All projects on Base matching “data”

US macro indicators (CPI, core CPI, unemployment, Fed funds, GDP, 10y/2y yields, M2) with latest value + YoY + recent history, via FRED. ?series=cpi. Public-domain data, 6h cache. Never charged on failure.

Recent transaction history for an address, normalized across Ethereum, Base, Arbitrum, Optimism, Polygon, Bitcoin, and Solana -- direction, counterparty, and value where the chain's data model makes that derivable.

Before your agent negotiates or shares data with another agent, make both prove they qualify. Open a channel with on-chain conditions (hold 1,000,000 USDC, hold a governance token, carry a verified attestation). Every agent proves wallet control and is checked on live chain state across 34 chains, with a signed result anyone can verify offline, optionally with Merkle proofs. Re-check on demand; wh

Pre-payment honesty screen for any x402 endpoint. Run BEFORE paying: probes the target URL unpaid, parses its 402 challenge, cross-checks price against its /.well-known/x402 manifest and the CDP Bazaar listing, and sanity-checks the payTo wallet on-chain. Returns reachable, challenge validity, price, payTo, Bazaar match, risk flags, and a 0-100 honesty score. Public data only; no bulk dataset.

Text Moderation pii: Detect personal data (email, phone, SSN, credit card with Luhn check, IP, IBAN, crypto address, name, address, date of birth, passport) with character offsets; optional redaction to [TYPE].

Read-only Base mainnet data: GET /base/block, /base/tx?hash=, /base/balance?address=, /base/erc20?token=&holder=, /base/gas. Small JSON payloads over a Base node; pay ~$0.002 USDC on Base per call.

Deep verify. Use when a claim is high-stakes, or when Check answer or Extract claims marks it unsure (next_step). Checks it against Wikipedia, Wikidata, Google News, Europe PMC studies, FRED economic data and SEC EDGAR filings, and flags contradiction when sources disagree. Async: returns a job_id; poll GET /v1/jobs/{id} free for verdict, evidence for and against, citations. $0.75 USDC.

OyaPicks: live prediction-market data across Polymarket and Alpha Arcade, including cross-venue arbitrage gaps where the same outcome is priced differently.

Express Entry 2026 category checker — category membership now beats raw CRS (physicians drew at 169 vs CEC 507+). Declares your eligibility across all 10 categories (5 new in 2026, incl. the Canadian-experience trio and CAF recruits), the OBSERVED 2026 cutoff range per category, dormancy warnings (STEM: no draw in 27+ months), and a deterministic strategy read for your CRS. Source-pinned draw data

Ranked reconstitution suggestions for one published reconstitutable compound: bacteriostatic-water presets that put the published per-administration dose range's clean steps on whole U-100 syringe marks, with doses per vial. Refuses period-denominated ranges rather than guessing a frequency. Deterministic math over published reference data -- not medical advice, not a prescription, and for relay t

Read-only EVM state API for wallet snapshots, ERC-20 balances, token allowances, contract code, block heights, and bounded eth_call reads across Ethereum, Base, Arbitrum, Optimism, and Polygon. Fixed price: $0.15 USDC on Base for a batch of up to 100 checks. Only submitted checks run. Results are provider-reported RPC data, not cryptographic proofs.

Get real-time spot price and market data for a cryptocurrency

Read the mandatory public disclosure of one domain and return company, postal address, e-mail, phone, VAT and register data with a source for every value.

WHOIS registration data for a domain: registrar, creation/expiry/updated dates, nameservers, status, DNSSEC, and organisation.

Fetch any public URL and return its content as base64 with the content type and a ready-to-use data URI. Embed images, PDFs and files directly in LLM and API calls without downloading them yourself. Clean JSON.

Real-time Seoul weather — temperature, sky, humidity, wind (KMA official data)

Is this token a scam? Checks any token on Base, Ethereum or BSC and returns a 0-100 safety score, a verdict, red flags (honeypot, hidden fees, owner powers, unlocked liquidity, whale concentration, creator's past honeypots), good signs and a plain-English summary. Data: GoPlus + DexScreener.

List all stablecoins with mcap and peg data

FuelScout cheapest-fuel query (station-level where open data exists, regional averages otherwise)

Crypto market data bundle: BTC/ETH OHLCV candles (Coinbase) with pre-computed EMA10/EMA30, RSI14 and trend/range/chop regime label per request — one call replaces fetch + indicator math.

Checks whether a signature was made by a claimed EVM address: EIP-191 personal_sign messages, EIP-712 typed data or a raw 32-byte digest, verified by ecrecover for wallets or ERC-1271 isValidSignature for smart-contract wallets (Safe, Coinbase Smart Wallet) on Ethereum, Base, Arbitrum, Optimism or Polygon. Returns validity, method, recovered signer and digest. Free sample: https://onchain-health.m

Early-warning system for risk and intelligence agents. Combines GDELT sentiment, World Bank governance data, and open-source intelligence to detect pre-crisis conditions before they break: coups, currency crises, unrest.

Swedish company basics by org.nr. Look up any Swedish organisation by its 10-digit organisationsnummer (e.g. /api/v1/se/company/5567037485 for Spotify AB): registered and trade names, legal form, active status, bankruptcy/liquidation/reconstruction, registered address, SNI 2007 industry codes and activity description. Live from Bolagsverket's official register with SCB business data. No API key —

Screen a supplier list against two registries at once: check up to 100 companies per call, $0.02 per number, and get registration status plus any public-procurement debarment on record. A company can be active and still barred from public contracts, so the summary counts how many are currently debarred. Live Korean National Tax Service and Public Procurement Service data.

x402 API activity stats — top endpoints by paid calls, trend data, and unique payer counts from memoryapi.org nginx logs.

Onchain data router for AI agents. Plain-English → working GraphQL or REST. 15.5K+ subgraphs on 8 chains. Uniswap, Aave, Compound, ENS, Polymarket, Limitless, Predict.fun, ERC-8004 discovery. Identified senders (include `sender` wallet in A2A metadata): 3 free /route /day, then $0.01 USDC via x402 on Base. Anonymous senders pay $0.01 from call 1. /polymarket + /hyperliquid trader-intel paid from c

Home safety lookup for homeowner and safety agents. Returns CPSC hazard and recall data for home products, with fire and electrical risk context.

Everything about a Base transaction in one call: status, time, from and to, ETH value, the function called (for common selectors), the fee split into L2 execution and L1 data in ETH and USD, every ERC-20 transfer with symbol and readable amount, NFT transfers, and x402 payments (USDC transferWithAuthorization) with the seller named from Bazaar.

One RFC 3161 timestamp receipt over a digest you supply. No account and no API key: the response is the whole deliverable. Your data is never sent - only its hash - and nothing about the request is retained here.

Live BTC/ETH/SOL prices + the Crypto Fear & Greed Index in one call. Sourced from CoinGecko and alternative.me public data, combined for convenience.