All services

Color conversion API: any hex or rgb() color to hex, RGB, and HSL plus is-it-dark detection and the accessible text color (black or white) to place on top of it. For theming, chart, and design-generation agents. Instant, computed locally.

Number facts API: everything mathematically interesting about any integer — is it prime, its prime factorization, Fibonacci membership, perfect-square status, even/odd, binary and hexadecimal forms, Roman numeral, and digit sum. Computed locally, deterministic, instant. For quiz agents, content generation, validation, and the incurably curious.

Returns demand depth for one category: probe volume, distinct sources, buyer-class share, probed price points, and a daily time series. Use it to validate pricing before launching in that category.

CVE lookup

Summarized depth, spread, and 24h volume profile for one market — Execution-quality summary per venue: depth within 1c/5c of the touch, spread in cents, and an hourly 24h volume profile. Pass notional_usd for a slippage estimate. Derived analytics only — raw order books are never mirrored.

Get departure flights for a specific airport

Get disruption counts for a specific entity

Get departure flights for a specific airport

Get arrival flights for a specific airport

Activate an accepted directory listing — one-time x402 listing fee, then your endpoint is live in the curated DE/EU marketplace

Crypto off-ramp API entry point: sell USDC or other stablecoin and cash out to a bank account in 80+ currencies. Alias of /quote. Pass targetCurrency (ISO 4217) and sourceAmount (USD) to get an FX quote, fees, the fiat amount the recipient receives, and a quoteId to lock the rate. Start here to convert crypto to fiat, then use /requirements, /recipients, /transfer, and /confirm-transfer to complete the bank payout. Pay 0.01 USDC.

Validate an IBAN and check whether a bank account number is valid. Verifies the ISO 13616 MOD-97 checksum, structure and country length against the IBAN registry, and returns validity, the country, the BBAN and a formatted IBAN. Instant, deterministic bank account number validation and verification for any European or international IBAN.

Daily EUR foreign-exchange reference rates (source: European Central Bank). Returns the latest ECB reference rate for any supported currency vs EUR, plus cross-rate conversion between two non-EUR currencies.

Deep dive into large wallet accumulation patterns with net capital flows and top holders.

[SIGNAL+PROOF+CHATTER] One official signal record with its offline-recomputable proof, PLUS the unverified public-channel chatter for a topic from the last 48h - delivered as two separate top-level keys that are never merged. The unverified half lives in its own database with an engine-level trigger forbidding updates, and contributes nothing to the official hash. Nothing posted in the window -> 422 no_charge, not billed (check GET /shadow/catalog first, free).

Text to speech, TTS, voice generation, and speech synthesis for agents. Generate low-cost inline WAV audio with 10 standard voices, 31 languages, and up to 500 chars for $0.001.

Returns a list of recently merged PRs across Anthropic/Claude repos (title, author, merge date, labels) with per-repo counts — track new Claude Code and SDK capabilities as they ship.

Firecrawl v2 API proxy — monitor/create. JSON body matches https://docs.firecrawl.dev/api-reference/v2-introduction. Poll GET routes are free; POST/PUT/DELETE are x402. $0.026 USDC per request.

Higher-quality chat on Llama 3.1 8B Instruct Fast (@cf/meta/llama-3.1-8b-instruct-fast). POST messages[]; suited for reasoning-heavy turns with dynamic token pricing.

Open-web search — one x402 POST discovers SERP candidates, ranks with BGE embeddings, optional page snippets. $0.370 USDC per request. Pseudo-Exa via headless browser + semantic rank. Agent search: web search, exa, firecrawl, serp, semantic search.

The analyst desk's current thesis and conviction on one crypto asset — house view with confidence from tracked insight threads (?asset=BTC). Descriptive research, not financial advice.

Retrieve brand information using a company name. This endpoint searches for the company by name and returns its brand data.

Returns a simplified version of brand data containing only essential information: domain, title, colors, logos, and backdrops. This endpoint is optimized for faster responses and reduced data transfer.

NYC HPD violations address check: is this property licensed / HPD-registered, and are there open Housing Maintenance Code violations? Property due diligence agent for New York City multi-dwelling housing compliance open data. GET ?address= (house + street, optional borough) → registration window, BIN/block/lot, recent HMC violations JSON. Tenant screening, landlord DD.