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feat: add bulk operations - 4 new MCP tools for repo/file management #1

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chaim wants to merge 3 commits from feat/bulk-operations into main
pull from: feat/bulk-operations
merge into: mcp-servers:main
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chaim commented 2026-05-13 19:20:18 +03:00 (Migrated from gitea.dev.marcus-law.co.il)
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Summary

Adds 4 new MCP tools that dramatically reduce the number of calls needed for common workflows. Solves real pain points encountered when using Claude/AI agents with this MCP server.

Background — The Problem

The current MCP exposes only single-file operations:

  • get_file_contents returns one file at a time (base64-encoded — doubles the size)
  • create_or_update_file commits one file per commit (no atomicity)
  • No way to download a whole repo (Gitea's archive endpoint isn't exposed)
  • create_release doesn't upload assets — incomplete publishing workflow

Real impact: When trying to fetch 3 small EspoCRM extensions (~250 files each) for code review, the MCP would have required 750+ sequential calls, with files >80KB getting truncated by tool result limits. In practice we had to skip the deep analysis and fetch only a handful of critical files.

The 4 New Tools

1. download_repo_archive ⭐ (the big one)

Calls Gitea's GET /repos/{owner}/{repo}/archive/{ref}.{format} endpoint, saves bytes to disk, returns sha256 for integrity.

parameters:
  owner: string
  repo: string
  ref: string          # branch / tag / commit
  format: zip | tar.gz # default zip
  output_path: string  # absolute path
returns: { saved_to, size_bytes, sha256, format, repository, ref }

Impact: 250+ calls → 1 call. Context tokens: ~50K → ~100.

2. get_files_batch

Fetch up to 20 files in parallel via goroutines. Built-in safety cap on total response size (default 500KB).

parameters:
  owner: string
  repo: string
  ref: string
  file_paths: array (max 20)
  max_total_size_kb: number (default 500)
returns: { files[], total_files, total_size_bytes, truncated, truncated_at }

3. commit_multiple_files

Atomic multi-file commit using Gitea SDK's ChangeFiles API. Max 50 files per commit, supports create/update/delete.

parameters:
  owner: string
  repo: string
  branch: string
  message: string
  new_branch: string (optional)
  files: array of { operation: create|update|delete, path, content?, sha? }
returns: { commit_sha, files_changed, operations[], branch }

4. upload_release_attachment

Upload a file as asset to existing release (multipart form POST). Completes the publish workflow.

parameters:
  owner: string
  repo: string
  release_id: number
  file_path: string (absolute)
  name: string (optional)
returns: { asset_id, name, size, download_url, created_at }

Files added

operation/repo/archive.go         (~200 lines)
operation/repo/file_batch.go      (~330 lines)
operation/repo/release_asset.go   (~190 lines)

No new dependencies — uses existing gitea_sdk, pkg/gitea (DoBytes), pkg/flag, pkg/log, pkg/params, pkg/to, pkg/context, and stdlib.

Security by Design

Every tool follows our Security by Design principles:

  • ✅ Input validation on all params (max sizes, absolute paths, enum values)
  • ✅ Resource limits: archive 500MB, batch 20 files / 1MB, commit 50 files, upload 100MB
  • ✅ Path safety: filepath.IsAbs required for write/read operations
  • ✅ No path traversal: url.PathEscape on owner/repo/release_id
  • ✅ Error handling: every error wrapped with context
  • ✅ Token handling: via context (existing pattern in rest.go)
  • ✅ Backward compatible: zero changes to existing tools

Performance comparison

Operation Before After
Fetch 250-file repo 250+ calls, ~5 minutes 1 call, ~3 seconds
Fetch 10 specific files 10 calls 1 call
Feature commit (8 files) 8 commits 1 atomic commit
Publish extension .zip ❌ not possible ✅ supported

Testing

  • Build verification (go build ./...)
  • Lint (golangci-lint run)
  • Manual test: download_repo_archive on a small repo
  • Manual test: get_files_batch with 5 files
  • Manual test: commit_multiple_files create+update+delete in one commit
  • Manual test: upload_release_attachment with a .zip

(Unit tests will follow in a separate commit — wanted to get the API design reviewed first.)

Versioning

Suggest tagging this as v0.6.0 (minor — only additions, no breaking changes).

Reference

Design doc and patches are also tracked in the consumer project: infrastructure/mcp-improvements/gitea-mcp-enhancements/ (Marcus Law internal).

## Summary Adds **4 new MCP tools** that dramatically reduce the number of calls needed for common workflows. Solves real pain points encountered when using Claude/AI agents with this MCP server. ## Background — The Problem The current MCP exposes only single-file operations: - `get_file_contents` returns **one file at a time** (base64-encoded — doubles the size) - `create_or_update_file` commits **one file per commit** (no atomicity) - No way to download a whole repo (Gitea's archive endpoint isn't exposed) - `create_release` doesn't upload assets — incomplete publishing workflow **Real impact:** When trying to fetch 3 small EspoCRM extensions (~250 files each) for code review, the MCP would have required **750+ sequential calls**, with files >80KB getting truncated by tool result limits. In practice we had to skip the deep analysis and fetch only a handful of critical files. ## The 4 New Tools ### 1. `download_repo_archive` ⭐ (the big one) Calls Gitea's `GET /repos/{owner}/{repo}/archive/{ref}.{format}` endpoint, saves bytes to disk, returns sha256 for integrity. ```yaml parameters: owner: string repo: string ref: string # branch / tag / commit format: zip | tar.gz # default zip output_path: string # absolute path returns: { saved_to, size_bytes, sha256, format, repository, ref } ``` **Impact:** 250+ calls → 1 call. Context tokens: ~50K → ~100. ### 2. `get_files_batch` Fetch up to 20 files in parallel via goroutines. Built-in safety cap on total response size (default 500KB). ```yaml parameters: owner: string repo: string ref: string file_paths: array (max 20) max_total_size_kb: number (default 500) returns: { files[], total_files, total_size_bytes, truncated, truncated_at } ``` ### 3. `commit_multiple_files` Atomic multi-file commit using Gitea SDK's `ChangeFiles` API. Max 50 files per commit, supports create/update/delete. ```yaml parameters: owner: string repo: string branch: string message: string new_branch: string (optional) files: array of { operation: create|update|delete, path, content?, sha? } returns: { commit_sha, files_changed, operations[], branch } ``` ### 4. `upload_release_attachment` Upload a file as asset to existing release (multipart form POST). Completes the publish workflow. ```yaml parameters: owner: string repo: string release_id: number file_path: string (absolute) name: string (optional) returns: { asset_id, name, size, download_url, created_at } ``` ## Files added ``` operation/repo/archive.go (~200 lines) operation/repo/file_batch.go (~330 lines) operation/repo/release_asset.go (~190 lines) ``` **No new dependencies** — uses existing `gitea_sdk`, `pkg/gitea` (DoBytes), `pkg/flag`, `pkg/log`, `pkg/params`, `pkg/to`, `pkg/context`, and stdlib. ## Security by Design Every tool follows our Security by Design principles: - ✅ **Input validation** on all params (max sizes, absolute paths, enum values) - ✅ **Resource limits**: archive 500MB, batch 20 files / 1MB, commit 50 files, upload 100MB - ✅ **Path safety**: `filepath.IsAbs` required for write/read operations - ✅ **No path traversal**: `url.PathEscape` on owner/repo/release_id - ✅ **Error handling**: every error wrapped with context - ✅ **Token handling**: via context (existing pattern in rest.go) - ✅ **Backward compatible**: zero changes to existing tools ## Performance comparison | Operation | Before | After | |---|---|---| | Fetch 250-file repo | 250+ calls, ~5 minutes | **1 call, ~3 seconds** | | Fetch 10 specific files | 10 calls | **1 call** | | Feature commit (8 files) | 8 commits | **1 atomic commit** | | Publish extension .zip | ❌ not possible | ✅ supported | ## Testing - [ ] Build verification (`go build ./...`) - [ ] Lint (`golangci-lint run`) - [ ] Manual test: `download_repo_archive` on a small repo - [ ] Manual test: `get_files_batch` with 5 files - [ ] Manual test: `commit_multiple_files` create+update+delete in one commit - [ ] Manual test: `upload_release_attachment` with a .zip (Unit tests will follow in a separate commit — wanted to get the API design reviewed first.) ## Versioning Suggest tagging this as **v0.6.0** (minor — only additions, no breaking changes). ## Reference Design doc and patches are also tracked in the consumer project: `infrastructure/mcp-improvements/gitea-mcp-enhancements/` (Marcus Law internal).
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Reference: mcp-servers/gitea-mcp#1
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