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Diffgate

Deterministic guardrail your coding agent runs on itself: diff-scoped findings, zero LLM tokens.

Connector by srbsa · GitHub account verified by the MCP Registry

IndexedApache-2.0Local (stdio)★ 5
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Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/srbsa-diffgate

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Deterministic guardrail your coding agent runs on itself: diff-scoped findings, zero LLM tokens.

Reviews

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools
9 read · 1 write · 0 delete · 1 not yet classified
Secrets
None asked for
Install scripts
Not scanned yet
Runs as
Node.js package

Tools by what they do 11

Read from the source code; the running server may list different tools.

Read 9 · Look things up without changing anything.

  • diffgate_analyze
  • diffgate_capabilities
  • diffgate_check_staged
  • diffgate_deep_review
  • diffgate_explain
  • diffgate_guidelines
  • find_references
  • grep
  • read_file

Write 1 · Create, change, send or run things.

  • diffgate_feedback

Not yet classified 1 · We could not tell from the name and description.

  • git_blame

Files it touches

  • Any path the agent passes to its tools

Tools (11)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

  • diffgate_analyzeAnalyze a fileread-only

    Analyze a file for code review findings. Only flags risk on lines changed vs the git baseline (diff-aware). Pass `content` to analyze unsaved or generated code before it is written to disk. When a code graph is available, public-surface findings carry an `impact` field (caller count, suggested reviewers, test gaps) and may be tier-adjusted — fix high-blast-radius findings before surfacing the code.

  • diffgate_capabilitiesReport active capabilitiesread-only

    Report which DiffGate layers are active (core / code graph / LLM), which tools you can call right now without an error, and the agent autonomy budget (fix limit, escalation, trust source). Call this once up front so you know what's available instead of discovering it via thrown errors.

  • diffgate_check_stagedCheck staged or working diffread-only

    Check all staged (or working-tree) changes in a git repo for DiffGate findings. Returns overall tier, counts, and per-file findings across the whole diff, plus a `verdict` block (the agent autonomy ladder: pass/review/blocked overall, with a rung — block/escalate/autofix/advisory — per finding) so you can decide whether to surface the diff without reimplementing the rules.

  • diffgate_deep_reviewDeep-review a findingread-only

    Run an agentic deep review on a single high-impact (orange) finding. The model uses real repo tools (grep, read_file, find_references, git_blame) to investigate blast radius before rendering a verdict.

  • diffgate_explainExplain a findingread-only

    Get a concise AI explanation for a DiffGate finding. Faster than diffgate_deep_review — a single LLM call with no tool loops.

  • diffgate_feedbackRecord a reviewer verdict

    Record a reviewer's verdict on a finding so DiffGate learns. verdict 'dismiss' suppresses that same flagged code (ruleId + code) in future reviews (noise reduction); 'confirm' marks it as a real, valued catch. Stored in .diffgate/learnings.json at the repo root.

  • diffgate_guidelinesReview against repo guidelinesread-only

    Review the diff against the repo's own coding guideline files (AGENTS.md, CLAUDE.md, .cursorrules, etc.), scoped per directory (nearest file wins). IMPORTANT: if the result has mode='host', NO external model was used — this is a SELF-REVIEW, not an independent gate: YOU (the calling agent) evaluate each group's `hunks` against its `guidelines` text using your own model. Treat host-mode results as ADVISORY only — never block the change on them. If mode='model', findings were produced by the configured provider and are returned directly.

  • find_references

    Find references to a symbol name across the repository (whole-word search).

  • git_blame

    Who last changed a specific line (author, commit, summary).

  • grep

    Search the repository with an extended-regex pattern. Returns matching file:line:text.

  • read_file

    Read a file (optionally a line range, max 200 lines) from the repository.

Signals

Stars
5
Forks
0
Open issues
0
Last commit
Jul 27, 2026 (3 months ago)
Last release
Jul 28, 2026 (3 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name
io.github.srbsa/diffgate
Version
0.8.0
Auth
No auth
Packages
npm diffgate-review
License
Apache-2.0
Repository
github.com/srbsa/diffgate
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
Official MCP Registrygithub-graphql

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Diffgate MCP server. Agent Mart. https://agentmart.dev/connectors/srbsa-diffgate (last updated 2026-10-24)