# github_compare_commits

Compare two commits or branches to see differences

Agent View of the PolicyLayer registry record for `github_compare_commits`. HTML page: https://policylayer.com/tools/sagemcp-sagemcp/github-compare-commits

## Facts

- Tool: `github_compare_commits`
- Server: Sage MCP (`sagemcp/sagemcp`) — https://policylayer.com/tools/sagemcp-sagemcp.md
- Homepage: https://github.com/sagemcp/sagemcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "github_compare_commits",
    "arguments": {}
  }
}
```

## Why github_compare_commits is rated Low

This tool queries and retrieves commit metadata and diffs for comparison purposes. It has no side effects, does not modify repositories, and is purely informational. The operation is analogous to running 'git diff' locally or viewing a GitHub comparison page, which are standard read operations.

From the tool's own definition: "Tool name is 'github_compare_commits' and description states it will 'Compare two commits or branches to see differences' — a read-only operation that retrieves and displays diffs without modifying any data."

## Use case

AI agents call github_compare_commits to retrieve information from Sage MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Sage MCP:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "github_compare_commits": {}
  }
}
```

## Other tools on Sage MCP (358)

- `claude_code_delete_invite` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/claude-code-delete-invite.md
- `claude_code_remove_user` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/claude-code-remove-user.md
- `codex_delete_user` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/codex-delete-user.md
- `confluence_delete_page` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/confluence-delete-page.md
- `copilot_remove_seats` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/copilot-remove-seats.md
- `cursor_remove_member` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/cursor-remove-member.md
- `discord_delete_message` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/discord-delete-message.md
- `excel_clear_range` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/excel-clear-range.md
- `excel_delete_worksheet` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/excel-delete-worksheet.md
- `gmail_trash_message` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/gmail-trash-message.md
- `google_sheets_batch_update` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/google-sheets-batch-update.md
- `google_sheets_clear_range` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/google-sheets-clear-range.md
- `google_sheets_delete_sheet` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/google-sheets-delete-sheet.md
- `google_slides_delete_slide` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/google-slides-delete-slide.md
- `outlook_delete_message` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/outlook-delete-message.md
- `powerpoint_delete_presentation` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/powerpoint-delete-presentation.md
- `slack_reactions_remove` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/slack-reactions-remove.md
- `zoom_delete_meeting` — Destructive — https://policylayer.com/tools/sagemcp-sagemcp/zoom-delete-meeting.md
- `bitbucket_trigger_pipeline` — Execute — https://policylayer.com/tools/sagemcp-sagemcp/bitbucket-trigger-pipeline.md
- `excel_run_formula` — Execute — https://policylayer.com/tools/sagemcp-sagemcp/excel-run-formula.md
- `gitlab_retry_pipeline` — Execute — https://policylayer.com/tools/sagemcp-sagemcp/gitlab-retry-pipeline.md
- `copilot_add_seats` — Financial — https://policylayer.com/tools/sagemcp-sagemcp/copilot-add-seats.md
- `cursor_set_user_spend_limit` — Financial — https://policylayer.com/tools/sagemcp-sagemcp/cursor-set-user-spend-limit.md
- `bitbucket_get_diff` — Read — https://policylayer.com/tools/sagemcp-sagemcp/bitbucket-get-diff.md
- `bitbucket_get_file` — Read — https://policylayer.com/tools/sagemcp-sagemcp/bitbucket-get-file.md
- `bitbucket_get_issue` — Read — https://policylayer.com/tools/sagemcp-sagemcp/bitbucket-get-issue.md
- `bitbucket_get_pipeline` — Read — https://policylayer.com/tools/sagemcp-sagemcp/bitbucket-get-pipeline.md
- `bitbucket_get_pull_request` — Read — https://policylayer.com/tools/sagemcp-sagemcp/bitbucket-get-pull-request.md
- `bitbucket_get_repository` — Read — https://policylayer.com/tools/sagemcp-sagemcp/bitbucket-get-repository.md
- `bitbucket_list_branches` — Read — https://policylayer.com/tools/sagemcp-sagemcp/bitbucket-list-branches.md
- …and 328 more: https://policylayer.com/tools/sagemcp-sagemcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=sagemcp-sagemcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/sagemcp-sagemcp