{"name":"x402fix","description":"x402 endpoint doctor for sellers: give it your paid URL and get a grade plus paste-ready fixes. Probes unpaid (never pays): 402 on GET / HEAD / empty POST, CORS for browser buyers, the v2 PAYMENT-REQUIRED header and v1 body, every accepts entry (USDC asset, EIP-712 domain, Solana feePayer, atomic amounts, payTo), multichain consistency, the Bazaar declaration validated against its own schema, the CDP facilitator's validate verdict and index status, discovery docs and payee checks. Generates a corrected extensions.bazaar block and multichain accepts.","paid":[{"tier":"lite","methods":["GET","POST"],"path":"/v1/lite","params":["url","method","framework"],"price":"$0.005","returns":"Grade, score, status, fix list and every check (transport, v2, v1, accepts, multichain, Bazaar).","network":"eip155:8453","asset":"USDC","payTo":"0x3c1A1E01e790Cd326495631B3b38Bd7068F08d6F","facilitator":"https://api.cdp.coinbase.com/platform/v2/x402","x402":["v2","v1"]},{"tier":"check","methods":["GET","POST"],"path":"/v1/check","params":["url","method","framework"],"price":"$0.02","returns":"Lite + CDP validate verdict and index status, discovery docs, payee checks, generated bazaar block, accepts and snippet.","network":"eip155:8453","asset":"USDC","payTo":"0x3c1A1E01e790Cd326495631B3b38Bd7068F08d6F","facilitator":"https://api.cdp.coinbase.com/platform/v2/x402","x402":["v2","v1"]},{"tier":"site","methods":["GET","POST"],"path":"/v1/site","params":["url","method","framework"],"price":"$0.05","returns":"Per-route grades and top fixes for up to 8 paid routes of one origin, plus discovery-doc drift.","network":"eip155:8453","asset":"USDC","payTo":"0x3c1A1E01e790Cd326495631B3b38Bd7068F08d6F","facilitator":"https://api.cdp.coinbase.com/platform/v2/x402","x402":["v2","v1"]}],"payTo":"0x3c1A1E01e790Cd326495631B3b38Bd7068F08d6F","free":["/health","/v1/preview","/mcp","/v1/stats","/openapi.json","/.well-known/x402"],"freeTier":{"preview":{"method":"GET","path":"/v1/preview","limit":"10 requests/min per IP","returns":"grade, score, status, counts and detected x402 versions / networks; no fixes"},"mcp":{"method":"POST","path":"/mcp","transport":"streamable-http","tools":["check_x402_endpoint"],"limit":"10 tool calls/min per IP (preview tier)"}},"engine":"x402fix-engine/0.1.2","policy":{"probes":"unpaid only: GET, HEAD, POST (empty and {}), OPTIONS; no payment header is ever sent; public hosts only (no private or link-local addresses)","data":"the target endpoint, its /openapi.json and /.well-known/x402, the CDP facilitator validate endpoint (public, unauthenticated), public RPCs (read-only) and CounterpartyCheck","storage":"results cached in memory for up to 60 seconds; nothing is logged per URL","charging":"only HTTP 200 results are settled; invalid input and internal failures are free"},"limits":["Unpaid probes only: what happens after a payment (verify, settle, the paid response) is not tested.","One request per method from Cloudflare egress; endpoints that block datacenter IPs or rate-limit may look broken.","Bazaar schema validation implements the JSON Schema subset used by x402 declarations (no formats, no remote refs).","Payee checks use public RPCs and CounterpartyCheck lists; a failed lookup is reported in missing_data, never as a pass."],"disclaimer":"Automated, unpaid probe of a public x402 endpoint: no payment is made and no payment header is sent. Fixes are suggestions to check against the x402 spec and your facilitator docs; a passing grade does not guarantee listing or settlement.","source":"https://agentgate-source.pages.dev/x402-x402fix/","allTools":"https://youraitools.co/built-by-us","npm":"https://www.npmjs.com/package/@agentgate-builder/x402fix","endpoint":"https://api.youraitools.co/x402fix","networks":[{"network":"eip155:8453","name":"Base","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","symbol":"USDC","payTo":"0x3c1A1E01e790Cd326495631B3b38Bd7068F08d6F"},{"network":"eip155:137","name":"Polygon","asset":"0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359","symbol":"USDC","payTo":"0x3c1A1E01e790Cd326495631B3b38Bd7068F08d6F"},{"network":"eip155:42161","name":"Arbitrum One","asset":"0xaf88d065e77c8cC2239327C5EDb3A432268e5831","symbol":"USDC","payTo":"0x3c1A1E01e790Cd326495631B3b38Bd7068F08d6F"},{"network":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","name":"Solana","asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","symbol":"USDC","payTo":"FH73WbbUe2UyNzfy72MJs5nT3NxyDf9GrqE7kzjL2Jte"}]}