> ## Documentation Index > Fetch the complete documentation index at: https://docs.runaether.dev/llms.txt > Use this file to discover all available pages before exploring further. # Check whether your tasks in a project can start > Lists the required MCP servers the project enables, and those its repository's .mcp.json and .codex/config.toml declare at base_branch, that creating a task there would be refused for (mcp_server_not_connected): those whose connection its credential policy names — yours for the creator policy, the organization's for the org policy — does not exist or needs reauthorization. Task creation runs the same check. Empty when your tasks can start. A repository file a task cannot use is refused (mcp_repo_config_invalid). ## OpenAPI ````yaml api-reference/openapi.json GET /projects/{id}/mcp-server-readiness openapi: 3.1.0 info: title: Aether API version: 0.1.0 servers: - url: https://api.runaether.dev security: - bearerAuth: [] paths: /projects/{id}/mcp-server-readiness: get: tags: - mcp-servers summary: Check whether your tasks in a project can start description: >- Lists the required MCP servers the project enables, and those its repository's .mcp.json and .codex/config.toml declare at base_branch, that creating a task there would be refused for (mcp_server_not_connected): those whose connection its credential policy names — yours for the creator policy, the organization's for the org policy — does not exist or needs reauthorization. Task creation runs the same check. Empty when your tasks can start. A repository file a task cannot use is refused (mcp_repo_config_invalid). operationId: getProjectMcpServerReadiness parameters: - in: path name: id required: true schema: format: uuid type: string - description: >- The branch the task would be based on, whose .mcp.json and .codex/config.toml are checked; the project's default branch when omitted. explode: false in: query name: base_branch schema: description: >- The branch the task would be based on, whose .mcp.json and .codex/config.toml are checked; the project's default branch when omitted. type: string responses: '200': content: application/json: schema: $ref: '#/components/schemas/ProjectMcpServerReadinessResponse' description: OK '401': content: application/json: schema: $ref: '#/components/schemas/McpServersErrorResponse' description: Unauthorized '403': content: application/json: schema: $ref: '#/components/schemas/OrgAuthorizationErrorResponse' description: Forbidden '404': content: application/json: schema: $ref: '#/components/schemas/McpServersErrorResponse' description: Not Found '422': content: application/json: schema: $ref: '#/components/schemas/McpServersErrorResponse' description: Unprocessable Entity '500': content: application/json: schema: $ref: '#/components/schemas/McpServersErrorResponse' description: Internal Server Error '503': content: application/json: schema: $ref: '#/components/schemas/McpServersErrorResponse' description: Service Unavailable components: schemas: ProjectMcpServerReadinessResponse: additionalProperties: false properties: optional_servers: description: >- The optional servers of the project's catalog and of the plugins it enables that the viewer's tasks start without, since their connection cannot be used: a task is created, and its agent is not given them. Ordered by key; empty when none. Never a server the task's repository declares. items: $ref: '#/components/schemas/McpServerNotConnected' type: array repo_mcp_server_skips: description: >- The declarations of the repository's .mcp.json and .codex/config.toml the viewer's tasks start without, since Aether cannot use them, in the order found; empty when none. items: $ref: '#/components/schemas/RepoMcpServerSkip' type: array servers: description: >- The required servers task creation refuses the viewer's tasks for (mcp_server_not_connected), ordered by key; empty when none. items: $ref: '#/components/schemas/McpServerNotConnected' type: array required: - servers - optional_servers - repo_mcp_server_skips type: object McpServersErrorResponse: additionalProperties: false properties: code: enum: - account_deleting - aether_inference_unavailable - aether_inference_unserved - agent_connector_not_found - agent_default_project_archived - bad_gateway - bad_request - conflict - connection_agent_only - connection_harness_mismatch - connection_not_held - control_forbidden - default_skill_required - forbidden - gateway_timeout - gone - integration_auth_unexpected - integration_not_in_directory - integration_shape_changed - internal_error - mcp_connection_github_not_connected - mcp_connection_oauth_not_accepted - mcp_connection_org_not_offered - mcp_connection_secret_invalid - mcp_connection_server_changed - mcp_connection_static_secret_not_accepted - mcp_credential_policy_not_applicable - mcp_credential_policy_org_unavailable - mcp_credential_policy_required - mcp_oauth_app_auth_method_unsupported - mcp_oauth_app_invalid - mcp_oauth_app_issuer_invalid - mcp_oauth_app_required - mcp_oauth_not_advertised - mcp_oauth_pkce_unsupported - mcp_oauth_registration_failed - mcp_repo_config_invalid - mcp_server_address_refused - mcp_server_aether_managed - mcp_server_api_key_not_applicable - mcp_server_args_invalid - mcp_server_auth_discovery_failed - mcp_server_auth_unsupported - mcp_server_directory_managed - mcp_server_directory_moved - mcp_server_display_name_invalid - mcp_server_env_invalid - mcp_server_headers_invalid - mcp_server_key_invalid - mcp_server_key_reserved - mcp_server_key_taken - mcp_server_kind_change_refused - mcp_server_not_from_directory - mcp_server_not_mcp - mcp_server_package_invalid - mcp_server_plugin_bundled - mcp_server_plugin_off - mcp_server_response_too_large - mcp_server_return_to_invalid - mcp_server_runtime_invalid - mcp_server_switched_off - mcp_server_unreachable - mcp_server_url_invalid - mcp_server_version_unpinned - method_not_allowed - not_acceptable - not_found - not_implemented - org_role_insufficient - org_suspended - payment_required - plugin_moved - plugin_name_taken - plugin_request_invalid - plugin_server_key_reserved - plugin_server_key_taken - plugin_server_probe_failed - plugin_server_required - plugin_skill_invalid - plugin_source_address_refused - plugin_source_empty - plugin_source_invalid - plugin_source_not_found - plugin_source_not_public - plugin_source_too_large - plugin_source_unreachable - plugin_source_unsupported - plugin_switched_off - plugin_undeliverable - precondition_failed - rate_limited - request_canceled - request_timeout - request_too_large - service_unavailable - skill_slug_reserved - unauthenticated - unsupported_media_type - validation_failed minLength: 1 type: string error: minLength: 1 type: string errors: items: $ref: '#/components/schemas/ErrorDetail' type: array required: - error - code type: object OrgAuthorizationErrorResponse: additionalProperties: false properties: code: enum: - org_membership_required - org_role_insufficient - org_suspended - account_deleting - agent_host_route_not_allowed - credential_kind_not_admitted type: string error: minLength: 1 type: string required: - error - code type: object McpServerNotConnected: additionalProperties: false properties: display_name: type: string key: type: string policy: enum: - creator - org type: string reason: enum: - not_connected - needs_reauth type: string repo: $ref: '#/components/schemas/McpServerRepoDeclaration' required: - key - display_name - policy - reason type: object RepoMcpServerSkip: additionalProperties: false properties: file: enum: - .mcp.json - .codex/config.toml type: string reason: description: Why the task is not given it, end-user copy. minLength: 1 type: string server: description: >- The server as the file names it; null when the whole file is skipped. minLength: 1 type: - string - 'null' required: - file - server - reason type: object ErrorDetail: additionalProperties: false properties: location: description: >- Where the error occurred, e.g. 'body.items[3].tags' or 'path.thing-id' type: string message: description: Error message text type: string value: description: The value at the given location type: object McpServerRepoDeclaration: additionalProperties: false properties: cataloged: type: boolean file: enum: - .mcp.json - .codex/config.toml type: string required: - file - cataloged type: object securitySchemes: bearerAuth: bearerFormat: JWT scheme: bearer type: http ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.