user-invocable: false description: Validate Copilot Studio agent YAML files using the LSP binary's full diagnostics (YAML structure, Power Fx, schema, cross-file references). Use when the user asks to check, validate, or verify YAML files. argument-hint: <path-to-agent-workspace> allowed-tools: Bash(node *manage-agent.bundle.js *), Bash(node *schema-lookup.bundle.js *), Read, Glob

Validate Agent YAML

Validate Copilot Studio agent YAML files using the LanguageServerHost binary's full diagnostics — the same validation engine used by the VS Code Copilot Studio extension.

Instructions

1. Locate the agent workspace. Find the directory containing .mcs/conn.json. If a specific file was requested, use the workspace that contains it.

2. Run LSP-based validation:

   node ${CLAUDE_SKILL_DIR}/../../scripts/manage-agent.bundle.js validate \
     --workspace "<path-to-agent-folder>" \
     --tenant-id "<tenantId>" \
     --environment-id "<envId>" \
     --environment-url "<envUrl>" \
     --agent-mgmt-url "<mgmtUrl>"
   

   This validates all .mcs.yml files in the workspace using the LSP binary's full diagnostics: YAML structure, Power Fx expressions, schema validation, cross-file references, and environment-specific checks.

   Connection details come from .mcs/conn.json — read it to get tenant-id, environment-id, environment-url, and agent-mgmt-url.

3. Parse the JSON output:

   • valid: true → all files pass (may still have warnings)
   • valid: false + summary.errors > 0 → report errors as FAIL items
   • summary.warnings > 0 → report as WARN items
   • Each file with diagnostics is listed with severity, message, code, and line range

4. If the user asked about a specific file, filter the output to show only that file's diagnostics.

5. For additional context on specific errors, use schema lookup:

   node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js resolve <kind>
   

6. Report findings:

   Validation Results for: <agent-name>
   
   [PASS] <filename> — no issues
   [FAIL] <filename> — <error message> (line X)
   [WARN] <filename> — <warning message> (line X)
   
   Summary: X files checked, Y errors, Z warnings