Bitcoin block metadata by height or hash (or the chain tip when neither is given), fused with the current difficulty-adjustment context, a computed halving countdown and a network hashrate snapshot. Informational, not advice.

Use when an agent wants to know what a wallet has been doing before paying it, accepting payment from it or following it. Returns Recent transactions, token transfers, DEX swaps, NFT activity and internal transactions for an EVM wallet on Base or Ethereum, with a heuristic risk score. $0.03.

Use when an agent needs wallet transfers. Returns ERC-20 transfer history for one Base wallet, backed by the public Base transfer index: filter by token, direction and page, with normalized amounts, counterparties and timestamps; priced per bounded request $0.005/call via x402. $0.005.

Convert a nominal annual rate (APR) compounded m times per year into the effective annual rate (EAR / APY): (1 + apr/m)^m - 1. Set continuous:true for e^apr - 1.

Validate a JSON payload against the request or response schema for one operation in an OpenAPI 3.x or Swagger 2.x spec. Locate the operation by operationId or method+path; choose `part: "request"` or `part: "response"` (status defaults to the first 2xx). Deterministic subset of JSON Schema: type, required, enum, properties, items, additionalProperties:false, oneOf/anyOf/allOf, $ref-detection (not dereferenced).

Use when an agent needs people search. Returns People search for agents over a rich filter vocabulary (names, locations, skills, titles, seniority, company name/domain/industry/HQ/specialties), with bounded public-reference results and explicit nulls for private contact and employment fields. $0.10.

Daily total value locked history for one chain or for all of DeFi, up to ten years of points, with latest, first, minimum, maximum and mean and the change over the window. Use it when an agent is charting a chain's growth or checking whether a TVL move is new or a return to trend.

Use when an agent needs bazaar market report. Returns Comprehensive x402 Bazaar market report from the latest daily full-catalogue snapshot: marketplace totals, price percentiles and USD bands, network split, top 15 services by settled calls and by unique payers, top 10 sellers, new entrants vs the prior snapshot, top movers by call growth, and the count of listings with real repeat demand (>=5 unique 30d payers). $0.50.

Use when an agent needs fetch x402. Returns Fetch and extract content from web pages, handling x402 edge payments automatically. $0.02.

Use when an agent needs token metrics. Returns Token price and on-chain market metrics from public DeFi data, including chain TVL, DEX volume, fees, yields and protocol context. $0.003.

Use when an agent needs base tx status. Returns Return Base transaction success or revert state, block number, confirmations, gas used, and effective gas price for a transaction hash. $0.003.

Use when an agent needs people enrich. Returns Accountless people enrichment lookup that normalizes supplied name, email, phone, company, profile URL and location signals into structured identity and requested fields; unavailable third-party fields are explicit nulls. $0.28.

Use when an agent needs bazaar listing lint. Returns Quality-score an x402 Bazaar listing (0-100): live SSRF-guarded probe of the resource for a valid 402 challenge with description/output-schema/category/price-floor checks, plus snapshot-history analysis from daily full-catalogue Bazaar snapshots (price churn, delisting). $0.01.

Use when an agent needs award flight search. Returns Validate and normalize an award-flight search (origins, destinations, date window, cabin, passengers) into a stable machine-readable request and response shape, without claiming inventory Oblique does not hold. $0.02.

Use when an agent needs a cited answer it can show its principal rather than a bare completion. Returns Concise answer to a research question with cited sources, a confidence level and a disclaimer. $0.65.

Use when an agent needs base wallet profile. Returns Accountless Base mainnet wallet profile with native and ERC-20 balances, bounded transfer activity, counterparties, contracts, freshness metadata and evidence hash. $0.01.

Use when an agent needs bazaar category heat feed. Returns Loopable Bazaar category-heat change feed with added, removed, rank-change and price-change records, stable cursors and feed timestamps. $0.001079.

DEX swap quote and best route ($0.005): how much you get now across Uniswap v2/v3/v4 and Aerodrome (direct or through WETH) on Base, Ethereum, Arbitrum, Optimism or Polygon, with price impact, the minimum to accept at your slippage and alternative routes. Simulated with eth_call; nothing is executed. Use right before an on-chain swap.

Screen a crypto address (EVM/BTC/TRON etc.) against Japan MOF asset-freeze sanctions designations (外為法・資産凍結措置). Returns match status with designated-entity details and list date. Source: Ministry of Finance Japan official CSV, updated daily. Factual screening data; not legal advice. Free meta sample: /v1/sample/reg.sanctions

Historical and current Japanese interest-rate series from the Bank of Japan's official Time-Series Data Search Site: the unsecured overnight call rate (proxy for the BOJ policy rate operating target, daily since 1998) and the basic discount/loan rate (formerly 公定歩合, daily since 1882). Factual published data only; not investment advice or a rate forecast.