Agent & Infrastructure

Generate a realistic mock API response with proper headers, status codes, and schema-matching body data.

Test an API endpoint: send request, validate response status and schema. Integration testing as a service.

Look up known vulnerabilities for a package+version via OSV API. Supports npm, PyPI, Maven, Go, Cargo, NuGet. Returns CVEs with severity and fix versions.

Fresh probe of your endpoint plus an Ed25519-signed quality attestation (compact JWS, 24h TTL) you can embed in your 402 responses to raise buyer conversion.

Generate an i402 plan from a natural-language intent. Returns a 402 response with a list of x402 calls the agent should sign and execute.

Introduces two agents to each other only after each side's identity and delegation chain has been verified - reduces the risk of transacting with an impersonated or unauthorized counterparty. | BlindOracle by Craig M. Brown (craigmbrown.com) - counterparty-risk infrastructure sold to autonomous AI agents; self-built multi-agent framework (42+ agents); ERC-8004 agent passport #60979; paid via x402 in USDC on Base

Get GitHub repository details — stars, forks, contributors, releases, and license info. AI agent API for open source intelligence. Accepts USDC payments on Base and Solana

The Ozmium machine API front door: pays back the full priced catalog (every /v1 resource with live pricing, discovery links, OpenAPI, MCP tools). The same catalog is free at GET /v1- this priced alias exists because agents and x402 scanners probe /api expecting the 402 handshake. GET /api.

OpenAI-compatible chat completions gateway (alias of /v1/chat/completions for api/v1-style base URLs) — standard request shape, model chosen in the body: any gpt-* chat model (not Claude/embeddings), each at its own price. Priced per model, $0.005–$0.65 per call in USDC via x402, no API key: POST unpaid and the 402 quotes your model's exact price. Supports response_format json_object. Free model catalog: GET /v1/models.

OpenAI-compatible text embeddings API (alias of /v1/embeddings for api/v1-style base URLs) — input as a string or batch of up to 128 strings, model text-embedding-3-small (default) or text-embedding-3-large. Flat $0.005 per call in USDC via x402, no OpenAI account or API key.

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://api.webbersites.com and pay per call. Caps: 16,000 input chars, 1,024 output tokens (max_tokens clamped), text-only, no streaming.

x402swag.com — merch store for AI agents and builders. T-shirts, stickers, mugs and custom print-on-demand designs. Full catalog with prices, variants and the exact buy flow in one call.

Real-time web search for AI agents. Search the web for current and up-to-date information, news, facts, research, documentation, and sources beyond model training data. Returns ranked structured JSON results with title, URL, description, and position for web grounding, RAG retrieval, research, and fact-finding. Send query, optional limit, and optional freshness as URL parameters. Keyless x402 pay-per-call; no API key, account, or subscription required.

Agent-readiness scan of any public website: scores 0-100 on MCP server, /.well-known/agent.json, llms.txt, OpenAPI validity, JSON-LD catalog and x402/MPP payability. Same published methodology as the asterpay.io checker. Paid via x402.

Batch attestation for agent decision streams: up to 1000 leaves under one ML-DSA-65 signed Merkle root, anchored to Hedera mainnet HCS. Per-leaf attestation IDs with free public verification, plus a paymentReceipt opening the commitment sealed in each record. ML-DSA-65 (FIPS 204) post-quantum signed, Hedera-anchored, audit-ready evidence.

Hero SKU: Pearl Research L1 telemetry (pearld RPC, community nodes, poll history). Free trial: GET /api/a2a/pearl/status

x402 seller trust check before you pay: probes the live 402, reads USDC inflow to payTo on Base, counts payers and flags self-dealing (operator paying itself) - verdict green/yellow/red with reasons and the window it could read

Analyze AI agent execution traces (LangChain/CrewAI/AutoGen). Identifies failure points, root causes, token waste, and suggests fixes.

Hire the Town. Outsource a task to AI agents on the Frantic bounty board. Describe the work, the deliverable, and the acceptance criteria, then fund the bounty with Base USDC in the same call. Agents claim it, submit their artifacts in the open, and are paid only when delivery is accepted. Every claim, judgment, and payout is sealed to a receipt ledger anyone can verify. New postings are screened before they reach the board.

Paid liveness probe for the MimirAPI counter. Returns pong, the SKU id, and a server timestamp. One tenth of a cent buys a complete challenge, sign, settle, serve round trip — the cheapest possible proof that your x402 client wiring works before you spend real money on real SKUs.

Anthropic Messages API over x402 - point the Anthropic SDK (or Claude Code / the Agent SDK) at base_url https://agent402.tools/v1/pro and pay $0.10 per call in USDC, no API key, no signup. Same models, caps and price as this tier's /chat/completions route; any model here is served through the Messages wire (Claude natively, others translated). Up to 48,000 input chars and 4096 output tokens; streaming supported.

OpenAI Responses API over x402 - point the OpenAI SDK's responses.create() (or the OpenAI Agents SDK) at base_url https://agent402.tools/v1/pro and pay $0.10 per call in USDC, no API key, no signup. Same models, caps and price as this tier's /chat/completions route; any model here is served through the Responses wire.

OpenAI's transcription wire on the ten-minute tier: POST multipart/form-data with a `file` part. Same model as /v1/audio/transcriptions with a longer cap, for a recording a four-minute route refuses.

Agent-SOFR — decentralized USD short-rate benchmark for AI agents. Weighted-median of 7 sources + variance + regime premiums. BNS-calibrated 6-mode classifier on 444k ETH/USDC 5-min bars (λ=1.097 closed-form). Open + IPFS-pinned methodology: agent-sofr-v1.