Agent & Infrastructure

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Currently banned peer IPs and subnets from chainquery's independent full node. Bitcoin Core listbanned.

Request 1 to 10 grant records. x402 upto authorizes limit times $0.002. Settlement costs $0.002 for each returned record. The maximum price is $0.02 for 10 records.

MLB live play-by-play feed with real-time AI agent brain reactions — inning-by-inning data plus neuromodulated agent commentary as games unfold

Curated shelf of public-domain gothic and horror fiction, ranked by historical popularity. Returns title, author, year, book_id, and drill-down routes for full-text retrieval. No license, no API key required.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Whether given outputs are being spent by any mempool transaction, from chainquery's independent full node. Bitcoin Core gettxspendingprevout.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Verify a merkle proof that a transaction is included in a block, via chainquery's independent full node. Bitcoin Core verifytxoutproof.

AI completion, frontier tier — Claude 4.5 Sonnet (default; ?model=gpt-5|gpt-4o|gemini-pro|gemini-3.1-pro). Pay USDC per call, no API key, no signup. For agents that need a frontier model on hard analysis, synthesis, and drafting. See GET /v1/ai/models for the full menu.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Per-peer connection details for every node connected to chainquery's independent full node. Bitcoin Core getpeerinfo.

Schedule a future HTTP action or callback for autonomous agents. At a delay or a set time, either (a) execute an HTTP request you specify (method/url/headers/body) and capture the response for retrieval, or (b) deliver a JSON payload to your HTTPS callback URL (push) / hold it for polling. Lets agent loops defer and fire web actions without staying online or busy-polling.

One-time secret relay for inter-agent handoff. store(secret) returns a token; redeem(token) returns the secret exactly once, then burns it. Pass credentials or short-lived values between agents without persisting them.

HEALTH: medical-condition autocomplete/normalization (NLM). ?q=text. Returns JSON.

Get posts from a company's LinkedIn page. Pagination billing: call the first page normally and save billing.requestId from the Orthogonal /v1/run response. For later page, offset, or cursor calls on the same logical search, pass parentRequestId with unchanged non-pagination parameters. Valid continuation calls still get their own request IDs and quoted price, but are charged 0. Changing filters starts a new billable request.

Find the best x402 paid API for your need across the CDP Bazaar catalog: full-text search by keyword, filter by max price per call and network, ranked by measured 24h uptime then price. Each result includes live health data (uptime percent, average latency) that the official catalog does not have. The comparison-shopping layer for agent commerce.

Test endpoint for verifying x402 payment integration end to end. Returns a static greeting in the Agent Tollbooth standard response envelope. Not a data product — use it to smoke-test your x402 client for $0.001 before calling our compliance endpoints: OFAC sanctions screening ($0.01) and FDIC bank verification ($0.01), listed under this same payTo address.

EU AI Act definitions — Regulation (EU) 2024/1689 (one Markdown file per request)

POST JSON: {"event":{id,pubkey,created_at,kind,tags,content,sig},"checkZap":false} Verifies id/sig. checkZap extracts kind-9735 bolt11; preimage proves zap settlement. Does not hit relays. Spec: https://api.major-miners.com/.well-known/l402-services

POST JSON: {"name":"preimage_verify","args":{"preimage":"<64hex>","paymentHash":"<64hex>"}} Prefer preimage_verify, lnurl_resolve, nip05_resolve, nostr_event_verify, bolt11_decode. Free catalog: GET /api/tools. Spec: https://api.major-miners.com/.well-known/l402-services

POST JSON: {"text":"hello","type":"uppercase"} type=uppercase|reverse|leetspeak|morse Demo transform. Prefer LNURL / Nostr / preimage_verify on this host. Spec: https://api.major-miners.com/.well-known/l402-services

POST JSON: {"target":"user@domain"} optional amountSats for a BOLT11. Does not pay. Lightning-native: resolve LN addresses / LNURL-pay. Spec: https://api.major-miners.com/.well-known/l402-services lnget -X POST -H "content-type: application/json" -d '{"target":"victoriousinnovation563427@getalby.com"}' https://api.major-miners.com/api/lnurl

POST JSON: {"inboxId":"<uuid>","to":"addr","subject":"hi","text":"hi"} Outbound is allowlisted until SES production — a paid 402 can still 403 if the recipient is not allowed. Create inbox: POST /api/mail/inboxes (100 sats). Spec: https://api.major-miners.com/.well-known/l402-services

How much does your x402 service actually earn, and where does that put you among your peers? We measure real USDC inflows to every payTo address in the Bazaar catalog over 30 days and return the distribution. Pass ?domain=<yours> for your own revenue, calls, unique payers and percentile, plus the cohort of services in your price band. Omit it for the market distribution alone. Individual competitors are never listed. Measured, not estimated.

Boon self-reported, receipt-verified, and gratuity-backed endpoint reviews

Pay-per-call API for AI model benchmarks, comparisons, and cited research

ShieldAPI - x402 security preflight before agents trust an identity, sender, or email counterparty