> ## Documentation Index > Fetch the complete documentation index at: https://docs.firedrill.run/llms.txt > Use this file to discover all available pages before exploring further. # Read current Tool capacity > Requires `read`. Returns current lifetime/resource bounds and capacity observations. Does not reserve capacity. Pausing retains the instance’s capacity slot and expiry. ## OpenAPI ````yaml /api-reference/openapi.json get /v1/service-policy openapi: 3.1.0 info: title: Firedrill API version: '2026-10-14' description: >- Authenticated simulation coordination, retained evidence and controlled Tools. Your customer-owned runner executes the target. This reference covers the documented JSON workflows; Tool-native HTTP routes and MCP methods are discovered from the selected Tool. Structural schemas do not replace canonical validation or capability checks. servers: - url: https://api.firedrill.run security: - FiredrillCredential: [] tags: - name: discovery description: Capabilities, authority and structural authoring schemas. - name: projects description: Projects and their logical environment. - name: simulations description: Preparation, queued batches and cancellation. - name: runs description: Individual recorded executions. - name: reports description: Retained observations, distributions and descriptive comparisons. - name: assessment description: Optional semantic assessment and authored scenario ranking. - name: evidence description: Authenticated captured files. - name: runner-protocol description: Advanced customer-runner coordination; native SDKs manage this protocol. - name: scenarios description: Immutable retained versions of repository-authored scenarios. - name: credentials description: Expiring scoped CI credentials. - name: authentication description: Human-approved sign-in boundaries. - name: tools description: Tool releases, data, instances and observations. - name: tool-connections description: Bounded target/manual grants, separate from control authority. - name: tool-lifecycle description: Epoch-fenced reusable Tool actions and exact-key recovery. paths: /v1/service-policy: get: tags: - tools summary: Read current Tool capacity description: >- Requires `read`. Returns current lifetime/resource bounds and capacity observations. Does not reserve capacity. Pausing retains the instance’s capacity slot and expiry. operationId: tools_get_policy parameters: - name: projectId in: query required: true schema: type: string minLength: 1 maxLength: 160 - name: environmentId in: query required: true schema: type: string minLength: 1 maxLength: 160 responses: '200': description: The retained resource or operation response. content: application/json: schema: $ref: '#/components/schemas/ServicePolicy' '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/Forbidden' '404': $ref: '#/components/responses/NotFound' '409': $ref: '#/components/responses/Conflict' '410': $ref: '#/components/responses/Gone' '413': $ref: '#/components/responses/PayloadTooLarge' '415': $ref: '#/components/responses/UnsupportedMediaType' '422': $ref: '#/components/responses/InvalidInput' '429': $ref: '#/components/responses/Capacity' '500': $ref: '#/components/responses/Internal' '503': $ref: '#/components/responses/Unavailable' components: schemas: ServicePolicy: type: object properties: limits: type: object properties: defaultTtlSeconds: type: number maxTtlSeconds: type: number maxActiveInstances: type: number required: - defaultTtlSeconds - maxTtlSeconds - maxActiveInstances resourceEnvelope: anyOf: - $ref: '#/components/schemas/ServiceResourceEnvelope' required: - limits ServiceResourceEnvelope: type: object properties: schemaVersion: type: string const: 2026-10-17-tool-resources.1 basis: type: string const: enforced_configuration_not_measured_usage runtime: type: object properties: wasmLinearMemoryLimitBytes: type: number stackLimitBytes: type: number operationTimeLimitMs: type: number initializationTimeLimitMs: type: number hostCallsPerOperation: type: number inputLimitBytes: type: number outputLimitBytes: type: number artifactLimitBytes: type: number reinstantiationsPerMinute: type: number sessionTimeBudget: type: object properties: windowMs: type: number admissionLimitMs: type: number accounting: type: string const: elapsed_handler_time_not_os_cpu scope: type: string const: instance_process_lifetime inFlightMayExceedBudget: type: boolean const: true required: - windowMs - admissionLimitMs - accounting - scope - inFlightMayExceedBudget required: - wasmLinearMemoryLimitBytes - stackLimitBytes - operationTimeLimitMs - initializationTimeLimitMs - hostCallsPerOperation - inputLimitBytes - outputLimitBytes - artifactLimitBytes - reinstantiationsPerMinute - sessionTimeBudget build: type: object properties: maxConcurrent: type: number timeoutMs: type: number submittedSourceLimitBytes: type: number workerV8OldSpaceLimitBytes: type: number workerOutputLimitBytes: type: number required: - maxConcurrent - timeoutMs - submittedSourceLimitBytes - workerV8OldSpaceLimitBytes - workerOutputLimitBytes estimate: type: object properties: basis: type: string const: one_new_instance_configured_ceiling instanceSlots: type: number defaultLifetimeSeconds: type: number wasmLinearMemoryCeilingBytes: type: number measuredCpuMs: type: 'null' measuredMemoryBytes: type: 'null' reserved: type: boolean const: false required: - basis - instanceSlots - defaultLifetimeSeconds - wasmLinearMemoryCeilingBytes - measuredCpuMs - measuredMemoryBytes - reserved limitations: type: array items: type: string required: - schemaVersion - basis - runtime - build - estimate - limitations ApiError: type: object properties: error: type: object properties: code: type: string message: type: string repair: type: string requestId: type: string details: anyOf: - type: 'null' - type: string - type: number - type: boolean const: false - type: boolean const: true - type: array items: $ref: '#/components/schemas/JsonValue' - type: object properties: {} required: [] additionalProperties: $ref: '#/components/schemas/JsonValue' validation: anyOf: - $ref: '#/components/schemas/ValidationDiagnostics' required: - code - message - repair - requestId required: - error JsonValue: description: >- Any JSON value: null, boolean, finite number, string, array or object. The request transport must contain valid JSON; canonical validation rejects nonfinite numbers. ValidationDiagnostics: type: object properties: issues: type: array items: $ref: '#/components/schemas/ValidationIssue' totalIssues: type: number omittedIssues: type: number required: - issues - totalIssues - omittedIssues ValidationIssue: type: object properties: path: type: array items: anyOf: - type: string - type: number code: type: string message: type: string pathTruncated: anyOf: - type: boolean const: true required: - path - code - message responses: BadRequest: description: >- Malformed request or missing operation key. Repair the input before retrying. content: application/json: schema: $ref: '#/components/schemas/ApiError' Unauthorized: description: >- Missing, expired or revoked authority. Complete supported sign-in or use an authorized credential. content: application/json: schema: $ref: '#/components/schemas/ApiError' Forbidden: description: >- The current capability, actor, audience or ownership grant does not allow this operation. content: application/json: schema: $ref: '#/components/schemas/ApiError' NotFound: description: The exact resource is unavailable under the current authority and scope. content: application/json: schema: $ref: '#/components/schemas/ApiError' Conflict: description: >- Selected context, epoch, revision, lease or saved operation intent conflicts; inspect retained state. content: application/json: schema: $ref: '#/components/schemas/ApiError' Gone: description: >- Retained content is expired, deleted or unavailable under its retention fence. Metadata is not a replacement payload. content: application/json: schema: $ref: '#/components/schemas/ApiError' PayloadTooLarge: description: >- Request, response or retained-resource size exceeds this operation’s enforced bound. content: application/json: schema: $ref: '#/components/schemas/ApiError' UnsupportedMediaType: description: Send the documented JSON or exact artifact media type. content: application/json: schema: $ref: '#/components/schemas/ApiError' InvalidInput: description: >- Input failed canonical validation. Inspect error.validation and repair the indicated fields. content: application/json: schema: $ref: '#/components/schemas/ApiError' Capacity: description: >- Bounded capacity or resource admission rejected the operation. Inspect retained work before retrying. content: application/json: schema: $ref: '#/components/schemas/ApiError' Internal: description: >- The service could not complete the request. Inspect retained state before exact-key recovery. content: application/json: schema: $ref: '#/components/schemas/ApiError' Unavailable: description: >- A required service, provider or authority check is unavailable. Existing evidence remains separate from this failure. content: application/json: schema: $ref: '#/components/schemas/ApiError' securitySchemes: FiredrillCredential: type: http scheme: bearer description: >- Opaque Firedrill interactive or scoped machine credential. The CLI handles human-approved login; CI stores its scoped credential as FIREDRILL_TOKEN. Capabilities and project/environment ownership are rechecked at use. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.