All projects on Base

YouTube transcript and video search API for AI agents: retrieve timestamped transcript segments by video ID or find videos by keyword. Returns JSON transcripts with text, start and duration, or video search results for content research and summarization. Provided by FastAF YouTube Transcript & Metadata. Price: $0.001000 USDC per successful call.

Queries current temperature, wind speed, and weather codes from the public Open-Meteo API.

Is this x402 endpoint safe to pay? Check it before your AI agent pays an endpoint it has not used before. Returns a go / caution / no_go verdict, the recommended payment option (network and amount) and the reasons (payment would fail, payout address on the OFAC sanctions list, over your budget, price above advertised, not HTTPS, unknown token). Never pays the endpoint. Cached 10 min. Bulk: 1000 cr

XML tier (deterministic, no LLM): verifies a claimed value lives at a named path in a public XML document, by independent double re-fetch. Use it for feeds and sitemaps; for JSON use /verify-json, for HTML use /verify. Paths address elements and @attributes (urlset.url[0].loc). String-exact; ambiguous or volatile values return unverifiable, never a guess. First 100 checks per client are free: rese

UK Stamp Duty Land Tax (SDLT) calculator with first-time buyer relief and surcharges.

Official National Bank of Ukraine (NBU) exchange rates of the hryvnia (UAH) on a date: 40+ currencies, gold, silver and SDR, with English names. Call it when you need the legally official UAH rate for Ukrainian accounting, tax, invoices or customs, or to convert to/from UAH on a given date. Params: date (YYYY-MM-DD, default today in Kyiv), currency (ISO code, optional; omit for all).

Returns personalized greeting - UPDATED SCHEMA v2

Structured JSON from any webpage. Name the fields you want — company data, job listings, product specs, contact details, financial figures — and get them back with confidence scores. No scraper configuration needed.

Website HTTP and metadata inspection report

Live crypto prices: USD spot for BTC, ETH and SOL in one call, fetched per call (not cached), so the figure is the number right now. A cheap, high-frequency data lane for x402 buyers budgeting in the unit they pay with. Sourced from public feeds (Coingecko primary, Kraken fallback).

Screens a person or business name, or an NPI, against the HHS-OIG exclusion list (LEIE, Medicare and Medicaid): potential matches only, each with name score, reasons, NPI, state, specialty, exclusion type and date. Not a determination: confirm a match on the OIG online search with the SSN or EIN. Empty candidates is a paid 200. Not for employment or credit decisions. List dates and code meanings:

Observe public DNS, TLS and baseline response headers through HTTPS HEAD / on port443; no full-path scan or global trust assessment.

French address geocoding on the official Base Adresse Nationale (api-adresse.data.gouv.fr, Etalab/IGN, continuously updated). Forward: ?q=8 boulevard du port amiens with optional &type=housenumber|street|locality|municipality &citycode=80021 (INSEE filter). Reverse: ?lat=49.897&lon=2.290. &limit=1-10 (default 3). Each match returns normalized label, confidence score, lat/lon, street, postcode, cit

Screen any person or company against the US Treasury OFAC sanctions lists — SDN and Consolidated, primary names plus every recorded alias, 39,000 names in total. Handles the 'LAST, First' convention OFAC uses, strips legal suffixes so Ltd and Limited match, and returns exact, strong and possible hits with the sanctions programmes attached. Tuned to over-report rather than miss. Returns the list bu

Smart contract security check before you approve or pay an address: reads the bytecode, behind proxies too, for privileged functions (mint, pause, blacklist, upgrade), dangerous opcodes and protocol type, and checks whether a single key holds those powers. Adds OFAC SDN screening, who funded the address, sybil-filtered ERC-8004 reputation for agents and a 0-100 score with proceed / hold / block. S

Monitor a company or vendor for sanctions, SEC filing, legal-entity, and domain-registration changes. Compare current authoritative evidence with an earlier paid report or a supplied date and receive a structured, citation-first change summary with severity, timestamps, source URLs, confidence, and disclosed gaps. Designed for continuous vendor due diligence; it is not a legal or compliance determ

Anchor an AI agent decision or audit record to Base mainnet. Submit {schema, payload_hash (SHA-256 hex, 64 chars), metadata}; service queues into a Merkle batch and returns a receipt with pending_anchor status immediately. Full Merkle proof and on-chain anchor_tx available via free GET /v1/notarize/:receipt_id after batch anchors (within batch_threshold receipts or 120s). Include Idempotency-Key h

A stateful, multi-chain spending session for AI agents. One session enforces a hard USDC budget cap across every tool call, with a verifiable receipt and running ledger for each payment — not a one-shot budget check, but persistent spend governance with a full audit trail. The gateway enforces the cap for the paying wallet on Stacks and Base. USDC on Base (standard x402) or Stellar (via the AgentP

Live feed of every active rail disruption across the Japanese (JP) network in one call — delays and suspensions with bilingual summaries, refreshed continuously from ODPT. Built for MONITORING agents: poll on an interval (e.g. every 5 minutes) to maintain a nationwide incident watchlist without querying stations one by one.

Screen an EVM wallet or contract address BEFORE paying it. Deterministic, keyless compliance / safety gate: checks the address against the OFAC sanctioned crypto-address list and a curated taint set (mixer, hack, scam) and returns a single BLOCK / REVIEW / ALLOW recommendation plus the matched sources, so an AI agent can decide whether to send funds. No API keys, no LLM, one x402 USDC micropayment

Per-call counterparty lookup. Pass ?ua=<counterparty-UA>. Returns ONE signed row: has_record (yes/no), payment-attached count, settlement count, class, verdict (known_payer | probe_only | low_signal | unknown), with Ed25519 attestation. Pay $0.01 USDC on Base or Solana per call. Call it before every transaction to check if a counterparty has ever paid at this merchant seat. Wallet-based lookup (?w

High-speed single-pass state machine microservice that deterministically repairs cut-off and truncated JSON streams from LLMs (e.g., max_tokens cut-offs or live SSE chunks). Automatically closes unterminated strings, completes partial literals (tru/fals/nul) and numbers, resolves dangling keys/colons, strips markdown fences, and balances nested containers in LIFO stack order with optional progress

Lead verify for one NL or BE sales lead: is it a real, active company? Checks the KVK or KBO register and cross-checks what the lead holds: VAT with VIES, mail server and disposable domain, IBAN country and bank (not the holder), and the company name against the OFAC, EU and UN sanctions lists. Returns a verdict, a 0-100 lead score and flags, each with one action. An input not given is not checked

Curated reading list on QE for tutoring agents, quiz generators, and reading apps — 168 public-domain books (e.g. A Study of Recent Earthquakes, The chemistry, properties and tests of precious stones, Field book of common rocks and minerals : $b for identifying the rocks and minerals of the United States and interpreting their origins and meanings). Full-text retrieval with drill-down routes for c

NFT metadata for ERC-721 and ERC-1155 tokens on Base, Polygon, Arbitrum, Optimism and Ethereum. Resolves tokenURI through IPFS, Arweave, data: URIs and public HTTPS, and returns the parsed metadata JSON.

What can the owner of this Base contract do? Returns the admin selectors found and how many were not scanned. targetAddress required. Answered inline, no polling, with the Base block and hash it was read at. A first read of an address can take up to 60s: keep the connection open. Valid 600s. Payment implies a request for immediate execution. Terms (0x2134019c6388d3c598b4e33a69416a364cccccea4735ebc

Historical fiat exchange rates for a given date (YYYY-MM-DD, back to 1999-01-04) and base currency; optionally restrict to specific targets.

Inspect any media file and get its technical metadata. Container, duration, codecs, DISPLAY dimensions and rotation, frame rate, HDR, audio channels and sample rate, in a normalized summary plus the full raw analysis (JSON, XML, CSV, flat or INI). Provide a source URL or upload the file directly; the result is downloadable for 24 hours. A file that cannot be decoded still answers with the diagnosi

Current UK weekly average road fuel price (petrol + diesel, pence/litre), sourced live from DESNZ (UK gov)