> ## Documentation Index > Fetch the complete documentation index at: https://catchbackcards.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Find a card by cert > **Scope:** `read:catalog` Looks a graded slab up by the cert number on its label, optionally for one grader: every CatchBack card carrying that cert, normally one. Watches, goods and singles carry no cert. Cached for up to a minute. ## OpenAPI ````yaml /partner-api/openapi.yaml get /api/partner/v1/cards openapi: 3.1.0 info: title: CatchBack Partner API version: 1.0.0 summary: Open packs, trade cards, read card data and ship vaulted cards. description: >- The Partner API acts on one CatchBack account with its real CatchCoins balance. Several operations here move money or data, so read [Idempotency](/partner-api/idempotency) before you call them. Error bodies are JSON with a human-readable `error` and, where you might branch on it, a machine-readable `code`. Branch on the status and the `code`, because the `error` text can change. New fields can be added to any response. contact: name: CatchBack support email: catchbackcards@gmail.com servers: - url: https://catchbackcards.com description: Production. Every call acts on real money and real inventory. security: - bearerAuth: [] tags: - name: Gacha description: Open packs, see what they can pull, check a pull, and sell cards back. - name: Marketplace description: Search and buy cards, and manage your own listings. - name: Metadata description: Look cards up by id or cert, with price history and recent activity. - name: Shipping description: Estimate, create and track shipments of cards you hold. - name: Account description: Your key, balance, limits, vault and order history, across every rail. - name: Funding description: Deposit and withdraw your balance in USDC. - name: Testing description: Test logins for trying CatchBack without real money. - name: Webhooks description: Signed POSTs we send to your URL when something happens on your account. paths: /api/partner/v1/cards: get: tags: - Metadata summary: Find a card by cert description: >- **Scope:** `read:catalog` Looks a graded slab up by the cert number on its label, optionally for one grader: every CatchBack card carrying that cert, normally one. Watches, goods and singles carry no cert. Cached for up to a minute. operationId: findCardByCert parameters: - name: cert in: query required: true description: The cert number, exactly as on the slab. schema: type: string pattern: ^[A-Za-z0-9-]{4,24}$ example: '84512377' - name: grading_company in: query description: 2–10 letters, e.g. `PSA`, `CGC` or `BGS`. Case doesn't matter. schema: type: string pattern: ^[A-Za-z]{2,10}$ example: PSA responses: '200': description: The cards carrying this cert. content: application/json: schema: type: object required: - cert - grading_company - cards properties: cert: type: string grading_company: type: - string - 'null' description: What you sent, in upper case, or `null`. cards: type: array items: $ref: '#/components/schemas/Card' example: cert: '84512377' grading_company: PSA cards: - id: 0e94dc61-… category: pokemon name: Charizard ex set: Pokemon Sv3 En-Obsidian Flames grading_company: PSA grading_rank: 10 slab_label: 2023 Obsidian Flames Charizard ex language: english cert_number: '84512377' market_value: 410 front_image: https://…/0e94dc61-….png back_image: https://…/0e94dc61-…-back.png render_image: https://…/0e94dc61-…-render.png image_url: https://…/0e94dc61-…-render.png '400': description: >- A missing or malformed `cert`, or a `grading_company` that isn't letters. content: application/json: schema: $ref: '#/components/schemas/Error' '401': $ref: '#/components/responses/Unauthorized' '403': description: The key lacks `read:catalog`. content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: >- No CatchBack card carries this cert, from that grader if you sent one. The body echoes `cert` and `grading_company`. content: application/json: schema: allOf: - $ref: '#/components/schemas/Error' - type: object properties: cert: type: string grading_company: type: - string - 'null' example: error: No card with that cert cert: '84512377' grading_company: PSA '500': $ref: '#/components/responses/ServerError' security: - bearerAuth: - read:catalog components: schemas: Card: type: object description: >- The [card object](/partner-api/card-object). Other fields appear only on the catalogs that have them. required: - id - category - name - set - grading_company - grading_rank - slab_label - language - market_value - cert_number - front_image - back_image - render_image - image_url properties: id: type: string description: The card's id. category: $ref: '#/components/schemas/CardCategory' name: type: - string - 'null' set: type: - string - 'null' year: type: - string - 'null' number: type: - string - 'null' variant: type: - string - 'null' rarity: type: - string - 'null' description: Printed rarity. card_type: type: - string - 'null' language: type: - string - 'null' slab_label: type: - string - 'null' description: The text on the grading label. grading_company: type: - string - 'null' grading_rank: type: - number - 'null' description: The grade. cert_number: type: - string - 'null' description: The grading company's certificate number. card_condition: type: - string - 'null' market_value: type: number description: Our current market valuation in USD. `0` when we have no valuation. price: type: - number - 'null' description: The shop sale price in USD. market_value_last_updated: type: - string - 'null' front_image: type: - string - 'null' back_image: type: - string - 'null' render_image: type: - string - 'null' image_url: type: - string - 'null' description: '`render_image`, or `front_image` when there is no render.' sport: type: - string - 'null' player_name: type: - string - 'null' team: type: - string - 'null' manufacturer: type: - string - 'null' parallel: type: - string - 'null' is_rookie: type: - boolean - 'null' is_autograph: type: - boolean - 'null' is_memorabilia: type: - boolean - 'null' serial_numbered: type: - string - 'null' brand: type: - string - 'null' reference_number: type: - string - 'null' video_url: type: - string - 'null' condition: type: - string - 'null' size: type: - string - 'null' description: type: - string - 'null' attributes: type: - object - 'null' description: Luxury goods only. Key-value details that vary by item. additionalProperties: true Error: type: object required: - error properties: error: type: string description: >- For people. The text can change, so branch on the status and the `code`. code: type: string description: Machine-readable, where you might branch on it. CardCategory: type: string description: A card's catalog. `goods` is luxury goods and `singles` is raw singles. enum: - pokemon - onepiece - sports - riftbound - watches - goods - singles responses: Unauthorized: description: A missing, malformed, disabled or unknown API key. content: application/json: schema: $ref: '#/components/schemas/Error' example: error: Missing or malformed API key ServerError: description: An error on our side. Retry with backoff. content: application/json: schema: $ref: '#/components/schemas/Error' securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: cb_live_<48 hex> description: >- Your API key, sent as a bearer token. Keep it on your server. See [Authentication](/partner-api/authentication). A request from a location we refuse gets a `403` with `Access denied`, whether or not it has a valid key: [where you can call from](/partner-api/errors-and-limits#where-you-can-call-from). ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.