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x402 Checker – Hacker News Search (/hn)
x402
x402 Checker – Hacker News Search (/hn) is a paid API for AI agents from x402-checker.nock-for-mak.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Searches Hacker News stories, comments, jobs, and polls via Algolia and returns ranked results for a given query
Price / call$0.01
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 containing the search query, SKU identifier, an array of up to 8 hits each with title, canonical URL, HN item URL, author, points, comment count, objectID, and creation timestamp, plus metadata including sort order, tags filter, total hit count, found flag, and data source attribution.
Example use cases
Tracking startup buzz on HN
“Find the top 8 Hacker News stories about 'Cloudflare Workers' sorted by relevance — stories only, not comments.”
Latest AI news from HN community
“Search Hacker News for the most recent stories mentioning 'GPT-5', sorted by date, and give me 5 results.”
Finding Ask HN community discussions
“Search Hacker News for Ask HN posts about 'remote work burnout', sorted by relevance, and return up to 6 results.”
Technical details
Endpoint
GEThttps://x402-checker.nock-for-mak.workers.dev/hnWhen to prefer
Use this endpoint when you need to search Hacker News programmatically without managing your own Algolia API integration, and when you want a pay-per-call model with no API key setup. It's ideal for agents that occasionally need HN search as part of a broader workflow, especially on Base network where x402 micropayments are native. Prefer it over direct Algolia HN search when you want a unified multi-tool API that also handles payments transparently.
Side effects
- No results found for obscure or misspelled queries (found: false, nbHits: 0)
- Query parameter missing — API may return error or empty results
- hits value out of range 1-8 — may be clamped or rejected
- Payment failure if x402 micropayment of $0.01 USDC is not completed
- Rate limiting or Cloudflare Worker timeout for high-frequency calls
- Algolia upstream downtime causing proxy failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"q": "x402",
"sku": "hn",
"hits": [
{
"url": "https://www.x402.org/",
"type": "story",
"hnUrl": "https://news.ycombinator.com/item?id=45123456",
"title": "x402 — An open protocol for internet-native payments",
"author": "alice",
"points": 228,
"comments": 91,
"objectID": "45123456",
"createdAt": "2026-08-28T17:25:48.000Z"
}
],
"sort": "relevance",
"tags": "story",
"found": true,
"nbHits": 2,
"source": "HN Search (Algolia, public, keyless)",
"contact": "nock.for.mak@gmail.com",
"operator": "Nock"
}
}Tags
x402
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