Every agent-payable API.

OpenAI's own transcription wire: POST multipart/form-data with a `file` part and get the transcript back. Point any Whisper-shaped SDK at this gateway and pay per call with USDC, no account and no API key. Same model and same four-minute cap as /api/transcribe, which takes a URL instead of an upload; /v1/pro/audio/transcriptions takes it to ten minutes.

OpenAI's transcription wire on the ten-minute tier: POST multipart/form-data with a `file` part. Same model as /v1/audio/transcriptions with a longer cap, for a recording a four-minute route refuses.

Takes an audio or video file and changes its tempo by a factor from 0.5 (half speed) to 2.0 (double speed) while keeping the pitch, using the Rubber Band time-stretching library through ffmpeg — good for faster listening, language learning at reduced speed, or fitting a voice-over into a slot. The new running time is measured and returned. All timestamps of the original scale by 1/factor. Runs locally with ffmpeg; nothing leaves this machine and nothing is stored.

Spell text using the NATO/ICAO phonetic alphabet (A→Alfa, B→Bravo, …), including digits and spaces (→Space). Characters with no phonetic spelling are clean 400s.

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

Spend preflight for AI agents. Send the x402 PaymentRequired body (v1 or v2) you received, or a cart, plus optional rules (per-payment max, hold threshold, daily cap, allowlists, new-domain days). Returns allow|hold|block with reasons, the cheapest acceptable payment option, and a receipt id. Read-only: never signs, settles, or holds funds. Use before every payment.

SpendPreflight — trust and verification tools for stablecoin payments, built for AI agents and the people who run them. Base contract signals, not a safety verdict. Basic: bytecode/OFAC. Deep adds owner, paused, supply/decimals, proxy slots, minimal-proxy target and bounded source/deployment evidence. Honeypot/sellability, mint/blacklist powers, liquidity locks, holders and scam lists are unassessed. Missing data stays unknown; never safe-to-buy. Informational, not financial advice.

Eight lines on one contract before money moves: exit amount, yield split, audit links, incident note, admin, age, holder concentration, and governance. Unknown stays unknown. No score.

Sanctions/scam screening verdict for one address (?address=, optional ?network=mainnet|testnet) plus whether it is a verified token contract STB recognises. The same screen that gates every send in the STB wallet.

0-100 safety score with components (protocol trust, TVL depth, audits, track record), observed and risk-adjusted APR, and whether STB's Auto-Defense would exit — for every vetted stablecoin vault, or one by ?venue=<id|pool address>.

Official $0.01 proof-of-life resource for SpendTheBits x402: returns a JSON heartbeat. Pay it to verify your agent's x402 client end to end.

SpendPreflight — trust and verification tools for stablecoin payments, built for AI agents and the people who run them. Verify a native Base USDC transfer by tx_hash (optional log_index), or exact pay_to + decimal amount + past start/end (max 90 days). Ambiguous matches fail without charge. Signed observation, OFAC flags, confirmations and printable HTML. Not invoice ownership or finality proof.

SpendPreflight — trust and verification tools for stablecoin payments, built for AI agents and the people who run them. Export native Base USDC wallet transfers as JSON or CSV for a past range up to 90 days, start inclusive/end exclusive. Exact decimal running balances, counterparties and OFAC flags. Up to 1000 transfers/128 RPC calls/25 seconds; oversized or unavailable historical data fails without charge. Informational, not tax advice.

Split calldata into its selector and 32-byte words — Genesis402 / UnyKorn Operator Network

Split a USDC payment across up to 20 agent wallets

Split the input into parts on each match of a RE2 pattern. An optional limit caps the number of parts (0 = unlimited). Returns the parts array and its count.

Split a list of names into a given number of random, evenly sized teams. Use for games, workshops and classrooms.

Spoken edition of Confidence Game. Humans listen free at /read/confidence-game.

Spoken edition of River of Time as MP3.

Spoken edition of The Last Witness as MP3.

Spoken edition of Thermodynamic Proof as MP3.

Spoken edition of Untamed Wilderness as MP3.

How much visa-sponsorship data is on file? Headline aggregates over DOL OFLC disclosure data: distinct sponsoring employers, LCA and PERM case totals with certified counts, and the fiscal years covered.

Get normalized sports schedules, live or recent scores, matchup status, teams, venue and a concise game brief for NBA, NFL, MLB and English Premier League (EPL). Filter by league, date and optional team name or abbreviation. Use for NBA scores, NFL games, MLB scores, EPL fixtures, today's games, schedules and AI sports research.

Calibrated 1X2 probabilities plus derived markets (totals, BTTS, correct score) for every upcoming fixture across the big-five European leagues. Backed by a public, Brier-scored track record.

Spot token prices from DefiLlama — pass comma-separated CoinGecko ids, get price/change_24h/symbol/confidence/timestamp.

Live SOL prices across top 5 CEXs + top 5 Solana DEXs with widest spread

Curve slopes 2s10s and 3m10y in bp for US, euro area and Morocco with inversion flags, plus cross-market 10Y spreads (US-EA, MA-US, MA-EA).

Convert between a spreadsheet column letter and its 1-based index in either direction. Provide exactly one of `letter` (e.g. "AA") or `number` (e.g. 27); the response always contains both.

Build an A1-style cell reference from 1-based row and column numbers, optionally marking the row and/or column absolute ($).

Parse an A1-style cell reference (e.g. "B3" or "$AA$100") into 1-based row and column numbers, plus the column letters and whether each part is absolute.

SqueezeOS — Api Ftd Series Gme

Short-squeeze setup signal for a stock (?ticker=<stock ticker>)

Call when an agent has an 18-digit SSCC and needs the GS1 check digit. Does not confirm the logistic unit.

TLS handshake for host[:port]; notBefore/notAfter, SANs, issuer, serial, days-left. Fail closed.

Bulk domain availability for up to 100 names in one call, with USDC registration prices and buy links.

Drop alert for one domain: we POST to your webhook (or email you) when it becomes registrable. No account needed.

Domain Drop Radar full dataset: every expiring, pending-delete and just-dropped domain matching your filters (up to 1000 per call) with quality score, archive history, backlink and parking/spam signals. Registrable with USDC/USDT at stabledomains.net.

Expiring, pending-delete and just-dropped domains with backlink authority (Majestic referring subnets), Wayback archive history and brandability score. Registrable with USDC at stabledomains.net.

AI-agent domain name generator: turns a product idea into up to 50 brandable, registrar-verified AVAILABLE domains with USD price and a one-call checkout (pay in USDC/USDT).

Buy domain: domain registration paid in USDC via x402. Registers a domain name. POST {domain, years}; the 402 quotes the exact live price for that name. Premium or taken names are refused before payment.

Domain valuation estimate (USD range) from length, TLD, dictionary words, brandability, archive age and backlinks, plus live availability and register price.

Single-stable deep dive (e.g. USDC, USDe, DAI)

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Get flights from one airport to another specific destination airport

Search for flights with position data

Retrieve flight-level trip details and booking links for a Seats.aero availability ID.