# Mecone - [Mecone Documentation](https://docs.mecone.trade/index.md): The settlement oracle for real-world assets - [What is Mecone](https://docs.mecone.trade/introduction.md): Prediction-market-implied settlement indices - [For Venues](https://docs.mecone.trade/for-venues.md): The settlement layer for derivatives on illiquid assets - [The Terminal](https://docs.mecone.trade/terminal.md): The live window into every public Mecone index - [FAQ](https://docs.mecone.trade/faq.md): Common questions about Mecone - [The Flagship Indices](https://docs.mecone.trade/indices/overview.md): Eight live indices across macro, pre-IPO, and GPU rentals - [How an Index Is Built](https://docs.mecone.trade/indices/how-they-work.md): From bets to a benchmark in four steps - [Consuming the Feeds](https://docs.mecone.trade/oracle/overview.md): Signed official rounds over REST, on-chain, or an adapter - [Signed Official Rounds](https://docs.mecone.trade/oracle/signed-rounds.md): Immutable, chain-independent settlement records, verifiable offline - [Testnet Quickstart (Arbitrum Sepolia)](https://docs.mecone.trade/oracle/testnet.md): Index → signed oracle → on-chain settlement, end to end - [API Guide](https://docs.mecone.trade/api-reference.md): The versioned public API: resources, envelopes, keys, and conventions - [API Problem Types](https://docs.mecone.trade/problems.md): RFC 9457 problem documents returned by the versioned API - [Discover the Mecone public API](https://docs.mecone.trade/api-reference/public-index-api-v1/discover-the-mecone-public-api.md) - [Discover the Mecone public API](https://docs.mecone.trade/api-reference/public-index-api-v1/discover-the-mecone-public-api-1.md) - [List public indices](https://docs.mecone.trade/api-reference/public-index-api-v1/list-public-indices.md) - [Get index metadata](https://docs.mecone.trade/api-reference/public-index-api-v1/get-index-metadata.md) - [Get latest live snapshot](https://docs.mecone.trade/api-reference/public-index-api-v1/get-latest-live-snapshot.md) - [Get latest official API round](https://docs.mecone.trade/api-reference/public-index-api-v1/get-latest-official-api-round.md): Returns only a canonical committed API round and fails closed when one is unavailable. It does not claim on-chain confirmation. - [Get latest probability distribution](https://docs.mecone.trade/api-reference/public-index-api-v1/get-latest-probability-distribution.md) - [Get trailing index statistics](https://docs.mecone.trade/api-reference/public-index-api-v1/get-trailing-index-statistics.md): Returns gated 30-print daily volatility, annualized volatility using the common calendar-day convention, and a trailing 12-month level range. The resource uses exact finalized New York daily stored observations, never the filtered chart series. - [Get six New York daily reference closes](https://docs.mecone.trade/api-reference/public-index-api-v1/get-six-new-york-daily-reference-closes.md): Returns six derived daily API reference closes. Each response discloses whether rows came from provenance-bearing committed rounds or unverified legacy chart history. Values are not settlement-eligible and do not assert on-chain confirmation. - [Get dated news and context items for an index](https://docs.mecone.trade/api-reference/public-index-api-v1/get-dated-news-and-context-items-for-an-index.md): Newest-first news and context items about one index from licence-labelled sources: official releases and statements, public filings, the source venue's own market context, and headline-plus-link editorial references. Each item states its `kind`, `relevance` (`direct` = about the index's own release/… - [Get stored index history](https://docs.mecone.trade/api-reference/public-index-api-v1/get-stored-index-history.md): The immutable stored tick series behind the charts, served as OHLC buckets over the requested window: `range` is `1d`, `1w`, `1m`, `6m`, `1y` or `all` (default `1m`); `resolution` is `auto` (the default) or an explicit bucket size — a combination finer than the range supports is a `400` `unsupported… - [Discover the prediction-market data lake](https://docs.mecone.trade/api-reference/public-lake-api-v1/discover-the-prediction-market-data-lake.md): Which venues this API serves, which are deliberately excluded and why, and the semantics a consumer has to carry to read the tape correctly. - [List the venues served from the lake](https://docs.mecone.trade/api-reference/public-lake-api-v1/list-the-venues-served-from-the-lake.md): Per venue: tape origin, which quote columns it populates, whether it has a book at all, its collection cadence, and its coverage. Only allow-listed venues appear. - [Get one venue's tape semantics and collected days](https://docs.mecone.trade/api-reference/public-lake-api-v1/get-one-venues-tape-semantics-and-collected-days.md) - [List the snapshot times collected for one venue-day](https://docs.mecone.trade/api-reference/public-lake-api-v1/list-the-snapshot-times-collected-for-one-venue-day.md): `at` is the object key's `HHMM`, which is the CYCLE START and not the response time. A snapshot above the render ceiling is listed with its measured size and no quotes link. - [Get the normalized quote rows of one snapshot](https://docs.mecone.trade/api-reference/public-lake-api-v1/get-the-normalized-quote-rows-of-one-snapshot.md): One (snapshot, market, outcome) row per entry, produced by the lake's own normalizer. bid and ask are null when the venue did not quote that side; mid and spread are absent unless both sides were quoted on a venue that has a two-sided book. ## OpenAPI Specs - [openapi](https://api.mecone.trade/api/v1/openapi.json) ## Optional - [Terminal](https://terminal.mecone.trade)