24K Labs API

A human read this entry. That is the one thing true of everything on the list. Beyond that: the endpoint answered an x402 request when we knocked it, on the date shown. That date is the claim — not a word, a date. None of it is a delivery test. We have not paid for this and graded what came back, so read it as "we checked what is stated above," never as "this is worth the money."

143 pay-per-call endpoints on one x402 v2 server, no account or API key: AI code work (explain, debug, review, security audit, automation scripts, MCP blueprints), text and document processing, image manipulation and OCR, weather/geocode/FX/crypto data, developer utilities (hashing, encoding, regex, cron, JSON/CSV/YAML/XML conversion, JSON Schema), and 17 finance calculators (amortization, NPV/IRR, Black-Scholes, liquidation price, impermanent loss, Kelly sizing). $0.001-$3.00 USDC on Base; six endpoints are tiered quick/standard/pro, the rest flat. All 143 knocked 2026-08-29 — 143 of 143 returned a live 402. ([Manifest](https://api.24klabs.ai/.well-known/x402.json))