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Refactor/pure mcp runtime #139

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0415c13
chore: add pure MCP refactor script
ssfxx0923 Aug 7, 2026
6f365b1
docs: add pure MCP refactor notes
ssfxx0923 Aug 7, 2026
537b165
ci: apply and verify pure MCP refactor
ssfxx0923 Aug 7, 2026
81d43b2
feat: add pure native MCP mode alias
ssfxx0923 Aug 7, 2026
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52 changes: 52 additions & 0 deletions .github/workflows/pure-mcp-refactor.yml
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Original file line number Diff line number Diff line change
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name: Apply pure MCP refactor

on:
push:
branches:
- refactor/pure-mcp-runtime
paths:
- scripts/refactor-pure-mcp.mjs
- .github/workflows/pure-mcp-refactor.yml

permissions:
contents: write

jobs:
refactor:
if: github.actor != 'github-actions[bot]'
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
with:
ref: refactor/pure-mcp-runtime
fetch-depth: 0
Comment on lines +19 to +22

@coderabbitai coderabbitai Bot Aug 7, 2026

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🔒 Security & Privacy | 🟠 Major | ⚡ Quick win

Do not persist the write token during repository script execution.

actions/checkout persists the contents: write token in Git configuration. node scripts/refactor-pure-mcp.mjs and npm ci then run before the intended push step. Set persist-credentials: false. Provide the token only to the final git push command.

🧰 Tools
🪛 zizmor (1.29.0)

[warning] 19-22: credential persistence through GitHub Actions artifacts (artipacked): does not set persist-credentials: false

(artipacked)

🤖 Prompt for AI Agents 
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In @.github/workflows/pure-mcp-refactor.yml around lines 19 - 22, Update the
actions/checkout step in the workflow to set persist-credentials to false,
preventing the write token from being stored during npm ci and node
scripts/refactor-pure-mcp.mjs. Pass the token explicitly only to the final git
push command.

Source: Linters/SAST tools


- uses: actions/setup-node@v4
with:
node-version: 22
cache: npm

- name: Apply deterministic refactor
run: node scripts/refactor-pure-mcp.mjs

- name: Refresh lockfile and install
run: |
npm install --package-lock-only --ignore-scripts
npm ci

- name: Typecheck
run: npm run typecheck

- name: Test
run: npm test

- name: Build
run: npm run build

- name: Commit verified refactor
run: |
git config user.name "github-actions[bot]"
git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
git add -A
git commit -m "refactor: make DevSpace a pure MCP runtime"
git push origin HEAD:refactor/pure-mcp-runtime
Comment on lines +46 to +52

@coderabbitai coderabbitai Bot Aug 7, 2026

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🩺 Stability & Availability | 🟡 Minor | ⚡ Quick win

Handle an already-applied refactor before committing.

A push that changes only this workflow still triggers the job. If the refactor and lockfile are already current, git commit exits with status 1 and marks the workflow as failed. Exit successfully when the staged diff is empty.

Proposed fix 
           git config user.email "41898282+github-actions[bot]`@users.noreply.github.com`"
           git add -A
+          if git diff --cached --quiet; then
+            echo "No refactor changes to commit"
+            exit 0
+          fi
           git commit -m "refactor: make DevSpace a pure MCP runtime"
           git push origin HEAD:refactor/pure-mcp-runtime
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
- name: Commit verified refactor
run: |
git config user.name "github-actions[bot]"
git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
git add -A
git commit -m "refactor: make DevSpace a pure MCP runtime"
git push origin HEAD:refactor/pure-mcp-runtime
- name: Commit verified refactor
run: |
git config user.name "github-actions[bot]"
git config user.email "41898282+github-actions[bot]`@users.noreply.github.com`"
git add -A
if git diff --cached --quiet; then
echo "No refactor changes to commit"
exit 0
fi
git commit -m "refactor: make DevSpace a pure MCP runtime"
git push origin HEAD:refactor/pure-mcp-runtime
🤖 Prompt for AI Agents 
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In @.github/workflows/pure-mcp-refactor.yml around lines 46 - 52, Update the
“Commit verified refactor” step so it checks whether staging via git add -A
produced any changes before running git commit. When the staged diff is empty,
skip the commit and push path and exit successfully; retain the existing commit
and push behavior when changes are present.

34 changes: 34 additions & 0 deletions docs/pure-mcp-refactor-plan.md
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# Pure MCP Runtime Refactor

This branch changes DevSpace from an agent orchestrator into a local MCP execution runtime.

## Goal

Use the MCP host (for example ChatGPT) as the reasoning and coding agent. DevSpace only provides:

- workspace lifecycle
- files and search
- patches
- native shell execution
- persistent processes
- Git worktrees
- authentication
- review UI

## Removed concept

DevSpace no longer starts local model providers. Codex, Claude Agent SDK, OpenCode, Cursor/Copilot ACP, and similar adapters are not part of this runtime.

## Native mode

`DEVSPACE_TOOL_MODE=native` exposes a CLI-like environment. The host can use normal development commands and does not receive artificial instructions to avoid shell file operations.

The security boundary remains explicit:

- structured file tools are workspace-scoped;
- shell commands run with local user authority;
- worktrees provide change isolation, not OS sandboxing.

## Migration

Existing `DEVSPACE_TOOL_MODE=codex` configuration maps to `native` for compatibility.
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