update mcp docs

[adhami3310]

check reflex-dev/agent-skills#10 as well

[greptile-apps]

Greptile Summary

This PR updates the Reflex MCP documentation to reflect the new server URL (https://build.reflex.dev/mcp, replacing https://mcp.reflex.dev/mcp) and modernizes per-client installation instructions: Claude Desktop now uses the account-level Connectors UI, Windsurf now targets ~/.codeium/windsurf/mcp_config.json with the serverUrl key, and Codex now uses a native url entry in TOML instead of the npx mcp-remote bridge. Two now-redundant files from packages/integrations-docs are deleted as their content is served from docs/ai_builder/integrations/.

Confidence Score: 5/5

Safe to merge — documentation-only changes with no logic or runtime impact.

All URL updates are consistent across every file, and the revised client configurations (Windsurf serverUrl key, Codex native url field, Claude Desktop Connectors flow) were verified against their respective official documentation.

No files require special attention.

Important Files Changed

Filename	Overview
docs/ai_builder/integrations/ai_onboarding.md	Updates MCP server URL from mcp.reflex.dev to build.reflex.dev in the MCP tab snippet.
docs/ai_builder/integrations/mcp_installation.md	Updates MCP server URL, revamps Claude Desktop to use account-level Connectors UI, updates Windsurf config path/key, and simplifies Codex to native URL config; all verified against current official docs.
docs/ai_builder/integrations/mcp_overview.md	Single-line URL update from mcp.reflex.dev to build.reflex.dev.
packages/integrations-docs/src/integrations_docs/docs/mcp_installation.md	File deleted — content has been consolidated into docs/ai_builder/integrations/mcp_installation.md.
packages/integrations-docs/src/integrations_docs/docs/mcp_overview.md	File deleted — content has been consolidated into docs/ai_builder/integrations/mcp_overview.md.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[User configures MCP server URL] --> B[AI Tool connects to build.reflex.dev/mcp]
    B --> C{OAuth 2.1 check}
    C -->|Not authenticated| D[User logs in via browser]
    D --> E[Session stored by client]
    C -->|Authenticated| F[MCP tool call]
    E --> F
    F --> G[Reflex docs / component info returned]
    G --> H[AI-assisted Reflex development]

Loading

_{Reviews (1): Last reviewed commit: "update mcp docs" | Re-trigger Greptile}

[codspeed-hq]

Merging this PR will not alter performance

✅ 9 untouched benchmarks

---

_{Comparing update-mcp-docs (e29153d) with main (5496439)}

[Alek99]

I don't think this documentation sufficiently covers the landscape of code gen tooling see how they do it https://resend.com/mcp

We should update the MCP docs to cover the following.