> ## Documentation Index > Fetch the complete documentation index at: https://docs.myfundedperpetuals.com/llms.txt > Use this file to discover all available pages before exploring further. # Get an execution quote > Returns the best bid, best ask, and midpoint from a fresh authoritative execution book. Provide both side and size to walk the complete visible execution depth and estimate the fill, notional, and taker fee. The quote escalates to a newer deep book when the ordinary book is too shallow and the venue supports deeper execution data. URL-encode the pipe in a market ID when it is used in the path. ## OpenAPI ````yaml /openapi.yaml get /v1/markets/{market_id}/quote openapi: 3.1.0 info: title: MyFundedPerps API (Beta) version: 1.0.0 description: >- The developer API is in beta. Breaking changes may be introduced at any time. Programmatic access to MyFundedPerps paper-trading challenge accounts. API trades use the same real order books and simulated execution engine as the web trading interface. Every response carries an `X-Request-Id` header for support and log correlation. contact: url: https://myfundedperpetuals.com/support servers: - url: https://developers.myfundedperpetuals.com description: Live - url: https://sandbox.myfundedperpetuals.com description: Sandbox (test keys and sandbox accounts only) security: - bearerAuth: [] tags: - name: General - name: Authentication - name: Accounts - name: Markets - name: Positions - name: Orders - name: Fills - name: Strategy Orders paths: /v1/markets/{market_id}/quote: get: tags: - Markets summary: Get an execution quote description: >- Returns the best bid, best ask, and midpoint from a fresh authoritative execution book. Provide both side and size to walk the complete visible execution depth and estimate the fill, notional, and taker fee. The quote escalates to a newer deep book when the ordinary book is too shallow and the venue supports deeper execution data. URL-encode the pipe in a market ID when it is used in the path. operationId: getMarketQuote parameters: - $ref: '#/components/parameters/MarketId' - name: side in: query description: Order side. Must be provided together with size. schema: type: string enum: - buy - sell - name: size in: query description: >- Base-asset size to walk through the execution book. Must be provided together with side. schema: type: number exclusiveMinimum: 0 responses: '200': description: Current execution quote. content: application/json: schema: type: object required: - data properties: data: $ref: '#/components/schemas/Quote' '401': $ref: '#/components/responses/Unauthorized' '404': $ref: '#/components/responses/NotFound' '429': $ref: '#/components/responses/RateLimited' '503': description: A fresh quote is temporarily unavailable. headers: Retry-After: $ref: '#/components/headers/RetryAfter' content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' components: parameters: MarketId: name: market_id in: path required: true description: URL-encoded market ID, such as `binance%7CBTCUSDT`. schema: type: string schemas: Quote: type: object required: - status - market_id - provider - symbol - coin - bid - ask - mid - time properties: status: type: string const: ok market_id: type: string provider: type: string symbol: type: string coin: type: string bid: type: number ask: type: number mid: type: number time: type: number description: Venue timestamp in milliseconds. fillable: type: boolean description: Present when side and size were supplied. unfillable_reason: type: string enum: - empty_book - insufficient_depth - size_precision_mismatch requested_side: type: string enum: - buy - sell requested_size: type: number estimated_fill_price: type: number description: Volume-weighted average across consumed levels. worst_price: type: number description: Deepest price level consumed. estimated_notional: type: number estimated_fee: type: number fee_bps: type: number levels_consumed: type: integer depth: type: string enum: - standard - deep ErrorEnvelope: type: object required: - error properties: error: $ref: '#/components/schemas/Error' Error: type: object required: - code - message - request_id properties: code: type: string message: type: string request_id: type: string format: uuid details: type: array description: >- Present on request-validation failures, with one entry per invalid field so a request can be fixed in one pass. items: $ref: '#/components/schemas/ValidationIssue' ValidationIssue: type: object required: - field - issue properties: field: type: string description: >- Wire name of the offending request field, such as `size` or `operations[2].price`. The value `body` refers to the whole payload. issue: type: string responses: Unauthorized: description: Missing, invalid, or revoked API key. headers: WWW-Authenticate: schema: type: string X-Request-Id: $ref: '#/components/headers/RequestId' content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' NotFound: description: Resource not found or not owned by the authenticated user. headers: X-Request-Id: $ref: '#/components/headers/RequestId' content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' RateLimited: description: A per-key, per-IP, or deployment request budget is exhausted. headers: Retry-After: $ref: '#/components/headers/RetryAfter' X-Request-Id: $ref: '#/components/headers/RequestId' content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' headers: RetryAfter: description: Seconds to wait before retrying. schema: type: integer minimum: 1 RequestId: description: Stable identifier for support and log correlation. schema: type: string format: uuid securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: MyFundedPerps API key description: >- API key beginning with `fp_live_` (live keys, served at developers.myfundedperpetuals.com) or `fp_test_` (test keys, served at sandbox.myfundedperpetuals.com). A key presented on the other host is rejected with `401` and a message naming the correct host. ````