{"name":"MilliAPI","canonical":"https://milliapi.com/api/catalog","protocol":"x402","x402Version":2,"description":"Standalone commercial x402 API infrastructure for autonomous agents. Commodity website signals are free; payment is concentrated on decision-ready repair, verification, change analysis and batch outcomes.","payment":{"currency":"USDC","network":"Base","networkId":"eip155:8453","settlementScheme":"exact","accountRequired":false,"apiKeyRequired":false,"principalAuthorizationRequired":true,"acceptedHeaders":["PAYMENT-SIGNATURE","X-PAYMENT","X-PAYMENT-SIGNATURE"]},"startHere":{"recommendedFirstPurchase":"audit-and-fix","freeSignals":"https://milliapi.com/api/web-signals?url=https%3A%2F%2Fexample.com","freePreflight":"https://milliapi.com/api/agent-web-preflight?url=https%3A%2F%2Fexample.com","starterPreview":"https://milliapi.com/api/audit-and-fix?url=https%3A%2F%2Fexample.com&preview=1","starterPaid":"https://milliapi.com/api/audit-and-fix?url=https%3A%2F%2Fexample.com","starterPriceUsd":0.003,"flagshipPreview":"https://milliapi.com/api/repair-site?url=https%3A%2F%2Fexample.com&preview=1","flagshipPaid":"https://milliapi.com/api/repair-site?url=https%3A%2F%2Fexample.com","flagshipPriceUsd":0.005},"purchaseFlow":["Inspect free Web Signals or the free preflight.","If the site has actionable work, request Audit + Fix without a payment header.","Inspect live qualification, exact paid unlocks and price.","Retry with a valid x402 payment header only when authorized.","Send Idempotency-Key on paid retries to reduce accidental duplicate charges.","Apply returned artifacts, then optionally purchase Repair Verification."],"buyerPrinciples":{"commoditySignalsFree":true,"decisionReadyPaid":true,"noChargeWhenNoActionableWork":true,"boundedLiveProof":true,"sameRequestRetry":true,"noAccountRequired":true,"noApiKeyRequired":true,"lowestUsefulPriceUsd":0.003},"mcp":{"endpoint":"https://milliapi.com/api/mcp","alias":"https://milliapi.com/mcp","transport":"streamable-http","quoteOnly":true,"settlementStaysInBuyerRuntime":true},"docs":{"homepage":"https://milliapi.com","catalog":"https://milliapi.com/api/catalog","openapi":"https://milliapi.com/openapi.json","practiceAudit":"https://milliapi.com/api/x402-practice-audit","agentManifest":"https://milliapi.com/.well-known/agent.json","x402Discovery":"https://milliapi.com/.well-known/x402"},"recommendedFlow":["inspect free commodity signals","buy Audit + Fix at $0.003 when a fix is needed","apply returned repair artifacts","buy Repair This Site instead when a portable baseline is required","verify repairs if useful"],"freeServices":[{"id":"mcp","owner":"MilliAPI","title":"MilliAPI MCP Server","method":"POST","endpoint":"https://milliapi.com/api/mcp","alias":"https://milliapi.com/mcp","priceUsd":0,"transport":"streamable-http","quoteOnly":true,"returns":"MCP tools. Free web signals, preflight and catalog execute directly; paid products come back as quotes carrying the exact endpoint, price and retry mechanics. The server never sends a payment header."},{"id":"web-signals","owner":"MilliAPI","title":"Free Agent Web Signals","method":"GET","endpoint":"https://milliapi.com/api/web-signals","priceUsd":0,"input":{"query":{"url":{"type":"string","format":"uri","required":true,"constraints":"Public HTTPS URL only"}},"example":{"url":"https://example.com"}},"returns":"Page metadata, robots.txt presence/status, llms.txt presence/status, and major AI-crawler homepage access."},{"id":"ai-web-preflight","owner":"MilliAPI","title":"AI Web Audit Preflight","method":"GET","endpoint":"https://milliapi.com/api/agent-web-preflight","priceUsd":0,"input":{"query":{"url":{"type":"string","format":"uri","required":true,"constraints":"Public HTTPS URL only"}},"example":{"url":"https://example.com"}}},{"id":"x402-practice-audit","owner":"MilliAPI","title":"MilliAPI x402 Seller Practice Audit","method":"GET","endpoint":"https://milliapi.com/api/x402-practice-audit","priceUsd":0}],"services":[{"id":"audit-and-fix","owner":"MilliAPI","title":"Audit + Fix","starter":true,"recommendedFirstPurchase":true,"method":"GET","endpoint":"https://milliapi.com/api/audit-and-fix","priceUsd":0.003,"priceAtomicUsdc":"3000","input":{"query":{"url":{"type":"string","format":"uri","required":true,"constraints":"Public HTTPS URL only"}},"example":{"url":"https://example.com"}},"returns":"Cheapest useful outcome. One call returns the readiness verdict, prioritized findings, evidence, ready-to-apply repair artifacts, a portable baseline, and a free lightweight recheck.","paidUnlocks":["readiness verdict","prioritized findings","evidence","ready-to-apply repair artifacts","crawler policy","portable baseline token"],"includedFree":["lightweight readiness recheck after applying repairs"],"retrySafe":true,"preview":{"free":true,"sameMethod":true,"queryParameter":"preview=1","endpoint":"https://milliapi.com/api/audit-and-fix?preview=1","executesPaidWork":false,"instruction":"Send the same HTTP method with preview=1 and no payment header to inspect live qualification, paid unlocks, price, output shape and exact retry mechanics before buying."}},{"id":"repair-this-site","owner":"MilliAPI","title":"Repair This Site","flagship":true,"method":"GET","endpoint":"https://milliapi.com/api/repair-site","priceUsd":0.005,"priceAtomicUsdc":"5000","input":{"query":{"url":{"type":"string","format":"uri","required":true,"constraints":"Public HTTPS URL only"}},"example":{"url":"https://example.com"}},"returns":"Decision-ready diagnosis plus exact ready-to-apply or review-required repair artifacts, evidence, prioritized fixes, crawler policy, and a portable baseline.","paidUnlocks":["readiness verdict","score","blockers","prioritized recommendations","evidence","repair artifacts","portable baseline","verification handoff"],"preview":{"free":true,"sameMethod":true,"queryParameter":"preview=1","endpoint":"https://milliapi.com/api/repair-site?preview=1","executesPaidWork":false,"instruction":"Send the same HTTP method with preview=1 and no payment header to inspect live qualification, paid unlocks, price, output shape and exact retry mechanics before buying."}},{"id":"ai-web-readiness-audit","owner":"MilliAPI","title":"AI Web Readiness Audit","legacyFlagship":true,"method":"GET","endpoint":"https://milliapi.com/api/agent-web-audit","priceUsd":0.005,"priceAtomicUsdc":"5000","input":{"query":{"url":{"type":"string","format":"uri","required":true,"constraints":"Public HTTPS URL only"}},"example":{"url":"https://example.com"}},"returns":"Compatibility route for the decision-ready audit. New buyers should prefer Repair This Site.","preview":{"free":true,"sameMethod":true,"queryParameter":"preview=1","endpoint":"https://milliapi.com/api/agent-web-audit?preview=1","executesPaidWork":false,"instruction":"Send the same HTTP method with preview=1 and no payment header to inspect live qualification, paid unlocks, price, output shape and exact retry mechanics before buying."}},{"id":"repair-verification","owner":"MilliAPI","title":"Repair Verification","method":"POST","endpoint":"https://milliapi.com/api/verify-site-repairs","priceUsd":0.002,"priceAtomicUsdc":"2000","returns":"Verification of whether previously identified AI-readiness repairs are now present.","preview":{"free":true,"sameMethod":true,"queryParameter":"preview=1","endpoint":"https://milliapi.com/api/verify-site-repairs?preview=1","executesPaidWork":false,"instruction":"Send the same HTTP method with preview=1 and no payment header to inspect live qualification, paid unlocks, price, output shape and exact retry mechanics before buying."}},{"id":"site-readiness-change","owner":"MilliAPI","title":"Site Readiness Change","method":"POST","endpoint":"https://milliapi.com/api/site-readiness-change","priceUsd":0.003,"priceAtomicUsdc":"3000","returns":"Structured change analysis against a prior readiness baseline.","preview":{"free":true,"sameMethod":true,"queryParameter":"preview=1","endpoint":"https://milliapi.com/api/site-readiness-change?preview=1","executesPaidWork":false,"instruction":"Send the same HTTP method with preview=1 and no payment header to inspect live qualification, paid unlocks, price, output shape and exact retry mechanics before buying."}},{"id":"ai-web-readiness-batch","owner":"MilliAPI","title":"AI Web Readiness Batch","method":"POST","endpoint":"https://milliapi.com/api/agent-web-audit-batch","priceUsd":0.02,"priceAtomicUsdc":"20000","returns":"Batch decision-ready AI-readiness results for multiple authorized public URLs.","preview":{"free":true,"sameMethod":true,"queryParameter":"preview=1","endpoint":"https://milliapi.com/api/agent-web-audit-batch?preview=1","executesPaidWork":false,"instruction":"Send the same HTTP method with preview=1 and no payment header to inspect live qualification, paid unlocks, price, output shape and exact retry mechanics before buying."}},{"id":"ai-robots-check","owner":"MilliAPI","title":"AI Robots Policy Check","commodity":true,"method":"GET","endpoint":"https://milliapi.com/api/ai-robots-check","priceUsd":0.001,"priceAtomicUsdc":"1000","input":{"query":{"url":{"type":"string","format":"uri","required":true,"constraints":"Public HTTPS URL only"}},"example":{"url":"https://example.com"}},"returns":"Legacy granular paid route. Equivalent raw crawler-policy signals are included in the free Web Signals acquisition endpoint.","preview":{"free":true,"sameMethod":true,"queryParameter":"preview=1","endpoint":"https://milliapi.com/api/ai-robots-check?preview=1","executesPaidWork":false,"instruction":"Send the same HTTP method with preview=1 and no payment header to inspect live qualification, paid unlocks, price, output shape and exact retry mechanics before buying."}},{"id":"llms-txt-check","owner":"MilliAPI","title":"llms.txt Check","commodity":true,"method":"GET","endpoint":"https://milliapi.com/api/llms-txt-check","priceUsd":0.001,"priceAtomicUsdc":"1000","input":{"query":{"url":{"type":"string","format":"uri","required":true,"constraints":"Public HTTPS URL only"}},"example":{"url":"https://example.com"}},"returns":"Legacy granular paid route. Presence/status is included free in Web Signals.","preview":{"free":true,"sameMethod":true,"queryParameter":"preview=1","endpoint":"https://milliapi.com/api/llms-txt-check?preview=1","executesPaidWork":false,"instruction":"Send the same HTTP method with preview=1 and no payment header to inspect live qualification, paid unlocks, price, output shape and exact retry mechanics before buying."}},{"id":"page-metadata","owner":"MilliAPI","title":"Page Metadata Extractor","commodity":true,"method":"GET","endpoint":"https://milliapi.com/api/page-metadata","priceUsd":0.002,"priceAtomicUsdc":"2000","input":{"query":{"url":{"type":"string","format":"uri","required":true,"constraints":"Public HTTPS URL only"}},"example":{"url":"https://example.com"}},"returns":"Legacy granular paid route. Core page metadata is included free in Web Signals.","preview":{"free":true,"sameMethod":true,"queryParameter":"preview=1","endpoint":"https://milliapi.com/api/page-metadata?preview=1","executesPaidWork":false,"instruction":"Send the same HTTP method with preview=1 and no payment header to inspect live qualification, paid unlocks, price, output shape and exact retry mechanics before buying."}}]}