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x402 Checker Agent Name Registration
x402
x402 Checker Agent Name Registration is a paid API for AI agents from x402-checker.nock-for-mak.workers.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).
Registers an ENS-style agent name (30-day TTL) linked to an x402-capable origin URL for $0.05 USDC on Base
Price / call$0.05
Success—
StatusUnknown
How this service works
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.
Output
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.
Example use cases
Claiming a name for a new agent
“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'.”
Publishing a micropayment API identity
“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'?”
Renewing or updating an agent name record
“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.”
Technical details
Endpoint
POSThttps://x402-checker.nock-for-mak.workers.dev/nameWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"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
}
}Tags
x402
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