Crypto & Blockchain

Ranked cross-DEX arbitrage spreads across every liquid pair on Polygon PoS (QuickSwap, SushiSwap and Uniswap v3). Returns opportunities[] with pair, grossSpreadBps, buyAt, sellAt, optimalTradeSizeUsd, capturable. GROSS, before gas and MEV. Optional ?minSpreadBps=20 (default 10), minVenueTvlUsd, limit. Send one param: a bare call skips the free tier. Errors: 400 bad_min_spread. Scans EVERY pair; for one known pair use /route. Chain-pinned; bare /scan = BSC.

Per-venue USD liquidity and TVL for a pair on Base across BaseSwap, SushiSwap and Uniswap v3. Returns totalTvlUsd, venueCount, deepestVenue and venues[] with each venue share and reserves. Requires ?pair=SYM/SYM (e.g. WETH/USDC). Errors: 400 bad_pair (malformed, or a ticker unknown on this chain), 404 no_pools, 502 upstream_read_failed. Raw pool numbers are /reserves; a one-word verdict is /risk; price is /price. Chain-pinned; bare /liquidity = BSC.

Fetch current USD price, market capitalization, 24-hour trading volume, 24-hour percentage change, and source update time for up to 20 crypto assets in one call.

Token price history: historical USD price series (price chart data) for one coin/token by coin id (e.g. "coingecko:bitcoin", "ethereum:0xdAC17…"). Returns evenly spaced `points` over the last `span` periods.

Single-call combined pre-trade security check - runs token-risk and contract-health-audit in parallel against the same GoPlus data and returns both, plus a deduped union of risk_flags. No composite score or letter grade is computed - every field is copied unchanged from the two underlying checks. Paid in USDC on Base.

Live status and details of a transaction by hash: success/failed/pending, from/to, value (wei + ether), nonce, block number, gas used, effective gas price and any created contract address. Returns `found:false` for unknown hashes. Reads live on-chain data with automatic endpoint fallback.

Mint a signed JSON Web Token from a JSON claims object, using a shared secret (HS*) or a PEM private key (RS/ES/PS). Supports expiresInSec, notBeforeSec, issuer, audience, subject and keyid. An unusable key or option is rejected before payment.

Validate a blockchain address. Supply `chain` to check against a specific chain, or omit it to auto-detect. Ethereum addresses report their EIP-55 checksum state; Bitcoin covers base58check (P2PKH/P2SH) and bech32/bech32m segwit (P2WPKH/P2WSH/P2TR). A well-formed but invalid address returns `valid:false` — not an error.

Normalise an address to its canonical form — Ethereum to its EIP-55 checksummed form, bech32 Bitcoin to lowercase (base58check is left untouched as it is case-sensitive). An address that is not a valid address of a known chain is rejected before payment.

Apply the EIP-55 mixed-case checksum to an Ethereum address, regardless of its input casing. Returns the checksummed address and whether it differed from the input. Non-hex input is rejected before payment.

Count the LLM tokens in text for a given model or encoding — exact for OpenAI and open models (Llama, Mistral, Qwen, Gemma, DeepSeek, Command-R); labelled-approximate for Claude & Gemini.

Token security / honeypot detector for a Base mainnet ERC-20: EIP-1967/1822 proxy + upgradeability detection, bytecode dispatcher scan for mint/pause/blacklist/fee-setter/ownership selectors, owner() renouncement check, and a live eth_call state-override simulation testing whether a synthetic wallet can actually transfer() the token. Returns risk_score (0-100) + verdict (clear/review/block) + human-readable flags.

DeFi global market overview: total DeFi market cap, ETH ratio, 24h trading volume, DeFi dominance, top DeFi coin via CoinGecko.

Market-share dominance by asset, and how it is shifting.

Chainlink oracle feeds: current answer, decimals and last-update age.

Historical perpetual funding rates, for carry and basis work.

Open/high/low/close series for an asset over a chosen range.

Derivatives venues ranked by open interest and volume.

OHLCV candlesticks at a chosen interval, for any listed pair.

Computes a Flesch reading-ease score, average sentence length, and estimated reading time for any block of text, alongside character, word, and sentence counts. For content QA gates, editorial tooling, and agents that need to confirm text hits a target readability level before publishing.

Registry of tokenized stock and ETF contracts on Robinhood Chain (chain id 4663): 25 verified token addresses with their on-chain price-feed addresses, chain metadata (RPC, explorer, gas token), and source citations for every entry. Read-only public blockchain data — informational only, no trading or brokerage functions.

Curated on-chain registry lookup for Robinhood Chain stock tokens: 20 equities and 5 ETFs with canonical contract addresses sourced from official documentation, plus chain id, public RPC endpoint, and block explorer. Deterministic and cacheable — the same catalog every call until the registry is re-verified.

Contract addresses for tokenized real-world assets on Robinhood Chain, an Arbitrum-Orbit L2 where equities like AAPL, NVDA, and TSLA trade as ERC-20 tokens. Returns address, asset kind, and price-feed reference per symbol so an agent can verify what it is interacting with before touching any contract.

List every verified tokenized equity and ETF contract live on Robinhood Chain — symbol, contract address, and oracle price-feed address per entry, with the official source URL and verification date included for audit. For agents mapping the tokenized real-world-asset landscape.