payment Required Signaling\"},{\"kind\":\"cdp-validator\",\"ref\":\"cdp-validator-toolshed.json preflight[6] payment_required_header (required)\"},{\"kind\":\"client-code\",\"ref\":\"@x402/[email protected] dist/cjs/http/index.js:1620-1628 — the v2 client DOES fall back to a v1 body\"},{\"kind\":\"field-report\",\"ref\":\"x402-foundation/x402#3091 — [email protected] is still a live buyer population\"}]},{\"severity\":\"info\",\"code\":\"BILLING_TERMS_DISCLOSED\",\"message\":\"no machine-readable billing-terms object was found. Consulted: the 402 (accepts[].extra.billing_terms); /.well-known/x402 resources[].billing_terms (not supplied); OpenAPI x-billing-terms (not supplied). Prose in `description` was not parsed.\",\"fix\":\"Publish a billing-terms object with all four keys, in any ONE of: `accepts[].extra.billing_terms` in the 402 (always read), `resources[].billing_terms` in /.well-known/x402, or `x-billing-terms` on the OpenAPI operation (both read only when the caller supplies them). e.g. {\\\"billable_unit\\\":\\\"1 second\\\",\\\"hold\\\":\\\"the quote, released in 24h\\\",\\\"acceptance_observer\\\":\\\"the buyer\\\",\\\"silence_window\\\":\\\"72h\\\"}. Any JSON value counts; prose in `description` is not parsed. algonormative/10x402#10's block gives billable_unit and hold only: add acceptance_observer and silence_window. NOTHING REQUIRES THIS (no spec, client or registry): informational, moves neither verdict.\",\"core\":false,\"sources\":[{\"kind\":\"field-report\",\"ref\":\"Moltbook 92cd240a… (bitroadai), \\\"transport success is not billable completion\\\" — buyers asked for the minimum billable unit and what a hold covers\"},{\"kind\":\"field-report\",\"ref\":\"Moltbook 6868a451… / 2d2df453… (relayzero, @miacollective) — who observes acceptance, and how long silence counts as acceptance, as terms a buyer needs before paying\"},{\"kind\":\"house-opinion\",\"ref\":\"no spec requires these four, no client parses them, no registry demands them — this check can only REPORT. Key names from house PR algonormative/10x402#10\"},{\"kind\":\"spec\",\"ref\":\"specs/x402-specification-v2.md § 6.1 (Payment Flow Models), read 2026-09-09 — SILENT on all four\",\"context\":true}]}],\"checks_run\":29}"
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "string",
                  "maxLength": 262144,
                  "description": "a JSON object: { \"status\": 402, \"headers\": { \"payment-required\": \"…\", … }, \"body\": \"…\" }, up to 256 KB"
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "type": "string",
                  "const": "POST"
                },
                "bodyType": {
                  "type": "string",
                  "const": "text"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type",
                "format"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "text"
                },
                "format": {
                  "type": "string",
                  "const": "application/json",
                  "description": "a JSON lint report: grade, summary, findings[] and checks_run"
                },
                "example": {
                  "type": "string",
                  "description": "the sample request body above, actually run through this endpoint — or, when that run is larger than a response header should carry, an object naming its size and the free URL it is published at in full"
                }
              },
              "additionalProperties": false
            }
          }
        }
      },
      "origin_marker": {
        "header": "x-origin-marker"
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x885E7BEF433eb78F5976b28A7c10739c98DB11E5",
        "amount": "15000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "payTo": "6Cg4g7rXQApimMc9wVJGLLZfHsvbwGpGrUpGDgyJ2RaP",
        "amount": "15000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 60
      }
    ],
    "resource": {
      "url": "https://10x402.com/lint/one",
      "tags": [
        "x402",
        "lint",
        "conformance",
        "developer-tools"
      ],
      "method": "POST",
      "mimeType": "application/json",
      "description": "Run ONE named check against a live endpoint",
      "serviceName": "10x402"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": "{\"url\":\"https://toolshed.lemon-agent.dev/convert/md-html\",\"method\":\"POST\",\"check\":\"V2_B64_URLSAFE\"}",
            "type": "http",
            "method": "POST",
            "bodyType": "text"
          },
          "output": {
            "type": "text",
            "format": "application/json",
            "example": "{\"check\":\"V2_B64_URLSAFE\",\"applied\":true,\"passed\":true,\"finding\":null,\"regime\":\"payment\",\"severity\":\"error\",\"core\":true,\"sources\":[{\"kind\":\"client-code\",\"ref\":\"@x402/[email protected] dist/cjs/utils/index.js:133 — Base64EncodedRegex = /^[A-Za-z0-9+/]*={0,2}$/\"},{\"kind\":\"client-code\",\"ref\":\"@x402/[email protected] dist/cjs/http/index.js:1778-1781 — the regex is tested on the RAW header, then it throws, before any decode\"},{\"kind\":\"spec\",\"ref\":\"specs/transports-v2/http.md:7-25 § Payment Required Signaling — \\\"Base64-encoded\\\", SILENT on the alphabet\",\"context\":true}],\"summary\":{\"versions_detected\":[1,2],\"payTo\":\"0x0adc7adac7bbaffffbd73505711e42378c4f9f9e\",\"network\":\"eip155:8453\",\"price\":\"$0.001 (1000 atomic)\"},\"checks_run\":1}"
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "string",
                  "maxLength": 262144,
                  "description": "a JSON object: { \"url\": \"https://…\", \"check\": \"V2_B64_URLSAFE\" } — exactly one check id from GET /check, plus optionally { \"method\": \"POST\" | \"GET\" }, up to 256 KB"
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "type": "string",
                  "const": "POST"
                },
                "bodyType": {
                  "type": "string",
                  "const": "text"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type",
                "format"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "text"
                },
                "format": {
                  "type": "string",
                  "const": "application/json",
                  "description": "a JSON single-check report: check, applied, passed, the finding with its fix (or null), regime, sources and the envelope summary"
                },
                "example": {
                  "type": "string",
                  "description": "the sample request body above, actually run through this endpoint — or, when that run is larger than a response header should carry, an object naming its size and the free URL it is published at in full"
                }
              },
              "additionalProperties": false
            }
          }
        }
      },
      "origin_marker": {
        "header": "x-origin-marker"
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x885E7BEF433eb78F5976b28A7c10739c98DB11E5",
        "amount": "100000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "payTo": "6Cg4g7rXQApimMc9wVJGLLZfHsvbwGpGrUpGDgyJ2RaP",
        "amount": "100000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 60
      }
    ],
    "resource": {
      "url": "https://10x402.com/lint",
      "tags": [
        "x402",
        "lint",
        "conformance",
        "developer-tools"
      ],
      "method": "POST",
      "mimeType": "application/json",
      "description": "Find conformance blockers to x402 indexing and payment on a live endpoint",
      "serviceName": "10x402"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": "{\"url\":\"https://toolshed.lemon-agent.dev/convert/md-html\",\"method\":\"POST\"}",
            "type": "http",
            "method": "POST",
            "bodyType": "text"
          },
          "output": {
            "type": "text",
            "format": "application/json",
            "example": "{\"grade\":\"A\",\"summary\":{\"versions_detected\":[1,2],\"payTo\":\"0x0adc7adac7bbaffffbd73505711e42378c4f9f9e\",\"network\":\"eip155:8453\",\"price\":\"$0.001 (1000 atomic)\",\"bazaar_ready\":true,\"blockers\":[]},\"findings\":[{\"severity\":\"info\",\"code\":\"BILLING_TERMS_DISCLOSED\",\"message\":\"no machine-readable billing-terms object was found. Consulted: the 402 (accepts[].extra.billing_terms); /.well-known/x402 resources[].billing_terms (not supplied); OpenAPI x-billing-terms (not supplied). Prose in `description` was not parsed.\",\"fix\":\"Publish a billing-terms object with all four keys, in any ONE of: `accepts[].extra.billing_terms` in the 402 (always read), `resources[].billing_terms` in /.well-known/x402, or `x-billing-terms` on the OpenAPI operation (both read only when the caller supplies them). e.g. {\\\"billable_unit\\\":\\\"1 second\\\",\\\"hold\\\":\\\"the quote, released in 24h\\\",\\\"acceptance_observer\\\":\\\"the buyer\\\",\\\"silence_window\\\":\\\"72h\\\"}. Any JSON value counts; prose in `description` is not parsed. algonormative/10x402#10's block gives billable_unit and hold only: add acceptance_observer and silence_window. NOTHING REQUIRES THIS (no spec, client or registry): informational, moves neither verdict.\",\"core\":false,\"sources\":[{\"kind\":\"field-report\",\"ref\":\"Moltbook 92cd240a… (bitroadai), \\\"transport success is not billable completion\\\" — buyers asked for the minimum billable unit and what a hold covers\"},{\"kind\":\"field-report\",\"ref\":\"Moltbook 6868a451… / 2d2df453… (relayzero, @miacollective) — who observes acceptance, and how long silence counts as acceptance, as terms a buyer needs before paying\"},{\"kind\":\"house-opinion\",\"ref\":\"no spec requires these four, no client parses them, no registry demands them — this check can only REPORT. Key names from house PR algonormative/10x402#10\"},{\"kind\":\"spec\",\"ref\":\"specs/x402-specification-v2.md § 6.1 (Payment Flow Models), read 2026-09-09 — SILENT on all four\",\"context\":true}]}],\"checks_run\":78}"
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "string",
                  "maxLength": 262144,
                  "description": "a JSON object: { \"url\": \"https://…\" } and optionally { \"method\": \"POST\" | \"GET\" }, default POST, up to 256 KB"
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "type": "string",
                  "const": "POST"
                },
                "bodyType": {
                  "type": "string",
                  "const": "text"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type",
                "format"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "text"
                },
                "format": {
                  "type": "string",
                  "const": "application/json",
                  "description": "a JSON lint report: grade, summary, findings[] and checks_run"
                },
                "example": {
                  "type": "string",
                  "description": "the sample request body above, actually run through this endpoint — or, when that run is larger than a response header should carry, an object naming its size and the free URL it is published at in full"
                }
              },
              "additionalProperties": false
            }
          }
        }
      },
      "origin_marker": {
        "header": "x-origin-marker"
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x885E7BEF433eb78F5976b28A7c10739c98DB11E5",
        "amount": "4000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "payTo": "6Cg4g7rXQApimMc9wVJGLLZfHsvbwGpGrUpGDgyJ2RaP",
        "amount": "4000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 60
      }
    ],
    "resource": {
      "url": "https://10x402.com/lint/envelope/one",
      "tags": [
        "x402",
        "lint",
        "conformance",
        "developer-tools"
      ],
      "method": "POST",
      "mimeType": "application/json",
      "description": "Run ONE named check against a response you paste",
      "serviceName": "10x402"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": "{\"status\":402,\"headers\":{\"content-type\":\"application/json\"},\"body\":\"{\\\"x402Version\\\":1,\\\"accepts\\\":[{\\\"scheme\\\":\\\"exact\\\",\\\"network\\\":\\\"base\\\",\\\"maxAmountRequired\\\":\\\"1000\\\",\\\"resource\\\":\\\"https://example.com/api/thing\\\",\\\"description\\\":\\\"an example paid endpoint\\\",\\\"mimeType\\\":\\\"application/json\\\",\\\"payTo\\\":\\\"0x0000000000000000000000000000000000000001\\\",\\\"maxTimeoutSeconds\\\":60,\\\"asset\\\":\\\"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\\\",\\\"extra\\\":{\\\"name\\\":\\\"USD Coin\\\",\\\"version\\\":\\\"2\\\"},\\\"outputSchema\\\":{\\\"input\\\":{\\\"type\\\":\\\"http\\\",\\\"method\\\":\\\"POST\\\",\\\"discoverable\\\":true,\\\"bodyType\\\":\\\"text\\\",\\\"description\\\":\\\"the request body\\\"},\\\"output\\\":{\\\"type\\\":\\\"string\\\",\\\"description\\\":\\\"the response body\\\"}}}]}\",\"check\":\"V2_HEADER_PRESENT\"}",
            "type": "http",
            "method": "POST",
            "bodyType": "text"
          },
          "output": {
            "type": "text",
            "format": "application/json",
            "example": "{\"check\":\"V2_HEADER_PRESENT\",\"applied\":true,\"passed\":false,\"finding\":{\"severity\":\"error\",\"code\":\"V2_HEADER_PRESENT\",\"message\":\"no PAYMENT-REQUIRED response header — this endpoint publishes no x402 v2 envelope.\",\"fix\":\"Add a PAYMENT-REQUIRED response header to the 402 carrying the standard-base64 JSON v2 envelope. This costs you DISCOVERY rather than payment, and the distinction is worth being precise about: @x402/core reads the header first but DOES fall back to a v1 body when there is none, so the current client generation can still pay you. What it cannot do is find you — CDP marks the PAYMENT-REQUIRED header a required indexing check, so a v1-only 402 is not catalogued at all, and a strictly-v2 client cannot pay it either. Keep the v1 body exactly as it is; the two versions share a 402 without either noticing the other.\",\"core\":false,\"sources\":[{\"kind\":\"spec\",\"ref\":\"specs/transports-v2/http.md:7-25 § Payment Required Signaling\"},{\"kind\":\"cdp-validator\",\"ref\":\"cdp-validator-toolshed.json preflight[6] payment_required_header (required)\"},{\"kind\":\"client-code\",\"ref\":\"@x402/[email protected] dist/cjs/http/index.js:1620-1628 — the v2 client DOES fall back to a v1 body\"},{\"kind\":\"field-report\",\"ref\":\"x402-foundation/x402#3091 — [email protected] is still a live buyer population\"}]},\"regime\":\"bazaar\",\"severity\":\"error\",\"core\":false,\"sources\":[{\"kind\":\"spec\",\"ref\":\"specs/transports-v2/http.md:7-25 § Payment Required Signaling\"},{\"kind\":\"cdp-validator\",\"ref\":\"cdp-validator-toolshed.json preflight[6] payment_required_header (required)\"},{\"kind\":\"client-code\",\"ref\":\"@x402/[email protected] dist/cjs/http/index.js:1620-1628 — the v2 client DOES fall back to a v1 body\"},{\"kind\":\"field-report\",\"ref\":\"x402-foundation/x402#3091 — [email protected] is still a live buyer population\"}],\"summary\":{\"versions_detected\":[1],\"payTo\":\"0x0000000000000000000000000000000000000001\",\"network\":\"base\",\"price\":\"$0.001 (1000 atomic)\"},\"checks_run\":1}"
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "string",
                  "maxLength": 262144,
                  "description": "a JSON object: { \"status\": 402, \"headers\": { … }, \"body\": \"…\", \"check\": \"V2_B64_URLSAFE\" } — exactly one check id from GET /check, up to 256 KB"
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "type": "string",
                  "const": "POST"
                },
                "bodyType": {
                  "type": "string",
                  "const": "text"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type",
                "format"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "text"
                },
                "format": {
                  "type": "string",
                  "const": "application/json",
                  "description": "a JSON single-check report: check, applied, passed, the finding with its fix (or null), regime, sources and the envelope summary"
                },
                "example": {
                  "type": "string",
                  "description": "the sample request body above, actually run through this endpoint — or, when that run is larger than a response header should carry, an object naming its size and the free URL it is published at in full"
                }
              },
              "additionalProperties": false
            }
          }
        }
      },
      "origin_marker": {
        "header": "x-origin-marker"
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/10x402/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME
09-05 · uptime 100.0% · 310ms avg09-06 · uptime 100.0% · 332ms avg09-07 · uptime 100.0% · 290ms avg09-08 · uptime 100.0% · 254ms avg09-09 · uptime 100.0% · 258ms avg09-10 · uptime 100.0% · 307ms avg09-11 · uptime 100.0% · 271ms avg09-12 · uptime 100.0% · 298ms avg09-13 · uptime 100.0% · 338ms avg09-14 · uptime 100.0% · 314ms avg09-15 · uptime 100.0% · 326ms avg09-16 · uptime 100.0% · 244ms avg09-17 · uptime 100.0% · 279ms avg09-18 · uptime 100.0% · 253ms avg09-19 · uptime 100.0% · 253ms avg09-20 · uptime 100.0% · 238ms avg09-21 · uptime 100.0% · 261ms avg09-22 · uptime 100.0% · 343ms avg09-23 · uptime 100.0% · 296ms avg09-24 · uptime 100.0% · 344ms avg09-25 · uptime 100.0% · 325ms avg09-26 · uptime 100.0% · 295ms avg09-27 · uptime 100.0% · 336ms avg09-28 · uptime 100.0% · 326ms avg09-29 · uptime 100.0% · 379ms avg09-30 · uptime 100.0% · 338ms avg10-01 · uptime 100.0% · 316ms avg10-02 · uptime 100.0% · 381ms avg10-03 · uptime 100.0% · 293ms avg10-04 · uptime 100.0% · 158ms avg09-0510-04
30D UPTIME 100%
RESPONSE TIME
09-05 · 310ms avg09-05 · 310ms avg09-06 · 332ms avg09-06 · 332ms avg09-07 · 290ms avg09-07 · 290ms avg09-08 · 254ms avg09-08 · 254ms avg09-09 · 258ms avg09-09 · 258ms avg09-10 · 307ms avg09-10 · 307ms avg09-11 · 271ms avg09-11 · 271ms avg09-12 · 298ms avg09-12 · 298ms avg09-13 · 338ms avg09-13 · 338ms avg09-14 · 314ms avg09-14 · 314ms avg09-15 · 326ms avg09-15 · 326ms avg09-16 · 244ms avg09-16 · 244ms avg09-17 · 279ms avg09-17 · 279ms avg09-18 · 253ms avg09-18 · 253ms avg09-19 · 253ms avg09-19 · 253ms avg09-20 · 238ms avg09-20 · 238ms avg09-21 · 261ms avg09-21 · 261ms avg09-22 · 343ms avg09-22 · 343ms avg09-23 · 296ms avg09-23 · 296ms avg09-24 · 344ms avg09-24 · 344ms avg09-25 · 325ms avg09-25 · 325ms avg09-26 · 295ms avg09-26 · 295ms avg09-27 · 336ms avg09-27 · 336ms avg09-28 · 326ms avg09-28 · 326ms avg09-29 · 379ms avg09-29 · 379ms avg09-30 · 338ms avg09-30 · 338ms avg10-01 · 316ms avg10-01 · 316ms avg10-02 · 381ms avg10-02 · 381ms avg10-03 · 293ms avg10-03 · 293ms avg10-04 · 158ms avg10-04 · 158ms avg09-0510-04
AVG RESP 302ms
PRICE (captured 402, USD)
09-04 · $0.027509-13 · $0.027509-17 · $0.027509-21 · $0.027510-04 · $0.0275$0.027509-0410-04

Median across 4 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
09-04 uptime: 100.0% compliance: 100% checks09-05 uptime: 100.0% compliance: 100% checks09-06 uptime: 100.0% compliance: 100% checks09-07 uptime: 100.0% compliance: 100% checks09-08 uptime: 100.0% compliance: 100% checks09-09 uptime: 100.0% compliance: 100% checks09-10 uptime: 100.0% compliance: 100% checks09-11 uptime: 100.0% compliance: 100% checks09-12 uptime: 100.0% compliance: 100% checks09-13 uptime: 100.0% compliance: 100% checks09-14 uptime: 100.0% compliance: 100% checks09-15 uptime: 100.0% compliance: 100% checks09-16 uptime: 100.0% compliance: 100% checks09-17 uptime: 100.0% compliance: 100% checks09-18 uptime: 100.0% compliance: 100% checks09-19 uptime: 100.0% compliance: 100% checks09-20 uptime: 100.0% compliance: 100% checks09-21 uptime: 100.0% compliance: 100% checks09-22 uptime: 100.0% compliance: 100% checks09-23 uptime: 100.0% compliance: 100% checks09-24 uptime: 100.0% compliance: 100% checks09-25 uptime: 100.0% compliance: 100% checks09-26 uptime: 100.0% compliance: 100% checks09-27 uptime: 100.0% compliance: 100% checks09-28 uptime: 100.0% compliance: 100% checks09-29 uptime: 100.0% compliance: 100% checks09-30 uptime: 100.0% compliance: 100% checks10-01 uptime: 100.0% compliance: 100% checks10-02 uptime: 100.0% compliance: 100% checks10-03 uptime: 100.0% compliance: 100% checks10-04 uptime: 100.0% compliance: 100% checksuptimecompliance09-0410-04

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)
price percentile in Verification
site signals present (of 6)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)
building volume history (1 day so far)
DISTINCT BUYERS
building buyer history (1 day so far)

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-09-23 · last up 2026-10-04

  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

SITE PILLARS

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
recent checks (18) live · click to expand
TIME STATUS RESP CAUSE
● OK 141ms
● OK 138ms
● OK 109ms
● OK 176ms
● OK 128ms
● OK 123ms
● OK 127ms
● OK 166ms
● OK 101ms
● OK 121ms
● OK 175ms
● OK 128ms
● OK 139ms
● OK 115ms
● OK 125ms
● OK 106ms
● OK 111ms
● OK 153ms
18 of 2,741 checks · live count

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