Translation: MCP servers, A2A agents and x402 APIs

• AgentBIT API Live x402

  Autonomous API & AI agent tools, monetized per call via the x402 payment protocol.

  x402 paid API · 12 endpoints · check 90/100

• Quartermaster Live x402

  Small, reliable utility APIs for AI agents. Paid endpoints charge per call in USDC over the x402 protocol (HTTP 402 flow) - no accounts, no API keys. Free endpoints are open.

  x402 paid API · 12 endpoints · check 89/100

• agentforge-taupe.vercel.app Live x402

  Payment flow verification for agents integrating x402: confirms your wallet and payment channel work before you spend on a real endpoint. Category: infra. (19 paid endpoints on agentforge-taupe.vercel.app.)

  x402 paid API · 12 endpoints

• agentindex.world Live x402

  Fresh operational audit of any public agent or paid API: reachability, latency, HTTP status, x402 challenge, price/network/payTo, OpenAPI, agent card and MCP manifest. Returns a 0-100 score, verdict and issues. Try GET…

  x402 paid API · 12 endpoints

• agents.daedalusdevelopmentgroup.com Live x402

  DDG agent-payable service request (248 paid endpoints on agents.daedalusdevelopmentgroup.com.)

  x402 paid API · 12 endpoints

• clink-lithium-vault.fly.dev Live x402

  X/Twitter search for AI agents - live tweets via advanced search: from:user, exact phrases, #hashtags, min_faves, lang, since/until dates. Returns up to 20 newest matches with author, followers, likes, retweets, views,…

  x402 paid API · 12 endpoints

• clinkagent.com Live x402

  What do the prediction markets say? Pass a question, get a finished read an agent can use directly: the best-matching market on Polymarket and on Kalshi with implied probability and 24h/7d moves, the cross-platform gap…

  x402 paid API · 12 endpoints

• erb-llm.com Live x402

  Privacy-first chat API: prompts run on a local open-weight model on dedicated hardware - your data is never forwarded to OpenAI/Anthropic or any third-party LLM cloud. OpenAI-compatible chat completions: summarize, draf…

  x402 paid API · 5 endpoints

• flat-rate-llm.kikoribera03.workers.dev Live x402

  Generates a 1024x1024 JPEG from a text prompt with FLUX.1 [schnell] in about 2 seconds. Returns a hosted image URL valid for 24 hours that you can hand straight to the next tool; add inline=true to also get the base64.…

  x402 paid API · 12 endpoints

• gibbr.app Live x402

  Translation tuned for skilled-trade work: HVAC, refrigeration, electrical and construction terms stay correct instead of collapsing into a generic word. Handles text typed fast without accent marks.

  x402 paid API · 1 endpoint

• hydratrader.ai Live x402

  Summarize text. Classify sentiment. Rewrite. Extract keywords. Translate. When to use: cheap agent glue / probe steps for buyer-supplied text. Returns JSON for $0.01 per call in USDC on Base via x402. No API key. Local-…

  x402 paid API · 9 endpoints

• interzoid.com Live x402

  Generate an AI-powered similarity key for individual/person name matching. Handles variations like 'Bob Smith', 'Robert Smith', 'Smith, Robert J.' producing the same key for matching and deduplication. (15 paid endpoint…

  x402 paid API · 12 endpoints

• leetspeak-translator.underscoredone.com Live x402

  Takes a piece of text and either turns it into leetspeak (swapping some letters for numbers and symbols, like 'hello' becoming 'h3110') or turns leetspeak back into normal, easy-to-read words. The same words always prod…

  x402 paid API · 1 endpoint

• library.forgemesh.io Live x402

  Deterministic daily book pick from the indexed corpus, date-seeded so every caller gets the same answer on the same day. Optional date override for backfill. Returns book_id and drill-down routes. No license, no API key…

  x402 paid API · 6 endpoints

• netintel.dev Live x402

  Structured live crypto market data for ~50 top assets in one JSON call: spot price and 24h open/high/low/volume/change (Coinbase Exchange) plus market cap, rank and circulating/total/max supply (CoinGecko). Quote in USD…

  x402 paid API · 12 endpoints

• scribe.vimabrosta.com Live x402

  Look up a domain: registration data from RDAP (registrar, created, expires, status, nameservers), live DNS records (A, AAAA, MX, NS, TXT, CNAME), the TLS certificate served at the name (issuer, validity, alternative nam…

  x402 paid API · 4 endpoints

• sumvid.app Live x402

  Full transcript of a YouTube video from its URL — captions/subtitles as clean plain text in your language. YouTube transcript, video to text, captions extraction, subtitle download, speech to text, multilingual. 105 lan…

  x402 paid API · 1 endpoint

• webbersites.com Live x402

  ANTHROPIC-COMPATIBLE /v1/messages — Claude Haiku 4.5 through the exact Anthropic API dialect: same request/response shape, no Anthropic account, the x402 payment IS the auth. Point an Anthropic SDK's base_url at https:/…

  x402 paid API · 12 endpoints

Related capabilities

x402 paid APIsSummarization & writingDocuments & PDFsVideo & audioResearchOn-chain dataAI models & inferenceTrading & markets

How to use one

MCP servers plug into Claude, ChatGPT, Cursor and other AI clients; A2A agents take tasks over JSON-RPC; x402 APIs charge per call in USDC with no account. Guides: A2A vs MCP · How to call an A2A agent · x402 for agents.

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