All projects

Search the James B. Pollack music catalog by mood, BPM, key, year, or similarity

Give this API a loan amount, an interest rate, and a repayment term, and it returns the exact monthly payment plus a full month-by-month schedule: interest paid, principal repaid, and balance remaining for every payment. Ask what an extra $300 a month, or a $10,000 lump sum in month 24, would do and it reports the months and interest saved. Every figure uses banker's rounding at pinned precision,

Current USD price, market cap, 24h volume and 24h change for up to 10 cryptocurrencies by ticker symbol (BTC, ETH, SOL, ...) or for any on-chain token by contract address and chain (ethereum, base, bsc, arbitrum, polygon, optimism, avalanche, solana). Data from CoinGecko.

Sugar reference price (currently follows futures; no CIV farmgate floor).

Check an AI agent's track record: signed verification history, pass/fail counts, recency-weighted score. $0.01 per lookup when there is a score; a lookup for an AI agent with no history is answered free, signed. USDC via x402 v2 (Base/Solana).

Detect whether an arbitrage opportunity exists in a set of token exchange rates (multi-pool negative-cycle scan). Cheap boolean + magnitude signal for trading agents. POST a swap-rate graph, get back whether a profitable cycle exists and how large — without the path.

Pay $0.01 USDC to make an outbound HTTP request through the proxy. Supports all standard HTTP methods, custom headers (including auth), and JSON or raw bodies. Responses are returned as text or base64-encoded binary. Max response size 10 MB, timeout 30s. Each request performs one upstream fetch and returns the final URL plus response metadata.

获取任意位置的天气

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

Convert and compress images to WebP, AVIF, JPEG or PNG. Optimize and shrink photos for web and CDN delivery from any image URL.

Search Paul Graham's source corpus — a source-grounded persona of the Y Combinator co-founder and essayist, built from 13,000+ cited sources: his complete essays, talks, interviews, and X posts — by semantic + lexical query and retrieve grounded packets (graded claims, quotes, evidence with citations). POST a JSON body { query, limit? (<=100), packetTypes? }. Flat micro-price per query.

Paid verification layer for autonomous AI agents. Verify claims before decisions using web evidence and source-backed analysis

Flight search by departure and arrival airports in the URL — compare live itineraries, fares, schedules, stops and emissions across airlines, similar to Google Flights, as clean JSON.

Pre-execution decision for a metered search or browse tool call. Evaluates the proposal; does not execute the external tool.

Large on-chain transaction monitor — whale movements on Base, Ethereum, and Robinhood Chain with AI pattern analysis

Verified inference (Prova). OpenAI-compatible chat completions run inside a TEE (NVIDIA + Intel), hardware-attested, and anchored on Solana — every response returns an on-chain proof + Solscan link. Select a model via the body `model` field; price varies by tier (standard/premium/flagship).

Alpha signals ahead of the wider press, with the quorum on the story when one exists.

Turn a full recording into a structured document: POST JSON with an audio_url — up to 2 HOURS of meeting, interview, hearing, or podcast audio — and get a diarized who-said-what transcript JSON: timestamps, speaker tracking with per-segment confidence, language codes. Most transcription APIs cap at ~20 minutes; this one runs Gemini long-context, built for the long ones. mp3, wav, m4a, ogg, webm, f

One answer from a text model, for one question. The free floor does not run a model and does not return this answer.

Parse a document (json, json5, jsonc, yaml, xml, csv, tsv, toml, ndjson, ini, env, properties, plist or querystring) and validate it against a JSON Schema. Returns whether it is valid and a list of precise, path-tagged errors. Malformed input or an invalid schema is rejected before payment.

Track a website's AI search visibility every week for 4 weeks. $19 USDC on Base per call. Runs the 16-engine report now, then each Monday until 4 successful runs. Returns a private tracking_url with a trend chart and competitor shifts, plus emails. Settles only if the first run succeeds (12+ of 16 engines). Don't use this for a single snapshot; use /api/v1/report.

x402 Barter — deposit your half of an accepted trade into escrow. Send deal_id, side ('give' or 'want') and the payload itself; the payload is hashed so either party can prove later what was delivered. Returns the deal status, whether both sides have now delivered, and the release state of the escrow. Nothing but the flat call fee is charged — the goods, not USDC, are what trade here.

Plexa /v1/pretrade/check — pre-trade token safety check on Base: can you still sell this token? avoid fires only on a trap proven on-chain now: no pool to exit into, an exit pot under 5% of your size, or the trading gate off (the honeypot shape). A drained pot is what a rug leaves behind — measured, not predicted. clear = no provable trap, NOT safe. risk_profile: token age, holder concentration, l

Momus on Robinhood Chain: his full written read on a tennis match priced on Meridian Predict (the on-chain prediction venue on Robinhood Chain) — his chance vs the Meridian blind-auction price, the edge, the call (position / would-bet / pass) and the tennis context (form, head-to-head, surface, books); for positions the payout multiple and the return as % of stake. q = player, match or tournament;

Generate a random string of a given length from a named charset (alphanumeric, alpha, lower, upper, numeric, hex, base58) or a custom alphabet. Unbiased character selection.

Compute sunrise, sunset, solar noon and day length for a latitude/longitude (east-positive) and date, using the NOAA sunrise equation. All times are UTC ISO-8601. Locations in polar day or night return null rise/set with a `polar` flag — a successful result, not an error.

Register an AI agent for a Brazilian company: agent key (EVM address or Web Bot Auth Ed25519 key), CNPJ and a mandate (JSON, validated against /.well-known/kya-mandate.schema.json). Returns a one-time challenge the agent signs with its key and the company signs with its e-CNPJ (CMS/PKCS#7). Price covers the checks at issuance.

Convert a decimal string to an exact reduced fraction. For a repeating decimal, set repeat to the number of trailing fractional digits that repeat (e.g. value='0.1666', repeat=1 → 1/6; value='0.3', repeat=1 → 1/3). A non-numeric value is a clean 400.

Pay-per-call cited research brief. The request carries a query and 1 to 12 quotes with source URLs; the response is a short brief that cites only those quotes, at 0.008 USDC per call on Base. Payment settles after the brief is produced. A client nonce header makes a retry free of a second charge.

CMS detection confidence audit fetches current public evidence from the supplied target and evaluates the documented criterion. It returns the observation, threshold, verdict, exact evidence source, limitations and a mode-specific action. The check is passive: no login attempt, payload injection, exploit, purchase, form submission or load test is performed.