A pay-per-call API built for AI agents and scripts. No account and no API key: call an endpoint, get HTTP 402 with x402 payment requirements (v1 + v2), pay in USDC on Base, get JSON. Settled via keyless public facilitators.
| Endpoint | Price | What |
|---|---|---|
GET /api/apis/search | $0.01 | Search 2,230 link-checked public & free-tier APIs (59 categories). Filters: q, category, auth=none, alive=yes, https=yes, kind, limit<=50. |
GET /api/free-tiers | $0.01 | Current free-tier limits for developer services (hosting, DB, auth, email, CI, monitoring) and AI/LLM APIs, with official source URLs. Filter: q, category. |
GET /api/robots-check | $0.01 | Check whether a URL may be crawled per the site's robots.txt for a given user-agent. Returns allowed, matched rule, crawl-delay, sitemaps. |
GET /api/page-meta | $0.02 | Fetch a public web page (robots.txt respected) and return title, meta description, canonical, Open Graph/Twitter tags, language, headings, link counts, HTTP status. |
GET /api/dataset/full | $8 | Buy the full Verified API Directory dataset (2,230 rows, JSON, CC BY 4.0 + MIT sources) in one call. |
GET /api/llm-pricing | $0.02 | AI model list prices (USD per 1M input/output/cached tokens, context window, vision/tools/reasoning flags) for ~3,000 models across OpenAI, Anthropic, Google, Mistral, Groq, Bedrock, Azure, Together, Fireworks and more, plus verified free tiers/rate limits of AI APIs. Filters: q, provider, free=yes, max_input_per_m, min_context, vision=yes, tools=yes, sort=input|output|context, limit<=100. |
GET /api/llm-cost | $0.01 | Token & cost calculator: estimate tokens for a text (or pass input_tokens/output_tokens) and price it across several models using provider list prices (LiteLLM price table, MIT). Params: models (comma list of model ids like gpt-4o-mini, claude-sonnet-4-5, gemini/gemini-2.5-flash or search words, max 15), text or input_tokens, output_tokens, calls. |
GET /api/mcp-servers | $0.02 | Search 4,259 MCP (Model Context Protocol) servers by keyword, category, language (python/typescript/go/rust...), scope (cloud/local) and official flag. Returns repo URL and description. |
GET /api/page-check | $0.03 | One-call page audit for agents: HTTP status, redirects, latency, title, meta description, canonical, lang, Open Graph, JSON-LD types, headings, word count, plus agent-friendliness: robots.txt rules for 14 AI crawlers, llms.txt, sitemap, and a 0-100 score with reasons. |
GET /api/link-check | $0.05 | Check up to 20 URLs in one call: HTTP status, final URL after redirects, redirect count, latency, content-type, ok flag. |
GET /api/country | $0.01 | Country reference lookup by ISO2/ISO3/name: capital, population, area, continent, currency, phone prefix, TLD, languages, neighbours, time zones with current UTC offset and local time. |
GET /api/holidays | $0.01 | Public holidays for ~490 countries/territories for 2026 and 2027; optional date=YYYY-MM-DD answers is_holiday. |
GET /api/currency | $0.01 | Currency conversion with official ECB euro reference rates (~30 currencies, daily). Params: from, to, amount. Also returns the rate date. |
GET /api/base-gas | $0.01 | Live Base mainnet gas price (gwei), latest block, and estimated ETH cost of a USDC transfer (~65k gas) and a plain ETH transfer (21k gas). |
GET /api/page-markdown | $0.03 | Convert a public web page to clean Markdown (title, headings, paragraphs, lists, links, code), scripts/nav/footer removed, max ~60k chars. robots.txt respected. |
GET /api/dump/mcp-servers | $9 | Full MCP server directory dump (4,259 servers, JSON). Source awesome-mcp-servers (MIT). |
GET /api/dump/llm-pricing | $5 | Full dump: list prices of ~3,000 AI models (LiteLLM table, MIT) + verified AI/dev free tiers with limits (JSON). |
GET /api/dump/world-reference | $6 | Full dump: 252 countries (GeoNames, CC BY 4.0), 418 time zones, ~14,000 public holidays 2026-2027 (python-holidays, MIT). JSON. |
GET /api/apis/sample, GET /api/mcp-servers/sample, GET /api/llm-pricing/sample — free sample rowsGET /openapi.json, GET /.well-known/x402 — machine-readable catalogGET /healthcurl -i "https://freetier-agent-api.pages.dev/api/apis/search?q=weather&auth=none&alive=yes" # -> 402 + PAYMENT-REQUIRED header # pay with any x402 client, e.g. @x402/fetch or x402 Python (httpx)
Humans: buy the full dataset as a download at FreeTier Kits. Data is compiled with AI-assisted scripts and automated link checks; no personal data. Contact: tec@mail.grokbot.com