# Services from freetier-agent-api.pages.dev on Zero

> freetier-agent-api.pages.dev serves 24 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/freetier-agent-api.pages.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/freetier-agent-api.pages.dev/health.json

## Services

- [FreeTier Agent API — Page to Markdown Converter](https://www.zero.xyz/c/freetier-agent-api-page-to-markdown-converter-0aa67e9b/llms.txt): $0.001/call via x402. Fetches a web page by URL and returns its content converted to clean Markdown format, including title and structured text.
- [FreeTier Agent API — Currency Exchange Rate Lookup](https://www.zero.xyz/c/freetier-agent-api-currency-exchange-rate-lookup-2b96772a/llms.txt): $0.001/call via x402. Converts a currency amount from one currency to another and returns the exchange rate and converted result.
- [FreeTier Agent API — Page Metadata Extractor](https://www.zero.xyz/c/freetier-agent-api-page-metadata-extractor-67544618/llms.txt): $0.001/call via x402. Fetches and returns structured metadata (title, description, Open Graph tags, H1s, link counts, canonical URL, language, HTTP status) for any given webpage URL
- [FreeTier Agent API — LLM Pricing Lookup](https://www.zero.xyz/c/freetier-agent-api-llm-pricing-lookup-85472d48/llms.txt): $0.001/call via x402. Returns AI model pricing data (input/output cost per million tokens, context window size) with optional filtering by provider, free tier, vision, tools support, and more
- [FreeTier Agent API — Page Check](https://www.zero.xyz/c/freetier-agent-api-page-check-d911ecdd/llms.txt): $0.001/call via x402. Checks a web page URL and returns its HTTP status, title, and AI-agent friendliness signals including bot permissions and llms.txt presence
- [FreeTier Agent API — AI Model Cost Calculator](https://www.zero.xyz/c/freetier-agent-api-ai-model-cost-calculator-7972cdcc/llms.txt): $0.001/call via x402. Calculates the estimated USD cost of running AI model inference for a given number of calls, input tokens, and output tokens across specified models
- [FreeTier Agent API — Robots.txt Crawl Permission Checker](https://www.zero.xyz/c/freetier-agent-api-robots-txt-crawl-permission-checker-5f1b597d/llms.txt): $0.001/call via x402. Checks whether a given URL is allowed or disallowed for crawling according to the site's robots.txt rules, returning crawl policy, matched rule, sitemap locations, and crawl delay.
- [FreeTier Agent API — Email Domain Verification](https://www.zero.xyz/c/freetier-agent-api-email-domain-verification-a28948d0/llms.txt): $0.001/call via x402. Checks an email address for syntax validity, MX records, disposable domain status, free-mail provider status, and overall deliverability risk
- [FreeTier Agent API — Link Checker](https://www.zero.xyz/c/freetier-agent-api-link-checker-c73a06c1/llms.txt): $0.001/call via x402. Checks one or more URLs for liveness, returning HTTP status codes and response times to identify broken links
- [FreeTier Agent API — MCP Server Directory Search](https://www.zero.xyz/c/freetier-agent-api-mcp-server-directory-search-15b9cd3f/llms.txt): $0.001/call via x402. Search and filter a directory of 4,259 MCP servers by query, category, scope, language, or official status
- [FreeTier Agent API — Text-to-JSON Extraction](https://www.zero.xyz/c/freetier-agent-api-text-to-json-extraction-6c370553/llms.txt): $0.001/call via x402. Extracts structured JSON data from unstructured text using a caller-supplied JSON Schema, returning typed fields with sourcing metadata.
- [FreeTier Agent API — Free Tier Lookup](https://www.zero.xyz/c/freetier-agent-api-free-tier-lookup-516df307/llms.txt): $0.001/call via x402. Search and retrieve free tier details for APIs, AI models, and developer tools by category or keyword
- [FreeTier Agent API — Country Lookup](https://www.zero.xyz/c/freetier-agent-api-country-lookup-1a372343/llms.txt): $0.001/call via x402. Returns country details (capital, timezones, local time, UTC offset, currency code) for a given country name or ISO code
- [FreeTier Agent API — Public Holidays Lookup](https://www.zero.xyz/c/freetier-agent-api-public-holidays-lookup-e6f8828f/llms.txt): $0.001/call via x402. Returns the list of public holidays for a given country and year (2026 or 2027) by ISO2 country code.
- [FreeTier Agent API — Verified APIs Search](https://www.zero.xyz/c/freetier-agent-api-verified-apis-search-913ee119/llms.txt): $0.001/call via x402. Search a curated database of 2,230+ verified public APIs by keyword, category, auth type, liveness, and HTTPS support
- [FreeTier Agent API — MCP Server & API Directory Search](https://www.zero.xyz/c/freetier-agent-api-mcp-server-api-directory-search-1cddbc9f/llms.txt): $0.001/call via x402. Search a directory of 4,259 MCP servers and 2,230 verified APIs with pay-per-call pricing via x402/USDC on Base
- [FreeTier Agent API — Base Gas Price](https://www.zero.xyz/c/freetier-agent-api-base-gas-price-e5d29ba7/llms.txt): $0.001/call via x402. Returns the current Base network gas price in gwei and the estimated ETH cost of a USDC transfer, along with the latest block number.
- [FreeTier Agent API — x402 Services Directory](https://www.zero.xyz/c/freetier-agent-api-x402-services-directory-0cac1fd8/llms.txt): $0.001/call via x402. Search and discover x402 pay-per-call APIs available for AI agents, filterable by query, chain, category, price, and verification status
- [FreeTier Agent API — LLM Pricing & Free Tier Lookup](https://www.zero.xyz/c/freetier-agent-api-llm-pricing-free-tier-lookup-7d80799f/llms.txt): $5/call via x402. Returns a comprehensive dump of AI language model prices, free tier details, and cost calculator data for hundreds of models
- [FreeTier Agent API — Full Verified APIs Dataset](https://www.zero.xyz/c/freetier-agent-api-full-verified-apis-dataset-78605561/llms.txt): $8/call via x402. Returns the complete dataset of 2,230 verified public APIs with metadata, licensed under CC BY 4.0, for agent discovery and integration planning.
- [FreeTier Agent API — World Reference Dump (Holidays, Countries, Timezones)](https://www.zero.xyz/c/freetier-agent-api-world-reference-dump-holidays-countries-timezones-2fd5a331/llms.txt): $6/call via x402. Returns a comprehensive dump of world reference data including holidays by country, country information, and timezone listings in a single JSON payload.
- [FreeTier Agent API — MCP Servers Dump](https://www.zero.xyz/c/freetier-agent-api-mcp-servers-dump-98a02cfa/llms.txt): $9/call via x402. Returns a paginated dump of all 4,259+ indexed MCP (Model Context Protocol) servers with metadata
- [FreeTier Agent API — Agent Tools Dump](https://www.zero.xyz/c/freetier-agent-api-agent-tools-dump-04d30655/llms.txt): $7/call via x402. Returns a full dump of all agent tools (APIs, MCP servers, and data utilities) available on the FreeTier Agent API platform, including AI model pricing, email domain checks, and more
- [FreeTier Agent API — x402 Services Dump](https://www.zero.xyz/c/freetier-agent-api-x402-services-dump-36ac0318/llms.txt): $6/call via x402. Returns a full dump of all x402 pay-per-call services indexed by the FreeTier Agent API platform

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)