Onchain & crypto

Top DEX pools (Uniswap, Sushi, Curve, Aerodrome, etc.) ranked by current TVL - filterable by chain and project. Sourced from DeFiLlama's public Yields API (keyless). Each row carries chain, project slug, symbol pair, TVL in USD, current APY, and pool ID for follow-up queries.

OHLCV candles for one perpetual at any interval from 1 minute to 1 month, up to the venue's history, with a window summary of open, close, change, high, low and volume. Use it when an agent needs price history for a chart, a backtest or an indicator without an exchange account or API key.

Historical USD price series for a token, by ticker symbol (ETH, BTC, SOL, ...) or by ERC-20 contract + network, at 5-minute (up to 2 days), hourly (up to 30 days) or daily (up to 365 days) resolution. Returns the points plus first/last/high/low and the percent change over the window - the data behind 'how did this token move over the last N days' without a separate market-data subscription. 404 (not charged) when the token is not in the price feed.

Global DeFi snapshot: DeFi market cap (USD), ETH market cap, DeFi-to-ETH ratio, 24h DeFi trading volume, DeFi dominance % of the whole crypto market, and the top DeFi coin with its share of DeFi. The DeFi companion of crypto-global (whole-market caps and BTC/ETH dominance) and of defi-tvl (locked value, a different measure). Cached in-process for 5 minutes.

Run read-only SQL against Coinbase's indexed, DECODED blockchain data - base.events (decoded logs with parameters), base.transactions, base.blocks, base.decoded_user_operations, base.transaction_attributions (builder codes), plus solana.instructions and hyperevm.events. ClickHouse-dialect SELECTs, server-side grammar validation, up to 50k rows / 30s / 12 joins. Ask Base anything - token flows, event analytics, gas studies - in one call, no indexer to run.

Historical price, market cap, and volume time series for a coin. Granularity is automatic per CoinGecko: <=1 day = 5-min bars, 2-90 days = hourly, >90 days = daily. Days: 1, 7, 14, 30, 90, 180, 365, or "max". Returns aligned arrays of {time, price, marketCap, volume}.

NFT + wallet snapshot: NFT holdings, native balance, and ETH price for a given address in one call. NFT portfolio skill pack: one x402 payment runs 3 underlying tools (nft-holdings, wallet-balance, crypto-price); partial-success per step.

The SEC's bulk Form 13F Data Sets: every quarterly (2013Q2-2023Q4) and rolling three-month (2024-) archive the SEC publishes, newest first, with its window, size and download URL, plus the seven tables each archive carries (SUBMISSION, COVERPAGE, OTHERMANAGER, OTHERMANAGER2, SIGNATURE, SUMMARYPAGE, INFOTABLE) and the readme. Read from sec.gov's own listing, cached 6 hours. Pair with edgar-13f-dataset-head to read a bounded head of one table without downloading the archive.

The issuers behind tokenized real-world assets (Coinbase, Backpack Securities, Ondo, xStocks and the rest): id and name, for rwa-issuer. Cached in-process for 5 minutes.

Every real-world asset with a tokenized onchain version that CoinGecko tracks: stocks, ETFs and commodities, with id, symbol, name and type. Filter by type or a name/symbol substring; ids feed rwa-markets and rwa-asset. Counts by type ride along. Cached in-process for 10 minutes.

How many of one ERC-1155 token id an account holds, read straight from the contract. ERC-1155 is the multi-token standard behind most game items, editions and passes, where a single contract holds many ids and a balance is a quantity rather than ownership of one thing. Returns the balance as a decimal string. EVM chains: ethereum, base, polygon, arbitrum, optimism.

Risk limits and status of ONE builder-deployed perp dex (HIP-3): total open-interest cap, per-perp OI size cap, max transfer notional, the per-coin OI caps, the coins currently AT their OI cap, and the dex's total net deposit. Three keyless reads (perpDexLimits, perpDexStatus, perpsAtOpenInterestCap) in one call.

Blockchains ranked by DeFi total value locked with each chain's share of the total, native token, EVM chain id and CoinGecko id. Use it when an agent is comparing chains by DeFi activity or needs the canonical ids to query other services about a chain.

Current gas price on Base, Polygon, Arbitrum, Optimism, Ethereum, Monad, Celo, Avalanche, Sei, or Robinhood Chain - for an agent budgeting a transaction: returns network, gasPriceGwei and gasPriceWei (decimal strings) from the chain's own eth_gasPrice, the node's suggested all-in price per gas unit. Multiply by the gas a transaction uses (21000 for a plain transfer) for its fee. Read-only.

Generate a single-use Coinbase Onramp URL that lets a human fund any wallet with a card or Apple Pay - the fastest way to put real USDC into an agent's wallet. Returns the ready-to-open URL, and a fee-inclusive quote when Coinbase provides one. Networks: base, ethereum, polygon, arbitrum, optimism, solana.

The chain's pending block: how many transactions are queued for the next block, the base fee they will pay, and the gas already used against the limit. This is the node's own view of what is about to be mined, so it answers "is the chain congested right now" without an indexer. Transaction hashes are included when the node returns them. EVM chains: ethereum, base, polygon, arbitrum, optimism.

Atomically write (or release) a key only if its current value equals `expected` - the coordination primitive for distributed locks and optimistic concurrency across agents. Acquire a lock: expected=null + a value + ttlSeconds. Release it: expected=<your token> with no value (deletes on match). Update safely: expected=<old>, value=<new>. Returns whether it swapped and the current value.

USD price for up to 50 Solana token mints in one call from Jupiter's price API v3: price, 24h change, liquidity, decimals and the block the price was read at. Mints Jupiter does not price come back listed under missing rather than erroring the batch. Pass mint addresses, not tickers (resolve tickers with sol-token-search or sol-token-lookup). Keyless.

Store a secret (API key, webhook payload, signed URL) encrypted with WebCrypto AES-256-GCM and share a claim URL that yields the secret exactly once. A Durable Object serializes reads so single-use delivery is race-free, and every burn returns an Ed25519-signed attestation. Creating a vault requires x402 payment; the recipient's claim read (GET /v/:vault_id) is free.

Real-time crypto sentiment for a ticker symbol (e.g. BTC, ETH, SOL) from 9 crypto news RSS outlets (CoinDesk, Cointelegraph, Decrypt, Bitcoin Magazine, The Block, CryptoSlate, NewsBTC, CryptoPotato, The Defiant) and the Fear & Greed Index. Headlines from the last 72h, weighted toward the newest. Returns a bullish/bearish/neutral label (or 'insufficient recent news'), score, sample size and the top 5 headlines behind it (title, link) as JSON. Path param: symbol, e.g. /sentiment/BTC.

Top DeFi protocols ranked by TVL (total value locked), highest first, source DefiLlama. Optional parameter: ?limit=<n> (1 to 100, default 20).

Top DeFi yield opportunities per chain from DefiLlama — TVL-filtered, outlier-cleaned (unsustainable meme-pool APYs removed), sorted by APY. Fields: project, symbol, apy_pct, apy_base_pct, tvl_usd, stable. Ideal for yield-hunting agents.

Crypto spot prices — Coinbase spot prices for up to ten assets.

Bollinger-Band squeeze detector: is volatility compressing toward a likely expansion? Returns extreme/strong/moderate/none plus bandwidth. Use to anticipate breakouts before they fire. Detects the setup, not the direction.

Total USDC circulating supply (all chains combined), in USD, source DefiLlama. No parameters.

Real-time crypto market news with sentiment analysis and top headlines ranked by importance, for $0.01 per call. One request, no parameters needed — get the latest market-moving stories as structured JSON, ready for trading agents and research pipelines. Relayed live from a proven upstream source; if the source is down you get a 503 and pay nothing. Pay per call in USDC on Base — no account, no API key.

Fetch the verified Solidity source files and compiler metadata for a contract address from an open verified-contract repository. Covers 8 EVM mainnets (ethereum, base, polygon, arbitrum, optimism, bsc, gnosis, celo). Contracts that were never verified return a structured {verified:false} miss, not an error. Feed the returned source into /api/solidity-scan for a heuristic pattern check.

Fetch contract event logs (eth_getLogs) on Ethereum, Base, Polygon, Arbitrum, or Optimism - bounded so it always answers: block range capped at 2000 blocks (default: the last 100, auto-narrowed for busy contracts), at most 200 logs returned (truncated flag set if more matched). Filter by contract address and optional topic0 (event signature hash). Keyless multi-endpoint failover.

The Crypto Fear & Greed index (0–100) with its rating, alongside the US stock Fear & Greed score for comparison, current BTC and ETH prices with 24h change, and ~90 days of crypto sentiment history. Pass `?days=N` to size the history. The crypto-sentiment companion to /api/v1/fear-greed (stocks). From x402stock, a market & economic data API (x402, USDC).

Generate cryptographically random passwords.