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.

Decoded Base transaction receipt: success status, confirmations, and decoded USDC Transfer events. Useful for automated payment-confirmation checks. Reads Base public RPC directly.

Base network gas fee statistics (1-minute baseFeePerGas buckets): p25/p50/p90/p99 and the current value's percentile rank within the window. Descriptive statistics only; not investment advice.

Stablecoin peg-deviation summary on Base (USDT/USDC, USDC/USDbC): current deviation in bps from the 1.0 peg per on-chain pool, plus how many consecutive 1-minute buckets have exceeded a deviation threshold. Computed from our own on-chain mid observations vs a fixed 1.0 reference. Descriptive statistics only; not investment or redemption advice.

Spread anomaly events where 1-minute |spread| exceeded the trailing 30-day p99 baseline. Descriptive statistics only; not investment advice. Free 15-min-delayed sample: /v1/sample/dex.spread_anomalies

1-minute cross-venue spread statistics (bps) for cbBTC/USDC on Base: Uniswap v3 0.05% vs Aerodrome Slipstream 0.05% (on-chain mids). Same methodology as dex.spread_summary, dedicated to Base's primary BTC-wrapper venue-routing question. Descriptive statistics only; not investment advice.

Bulk historical window (up to 24h) of 1-minute DEX spread statistics for a given pair, in one call. Useful for slippage calibration and backtesting. Descriptive statistics only; not investment advice.

1-minute cross-venue spread statistics (bps). WETH/USDC across Uniswap v3 0.05%/0.3% and Aerodrome Slipstream on Base (on-chain mids); SOL/USDC as Jupiter aggregator mid vs executable 1-SOL quote (liquidity/impact measure, Powered by Jupiter). Descriptive statistics only; not investment advice. Free 15-min-delayed sample: /v1/sample/dex.spread_summary

Time-weighted average price (1h/24h) per venue pair, computed from our own 1-minute observation buckets. Includes coverage_pct and method notes for verifiability. Descriptive statistics only; not investment advice.

Wrapped-BTC parity monitor on Base: WBTC/cbBTC on-chain pool price vs 1:1 parity, in bps, plus consecutive-minute streak beyond a deviation threshold. Useful for collateral-acceptance decisions between BTC wrappers of the same underlying asset. Descriptive statistics only; not investment advice.

Search Japan's official statistics catalog (e-Stat / 政府統計の総合窓口) by keyword — population, prices, trade, labor, and hundreds of other government survey series. Returns table metadata (id, title, publishing ministry, cycle, last updated); use the id with estat.table_data to fetch actual figures. Source: e-Stat API, government standard terms of use (CC BY-compatible, commercial use permitted). Factual catalog data only.

Fetch data rows from a specific e-Stat statistical table (by id from estat.search), with all category codes (region, item, time period, etc.) pre-resolved to their human-readable Japanese labels in a single call — normally requires a separate metadata lookup and manual code-matching against the raw e-Stat API. Source: e-Stat API, government standard terms of use (CC BY-compatible, commercial use permitted). Factual statistical data only; not investment or economic advice.

Nearest designated emergency evacuation sites (指定緊急避難場所) in Japan to a given lat/lon, with per-hazard-type flags (flood/landslide/hightide/earthquake/tsunami/fire/inundation/volcano). Source: Geospatial Information Authority of Japan (GSI), nationwide, ~115k sites. Factual location data only; verify with local authorities before relying on this in an actual emergency.

Japan digital & financial regulatory events — crypto-assets and payments (FSA, e-Gov public comments, JVCEA, JCBA), AML/sanctions (JAFIC, MOF), tax (NTA), plus adjacent digital regulation (AI, cybersecurity, data). Structured in English with key dates, human-reviewed before publication. Factual reporting only; not investment or legal advice. Free 15-min-delayed sample: /v1/sample/reg.events

AI & digital-regulation segment of Japan regulatory events: AI Basic Plan, generative-AI guidelines, cybersecurity strategy, privacy rules. English, human-reviewed. Factual reporting only; not legal advice.

AML & sanctions segment of Japan regulatory events: JAFIC (criminal-proceeds act), MOF asset freezes, enforcement actions, FATF-related items. English, human-reviewed. Factual reporting only; not legal advice.

Cheapest tier: headlines only (original + machine-translated title) across all 11 Japan regulatory sources, no summary. Upsell entry point to /v1/reg/events. Factual; not legal advice.

Stablecoin & electronic payment instrument segment of Japan regulatory events (資金決済法, 電子決済手段). English, human-reviewed. Factual reporting only; not legal advice.

Tax segment of Japan regulatory events: NTA crypto-asset tax treatment, CARF (Crypto-Asset Reporting Framework), tax-reform items. English, human-reviewed. Factual reporting only; not tax advice.

Check whether a name is a Japan-registered crypto-asset exchange business (FSA license list). Fuzzy name match. Source: FSA official Excel list, PDL1.0-attributed. Factual; not legal or compliance advice.

Check whether a name appears on Japan FSA's list of unregistered/warned financial business operators. Informational only, not a legal prohibition list. Source: FSA official HTML list, PDL1.0-attributed.

Structured lookup of Japan law articles containing a keyword, via live proxy to e-Gov Law API v2 (Digital Agency). Returns law title/id, category, excerpt and source URL. Live data, not cached. Factual; not legal advice.

National-level public-safety situation snapshot, quoted verbatim from Japan's National Police Agency (NPA) official annual white paper: a national headline figure for legally designated groups under a longstanding public-safety statute, group names as stated by the agency itself, and prior-year status-change statistics. This is aggregate national reporting only — it does not identify any specific individual or business, and is not a substitute for official counterparty due-diligence channels.

Full machine-readable list of crypto addresses under Japan MOF asset-freeze sanctions (外為法), with designated-entity context (name, notice date, UN ref). Source: Ministry of Finance Japan official CSV, updated daily, attributed per 公共データ利用規約. Factual data; not legal advice.

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

Batch screening of up to 100 crypto addresses against Japan MOF asset-freeze sanctions list in a single call. Source: Ministry of Finance Japan official CSV. Factual; not legal advice.

One-call screening across Japan MOF asset-freeze list and OFAC SDN List (digital currency addresses). Upgrade path from /v1/reg/sanctions/check. UN/EU/UK lists not yet included. Factual; not legal advice.

Freshness heartbeat only (list date, address count, fetched_at) for both Japan MOF and OFAC sanctions lists. No addresses. Cheapest polling entry point for change-detection loops.

Day-over-day added/removed events on Japan MOF's crypto sanctions address list. Lightweight alternative to buying the full list (/v1/reg/sanctions/addresses) every time. Factual; not legal advice.

Single-address screening against OFAC SDN List digital currency addresses. Source: U.S. Department of the Treasury (public domain, CC0). Factual; not legal or compliance advice.

Day-over-day added/removed digital currency addresses on OFAC's SDN List. Source: U.S. Treasury OFAC (public domain, CC0). Factual; not legal advice.

x402 payment E2E test endpoint (echoes query). Factual data only; not investment advice.