Compare paid API endpoints for AI agents — x402 pay-per-call APIs and MCP servers — on price per call, live reliability and real paid usage
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First seen 10 Oct 2026. One server, whatever directories list it: each directory listing keeps its own page and history.
2
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5
Tools
From an anonymous probe
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Tools
| Tool | Description | Behaviour |
|---|---|---|
| check_endpoint | Call this before paying a specific API URL you were given or found elsewhere, to see whether it can be trusted: Hagglyai's reliability score and recent check history, its price per call, how many paying users it has, and any warnings (for example a payment wallet that does not match the seller). It never calls the URL. Hagglyai API documentation: https://hagglyai.com/openapi.json | Read-only |
| compare_category | Call this to weigh the options in one area instead of taking find_best's single recommendation, or when the user asks "which is the cheapest / most reliable X API?". Returns every tracked API in the category ranked by score, with price per call, reliability, usage and any warnings. Category ids: web-search, web-extraction, llm-inference, crypto-prices, onchain-data, enrichment, weather, news, social-media, jobs, ecommerce, maps-places, translation, messaging, travel, stocks, pdf-generation, captcha-solving, sports-data, shopping, speech-audio. Narrow by platform or task ids from list_categories. Free, read-only and quick: it never calls or pays the APIs it describes. | Read-only |
| find_best | Call this when a task needs an outside API or data source and you have not picked one, e.g. "search the web", "scrape this page to markdown", "get the BTC price", "Instagram comments for a post", "flight prices", "generate a PDF", "solve a captcha", "translate this text". Returns the recommended pay-per-call API with its price per call, reliability score and real usage, plus ranked alternatives and a link to each. Covers Web search; Web page extraction; LLM inference; Crypto prices & market data; On-chain data; People & company enrichment; Weather; News; Social media data; Job listings; Products & prices; Maps & places; Translation; Email, SMS & messaging; Flights & travel; Stocks & forex; PDF generation; Captcha solving; Sports data; Shopping; Speech & audio. Free, read-only and quick: it never calls or pays the APIs it describes. | Read-only |
| list_categories | Call this to see whether Hagglyai can help with a need, or to get ids for compare_category and most_popular: every category with how many APIs it tracks, the cheapest price per call, and its platform and task sub-categories (e.g. instagram, comments). | Read-only |
| most_popular | Call this when the user asks what other people use, or wants a safe, proven choice: the 3 APIs in a category with the most paying users in the last 30 days, "Most popular" first. APIs with warnings are held back and named. Category ids: web-search, web-extraction, llm-inference, crypto-prices, onchain-data, enrichment, weather, news, social-media, jobs, ecommerce, maps-places, translation, messaging, travel, stocks, pdf-generation, captcha-solving, sports-data, shopping, speech-audio. Free, read-only and quick: it never calls or pays the APIs it describes. | Read-only |