Explore APIs

The EIP-155 chain ID for any supported network via eth_chainId — the read multi-chain agents make to confirm which chain an RPC is on before signing. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free public RPC; 6 chains vs onesource's Ethereum-only coverage. List your own x402 service on bazaar.agentexchange.work/listings: 1 USD, 30 days, live at once, no account.

Token contract facts for agents on Base. Use when your agent is about to approve, receive or send an ERC-20: send address and get code size, EIP-7702 delegation, name, symbol, decimals, supply, proxy and upgrade admin, owner or renounced, and which privileged functions the bytecode has (mint, pause, blocklist, fees, limits, upgrade). Facts only: no grades, not investment advice. Built and run by W

Checks whether a URL/domain is safe to fetch, cite, or follow: flags phantom-squatted or typosquatted brand domains, unregistered or brand-new domains, and known malicious infrastructure (URLhaus). Returns an ALLOW/WARN/BLOCK verdict before your agent trusts the link.

Cross-chain ERC-8004 trust score for one (chain, agent) pair — signed JSON with transparent component breakdown (value_avg / client_breadth / volume / recency), per-chain context, and methodology link. USDC pay-per-call on Base mainnet.

Before your agent trusts, cites, or transacts with a U.S. bank: verify it is actually FDIC-insured, for $0.01, against the FDIC's own BankFind Suite records, synced daily. Look up by institution name (fuzzy, word-order-tolerant, confidence-scored), FDIC certificate number, or website domain. Returns insurance status, charter class, HQ city/state, and the FDIC cert; renamed and failed/inactive inst

Get a client token for direct upload to Vercel Blob

Prüft am Objekt abschnitt den Befund maschinenlesbaren Inhaltstyp.

Store payload to Shared Hold boundary - 0.005 USDC per successful hold

SendCheck: pre-send verification of any EVM address on one chain (EIP-55 checksum, wallet-vs-contract, outgoing activity, balances, verdict). POST {address, chain}

Ranked digest of live paid bounties and earning opportunities for AI agents. Use when an agent needs current, scored opportunities with deadline and links instead of crawling each platform.

SEC company financials by ticker — normalized annual and quarterly revenue, income, balance-sheet, cash-flow and EPS facts.

Search Aggregator fast tier (GET): Serper web search via URL query params ?query=...&max_results=... , fixed price $0.01 USDC. query is required. Mode is fixed by the path.

Fetch a URL and return its text content

Prüft am Objekt cookie den Befund Wert der CSP-Kopfzeile.

Searches the official EU open data portal and returns datasets with what decides whether they are usable: the licence, classified by whether commercial reuse is allowed and what attribution or share-alike it demands. A dataset under a non-commercial licence is marked as unusable for a paid product rather than listd as if equivalent. Each result also carries its publisher, country, last modificatio

Simulate an Ethereum or Base transaction before execution and return an ALLOW, WARN, BLOCK, or INCOMPLETE decision with deterministic risk findings. Supports legacy post-execution inspection via tx_hash and pre-execution simulation via {from, to, value, data}.

CMC regime classification + strategy spec (USDC pay-per-call). Free preview: GET /regime/preview A bad or unsupported id returns 400; upstream failure returns 503; you are never charged for an error.

Generate one or more uniformly-distributed random integers in an inclusive [min, max] range.

Render text (URL, vCard, Wi-Fi config, …) as a QR code — SVG string or PNG data URL.

Serialize a JSON value into a compact MessagePack or CBOR byte stream, returned as a base64 (default), base64url or hex string, along with the byte length.

Least common multiple of two or more positive integers (arbitrary precision).

Returns a per-day download time series for an npm package over a period from keyless api.npmjs.org — the raw signal for trend and growth-rate detection. Lets autonomous agents compute momentum/decline and feed agent-to-agent dependency-selection scoring. Ranking surface for trajectory. First call FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

AI Chat (LLM) embeddings: OpenAI-compatible text embeddings on BGE-M3 (1024 dimensions, multilingual, up to 32 inputs per call).

Resolves a prefix to its announcing autonomous systems and puts that answer in context. The current state gives every origin AS seen for the prefix, the number of more specific and less specific prefixes routed alongside it, when the prefix was first and last seen, and the visibility expressed as the share of observers that see it rather than a raw count, because the raw count moves with the size

Render GitHub-Flavored Markdown to HTML. Output is sanitized by default (scripts, event handlers and javascript: URLs removed); set sanitize=false to keep raw HTML.

Global law search across JP/US/UK/EU legislation databases (e-Gov, eCFR, legislation.gov.uk, EUR-Lex). Structured JSON results with statute references.

Safety Check (TAP Labs (made by TAP)): Token safety and security check for a token on Base or Solana, or a contract on Base, before you buy or swap. Looks for scam and rug pull warning signs: who can mint, freeze, blacklist, pause, tax or upgrade it, thin liquidity, a brand-new pool, big holders (Solana; Base tokens under 5 hours old), unverified code and scam-list matches (Base) and OFAC sanction

Build a valid .ics document from event fields (summary, start/end, location, …).

WHO Global Health Observatory — life expectancy, obesity, alcohol, air pollution by country.

Transcode a document between json, json5, jsonc, yaml, xml, csv, tsv, toml, ndjson, ini, env, properties, plist and querystring. Any source converts to any target through a JSON hub. Malformed input or a target that cannot represent the structure is rejected before payment.