> ## Documentation Index > Fetch the complete documentation index at: https://docs.corepillar.ai/llms.txt > Use this file to discover all available pages before exploring further. # Generate scenarios > Creates a run and generates test scenarios for the agent. Send `run_id` and `scenario_id` instead to regenerate one scenario of an existing run in place; the response is then `{ scenario }`. **Auth:** session. **Permission:** `run_agents` or `manage_agents`. ## OpenAPI ````yaml /api-reference/openapi.json post /projects/{projectId}/cost-calculator/generate-scenarios openapi: 3.1.0 info: title: CorePillar API version: 1.0.0 description: >- REST API for AgentHub and ModelHub. Ingestion endpoints authenticate with a project tracing key; all other endpoints use the signed-in user's browser session. servers: - url: https://pillarforge.corepillar.ai/api/v1 description: AgentHub security: [] tags: - name: Ingestion description: 'Send traces with a tracing key: JSON ingest and OpenTelemetry (OTLP).' - name: Traces description: Read traces and spans. - name: Evaluations description: Evaluate traces with evaluator collections. - name: Evaluators description: Built-in and custom evaluators. - name: Evaluator collections description: Ordered groups of evaluators. - name: Organizations description: Organizations you belong to. - name: Members description: Organization members, invites and roles. - name: Projects description: Projects inside an organization. - name: SSO description: Okta SSO configuration. - name: Tracing keys description: Create, list and revoke project tracing keys. - name: Cost calculator description: Estimate, generate and execute scenario runs. - name: Synthetic description: Synthetic agent and data setup from source material. - name: Chat description: ModelHub chat. Served at https://modelhub.corepillar.ai/api/v1. - name: Auth description: Sign-in helpers. - name: E2E description: Internal end-to-end encryption key directory. paths: /projects/{projectId}/cost-calculator/generate-scenarios: post: tags: - Cost calculator summary: Generate scenarios description: >- Creates a run and generates test scenarios for the agent. Send `run_id` and `scenario_id` instead to regenerate one scenario of an existing run in place; the response is then `{ scenario }`. **Auth:** session. **Permission:** `run_agents` or `manage_agents`. operationId: generateScenarios parameters: - name: projectId in: path required: true description: Project id. schema: type: string format: uuid requestBody: required: true content: application/json: schema: oneOf: - title: Generate a batch type: object required: - agent_config properties: agent_config: $ref: '#/components/schemas/AgentConfig' model_config_id: type: - string - 'null' format: uuid scenario_count: type: integer minimum: 1 default: 3 description: A run is capped at 1,000 scenarios. include_multi_turn: type: boolean default: false - title: Regenerate one scenario type: object required: - agent_config - run_id - scenario_id properties: agent_config: $ref: '#/components/schemas/AgentConfig' model_config_id: type: - string - 'null' format: uuid run_id: type: string format: uuid scenario_id: type: string format: uuid responses: '200': description: Scenario regenerated. content: application/json: schema: type: object required: - data properties: data: type: object properties: scenario: $ref: '#/components/schemas/ScenarioSummary' '201': description: Run created with its scenarios. content: application/json: schema: type: object required: - data properties: data: type: object properties: run_id: type: string format: uuid estimate: $ref: '#/components/schemas/CostEstimate' scenarios: type: array items: $ref: '#/components/schemas/ScenarioSummary' '400': description: Validation failed. `error.code` is `VALIDATION_ERROR`. content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' '401': description: Not signed in (`UNAUTHORIZED`). content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' '403': description: >- Not a member of the organization, or missing the required permission (`FORBIDDEN`). content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' '404': description: >- Project not found (`PROJECT_NOT_FOUND`) or scenario not found (`NOT_FOUND`). content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' '500': description: Unexpected server error (`INTERNAL_ERROR`). content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' security: - session: [] components: schemas: AgentConfig: type: object required: - system_prompt description: The agent the Cost Calculator simulates. properties: system_prompt: type: string minLength: 1 maxLength: 20000 tone: type: string maxLength: 2000 default: '' tools: type: array maxItems: 50 items: $ref: '#/components/schemas/AgentTool' default: [] memory: type: string maxLength: 4000 default: '' ScenarioSummary: type: object properties: id: type: string format: uuid name: type: string category: type: string description: For example `happy_path`, `edge_case`, `refusal` or `multi_turn`. conversation_plan: description: The planned conversation for the scenario. turns: type: array items: type: object additionalProperties: true CostEstimate: type: object description: >- Offline cost estimate. Key fields shown; the object carries more detail for the UI. additionalProperties: true properties: perModel: type: array items: type: object additionalProperties: true totalCostUsd: type: number totalInputTokens: type: integer totalOutputTokens: type: integer scenarioCount: type: integer llmCalls: type: integer ErrorEnvelope: type: object required: - error properties: error: type: object required: - code - message properties: code: type: string description: Stable machine-readable code. Branch on this, not on `message`. examples: - VALIDATION_ERROR message: type: string description: Human-readable description. May change. details: type: object additionalProperties: true description: Extra context; often empty. AgentTool: type: object required: - name properties: kind: type: string enum: - skill - memory - tool - connector default: tool name: type: string minLength: 1 maxLength: 200 mode: type: string enum: - simulated - real default: simulated description: type: string maxLength: 512 default: '' content: type: string maxLength: 20000 securitySchemes: session: type: apiKey in: cookie name: session description: >- The session cookie set when you sign in to AgentHub or ModelHub in a browser. The cookie name shown here is illustrative. There are no API tokens for these endpoints. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.