Document MCP tool modes and on-demand tool discovery - #798
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Pull request overview
Updates the Directus docs to explain the new MCP “tool registry” approach (default vs tool_mode=registry) and aligns AI Assistant guidance with on-demand tool discovery, including troubleshooting and security implications of registry mode.
Changes:
- Documented MCP tool modes (default vs registry), including the
search→ tool-details →executeflow and trade-offs. - Added troubleshooting and security guidance specific to registry mode (notably around approvals for
execute). - Refined AI Assistant tips/tools/setup language around on-demand tool discovery and disabling tools for capability-limiting (not cost).
Reviewed changes
Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
| content/guides/12.ai/2.mcp/1.installation.md | Adds “Choose a Tool Mode” section and registry-mode guidance; also updates examples/settings tables. |
| content/guides/12.ai/2.mcp/3.tools.md | Introduces “Tool Modes” section describing default vs registry behavior and trade-offs. |
| content/guides/12.ai/2.mcp/5.troubleshooting.md | Adds a troubleshooting entry explaining why only three tools appear in registry mode. |
| content/guides/12.ai/2.mcp/7.security.md | Adds a registry-mode-specific warning about auto-approving execute. |
| content/guides/12.ai/1.assistant/1.setup.md | Updates the default system prompt template and cost guidance bullets. |
| content/guides/12.ai/1.assistant/3.tools.md | Clarifies on-demand tool discovery and reframes disabling tools as a capability restriction. |
| content/guides/12.ai/1.assistant/4.tips.md | Refines best practices and revises cost/tool-disable guidance to match on-demand loading. |
Suppressed comments (1)
content/guides/12.ai/2.mcp/1.installation.md:382
- The
chatexample block is malformed (## :::chatheading + missing opening---frontmatter delimiter). Other pages use the:::chatcomponent with---delimiters; as-is this will likely render as plain text instead of a chat component.
## :::chat
chatId: "verify-connection"
messages:
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JamesW1
approved these changes
Aug 19, 2026
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LGTM if fix the formatting issue mentioned in comments
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Documents the search-first tool registry from directus/directus#27797.
tool_mode=registry(search,execute,schema), when to use each, and the approval trade-offs