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Public API accepting x402 and MPP payments. KYA trust scoring, merchant discovery, USDC to EUR via SEPA Instant in under 10 seconds.

Buy gift cards, eSIMs, mobile top-ups and prepaid cards with USDC via x402. 10,000+ brands across 180+ countries. No API keys or Bitrefill account required — wallet payment and optional SIWX sign-in only.

Convert stablecoins (USDC, USDT, DAI) to spendable prepaid cards and gift cards instantly. Works with Google Pay. Multi-chain: Ethereum, Solana, Stellar, Arbitrum, Base, Polygon.

Pay-per-use AI, DeFi, payment, compute, and RTP primitives for autonomous agents via x402 and MPP on Base.

Credit infrastructure for AI agents. They spend on credit, you settle later, with controls on every transaction.

Query indexed x402 payment data and send USDC on Base and Solana.

Signed spend receipts for agent x402 payments — who paid which call, verifiable by a third party. Treasury desk for agent spend — export, policy, evidence. Possession book for principals. POST /v1/chat/completions returns a signed receipt: hub, model, amount, verify_url. USDC on Base or Solana. POST /a2a-message is the same paid door. GET|POST /v1/agents/{agent_id}/book is possession-gated last-N collected spend with budget Y and remaining (prepaid ceiling). Private Spend: registered sessions get vendor_blind by default. Replaceable Signer: receipts carry dual signatures (primary + co_signatu…

Structural address check: country, street, city, and postal pattern for common countries (TR, US, GB, DE, FR, NL, …). Returns a normalised single-line form and named issues. Not proof of deliverability. (111 paid endpoints on 402.com.tr.)

Publish a listing on 402post, the classifieds board for AI agents: $0.03 USDC for 30 days. POST the listing as JSON; a bad one gets a free 422 with every error, a good one gets this 402. Dry run: POST /v1/posts/validate. Batch: {"listings"… (3 paid endpoints on 402post.com.)

Payment integration check for 0.001 USDC; no external data lookup. Returns time, rail, network mode and free/paid capabilities. HTTP payment options can include Base, Polygon, Arbitrum and XDC; the challenge lists currently available netwo… (3 paid endpoints on api.402rates.com.)

Convert a time between any two IANA time zones (DST-aware). Pay-per-call in USDC on Base.

Official daily foreign exchange reference rates from the European Central Bank (~30 currencies vs EUR, published each business day around 16:00 CET), rebased on request to any listed currency via EUR cross-rates and filtered to a requested… (3 paid endpoints on 4yearcycle.com.)

Get real-time spot price and market data for a cryptocurrency

Paid webhook/API execution for autonomous agents. Executes one public HTTPS action after x402 payment, applies retries and idempotency, then returns a signed receipt with request hash, response hash, target, status, and attempt count.

Returns network-wide totals: total x402 events, service count, and a UA classification breakdown (agent vs browser vs bot). Use it to benchmark your service's agent-traffic share against the network. (4 paid endpoints on ads.forgemesh.io.)

Aesthetic-medicine subset of the public EUDAMED UDI-DI list, synced 29 Sep 2026: 14,266 entries from 13 EMDN codes (dermal fillers and filling kits, breast and facial implants, barbed threads, liposuction, and Annex XVI aesthetic equipment… (2 paid endpoints on api.aestheticdata.io.)

Screenshot API for AI agents: send {url} and get a JPEG, PNG, WebP or PDF of the page as base64 in JSON, with final URL, byte size and pixel size. Pick a desktop, mobile or tablet viewport, full page, dark mode, a delay or one element by C… (25 paid endpoints on agdata.shveik.dev.)

Find the cheapest WORKING x402 service for a task. Compares thousands of paid APIs from the Coinbase, PayAI and Dexter catalogs by similarity, live price, uptime and speed (checked continuously). Send the header "X-Free-Tier: 1" for 20 fre…

A signed statement of the office's current holdings summary for $0.01 USDC — Agentic Private Office — Matthew Keddy: shareholdings, hyperscaler tenancies, keys and as-of, drawn from /facts.json and signed EdDSA (kid mk-office-x402-2026-09)…

Pay-per-scan AI agent-readability scan. POST { "url": "https://…" } with an X-PAYMENT header to run a scan with no account or subscription. Two tiers: $0.02 (25 pages) and $0.25 (250 pages), USDC on Base.

Get the indicative price for a swap using Allowance Holder to set allowances

Fast deterministic check that a public URL is alive: HTTP status, redirects, content-type, size, and title. Built for agent workflows before paying for deeper crawls. (3 paid endpoints on agent.kihustle.tech.)

Look up an ERC-8004 AI agent identity on Base mainnet. Returns name, description, services, x402 support, and owner. (3 paid endpoints on agent.memoryapi.org.)

Check GitHub's official status source for current incidents, component health, and scheduled maintenance before an agent retries, deploys, or escalates. (7 paid endpoints on agentbodega.store.)

Real-time crypto market news with sentiment analysis and top headlines ranked by importance, for $0.01 per call. One request, no parameters needed — get the latest market-moving stories as structured JSON, ready for trading agents and rese… (35 paid endpoints on agentdata-api.sander-van-aard.workers.dev.)

Classify text into categories you define, with a 0-1 score per category. Single-label or multi-label. Clasifica texto en las categorías que tú definas, con puntuación de 0 a 1 por categoría. Admite una sola etiqueta o multietiqueta. (12 paid endpoints on agente.revenuerecoveryai.app.)

SEC Full-Text Filing Search (3 paid endpoints on x402.agentfund.net.)

One paid call on agentic-coverage.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed…

One Capital Markets Record for $0.01 USDC — a listed issuer's identity, registry identifiers, aliases, listing, disclosure events, auditor and transfer agent, each field sourced to the public filing, served from the node of the issuer's ow… (2 paid endpoints on agentic-trades.ai.)

Allooloo Capital Markets estate index for $0.01 USDC: every market node (Canada, United Kingdom, United States, Germany, France, Netherlands, Switzerland, Australia, Singapore, Japan, South Korea), issuer and disclosure-event counts, drop…