Browse indexable blockchain and crypto x402 offerings, including provider, method, and service details.
8146 indexable offerings in this category.
EVM Gas Limit Headroom: EVM Gas Limit Headroom calculates gas-limit headroom above an estimated gas amount from bounded caller-supplied values without an external provider. Call EVM Gas Limit Headroo…
EVM Hex Quantity Normalize: EVM Hex Quantity Normalize normalizes an EVM hex quantity without redundant leading zeroes from bounded caller-supplied values without an external provider. Call EVM Hex Q…
Seeded Rendezvous Rank: Seeded Rendezvous Rank ranks nodes for a key using reproducible rendezvous hashing from bounded caller-supplied values without an external provider. Call Seeded Rendezvous Ran…
Pick random items without replacement 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:…
EVM Batch Duplicate Nonce Check: EVM Batch Duplicate Nonce Check finds duplicate nonces inside a caller-supplied transaction batch from bounded caller-supplied values without an external provider. Ca…
EVM Address List Dedupe: EVM Address List Dedupe deduplicates EVM address strings case-insensitively while preserving order from bounded caller-supplied values without an external provider. Call EVM …
Base Settlement Receipt Check: Base Settlement Receipt Check checks caller-supplied receipt chain, status, recipient, and raw amount from bounded caller-supplied values without an external provider. …
Expected impact price from mid and signed slippage fraction. Call when simulating worse fills before sending size. Returns impacted price from mid as deterministic JSON for $0.001 USDC via x402 on Ba…
Base Confirmation Eta: Base Confirmation Eta estimates remaining confirmation time from caller-supplied block cadence from bounded caller-supplied values without an external provider. Call Base Confi…
Base Fee Budget Breakdown: Base Fee Budget Breakdown breaks a Base transaction fee ceiling into gas, priority, and total values from bounded caller-supplied values without an external provider. Call …
Scale human token amounts by decimals into on-chain raw units. Call when building ERC-20 transfer/approve amounts from UI-facing quantities. Returns raw integer string, amount, and decimals used as d…
Check a caller-supplied Base gas price and gas limit against an ETH transaction budget with exact Wei arithmetic. Use with a gas quote supplied by the caller to fail closed before signing. Returns es…
Premium (mark-index)/index in bps. Call when monitoring perp basis without live feeds (caller prices). Returns premium_bps as deterministic JSON for $0.001 USDC via x402 on Base. First-party local ma…
Canonicalize and validate even-length hex strings with optional 0x prefix — call when normalizing even-length hex for chain tooling. Use for chain input hygiene without live RPC—adjacent to OneSource…
Convert gas prices from gwei into wei integer strings for EVM transactions. Call when you hold gas price in gwei and need wei for eth_gasPrice-style fields or tx builders. Returns wei as a decimal in…
EVM Chain Match Check: EVM Chain Match Check compares transaction and expected chain identifiers from bounded caller-supplied values without an external provider. Call EVM Chain Match Check before si…
EVM Gas Cost Ceiling: EVM Gas Cost Ceiling calculates a worst-case native fee from gas limit and fee cap from bounded caller-supplied values without an external provider. Call EVM Gas Cost Ceiling be…
X402 Pay To Match: X402 Pay To Match compares challenge pay-to address with an expected merchant address from bounded caller-supplied values without an external provider. Call X402 Pay To Match befor…
EVM Allowance Budget Check: EVM Allowance Budget Check checks caller-supplied allowance against a required token amount from bounded caller-supplied values without an external provider. Call EVM Allo…
Audit an x402 server for listing readiness, discovery quality, pricing surface, OpenAPI coverage, and integration gaps for $0.01 USDC. Call when you need a preflight report before listing or buying—n…
EVM Approve Amount Check: EVM Approve Amount Check compares a proposed approval with an explicit spending requirement and cap from bounded caller-supplied values without an external provider. Call EV…
EVM Eip1559 Fee Check: EVM Eip1559 Fee Check checks dynamic-fee caps and calculates the worst-case transaction fee from bounded caller-supplied values without an external provider. Call EVM Eip1559 F…
Base USDC Decimal Rounding: Base USDC Decimal Rounding checks whether a decimal USDC amount fits six fractional digits exactly from bounded caller-supplied values without an external provider. Call B…
EVM Slippage Bounds Check: checks expected and minimum output against a maximum slippage policy using only bounded caller-supplied values. Call when you need a bounded evm slippage bounds check resul…