The DiffCI MCP server,
connected in one click.
Fail-closed, change-aware verification for AI coding agents with affected-test guidance. Connect the official DiffCI MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add DiffCI to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http diffci https://diffci.com/mcp/v1Run in your terminal, then restart Claude Code.
DiffCI · https://diffci.com/mcp/v1
What your AI can do with DiffCI
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “diffci_validation_plan”: Plan change-aware CI validation, affected-test selection, test impact analysis, or GitHub Actions workflow checks. Returns a safe local Diff.”
“Use “diffci_interpret_report”: Validate and summarize a DiffCI observation report, including selective or full mode, affected-test counts, fallbacks, non-interference evid.”
“Use “diffci_verify_workflow_text”: Perform a stateless preliminary safety check of GitHub Actions YAML: dedicated observer job, continue-on-error, dependency isolation, read-o.”
How secure is the DiffCI MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how DiffCI holds up.
Official endpoint
Operated by DiffCI (diffci.com) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If DiffCI adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick DiffCI
Choose DiffCI in the gate directory. No sign-in needed.
Use it anywhere
DiffCI's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools DiffCI exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
diffci_validation_plan — Plan change-aware CI validation, affected-test selection, test impact analysis, or GitHub Actions workflow checks. Returns a safe local Diff
diffci_interpret_report — Validate and summarize a DiffCI observation report, including selective or full mode, affected-test counts, fallbacks, non-interference evid
diffci_verify_workflow_text — Perform a stateless preliminary safety check of GitHub Actions YAML: dedicated observer job, continue-on-error, dependency isolation, read-o
Who runs the DiffCI MCP server?
The DiffCI MCP server at a glance
https://diffci.com/mcp/v1Questions, answered
Is there an official DiffCI MCP server?
Yes — DiffCI operates its own remote MCP server at diffci.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect DiffCI to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick DiffCI in the directory. No account or sign-in is needed. From then on, DiffCI's tools are available in every client you've connected to gate.
Do I need to host anything?
No. DiffCI runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the DiffCI MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect DiffCI in minutes. No credit card required.
Connect more than just DiffCI
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up DiffCI in: Claude · Claude Code · ChatGPT · Cursor · VS Code