> ## Documentation Index > Fetch the complete documentation index at: https://docs.rekt.money/llms.txt > Use this file to discover all available pages before exploring further. # Health and limits > How fresh the archive is, and the limits that apply to your requests. Start here. Read the limits from `access`. ## OpenAPI ````yaml /openapi/data-api.json get /v0/health openapi: 3.1.0 info: title: Rekt data API version: '0' summary: Read-only HTTP API for settled trades and ended positions. description: >- `https://data.rekt.trading` serves settled trades and ended positions. It is read-only and it needs no account. It sets no cookies and accepts no credentials. Responses carry `Access-Control-Allow-Origin: *`. Start at `GET /v0/health`. The program is the ground of truth. This API is a lagging mirror of it. Read live state from the chain through the SDK. Rules: - Every route answers `GET`, `HEAD` and `OPTIONS`. Any other method gets `405`. - A request URL is at most 2,048 characters. A longer one gets `414`. - Requests are rate-limited for each client address. `GET /v0/health` states the limit under `access`. A request over it gets `429` and a `Retry-After` header. Wait that long, then retry. - This API ignores a parameter that it does not know. A filter that this API refuses gets `400`. - Money amounts are decimal strings of base units of USDC (6 decimals). Addresses are 64 hex characters unless a field says base58. Transaction signatures are base58. - A response can hold fields that this description does not list. Ignore a field that you do not know. servers: - url: https://data.rekt.trading description: The data API. security: [] tags: - name: Health description: Freshness and limits. - name: Aggregates description: All-time totals and day series. - name: Trades description: Settled trades of the last 48 hours. - name: Positions description: Ended positions of the last 48 hours. - name: Minute description: Minute rounds of the last 48 hours. paths: /v0/health: get: tags: - Health summary: Health and limits description: >- How fresh the archive is, and the limits that apply to your requests. Start here. Read the limits from `access`. operationId: getHealth responses: '200': description: The health of the archive and the limits of the caller. headers: Cache-Control: description: '`public, max-age=10`.' schema: type: string Warning: description: >- Present only when `asOf.stale` is true. It states that the archive is stale. schema: type: string content: application/json: schema: $ref: '#/components/schemas/HealthResponse' '414': $ref: '#/components/responses/UriTooLong' '429': $ref: '#/components/responses/TooManyRequests' '500': $ref: '#/components/responses/ServerError' components: schemas: HealthResponse: type: object description: How fresh the archive is, and the limits that apply to the caller. properties: ok: type: boolean description: True when the server answers. program: type: string description: The program id that this API mirrors, in base58. groundOfTruth: type: string description: >- A statement, in words: the program is the ground of truth, and this API is a lagging mirror of it. asOf: $ref: '#/components/schemas/AsOf' era: $ref: '#/components/schemas/Era' access: type: object description: The limits that apply to the caller. Read the limits from here. properties: tier: type: string description: >- The access tier of the caller. It is `public` for a caller without a key. enum: - public perTransactionWindowHours: type: - integer - 'null' description: 'The window of the per-transaction routes. Unit: hours.' pageMax: type: object description: The largest page size. properties: trades: type: integer description: >- The largest page of `/v0/trades` and `/v0/positions`. Unit: rows. minuteRounds: type: integer description: 'The largest page of `/v0/minute/rounds`. Unit: rounds.' requestsPerMinute: type: - integer - 'null' description: >- The number of requests that one client address can send each minute. Unit: requests per minute. burst: type: - integer - 'null' description: >- The number of requests that one client address can send at one time. Unit: requests. aggregates: type: array items: type: string description: The routes that keep the whole history. routes: type: array items: type: string description: The routes that this API serves to the caller. required: - ok - program - groundOfTruth - asOf - era - access - routes AsOf: type: object description: How fresh the archive is at the time of this response. properties: generatedAt: type: string description: The time the server made this response, in UTC (ISO 8601). format: date-time archiveTailSlot: type: - integer - 'null' description: >- The slot of the newest transaction in the archive. Unit: slots. Null when the archive is empty. archiveTailAt: type: - string - 'null' description: >- The block time of the newest transaction in the archive, in UTC (ISO 8601). Null when the archive is empty. format: date-time stale: type: boolean description: >- True when the archive has not moved for longer than its freshness limit. The server still sends a stale response, with a `Warning` header. staleReason: type: - string - 'null' description: Why the archive is stale, in words. Null when `stale` is false. entryFeeBasis: type: string description: >- How the entry fees in the rows were found. `observed` means each fee is the fee that the trade paid. Only the routes whose rows carry an entry fee send this field. enum: - observed required: - generatedAt - archiveTailSlot - archiveTailAt - stale - staleReason Era: type: object description: The first slot that this API counts. properties: firstSlot: type: integer description: >- Settlements before this slot belong to a different program id. No route counts them. Unit: slots. required: - firstSlot Error: type: object description: A refused request. properties: error: type: string description: What is wrong, in words. retryAfterSeconds: type: integer description: 'On `429` only: wait this long, then retry. Unit: seconds.' routes: type: array items: type: string description: 'On `404` for an unknown route only: the routes that this API serves.' required: - error responses: UriTooLong: description: The request URL is longer than 2,048 characters. Shorten it. content: application/json: schema: $ref: '#/components/schemas/Error' TooManyRequests: description: >- Too many requests. Wait `Retry-After` seconds, then retry. `GET /v0/health` states the limit under `access`. headers: Retry-After: description: 'Wait this long before you retry. Unit: seconds.' schema: type: integer content: application/json: schema: $ref: '#/components/schemas/Error' ServerError: description: The server could not answer. Retry later. content: application/json: schema: $ref: '#/components/schemas/Error' ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.