Browse indexable blockchain and crypto x402 offerings, including provider, method, and service details.
8146 indexable offerings in this category.
Pay-per-Attestation: an AI agent pays to seal its own decision (input hash, output, model, timestamp) in FractalAI's post-quantum L1 — Dilithium-3 (NIST FIPS 204) signed, Black-Box chained; on-chain anchoring (VAID-1) is attempted per call and reported in the response. Returns a re-verifiable receipt. Built for EU AI Act Art.12 record-keeping. x402-native.
Post-quantum ML-DSA-65 receipt for an on-chain LatAm stablecoin transfer
Signed attestation of an Aave V3 position's liquidation risk right now: health factor, debt, collateral, risk tier and the observation time, read live from public RPCs by the FractalAI MIDAS scanner …
Post-quantum ML-DSA-65 receipt for an on-chain LatAm stablecoin transfer
Pay-per-Attestation: an AI agent pays to seal its own decision (input hash, output, model, timestamp) in FractalAI's post-quantum L1 — Dilithium-3 (NIST FIPS 204) signed, Black-Box chained; on-chain …
Binance OHLCV candles for a symbol (e.g. BTCUSDT). Query: ?interval=1h&limit=1-1000. Source: Binance public API (free).
All DeFi yield pools (APY / TVL) across chains. Source: DeFiLlama public API (free).
🆕 Cross-chain inflow detection. Reads a wallet's recent USDC MINTS and correlates them with Circle CCTP receives to tell you whether its USDC is freshly bridged in (and from which source chain — Ethereum, Arbitrum, OP, Polygon, Solana…) vs natively issued. Freshly bridged capital is new money / a possible cross-chain hop — a real signal for trading and liquidation agents that no other Base tool surfaces. wallet= required, days= optional (default 30, max 90). Not financial advice.
Returns the newest tokens minted on a blockchain, sorted by mint timestamp and filterable by activity window and optional category (e.g., 'virtuals').
Real-time USD-denominated cryptocurrency prices from the FTSO Yggdrassil value provider, covering all supported assets in a single snapshot
AI agents on Arc: search paid x402 APIs, ERC-8004 reputation, Argus launch data paid in USDC.
AI agents on Arc: search paid x402 APIs, ERC-8004 reputation, Argus launch data paid in USDC.
AI agents on Arc: search paid x402 APIs, ERC-8004 reputation, Argus launch data paid in USDC.
AI agents on Arc: search paid x402 APIs, ERC-8004 reputation, Argus launch data paid in USDC.
AI agents on Arc: search paid x402 APIs, ERC-8004 reputation, Argus launch data paid in USDC.
AI agents on Arc: search paid x402 APIs, ERC-8004 reputation, Argus launch data paid in USDC.
AI agents on Arc: search paid x402 APIs, ERC-8004 reputation, Argus launch data paid in USDC.
Fuci on Arc, read from the chain: every Uniswap v4 pool paired with the REAL $FUCI (0xE66d...4420) with its class (launch = created through Fuci's launchpad; dynamic; high-fixed-fee = a fixed fee of 10% or more on every trade; fixed-fee), fee, hook, creator route, creation time and live liquidity and price; every $FUCI burn (transfers to 0x...dEaD, summed and checked against dEaD's balance) with the days that had one, testing Fuci's claim that fees burn $FUCI every day; and every token that…
Complete ERC-20 portfolio for a Base address — every non-zero token with balance, metadata and live USD value, plus a total. Token discovery via CDP Data API (Coinbase) with Alchemy fallback; USD from DexScreener.
Solidity function selector and event topic: compute the Keccak-256 hash of a function or event signature and derive the 4-byte selector and the 32-byte topic. Normalises the signature first — strips parameter names, expands uint to uint256 and the other aliases, flattens tuples — so a signature copied from source code produces the same selector as the canonical form. Also hashes arbitrary text or hex bytes with Keccak-256.
Resolve a 4-byte function selector or a 32-byte event topic hash to its known human-readable Solidity signatures, via the openchain.xyz signature database with 4byte.directory as fallback. Unknown selectors return {found:false} with an empty list, not an error.
first-funder goes one hop; this walks the funding chain back up to 8 hops to a recognisable origin (a CEX/bridge on-ramp — lower-risk provenance) OR a SANCTIONED address (dirty money, taint by provenance) OR a dead-end of fresh anon EOAs (the sybil/burner-cluster shape). One verdict compliance can refuse on. Best-effort: internal-transfer funding is invisible and ends the walk, never guessed. A CEX origin is a signal, not identity. Not financial advice.
Fund tracing for AML and source of funds: follow crypto funds upstream over multiple hops to see whether they touched sanctioned, hacked or scam sources.
Quarter-over-quarter 13-F changes for one tracked fund: new buys, exits, increases, decreases, position deltas, and fund-side Form 4 smart-money updates.