# Chronos API

> Real-time and historical spot market data: tokens, OHLCV candles, trades, discovery boards and live streams.

- [Introduction](https://docs.metastreams.dev/index.md): Spot market data for Solana, Base, BNB Smart Chain and Robinhood Chain: tokens, candles, trades, discovery boards and live streams.
- [Get an API key](https://docs.metastreams.dev/get-started/api-keys.md): How to request a key, how evaluation and production keys differ, and how to rotate or revoke one.
- [Quickstart](https://docs.metastreams.dev/get-started/quickstart.md): Make your first REST request and open your first stream in a few minutes.
- [Authentication](https://docs.metastreams.dev/get-started/authentication.md): Send your key as a bearer token on every REST request and on the stream handshake.
- [Reading responses](https://docs.metastreams.dev/concepts/reading-responses.md): Field names, timestamps, money objects, decimals and percentages across the API.
- [Chains](https://docs.metastreams.dev/concepts/chains.md): The chain slugs the API accepts, and what each chain's native unit is.
- [Errors and retries](https://docs.metastreams.dev/concepts/errors.md): The error envelope, every error code, and which errors to retry.
- [Rate limits and headers](https://docs.metastreams.dev/concepts/rate-limits.md): The limits every key and connection meets, and the headers that report them.
- [Pagination](https://docs.metastreams.dev/concepts/pagination.md): Page through trade lists with an opaque cursor, and through candles with a time window.
- [Filtering and sorting](https://docs.metastreams.dev/concepts/filtering.md): Rank and filter discovery boards, and narrow trade lists by wallet classification.
- [REST reads and their streams](https://docs.metastreams.dev/concepts/rest-and-streams.md): Which stream replaces polling which endpoint, and how to combine a snapshot with live updates.
- [Versioning and compatibility](https://docs.metastreams.dev/concepts/versioning.md): What can change within v1, what never does, and how to write a client that keeps working.
- [Connecting to streams](https://docs.metastreams.dev/streams/overview.md): Open a WebSocket, subscribe to channels, and reconnect after a close.
- [Build a token page](https://docs.metastreams.dev/recipes/token-page.md): Show a token's price, stats, holders, security and live trades, kept current by streams.
- [Render a live chart](https://docs.metastreams.dev/recipes/live-chart.md): Load candle history, then keep the last candle moving with the candles stream.
- [Build a discovery board](https://docs.metastreams.dev/recipes/discovery-board.md): Show new, graduating and graduated launchpad tokens in three filtered, ranked columns.
- [Follow KOL trades](https://docs.metastreams.dev/recipes/kol-trades.md): Show a live feed of trades by known KOL wallets across every chain.
- [Migrating from Mobula](https://docs.metastreams.dev/resources/migrate-from-mobula.md): Map Mobula's spot endpoints, streams and token fields to their equivalents here.
- [Glossary](https://docs.metastreams.dev/resources/glossary.md): What each wallet classification, holder group and launchpad term means.
- [Changelog](https://docs.metastreams.dev/resources/changelog.md): Changes to the API, newest first.
- [Support](https://docs.metastreams.dev/resources/support.md): How to reach us, and what to include so we can help fast.
- [Token details](https://docs.metastreams.dev/reference/rest/token-details.md): Read one token's price, market cap, liquidity, windowed stats, holders, security and launch data.
- [OHLCV candles](https://docs.metastreams.dev/reference/rest/token-ohlcv.md): Read one token's candle series at any timeframe, priced or by market cap.
- [Token trades](https://docs.metastreams.dev/reference/rest/token-trades.md): Page through one token's executed trades, newest first, narrowed by trader or wallet classification.
- [Identity trades](https://docs.metastreams.dev/reference/rest/identity-trades.md): Page through trades by notable wallets across every chain and token.
- [Discovery boards](https://docs.metastreams.dev/reference/rest/discovery.md): Rank launchpad tokens by launch stage, across one or more chains, in a single request.
- [spot.trades](https://docs.metastreams.dev/reference/streams/spot-trades.md): Every trade on a token, by a wallet, or by a notable identity, as it happens.
- [spot.candles](https://docs.metastreams.dev/reference/streams/spot-candles.md): One token's candles at one timeframe, metric and denomination, as they form.
- [spot.tokens](https://docs.metastreams.dev/reference/streams/spot-tokens.md): The full token object, every time it changes.


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