Add missing MCP properties to main workflow schema

[Copilot]

Four MCP properties (registry, allowed, entrypoint, mounts) were implemented in pkg/parser/mcp.go and pkg/workflow/mcp-config-custom.go but missing from the JSON schema, preventing schema validation and IDE autocompletion.

Changes

Updated pkg/parser/schemas/main_workflow_schema.json:

• Added to tools.additionalProperties (lines 3469-3510):

  • registry: string - MCP registry URI
  • allowed: array of strings - tool name allowlist
  • entrypoint: string - container entrypoint override
  • mounts: array with pattern ^[^:]+:[^:]+:(ro|rw)$ - volume mounts

• Added to stdio_mcp_tool definition (lines 6376-6396):

  • entrypoint: string - container entrypoint override
  • mounts: array with pattern validation - volume mounts format enforcement

Example

mcp-servers:
  example:
    registry: https://api.mcp.github.com/v0/servers/microsoft/markitdown
    container: example/mcp:latest
    entrypoint: /bin/sh
    mounts:
      - "/workspace:/workspace:rw"
      - "/config:/config:ro"
    allowed: ["read-file", "write-file"]

All properties now validate against the schema with pattern enforcement for mount syntax.

Original prompt

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This section details on the original issue you should resolve

<issue_title>[plan] Add missing MCP properties to main workflow schema</issue_title>
<issue_description>## Objective

Add 4 missing MCP properties to main_workflow_schema.json that are already implemented in the codebase but not validated by the schema.

Context

From discussion #11706: The main schema is missing registry, allowed, entrypoint, and mounts properties that are already implemented in pkg/parser/mcp.go, pkg/workflow/mcp-config-custom.go, and tested in mcp_config_compilation_test.go. This causes users to not discover these fields via schema validation.

Approach

Update pkg/parser/schemas/main_workflow_schema.json (lines 3398-3477) in the tools.additionalProperties section to include:

1. registry (string) - URI to installation location from MCP registry
2. allowed (array of strings) - List of allowed tool names
3. entrypoint (string) - Container entrypoint override
4. mounts (array) - Volume mounts with pattern ^[^:]+:[^:]+:(ro|rw)$

Files to Modify

• pkg/parser/schemas/main_workflow_schema.json - Add 4 missing properties to tools.additionalProperties

Acceptance Criteria

• registry property added with type string and description
• allowed property added as array of strings
• entrypoint property added with type string
• mounts property added as array with pattern validation
• All properties include examples matching existing documentation
• Schema remains valid JSON
• Run make build to embed updated schema

AI generated by Plan Command for discussion #11706

Comments on the Issue (you are @copilot in this section)

• Fixes [plan] Add missing MCP properties to main workflow schema #11707

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