> ## Documentation Index > Fetch the complete documentation index at: https://docs.provenmetal.com/llms.txt > Use this file to discover all available pages before exploring further. # Check parts > A part list checked for the build quantity, with no files: JLCPCB's stock in about two seconds, then Digi-Key, Mouser, LCSC and Octopart for what JLCPCB lacks. Parts still checking come back with retry_after_s (also the Retry-After header): send the same check again then. 240 an hour per key. ## OpenAPI ````yaml /api-reference/openapi.json post /v1/part-checks openapi: 3.1.0 info: title: ProvenMetal API version: 1.0.0 description: >- Everything the ProvenMetal MCP does, over HTTP with an API key: upload a design, get a live JLCPCB quote and checkout link, follow it to delivery, pay with saved details, and check parts and designs. Formal quotes for any fab or assembler are under Orders. servers: - url: https://api.provenmetal.com security: - ApiKey: [] tags: - name: Uploads - name: Quotes - name: Saved details - name: Checks - name: Buy links - name: Orders - name: Account paths: /v1/part-checks: post: tags: - Checks summary: Check parts description: >- A part list checked for the build quantity, with no files: JLCPCB's stock in about two seconds, then Digi-Key, Mouser, LCSC and Octopart for what JLCPCB lacks. Parts still checking come back with retry_after_s (also the Retry-After header): send the same check again then. 240 an hour per key. operationId: part_check_v1_part_checks_post requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/PartCheckRequest' responses: '200': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/PartCheckReply' '422': description: >- A field was refused, or the design needs an answer first (needs_details...) content: application/json: schema: $ref: '#/components/schemas/ErrorReply' 4XX: content: application/json: schema: $ref: '#/components/schemas/ErrorReply' description: Client Error 5XX: content: application/json: schema: $ref: '#/components/schemas/ErrorReply' description: Server Error components: schemas: PartCheckRequest: properties: boards: type: integer maximum: 100000 minimum: 1 title: Boards description: How many boards will be built. parts: anyOf: - items: $ref: '#/components/schemas/DesignPart' type: array - type: 'null' title: Parts description: >- The BOM lines (at most 300): reference, quantity per board, and mpn with manufacturer, or lcsc, or value with footprint for a resistor, capacitor or inductor. digikey, mouser and description help. bom_csv: anyOf: - type: string - type: 'null' title: Bom Csv description: A BOM file's text, instead of parts. wait_s: type: integer maximum: 50 minimum: 0 title: Wait S description: >- Seconds to wait for the distributors' answer. 0 returns JLCPCB's answer at once (about two seconds); the default covers most boards. default: 20 itar: type: boolean title: Itar description: >- true if the design is ITAR-controlled: it is refused before anything is read. default: false additionalProperties: false type: object required: - boards title: PartCheckRequest description: A part list (or a BOM file's text) and how many boards will be built. PartCheckReply: properties: ok: type: boolean title: Ok phase: type: string enum: - jlcpcb - complete title: Phase description: 'jlcpcb: JLCPCB''s stock only so far; complete: distributors too.' boards: type: integer title: Boards parts: items: additionalProperties: true type: object type: array title: Parts description: >- Each part: reference, part, quantity_per_board, verdict (ok, check, problem, checking), source, jlcpcb_code, jlcpcb_library, supplier, cost_usd (for the whole build), stock, lead_time_days, lifecycle, why, similar_part. summary: additionalProperties: true type: object title: Summary retry_after_s: anyOf: - type: integer - type: 'null' title: Retry After S description: 'Parts still checking: send the same check again then.' additionalProperties: true type: object required: - ok - phase - boards - parts - summary title: PartCheckReply ErrorReply: properties: ok: type: boolean const: false title: Ok default: false error: type: string title: Error description: >- The MCP's error code, for example needs_details, rate_limited or no_files. message: type: string title: Message description: What went wrong and what to do, in words to relay. questions: anyOf: - items: additionalProperties: true type: object type: array - type: 'null' title: Questions description: >- needs_details: each open question with its option, choices and usual answer. Answer them and send the same quote again with those fields. known: anyOf: - additionalProperties: true type: object - type: 'null' title: Known description: 'needs_details: what the files already said.' parts: anyOf: - items: additionalProperties: true type: object type: array - type: 'null' title: Parts description: >- needs_part_numbers (and needs_details): the BOM lines to name exactly. off_board_parts: anyOf: - items: additionalProperties: true type: object type: array - type: 'null' title: Off Board Parts description: BOM lines with no pick-and-place position. retry_after_s: anyOf: - type: integer - type: 'null' title: Retry After S description: 'rate_limited: seconds to wait. Also in the Retry-After header.' checkout_url: anyOf: - type: string - type: 'null' title: Checkout Url description: >- card_declined / authentication_required: where the customer pays instead. fields: anyOf: - items: additionalProperties: type: string type: object type: array - type: 'null' title: Fields description: 'invalid_request: each field that was refused and why.' additionalProperties: true type: object required: - error - message title: ErrorReply DesignPart: properties: reference: type: string title: Reference quantity: type: integer minimum: 1 title: Quantity description: >- Number of this component on ONE board, not the total across the build. For one chip on each of 10 boards, use quantity=1 and boards=10. mpn: type: string title: Mpn description: >- Exact manufacturer part number supplied by the user or BOM. Do not invent or append suffixes. manufacturer: type: string title: Manufacturer lcsc: type: string title: Lcsc digikey: type: string title: Digikey mouser: type: string title: Mouser value: type: string title: Value footprint: type: string title: Footprint description: type: string title: Description additionalProperties: false type: object title: DesignPart description: >- One BOM line of a board being designed: what the schematic or design code says about it. securitySchemes: ApiKey: type: apiKey in: header name: X-API-Key description: >- Your ProvenMetal API key (`pm_live_...`). `Authorization: Bearer ` also works. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.