> ## Documentation Index > Fetch the complete documentation index at: https://docs.getmillwork.dev/llms.txt > Use this file to discover all available pages before exploring further. # Register output check > Register a verifier. ## OpenAPI ````yaml /openapi/solverapi.openapi.json post /v1/verifiers openapi: 3.1.0 info: description: >- Run approved AI models under data, cost, and time limits. A cost limit can stop another provider call after recorded spend reaches the limit; it cannot reverse a call already in progress. Each finished run returns a receipt naming the selected model and provider without including the prompt or model output. Use the model catalog for what your organization can run now. Provider secrets never appear in API requests or responses. Retry a mutation with the same Idempotency-Key and the same request body. title: Millwork API version: 1.0.0 servers: - url: https://api.getmillwork.dev security: [] tags: - description: >- Submit work, check its status, cancel it, and read the result. The API calls each run an execution. name: Runs - description: A record of how a run was handled, without prompt or result content. name: Receipts - description: Models this organization can use now. name: Models - description: Providers and sign-in methods that can be connected. name: Available providers - description: Provider accounts connected to this organization. name: Provider connections - description: >- One-time browser steps for connecting a provider without sending its secret in an API request. name: Secure credential setup - description: Exact models and provider routes available through connected accounts. name: Provider models - description: Create, label, list, and revoke organization API keys. name: API keys - description: Organization members and invitations. name: Members - description: Metered usage and quota state. name: Usage - description: Account, plan and allowance snapshot. name: Account - description: Checkout, billing portal and billing profile. name: Billing - description: Webhook endpoints, deliveries and replay. name: Webhooks - description: Organization-scoped compliance export. name: Compliance export - description: >- Models, agents, and skills Millwork can choose for a run. The API calls each one an arm. name: Registered options - description: >- Checks that score output and can stop, retry, or choose another option within the request policy. name: Output checks - description: Routing proposals and their review lifecycle. name: Repair proposals - description: Aggregate evaluation trend and repair history. name: Evaluation - description: Publisher and release identity records for supported models. name: Model definitions - description: >- Protected provider-credential references. Secret material never appears in this API. name: Credential references - description: Dashboard browser sign-in, sign-up, session lookup, and sign-out. name: Browser access - description: Read-only demo session setup. name: Demo - description: Machine setup and the authenticated organization profile. name: Organizations paths: /v1/verifiers: post: tags: - Output checks summary: Register output check description: Register a verifier. operationId: postVerifiers requestBody: content: application/json: schema: additionalProperties: false properties: display_name: maxLength: 200 minLength: 1 type: string endpoint: additionalProperties: false properties: auth_ref: type: string url: format: uri type: string required: - url - auth_ref type: object input_data_classes: items: $ref: '#/components/schemas/DataClass' minItems: 1 type: array kind: enum: - endpoint scoring: additionalProperties: false properties: correctness: enum: - boolean_anchors quality: enum: - scalar_0_1 required: - correctness - quality type: object version: minLength: 1 type: string required: - display_name - version - kind - endpoint - input_data_classes - scoring type: object required: true responses: '201': content: application/json: schema: additionalProperties: false description: >- Registration result. Millwork tests the verifier before setting the status. properties: hash: type: string preflight: additionalProperties: false properties: checked_at: format: date-time type: string contract: anyOf: - additionalProperties: false properties: validated: description: >- true only when the endpoint answered 2xx with a valid VerifierResult. type: boolean verifier_result: anyOf: - additionalProperties: false properties: anchor_results: additionalProperties: type: boolean type: object is_correct: type: boolean named_metrics: additionalProperties: type: number type: object quality_score: type: number required: - is_correct - quality_score type: object - type: 'null' violation: anyOf: - type: string - type: 'null' description: >- Contract-violation detail when the endpoint was reachable but its response failed validation; null otherwise. required: - validated - verifier_result - violation type: object - type: 'null' description: >- null when the endpoint was unreachable (no response to check). detail: anyOf: - type: string - type: 'null' http_status: anyOf: - type: number - type: 'null' description: >- HTTP status the endpoint answered with; null when no response arrived. outcome: enum: - reachable - unreachable type: string reason_code: anyOf: - enum: - scheme_rejected - dns_resolution_failed - private_range_rejected - probe_timeout - endpoint_unreachable - authentication_failed type: string - type: 'null' required: - outcome - reason_code - http_status - contract - detail - checked_at type: object status: enum: - ready - degraded type: string status_reason: anyOf: - type: string - type: 'null' verifier_id: type: string required: - verifier_id - hash - status - status_reason - preflight type: object description: >- Registration result. Millwork tests the verifier before setting the status. 4XX: content: application/problem+json: schema: $ref: '#/components/schemas/Problem' description: >- Request failure in RFC 7807 format. The `type` field identifies the reason. Validation errors list affected fields. Rate and quota errors include `retry_after_s` and the `Retry-After` header. 5XX: content: application/problem+json: schema: $ref: '#/components/schemas/Problem' description: >- Server failure in RFC 7807 format. The response does not include internal error details. security: - bearerAuth: [] - sessionCookie: [] components: schemas: DataClass: enum: - public - sandbox - tenant_internal Problem: additionalProperties: false properties: detail: description: Short, safe, occurrence-specific description. Never a stack trace. type: string errors: description: Per-field validation failures (validation_failed only). items: additionalProperties: false properties: field: type: string message: type: string required: - field - message type: object type: array instance: description: Unique id for this occurrence, safe to quote in support requests. format: uuid type: string retry_after_s: description: >- Seconds to wait before retrying (rate_limited and quota_exceeded only; mirrored as the Retry-After header). type: integer status: description: HTTP status code, duplicated in the body per RFC 7807. type: integer title: description: Human-readable summary of the problem type. type: string type: description: Stable URI that identifies the error type. format: uri type: string required: - type - title - status - instance type: object securitySchemes: bearerAuth: description: Organization API key for application requests. scheme: bearer type: http sessionCookie: description: Dashboard browser session. Do not use this credential in an application. in: cookie name: solverapi_session type: apiKey ````