CircleCI MCP Server

Instructions

Input Schema

Input Schema (JSON Schema)

Implementation Reference

• src/tools/getLatestPipelineStatus/handler.ts:12-62 (handler)

  The handler function that implements the core logic of the 'get_latest_pipeline_status' tool. It processes input parameters to determine the project slug and branch, fetches the latest pipeline workflows, and formats the status output.
  export const getLatestPipelineStatus: ToolCallback<{ params: typeof getLatestPipelineStatusInputSchema; }> = async (args) => { const { workspaceRoot, gitRemoteURL, branch, projectURL, projectSlug: inputProjectSlug, } = args.params; let projectSlug: string | null | undefined; let branchFromURL: string | null | undefined; if (inputProjectSlug) { if (!branch) { return mcpErrorOutput( 'Branch not provided. When using projectSlug, a branch must also be specified.', ); } projectSlug = inputProjectSlug; } else if (projectURL) { projectSlug = getProjectSlugFromURL(projectURL); branchFromURL = getBranchFromURL(projectURL); } else if (workspaceRoot && gitRemoteURL) { projectSlug = await identifyProjectSlug({ gitRemoteURL, }); } else { return mcpErrorOutput( 'Missing required inputs. Please provide either: 1) projectSlug with branch, 2) projectURL, or 3) workspaceRoot with gitRemoteURL and branch.', ); } if (!projectSlug) { return mcpErrorOutput(` Project not found. Ask the user to provide the inputs user can provide based on the tool description. Project slug: ${projectSlug} Git remote URL: ${gitRemoteURL} Branch: ${branch} `); } const latestPipelineWorkflows = await getLatestPipelineWorkflows({ projectSlug, branch: branchFromURL ?? branch, }); return formatLatestPipelineStatus(latestPipelineWorkflows); };
• src/tools/getLatestPipelineStatus/inputSchema.ts:7-37 (schema)

  The Zod schema defining the input parameters for the get_latest_pipeline_status tool, including optional fields for projectSlug, branch, projectURL, workspaceRoot, and gitRemoteURL.
  export const getLatestPipelineStatusInputSchema = z.object({ projectSlug: z.string().describe(projectSlugDescription).optional(), branch: z.string().describe(branchDescription).optional(), projectURL: z .string() .describe( 'The URL of the CircleCI project. Can be any of these formats:\n' + '- Project URL with branch: https://app.circleci.com/pipelines/gh/organization/project?branch=feature-branch\n' + '- Legacy Pipeline URL: https://circleci.com/gh/organization/project/123\n' + '- Legacy Pipeline URL with branch: https://circleci.com/gh/organization/project/123?branch=feature-branch\n' + '- Pipeline URL: https://app.circleci.com/pipelines/gh/organization/project/123\n' + '- Workflow URL: https://app.circleci.com/pipelines/gh/organization/project/123/workflows/abc-def\n' + '- Job URL: https://app.circleci.com/pipelines/gh/organization/project/123/workflows/abc-def/jobs/xyz', ) .optional(), workspaceRoot: z .string() .describe( 'The absolute path to the root directory of your project workspace. ' + 'This should be the top-level folder containing your source code, configuration files, and dependencies. ' + 'For example: "/home/user/my-project" or "C:\\Users\\user\\my-project"', ) .optional(), gitRemoteURL: z .string() .describe( 'The URL of the remote git repository. This should be the URL of the repository that you cloned to your local workspace. ' + 'For example: "https://github.com/user/my-project.git"', ) .optional(), });
• src/tools/getLatestPipelineStatus/tool.ts:4-46 (registration)

  The tool registration object defining the name 'get_latest_pipeline_status', detailed description, and linking to the input schema.
  export const getLatestPipelineStatusTool = { name: 'get_latest_pipeline_status' as const, description: ` This tool retrieves the status of the latest pipeline for a CircleCI project. It can be used to check pipeline status, get latest build status, or view current pipeline state. Common use cases: - Check latest pipeline status - Get current build status - View pipeline state - Check build progress - Get pipeline information Input options (EXACTLY ONE of these THREE options must be used): ${option1DescriptionBranchRequired} Option 2 - Direct URL (provide ONE of these): - projectURL: The URL of the CircleCI project in any of these formats: * Project URL: https://app.circleci.com/pipelines/gh/organization/project * Pipeline URL: https://app.circleci.com/pipelines/gh/organization/project/123 * Workflow URL: https://app.circleci.com/pipelines/gh/organization/project/123/workflows/abc-def * Job URL: https://app.circleci.com/pipelines/gh/organization/project/123/workflows/abc-def/jobs/xyz * Legacy Job URL: https://circleci.com/gh/organization/project/123 Option 3 - Project Detection (ALL of these must be provided together): - workspaceRoot: The absolute path to the workspace root - gitRemoteURL: The URL of the git remote repository - branch: The name of the current branch Recommended Workflow: 1. Use listFollowedProjects tool to get a list of projects 2. Extract the projectSlug from the chosen project (format: "gh/organization/project") 3. Use that projectSlug with a branch name for this tool Additional Requirements: - Never call this tool with incomplete parameters - If using Option 1, make sure to extract the projectSlug exactly as provided by listFollowedProjects - If using Option 2, the URLs MUST be provided by the user - do not attempt to construct or guess URLs - If using Option 3, ALL THREE parameters (workspaceRoot, gitRemoteURL, branch) must be provided - If none of the options can be fully satisfied, ask the user for the missing information before making the tool call `, inputSchema: getLatestPipelineStatusInputSchema, };
• src/circleci-tools.ts:30-44 (registration)

  Registration of getLatestPipelineStatusTool in the central CCI_TOOLS array used for MCP tool exposure.
  export const CCI_TOOLS = [ getBuildFailureLogsTool, getFlakyTestLogsTool, getLatestPipelineStatusTool, getJobTestResultsTool, configHelperTool, createPromptTemplateTool, recommendPromptTemplateTestsTool, runPipelineTool, listFollowedProjectsTool, runEvaluationTestsTool, rerunWorkflowTool, analyzeDiffTool, runRollbackPipelineTool, ];
• src/circleci-tools.ts:58-72 (registration)

  Mapping of the tool name 'get_latest_pipeline_status' to its handler function in the CCI_HANDLERS object.
  export const CCI_HANDLERS = { get_build_failure_logs: getBuildFailureLogs, find_flaky_tests: getFlakyTestLogs, get_latest_pipeline_status: getLatestPipelineStatus, get_job_test_results: getJobTestResults, config_helper: configHelper, create_prompt_template: createPromptTemplate, recommend_prompt_template_tests: recommendPromptTemplateTests, run_pipeline: runPipeline, list_followed_projects: listFollowedProjects, run_evaluation_tests: runEvaluationTests, rerun_workflow: rerunWorkflow, analyze_diff: analyzeDiff, run_rollback_pipeline: runRollbackPipeline, } satisfies ToolHandlers;