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Look up a Base Mainnet transaction by transaction hash. Return sender, recipient, value, nonce, block, gas fields, and input data when found.

One question, one human answer from judgment or local experience, returned with a signed receipt. $25. Answered at the next 6 PM Pacific review, so within 24 hours.

Email authentication posture for a domain: DMARC + SPF records fetched, parsed, scored 0-100, with findings and fix recommendations.

Use when you need where one NFL team stands relative to the league entering a week. Each of the 44 attributes (passing, rushing, third down, red zone, penalties, touchdowns per drive) carries its value and two percentiles: pct_week against the 32 teams that week, pct_pooled against all 4,320 team-weeks 2016-2025. 1.0 is best for offense and defense; two style measures (time tied, pass share) stay raw. Answers whether a team's pass defense is near the top or bottom of the league. One JSON row.

Use when you need a whole NFL season of matchups with both teams' form entering each week, in one response: every regular-season week from week 5 (13 or 14 weeks) as /slate rows, 44 attributes and 7 counts per team per game plus neutral_site. For backfilling a season or building a season-long dataset without one call per week; join to game results you hold elsewhere, scores are not included. Form is up to each team's last 6 games before that week, never the week's own game. 2016-2025. JSON.

Deep wallet forensic audit — traces transaction history, flags suspicious patterns, identifies scam links and MEV activity. Returns structured risk score with evidence chain. Used by security agents for due diligence.

BUY/AVOID/CAUTION decision for any token. Combines honeypot check, contract risk, liquidity analysis, and holder concentration. Returns structured decision with confidence score and evidence. Deterministic pipeline.

Find Legal Entity Identifiers by legal name, optionally filtered to an ISO 3166-1 alpha-2 country. Returns matching entities with their LEI, verified legal name, registration status, jurisdiction and city/country - the reverse of lookup, for when you have a company name but need its authoritative LEI and legal identity.

Balance and activity for a Bitcoin address (base58 1…/3… or bech32 bc1…): confirmed balance (sats and BTC), total received and sent, confirmed transaction count, and unconfirmed/pending value and tx count from the mempool. On-chain ground truth an agent cannot compute locally.

Reverse-resolve an IPv4 or IPv6 address to its PTR hostname(s). No PTR record returns an empty list. This is reverse DNS (PTR) — not ENS or onchain name resolution.

Live ERC-20 metadata read directly from the contract: name, symbol, decimals and total supply (raw + decimal-formatted). Handles both string and legacy bytes32 name/symbol encodings. Returns `isToken:false` for EOAs or non-token contracts. Reads live on-chain data with automatic endpoint fallback.

Live block summary by number, hex, or tag (latest/earliest/pending/safe/finalized; default latest): number, hash, parent, timestamp (unix + ISO), transaction count, gas used/limit, base fee and miner. Reads live on-chain data with automatic endpoint fallback.

[PerCall] Live quote for a tokenized stock or ETF on Robinhood Chain (AAPL, NVDA, TSLA, etc.): bid, ask, daily high/low, trading volume, mint/burn volume, contract address, halt status. Data sourced live from Robinhood's public stock-token API.

[PerCall] Live USD price and all Uniswap v4 pools for any token on Robinhood Chain, by contract address. Computed chain-natively: v4 Initialize logs + StateView slot0 priced against USDG (Paxos) or ETH, straight from RPC. No third-party API dependency.

[PerCall] Search Uniswap v4 pools on Robinhood Chain by token symbol, name or full contract address. Address queries scan the chain from the DEX deploy block; symbol queries cover recently indexed pools. Prices computed chain-natively from RPC, quoted against USDG or ETH.

Compute the level monthly payment, total paid and total interest of a fully-amortizing loan. Handles a 0% rate. Set schedule=true to also return the full month-by-month amortization table.

Compute the RFC 6902 JSON Patch that transforms `source` into `target`. The patch is a minimal array of add/remove/replace operations.

List every physical constant in the dataset, or only those in a given category (universal, adopted, electromagnetic, atomic, physico-chemical). Returns the constants, the total count and the set of available categories.

Invert a square matrix via Gauss-Jordan elimination. A non-square, ragged or empty matrix is a clean 400. A singular (non-invertible) matrix is NOT an error — it returns a successful { invertible:false, inverse:null }.

Validate a JSON value against a JSON Schema (draft-07, with the standard string formats enabled). An invalid schema is rejected as a clean 400 before payment; a valid schema that the data simply fails to satisfy is a successful result with valid=false and a list of errors (path, keyword, message).

Internal rate of return (per period) of a series of cash flows, solved with a bounded bisection. Requires at least one positive and one negative flow; flows with no sign change or no bracketable root are rejected as a clean 400.

Solve the linear system A·x = b for a square coefficient matrix A and vector b via Gaussian elimination with partial pivoting. A non-square A or a b of the wrong length is a clean 400. A singular system is NOT an error — it returns a successful { solvable:false, solution:null }.

Levenshtein edit distance (insertions, deletions, substitutions) between two strings, plus a normalized similarity in [0,1]. Operates on Unicode code points.

Compute the molar mass (g/mol) of a chemical formula. Supports nested parentheses and brackets, element multipliers, and hydrate dot notation with coefficients (e.g. "Ca(OH)2", "CuSO4·5H2O", "K4[Fe(CN)6]"). Returns the total mass and the per-element composition with mass fraction percentages.