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.

Peg/parity-deviation anomaly events where the 1-minute deviation from the 1.0 reference exceeded the trailing 30-day p99 baseline, across all monitored stablecoin and wrapped-asset pairs (USDT/USDC, USDC/USDbC, WBTC/cbBTC). Same detection framework as dex.spread_anomalies, applied to peg/parity pairs. Descriptive statistics only; not investment or redemption 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.

1-minute cross-venue spread statistics (bps) for AERO/USDC on Base: Aerodrome's own vAMM pool vs its Uniswap v3 0.3% pool (on-chain mids). Same methodology as dex.spread_summary, dedicated to Aerodrome's own governance token. Descriptive statistics only; not investment 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.

1h/24h realized volatility (stdev of consecutive 1-minute log returns) computed from our own on-chain mid observations for a monitored pair. Actual realized value over the window only -- not annualized, not a forecast. 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.

Weekly official Japan Customs reference exchange rate (税関長公示レート) used to convert import declaration values to yen under Article 4-7 of the Customs Tariff Law -- a live proxy to the Customs weekly CSV, not a real-time market rate. Source: Japan Customs (customs.go.jp), whose terms of use explicitly permit commercial use. Factual published data only; not a live FX quote or trading advice.

Japanese government bond yield curve (1 to 40 years, 15 tenors) from the Ministry of Finance's daily reference series. Complements boj.rates (the short-end policy-rate proxy) with the long end of the curve. Factual published data only; not investment advice or a rate forecast.

One call assembling a full previous day's worth of Japan regulatory events (all 7 sources, all categories) with a per-category count breakdown. Defaults to yesterday (UTC) since the current day's crawl is still in progress. English, human-reviewed. Factual reporting only; not legal advice.

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.

Broad crypto-asset segment of Japan regulatory events, wider than reg.events.aml/stablecoin: AML/sanctions, tax (CARF), stablecoins/payment instruments, and JVCEA/JCBA self-regulatory items in one feed. 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.

Paginated date-range query over reviewed past Japan regulatory events (all sources, optional category filter). For bulk historical retrieval rather than polling. English, human-reviewed. Factual reporting only; not legal advice.

Only the most recent hourly crawl cycle of Japan regulatory events (all 7 sources, all categories). Returns an empty array at minimal cost when there is nothing new. English, human-reviewed. Factual reporting only; not legal advice.

Narrow sanctions/asset-freeze segment of Japan regulatory events (資産凍結・経済制裁 items only) -- a tighter subset of reg.events.aml, which also covers broader AML/CFT process items (travel rule, suspicious-transaction reporting). English, human-reviewed. Factual reporting only; not legal advice.

Self-regulatory organization segment of Japan regulatory events: JVCEA and JCBA items only. Title + link + own summary (no verbatim excerpts of source headlines). English, human-reviewed. Factual reporting only; 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.

Date-scoped variant of our JP MOF / OFAC address list lookup: returns list status for a chosen date instead of only today, using our own previously-recorded list-change log (same underlying data as sanctions.jp.diff / sanctions.ofac.diff -- no new data source). Each jurisdiction result includes a label describing how the value was derived: observed, inferred, assumed_unchanged, or insufficient_data. Factual reference data only; not legal or investment 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.

Multi-jurisdiction sanctions screening with an explicit audit trail: per-jurisdiction status (JP MOF and OFAC currently available; UK/EU flagged not_yet_available pending license confirmation; UN permanently excluded -- redistribution requires individual UN permission). Staged-release design so the response always discloses exactly what was screened. Factual screening data; not legal advice.

Runs the same substring name search already used by sanctions.uk.check, plus the JP MOF and OFAC name lookups behind sanctions.cross_check, against all three lists in a single call instead of three separate ones. Same underlying data and matching method as those two products -- no new list, no new matching logic. Factual screening data; not legal or compliance 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.

Fuzzy name match against the UK Sanctions List (OFSI): individuals and entities under UK financial sanctions regimes. Source: gov.uk, Open Government Licence v3.0 (Crown copyright, commercial use permitted). No crypto-address field exists in the underlying data, so unlike sanctions.ofac.check this is name-only. Factual screening data; not legal or compliance advice.

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

Estimated Base execution-gas cost of a settlement transaction (e.g. an ERC-3009 transferWithAuthorization), computed from our own current base-fee and ETH/USD observations. Execution gas only -- excludes priority fee and the Base L1 data fee, so treat this as a lower-bound estimate. Useful for micropayment break-even decisions. Descriptive statistics only; not investment advice.