Heuristic content-type sniff from sample bytes or filename. Call when you need this bounded result before handing data to a downstream tool. Returns deterministic machine-readable JSON for $0.001 USDC via x402 on Base. Honest limit: execution uses only caller-supplied data in memory; it does not call a paid upstream, retain input, search the web, read a live RPC, or invoke a media generator. Results are advisory; the caller owns authorization, budgets, and production controls.

Look up supported blockchain network metadata and chain IDs for $0.001 USDC. Static first-party registry only—no live RPC, balances, blocks, receipts, gas, or contract reads. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.

UUID generator API for agents: generate one to ten UUIDv4 identifiers for $0.001 USDC. Call when you need correlation ids, idempotency keys, or object slugs without an ID service. Local first-party CSPRNG only—not a sorted ULID clock and not a reserved namespace. No API key, no subscription.

Calculate a bounded exponential backoff schedule for reliable autonomous retries. Use it before an autonomous workflow acts on untrusted input, changes an API, retries a request, or evaluates production reliability. Returns bounded machine-readable JSON for $0.002 USDC via x402 on Base or Solana. Execution is deterministic, first-party, local-only, stateless, and does not call an upstream provider; structured validation failures are not billed.

Current UTC unix time. Use for idempotency stamps, expiring links, or clock skew checks. Returns unix seconds, millis, and ISO UTC from the server clock. $0.001 USDC per successful call via x402 on Base or Solana—first-party JSON from Delx (fresh each call; not a deterministic transform), no API key, no subscription, and nothing is billed on structured validation errors.

Time-sortable IDs. Use when you want roughly time-ordered IDs for logs or event streams without a DB sequence. Returns a compact time-sortable id (KSUID-inspired, not a full KSUID library claim). $0.001 USDC per successful call via x402 on Base or Solana—first-party JSON from Delx (fresh each call; not a deterministic transform), no API key, no subscription, and nothing is billed on structured validation errors.

Look up a common MIME type from extension/filename for $0.001 USDC. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.

Look up HTTP status-code meanings for $0.001 USDC or retrieve the common-code reference. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.

Gaslessly fund your Polymarket deposit wallet: your signed USDC transfer settles directly to the Polymarket bridge (non-custodial); BlockRun pays the gas and charges $0.0110.

Cloudflare Evidence Check — Judges whether a check someone ran on a Cloudflare-hosted site really proves what they claim, and answers as JSON with a verdict, the reason and the one check that would decide. Knows the instruments that answer for the wrong thing - the command-line object read that serves a cached copy after a delete, a delivery log that records neither test mail, a zero-row log search that looks the same as code that never ran, a local migration run, a staging secret, the free pre…

Search bounded Wikidata entity metadata for $0.001 USDC. Returns stable IDs, labels, descriptions and source links for public places, companies and concepts—not geocoding, navigation, contact data, personal profiling or general web search.

GPT pricing table: what every GPT model costs per token right now — GPT-5, GPT-5 mini, GPT-4o, GPT-4.1, o3 — from OpenAI and every provider that resells or hosts them (Bedrock, Azure, Vertex, OpenRouter, Fireworks). Input, output, cache and batch USD per 1M tokens, sorted cheapest first, so you can compare GPT inference cost across hosts and pick the cheapest place to run one. Normalized, cross-checked, refreshed hourly.

Search 75,000+ public-domain books on Project Gutenberg by title or author

Public-domain poems by author, title words or words in a line, with every line

Track a flight or aircraft by callsign, ICAO hex or registration - live position, type, owner and route

Who represents a U.S. street address - congressional district, senators, House member and state legislators

Search HCPCS Level II medical billing codes (CMS) by description words or code prefix

Postal code lookup worldwide - place name, state or region and coordinates for a ZIP code in any country

Nobel Prize laureates by name, year or category - prizes, motivation, share and affiliations

U.S. federal lobbying disclosures by client, firm or issue - amounts, filing period and lobbyists