the402 x402 endpoint directory

US sales tax — add or remove tax using the verified 2026 STATE base rate for any state + DC, plus an optional local ra

Break-even units and revenue (CVP): where contribution margin covers fixed costs.

2026 IRA / Roth contribution limit for your situation — including the Roth MAGI phase-out and traditional-deduction ph

401(k) contribution vs the 2026 limits (incl. age 50+ and 60–63 catch-ups) plus the employer match, capped at the §415

Self-employment (SE) tax on Schedule C net profit — Social Security to the 2026 $184,500 wage base, Medicare, Addition

Rank up to 10 stablecoin/yield options by projected return over a horizon at each stated APY.

Liquidation price for a leveraged long or short (isolated margin), plus the % move to liquidation.

Impermanent loss for a 50/50 constant-product LP position vs simply holding, given the price change of the volatile as

Self-employed mortgage affordability: 2-year income averaging with add-backs, the declining-income rule, front/back DT

Get Smart Money Perpetual Trades Data

Get Perpetual Trading Leaderboard Data

Lithium Research Vault - full structured JSON for any lithium / battery-metals producer or DFS-stage developer, by com

Bitcoin block info by height or hash. Returns hash, height, timestamp, tx count, total fees, miner pool ID, size, weig

Top Solana DEX liquidity pools across Raydium, Orca, Meteora and others. Token pair, TVL USD, 24h volume, fee tier, cu

Get Historical (Time-Travel) Transaction Lookup Data (Beta)

Get historical "Token God Mode" (TGM) token flow summary (Beta)

Get historical "Token God Mode" (TGM) token OHLCV (Beta)

Real-time Bitcoin BTC spot price in USDT from Binance. AI agent price feed, low-latency crypto quote, market data API,

Research OHLCV candle forecast via Kronos-mini (financial K-line foundation model). Not financial advice. Symbols BTCU

Verified smart contract metadata on Base mainnet by address. Returns contract name, compiler version, ABI, implementat

Cosmos chain info for Hub, Noble, Osmosis, Juno, Stride and any Cosmos SDK chain. Current block height, latest block t

Newly created Python PEPs and PEP status transitions (Draft→Accepted→Final) since a timestamp, with type, authors, and

AI & automated-systems governance regulatory & enforcement changes since a timestamp, merged from the Federal Register

consumer data privacy regulatory & enforcement changes since a timestamp, merged from the Federal Register, FTC enforc

AI daily market briefing — one structured JSON summary of stocks, crypto, DeFi, and macro indicators for the day, with

Bitcoin recommended fees real-time from mempool. sat/vByte tiers: fastest, half-hour, hour, economy, minimum. Includes

Current FX rates for up to 30 currency pairs in one call with last-update date. USD EUR GBP JPY CHF AUD CAD CNY plus E

New GitHub releases from a curated set of DevOps / cloud-native infrastructure projects since a timestamp, with versio

New GitHub releases from a curated set of AI/ML framework & tooling projects since a timestamp, with version, notes, a

Current top Hacker News stories with score, comment count, author, and link — a real-time pulse of what the tech commu

New weekly US diesel price data points since a timestamp (US Energy Information Administration), each with the $/gal v

New weekly US regular gasoline price data points since a timestamp (US Energy Information Administration), each with t

New data prints of 30-year fixed mortgage rate since a timestamp (US Federal Reserve / FRED), with each % value and it

New data prints of 10-year Treasury yield since a timestamp (US Federal Reserve / FRED), with each % value and its obs

New data prints of effective federal funds rate since a timestamp (US Federal Reserve / FRED), with each % value and i

New Bureau of Labor Statistics prints of total nonfarm payroll employment, with the value, period, and month-over-mont

Federal Register final & proposed rules affecting industrial chemicals under TSCA (Environmental Protection Agency) si

Get "Token God Mode" (TGM) PnL leaderboard data

Base L2 EVM token safety verifier: simulates buy/sell, transfer taxes, honeypot checks, proxy resolution, and liquidit

SEC EDGAR 8-K filings matching auditor / accountant changes since a timestamp — company name, CIK, form, filing date,

SEC EDGAR 8-K filings matching material definitive agreements since a timestamp — company name, CIK, form, filing date

New Bureau of Labor Statistics prints of PPI final demand (producer prices), with the value, period, and month-over-mo

New Bureau of Labor Statistics prints of US unemployment rate, with the value, period, and month-over-month change.

New Bureau of Labor Statistics prints of core CPI (less food & energy), with the value, period, and month-over-month c

New Bureau of Labor Statistics prints of CPI-U (all items, inflation), with the value, period, and month-over-month ch

New US Treasury average interest rate on Treasury securities data points published since a timestamp, with the value a

New US Treasury total US public debt data points published since a timestamp, with the value and record date.

SEC EDGAR 10-K,10-Q filings matching going-concern warnings since a timestamp — company name, CIK, form, filing date,

SEC EDGAR S-1 filings matching IPO registration statements since a timestamp — company name, CIK, form, filing date, a

SEC EDGAR 8-K filings matching cybersecurity-incident disclosures since a timestamp — company name, CIK, form, filing