Explore APIs

PulseWatch Status API: Status of up to 25 vendors in one call (PulseWatch). Live status and active incidents for up to 25 SaaS vendors in one call (GitHub, Stripe, AWS and more). One JSON row per vendor. $0.05 USDC on Base.

Find the cheapest EVM chain before you transact. Compares live gas across Ethereum, Base, Arbitrum & Optimism and returns the cheapest chain with savings % (e.g. "Use Base — saves 99.8% vs Ethereum"). Call this before bridging, deploying, or any tx with chain flexibility. $0.001 USDC, no API key.

Access to api/v2/transactions. List blockchain transactions with filtering options for status, type, and method

Eurostat Comext trade facts (value and quantity).

Premium CASSIA opportunity intelligence

Bitcoin read-only RPC and supported simulations. Submit method and params as JSON. Method schemas, limits and prices: https://api.block402.xyz/docs/api.md. Obtain a bound quote with a private Idempotency-Key before signing.

Turn text into a numeric embedding vector for semantic search, RAG and similarity. Multilingual.

Stored odds-comparison snapshots from the arbitrage worker for trend analysis. $0.01 USDC per call on Base.

ApexScout one-cent x402 proof. Buyer-controlled GET retry only; unpaid 402 is not revenue. Successful paid proof includes one free receipt-bound compatibility diagnosis. It requires explicit action, never navigates or pays automatically, may return no paid recommendation, and requires separate buyer approval for any later paid recommendation.

Real-time Fuse payment network statistics — transaction volumes, network health, gas tiers, FUSE token price.

Trust score for one agent. Pass agent_id as a query parameter so every check is the same resource.

JSON-RPC read access to EVM chains (base, ethereum, polygon, arbitrum, optimism) with no API key. Send a standard JSON-RPC body (eth_call, eth_getBalance, eth_blockNumber, eth_getLogs). Also callable as GET with the same fields as query parameters.

JSON-RPC read access to EVM chains (base, ethereum, polygon, arbitrum, optimism) with no API key. Send a standard JSON-RPC body (eth_call, eth_getBalance, eth_blockNumber, eth_getLogs). Also callable as GET with the same fields as query parameters.

JSON-RPC read access to EVM chains (base, ethereum, polygon, arbitrum, optimism) with no API key. Send a standard JSON-RPC body (eth_call, eth_getBalance, eth_blockNumber, eth_getLogs). Also callable as GET with the same fields as query parameters.

Deterministic JSON evidence checks with signed verification evidence

List governance proposals

YRUZ Site Audit: Website audit in one call: TLS certificate, security headers, HTTPS redirect, HTTP/2 and HTTP/3, compression, response time, redirects, SEO tags and AI-agent readiness (llms.txt, robots rules for AI bots, sitemap, structured data). Scores 0-100 per area with concrete fixes.

Token contract risk summary (honeypot, taxes, mintable, proxy, owner powers, holder concentration) with a 0-100 risk score. Chains: 1, 56, 137, 42161, 8453, 10, 43114.

DeFi-Yield Cross-Chain DeFi Yield & Stablecoin APY Radar: Scans risk-adjusted DeFi lending and vault APYs across Base, Arbitrum, Optimism, and Polygon.

Buy $0.10 of prepaid credits for the YiduoChan inference gateway and receive a working API key in the response. The key works with any OpenAI-compatible client against https://yiduochan.com/v1 and covers chat, reasoning, text-to-speech, image and video models. Credits are spent per token at published rates; no account, email or signup is required.

XYZ University — 2025/2026 academic session school fees. Grants access to course registration.

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x402 pre-pay trust/health check: probes another x402 endpoint (unpaid) and returns a verdict.

AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat

One-country brief from the Voidly open censorship observatory: current index status (score, OONI anomaly rate, affected services), up to five recent incidents with citable IDs, and the 7-day censorship-event forecast. Input {"country":"IR"}: two letters (ISO 3166-1 alpha-2, any case). Codes without data return an empty incident list. An unavailable section is omitted. Voidly data CC BY 4.0; OONI-d

test-1 agent service: $0.01 per request

Submit async scene generation job

Structured batch data for agents, paid per request with x402 v2

Top trending GitHub repositories as JSON (name, url, stars, language, today_stars)