FRED series metadata x402 REST usage
Metadata for a FRED series: title, frequency, units, seasonal adjustment, observation date range, and popularity. Use before /api/fred-series to confirm the series fits your needs.
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Metadata for a FRED series: title, frequency, units, seasonal adjustment, observation date range, and popularity. Use before /api/fred-series to confirm the series fits your needs.
Decompress a base64-encoded gzip payload. Returns the result as utf8 (text) or base64 (binary). Refuses to expand past 10MB to defend against zip bombs.
Decompress a base64-encoded Brotli payload. Returns the result as utf8 (text) or base64 (binary). Refuses to expand past 10MB to defend against zip bombs.
USD price for up to 50 Solana token mints in one call from a Solana DEX aggregator's price API: price, 24h change, liquidity, decimals and the block the price was read at. Mints the aggregator does not price come back li...
Search autocomplete: query suggestions for a partial input as a flat JSON array. Useful for query expansion, did-you-mean refinement, and topic exploration. Returns up to 20 suggestions.
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 char...
Percentage helper. op: "of" (a% of b), "change" (% change a→b), "ratio" (a is what % of b).
NHTSA safety recalls for a vehicle by make/model/year: campaign number, affected component, summary, consequence, and remedy. Live gov data, no key.
Validate an ISBN-10 or ISBN-13 checksum (hyphens/spaces ignored) and report which format it is.
Parse iCalendar (.ics) text into structured JSON events: summary, start/end, location, organizer, attendees, status, and RRULE. Optional bounded recurrence expansion (expand:true, capped occurrences). Deterministic, pure...
Search US federal election candidates via the FEC: name, party, office (House/Senate/President), state, incumbent/challenger status, and FEC candidate ID. Live gov data.
Compress a string with gzip (RFC 1952) and return it as base64. Reports input bytes, output bytes, and the compression ratio so you can decide if it was worth doing. Input can be plain text (utf8) or already-binary conte...
Convert between Unix epoch timestamps and ISO 8601 date strings in both directions. Provide either an epoch (seconds or milliseconds) or an ISO date string. Returns both representations plus UTC and date components.
Search FDA medical-device recall / enforcement records (openFDA): recalling firm, classification (Class I/II/III), reason, distribution, and dates. Live FDA data, no key.
Count characters, words, lines, and (optionally) occurrences of a substring in text.
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 answ...
48-hour hourly weather forecast for any location: temperature, precipitation probability and amount, wind, cloud cover, humidity. No key, global.
7-day daily weather forecast for any location: high/low temp, precipitation sum and probability, max wind, UV index, sunrise/sunset. No key, global.
Most recent total US public debt outstanding (the headline national-debt number, daily) from the Treasury "Debt to the Penny" feed. Public domain, no key. No params.
Daily total stablecoin supply in USD over time, for all chains or one chain, per peg currency, with a window summary. Use it when an agent wants stablecoin supply as a liquidity or risk-appetite signal or needs the histo...
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...
One options instrument live: mark, last, bid and ask with sizes, index price, open interest, mark, bid and ask implied volatility and the full greeks (delta, gamma, vega, theta, rho). Use it when an agent holds or is quo...
Latest US Consumer Price Index year-over-year inflation rate (headline CPI-U) plus the trailing 12 months of YoY readings - the headline inflation number. A month with no published value is listed in missingDates rather...
Escape hatch for power users: forward an arbitrary read-only JSON-RPC method to the chain. Method must be in our read-only whitelist (eth_call, eth_getLogs, eth_getBlockByNumber, eth_getTransactionReceipt, eth_chainId, e...
Fetch and parse a DKIM public-key record at <selector>._domainkey.<domain> (RFC 6376). Returns the parsed key params (algorithm, length, flags) so you can verify rotation status or key strength. Caller must know the sele...
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 que...
Coin categories (Layer 1, Meme, AI, DeFi, Stablecoins, RWA, ...) ranked by market cap, with 24h market cap change %, 24h volume and the top-3 coins per category. Order by market_cap_desc (default), market_cap_asc, market...
Search public Certificate Transparency logs for every cert issued to a domain. Two independent public CT search services are queried, the second only if the first is slow or fails, and `source` names the one that answere...
Find Solana tokens and pairs by name, ticker or address across every DEX a public pair index covers, filtered to Solana only, in the index's relevance order: base and quote token, mint addresses, DEX, price, liquidity, 2...
Validate a JSON document against a JSON Schema (draft-07 subset) and get the list of violations. Supports type, required, properties, items, enum, const, min/max, length, pattern, format, anyOf/allOf/oneOf/not, additiona...
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