> ## Documentation Index > Fetch the complete documentation index at: https://docs.goosybear.ai/llms.txt > Use this file to discover all available pages before exploring further. # Call credits.balance > Read how many credits this account has left. Say the figure back exactly as given — never work one out or recall one. Topping up is done by a person on Settings → Billing; you cannot do it here. ## OpenAPI ````yaml /openapi.json post /api/v1/tools/credits.balance openapi: 3.1.0 info: title: Goosy Bear API version: 1.0.0-beta summary: Read your account's content, schedule, library and credits. description: >- BETA. This API is in beta: paths, request shapes and response envelopes may change, and every response carries an `x-goosy-api: beta` header for as long as that is true. Pin the OpenAPI document you generated against and re-generate when it changes. servers: - url: https://app.goosybear.ai description: Production security: - tenantApiKey: [] paths: /api/v1/tools/credits.balance: post: tags: - credits summary: Call credits.balance description: >- Read how many credits this account has left. Say the figure back exactly as given — never work one out or recall one. Topping up is done by a person on Settings → Billing; you cannot do it here. operationId: call_credits_balance requestBody: required: false content: application/json: schema: type: object properties: {} additionalProperties: false responses: '200': description: >- The call was admitted and dispatched. `ok` says whether the tool succeeded — a refusal the tool itself produced is still a 200, exactly as it is a successful JSON-RPC result over MCP. headers: x-goosy-api: description: Present while this API is in beta; the value is `beta`. schema: type: string const: beta x-goosy-tool-error: description: >- `true` whenever the call did not succeed, including when the tool itself returned a typed `ok: false` — this tool runs at account level, so there is no workspace boundary to distinguish. **Branch on `ok` in the body for the outcome; this header is the transport-level hint.** schema: type: string enum: - 'true' - 'false' content: application/json: schema: oneOf: - type: object description: The tool ran and answered. properties: ok: type: boolean const: true balance: type: number description: >- How many credits are left on the account that pays for this workspace. required: - ok - balance - $ref: '#/components/schemas/ToolRefusal' '400': description: >- The request body could not be used: it is present but not a JSON object (`tenant_api.malformed_body`), or it is a top-level array carrying more messages than this endpoint accepts (`tenant_mcp.batch_too_large`). Send the tool's arguments as a JSON object, or omit the body entirely. headers: x-goosy-api: description: Present while this API is in beta; the value is `beta`. schema: type: string const: beta content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: >- No bearer credential, or one that did not resolve. Deliberately ONE undifferentiated answer for absent / unknown / revoked / expired, so the endpoint is never an oracle over the key space. headers: x-goosy-api: description: Present while this API is in beta; the value is `beta`. schema: type: string const: beta content: application/json: schema: $ref: '#/components/schemas/Error' '403': description: >- The credential is good but the surface is not open to it — the platform or account API switch is off, or the holder lacks the `api.access` capability. The `code` says which. headers: x-goosy-api: description: Present while this API is in beta; the value is `beta`. schema: type: string const: beta content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: >- No such tool. The body names no tool and is identical for every unrecognised name. headers: x-goosy-api: description: Present while this API is in beta; the value is `beta`. schema: type: string const: beta content: application/json: schema: $ref: '#/components/schemas/Error' '429': description: >- Over this key's per-minute cap. Carries `Retry-After` and `error.retry_after_seconds`. headers: x-goosy-api: description: Present while this API is in beta; the value is `beta`. schema: type: string const: beta Retry-After: description: Whole seconds to wait before retrying. schema: type: integer minimum: 1 content: application/json: schema: $ref: '#/components/schemas/Error' components: schemas: ToolRefusal: type: object properties: ok: type: boolean const: false code: type: string description: >- The typed reason — e.g. `workspace_ambiguous`, `invalid_arguments`, or the tool's own failure code. message: type: string description: A sentence a person can act on. workspaces: type: array items: type: string description: 'On a workspace refusal: the slugs this key may pass as `workspace`.' issues: type: array items: type: object properties: path: type: string message: type: string required: - path - message additionalProperties: false description: 'On `invalid_arguments`: which fields failed, and why.' required: - ok - code - message additionalProperties: false description: A call that was admitted and dispatched, and did not succeed. Error: type: object properties: error: type: object properties: code: type: string description: >- The typed refusal code — e.g. `tenant_mcp.surface_disabled`, `tenant_mcp.rate_limited`. message: type: string description: A sentence a person can act on. retry_after_seconds: type: number description: 'On a 429: whole seconds to wait. Mirrors `Retry-After`.' required: - code - message additionalProperties: false required: - error additionalProperties: false description: >- A request the boundary refused before dispatching anything. The same shape the MCP endpoint answers its own refusals with, so one client branch covers both transports. securitySchemes: tenantApiKey: type: http scheme: bearer description: >- An API key minted at Settings › API & MCP. Send it as `Authorization: Bearer `. A key carries its holder's own permissions, resolved on every call — revoking a membership closes the key's reach immediately. Keep it in an environment variable (`GOOSY_API_KEY`), never in a committed file. ````