Recent Kaspa blocks (max 144 per call = $1.44 cap). Optional chain_only flag to filter selected-parent chain blocks. AI agent API for backtesters and indexers. Informational research data — not investment advice.

Heuristic risk flags for a Ethereum contract from free public data: Sourcify verification, upgradeable proxy + admin, owner type, mint/pause/blacklist/fee selectors, bytecode size. Not an audit or financial advice.

Decode EVM calldata before signing: function signature candidates (openchain DB), decoded args, and plain-English warnings for approve/setApprovalForAll/permit/unlimited amounts.

Foreign exchange rate between two fiat currencies from official ECB reference data — e.g. USD to EUR, GBP to JPY. Returns the current rate and date as JSON. Use for: currency conversion, forex rate lookup, multi-currency pricing, invoice conversion. $0.001 USDC per call.

US inflation calculator — cumulative CPI inflation between any two years, e.g. what $100 in 1990 is worth today (?from=1990&to=2026&amount=100). Returns cumulative inflation % and the inflation-adjusted value as JSON, from official CPI data via FRED (Federal Reserve). Use for: purchasing power comparison, real vs nominal value, historical price adjustment, cost-of-living calculation. $0.003 USDC per call.

Bulk Bitcoin block extract (max 144 blocks per call, flat price per call). Returns array of per-block summaries (height, time, miner pool, tx count, witness/taproot/ordinals/op_return stats, total output, coinbase reward).

Heuristic risk flags for a BNB Smart Chain contract from free public data: Sourcify verification, upgradeable proxy + admin, owner type, mint/pause/blacklist/fee selectors, bytecode size. Not an audit or financial advice.

Recurring webpage monitor for prices, inventory, availability, documentation, policies and competitors. Returns changed/unchanged state, current hash, metadata and HTTP/security context plus a ready next request. Designed for scheduled polling about every 5 minutes.

Xynaptic Plombier Search — find plombiers in any French department: official companies registry (active businesses only). GET ?dept=69 (&city= optional). Returns name, city, SIREN. Official French open data.

Check a BNB Smart Chain wallet's ERC-20 approvals: allowances for 8 major tokens (USDT, USDC, WBNB, BUSD...) to common spenders (Permit2, PancakeSwap v2 Router, PancakeSwap Smart Router, PancakeSwap Universal Router...); flags unlimited approvals.

Detect elevated control-bypass risk from fragmented, delegated, wallet-hopped, near-threshold, burst, repeated, or concentrated autonomous spend.

Global commodity benchmarks: Monthly world commodity benchmark prices in nominal US dollars, back to 1960. Up to 100 rows per call, $0.10 USDC. Filters: source, scope, commodity, unit, kind.

Get a short completion from a capable model, paid per call, with a bounded output of 2000 tokens. LLM inference pay-per-call, no account, no API key: prompt in, completion out (DeepSeek v4, up to 2000 output tokens). STANDARD tier; /v1/llm/pro is the PRO tier with four times the output budget. Original note on $/c…

Pay $1.00 USDC to play Rock Paper Scissors against the server. Win pays 2.0 USDC, tie pays 0.5 USDC, loss pays nothing. Network: Base Mainnet. Each request plays one complete turn-based round against a server-selected move and returns both moves plus the final outcome, making it useful for agent gameplay, competitive game APIs, and simple strategy-game interactions.

Coordinate agents sharing one account: reuse matching JSON reads within 30 seconds, or stop duplicate operations using a stable business event ID. Enroll once at /v1/enroll, then authenticate paid calls with your Bearer key. After EXECUTE use /v1/start and /v1/commit around your own tool. Same-request payment recovery is free. Integration and cost measurement: /agent. External execution is not guaranteed exactly once.

Solana swap triage for AI agents. Returns a Safe / Protect / Refuse verdict for a proposed swap: token risk screening, sandwich-attack exposure, and the priority fee and Jito tip to use. Call it before signing a swap. Advisory only: builds no transaction and never handles keys. Pay in USDC; network fees are sponsored. Full contract: GET /v1/agent. Terms: https://zendiq.ai/agents/terms/

Creates or verifies hash-only caller-submitted x402 response provenance records with scoped idempotency and one-time lookup secrets.

Returns current market risk state, per-symbol signal streaks, and active cooldown timers — use it as a pre-trade risk gate before acting on any signal. Typical agent tasks: check if BTC or ETH is in cooldown before a trading agent acts, confirm signal streak length for momentum context, gate an autonomous workflow on risk state, or add a safety check ahead of a decision call. Fresh continuously, USDC on Base mainnet via x402.

Korea company due diligence report (KYB) in English: identity and IDs, live National Tax Service status, normalised address, 3 years of financials (revenue, operating profit, debt ratio), recent DART filings and corrections, auditor opinion, and risk flags, each with its official source and date. Facts only, not a rating.

UK beneficial ownership screening: company number returns persons with significant control (PSC) — name, kind, nationality, nature of control. Companies House public register data (OGL v3.0). Dates of birth never returned (UK GDPR).