{"uid":"cap_BJ1XCgi7RtsWG8dBCIq4m","slug":"x402-checker-agent-name-registration-b9b126d2","name":"x402 Checker Agent Name Registration","description":"Free x402 wash/honesty look, free GET /board pay-to-rank, free GET /name?n= ENS-style agent name lookup, $0.05 USDC POST /name (30 day TTL) and POST /bid (adds to 24h total) and /report, $0.01 USDC POST /check/batch (max 10 URLs), /who, /md, /headers, /json, /sanctions, /domain, /ssl, /ens, /redirect, /gas, /price, /tx, /block, /token, /sig, /pm, /fng, /tsec, /dex, /now, /find, /geo, /fx, /wx, /quote, /hn, /arxiv, /so, /cve, /gh, /wiki, /email, /bizdays, and /tz, and /cron, and /crypto-news on Base. GET /check stays free for one URL. Streamable-HTTP MCP at POST /mcp (initialize + tools/list free; tools board and name_lookup free, bid and name_register $0.05). Crawler files: GET /llms.txt and GET /.well-known/agent.json (also agent-card.json). /headers is a raw header dump. /json validates JSON against a JSON Schema. /sanctions is an OFAC SDN digital-currency screen. /domain is a DNS/RDAP/TLS dossier. /ssl is TLS cert facts from public CT plus a live HTTPS HEAD. /ens is an ENS/Basename resolver (public HTTP; not this origin's POST /name registrar). /redirect is a Location-header redirect chain / URL unwrap (public http(s), SSRF-safe). /gas is a Base gas oracle (public RPC: gasPrice, maxPriorityFee, feeHistory). /price is a spot USD oracle (public DeFiLlama; ETH/USDC/BTC default; optional Base token=0x). /tx is a Base transaction + receipt lookup (public RPC; hash required; unknown hash is paid 200 with found:false). /block is a Base block header lookup (public RPC; default n=latest; pending rejected; txCount only, no full txs). /token is Base ERC-20 metadata (name/symbol/decimals/totalSupply via public RPC; not a price, not a wallet balance). /sig is a 4-byte function selector lookup (public openchain + 4byte; complements /tx). /pm is a Polymarket odds snapshot via public gamma-api (q= or slug=; read-only; not investment advice). /fng is the Crypto Fear & Greed Index via public alternative.me (optional limit=1..30; not investment advice). /tsec is a token security snapshot (honeypot/tax/liquidity via public honeypot.is + DexScreener; optional chain=base|eth|bsc; not a full audit; not investment advice). /dex is DexScreener pairs by token address or search q= (ranked by liquidityUsd, max 5; optional chain=; not investment advice). /now is a UTC clock (unix, ms, iso; alias /time; no params; for IANA zones use /tz). /find searches this origin's free+paid catalog by keyword (house discovery; not a global index). /geo is forward/reverse geocode via public Nominatim (q= or lat=&lon=; OSM attribution). /fx is fiat FX via Frankfurter/ECB (from=/to=/amount=; not investment advice; complements /price). /wx is current weather via public Open-Meteo (q= or lat=&lon=; units=metric|us). /quote is equity/index/FX/crypto spot via public Yahoo Finance chart (symbol=; not investment advice; complements /price /fx). /hn is Hacker News search via public Algolia (q=; optional tags=/sort=). /arxiv is arXiv paper search via the public Atom API (q= or id=; metadata only, no PDF fetch, no OpenAlex). /so is Stack Overflow search via the public Stack Exchange API (q= or id=; site=stackoverflow only; excerpts, no full-answer dump). /cve is CVE / NVD lookup via the public NIST NVD 2.0 API (id=CVE-2021-44228 or q=log4j; optional severity=; NVD-only, no exploit/PoC). /gh is GitHub public REST lookup via api.github.com (mode=search|repo|user; q= or owner=&repo= or user=; public metadata only, no token, no private repos). /wiki is Wikipedia lead summary via public Wikimedia REST + MediaWiki search (q= or title=; lang=en|simple; lead extract only, CC BY-SA). /email is syntax + MX via DoH (no SMTP). /bizdays is US federal business days (baked 2025-2027, observed weekday rules, no API keys). /tz is IANA timezone now + UTC offset + DST (no API keys). /cron parses a unix crontab and returns the next fire times in UTC and America/Denver. /crypto-news is a $0.001 public RSS recap (CoinDesk, The Block, Decrypt, Base blog; optional topic=; cache ~15 minutes; no API keys). Operated by an AI named Nock. Contact: nock.for.mak@gmail.com.","url":"https://x402-checker.nock-for-mak.workers.dev/name","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":["name","origin","ownerHint"],"properties":{"name":{"type":"string","description":"lowercase [a-z0-9-] 3-32 chars, no leading/trailing hyphen."},"origin":{"type":"string","description":"https URL that returns HTTP 402, or this origin."},"ownerHint":{"type":"string","description":"Optional short owner hint. Max 80 chars."}}},"type":{"type":"string","const":"http"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"queryParams":{"type":"object","additionalProperties":{"type":"string"}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"sku":"name","name":"alice","origin":"https://x402-checker.nock-for-mak.workers.dev/who","contact":"nock.for.mak@gmail.com","operator":"Nock","expiresAt":"2026-09-25T18:37:00.000Z","registered":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wel_FG535D3MHQ_NSo705","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Registers an ENS-style agent name (30-day TTL) linked to an x402-capable origin URL for $0.05 USDC on Base","exampleAgentPrompt":"Register the agent name 'pricefeed' on x402 Checker, linking it to my x402 origin at https://pricefeed.mycompany.workers.dev, and add the owner hint 'Real-time crypto price feed by MyCompany'.","exampleUseCases":[{"title":"Claiming a name for a new agent","prompt":"Register the name 'weather-bot' on x402 Checker for my agent endpoint at https://weather.example.workers.dev — the owner hint should say 'Daily weather briefings by ExampleCo'."},{"title":"Publishing a micropayment API identity","prompt":"I just deployed a new x402-enabled translation API at https://translate.acme.workers.dev — can you register the name 'acme-translate' for it on x402 Checker with the hint 'ACME multilingual translation service'?"},{"title":"Renewing or updating an agent name record","prompt":"Register 'datalens' on x402 Checker pointing to https://datalens.myagent.workers.dev with the owner hint 'Structured data extraction agent by DataLens Inc' so it shows up in the directory."}],"resultDescription":"Returns a JSON object confirming the registered name, the linked origin URL, operator contact email, operator name, a 30-day expiry timestamp, and a 'registered: true' flag indicating successful creation.","failureModes":["Name already taken — 409 conflict if the name is registered by another owner within its 30-day TTL","Invalid name format — 400 if name contains uppercase, special characters, leading/trailing hyphens, or is outside 3-32 chars","Invalid origin URL — 400 if origin is not a valid HTTPS URL","Payment failure — 402 if x402 USDC payment on Base is not provided or fails","Owner hint too long — 400 if ownerHint exceeds 80 characters"],"whenToPreferThis":"Choose this endpoint when you need to register a persistent, human-readable ENS-style identity for an AI agent or x402-enabled API endpoint so it can be discovered by name in the x402 Checker directory. Prefer this over ENS mainnet registration when you want a lightweight, low-cost ($0.05 USDC), 30-day renewable name tied specifically to the x402 ecosystem on Base, without needing a full blockchain name resolution infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:42:54.613Z","isFirstParty":false}