The Snapback MCP server,
connected in one click.
Diagnose why an AI agent failed and get the verified fix instantly. Free, no token. Connect the official Snapback 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 Snapback 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 snapback https://api.snapback.sh/mcpRun in your terminal, then restart Claude Code.
Snapback · https://api.snapback.sh/mcp
What your AI can do with Snapback
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “diagnose_trace”: Diagnose why an AI agent run failed. Returns a structured verdict (failure_class, failed_at_step, root_cause, fix_suggestion, confidence). L.”
“Use “diagnose_batch”: Diagnose SEVERAL traces in one call (up to 20). Each trace is metered like a separate diagnose_trace. Returns a verdicts array (per-trace, o.”
“Use “get_verdict”: Fetch a previously produced verdict by its id or by trace_id (your org only).”
“Use “preflight”: BEFORE running: get known failure patterns for a given agent setup so you can avoid them. Returns a ranked list of {failure_class, root_caus.”
How secure is the Snapback MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Snapback holds up.
Security grade A
gate scanned 23 tools on Sep 24, 2026 for prompt injection and risky tool definitions — nothing to flag.
Official endpoint
Operated by Snapback (snapback.sh) 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 Snapback 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 Snapback
Choose Snapback in the gate directory. No sign-in needed.
Use it anywhere
Snapback'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 Snapback exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
diagnose_trace — Diagnose why an AI agent run failed. Returns a structured verdict (failure_class, failed_at_step, root_cause, fix_suggestion, confidence). L
diagnose_batch — Diagnose SEVERAL traces in one call (up to 20). Each trace is metered like a separate diagnose_trace. Returns a verdicts array (per-trace, o
get_verdict — Fetch a previously produced verdict by its id or by trace_id (your org only).
preflight — BEFORE running: get known failure patterns for a given agent setup so you can avoid them. Returns a ranked list of {failure_class, root_caus
submit_feedback — Tell Snapback whether a verdict was correct (correct=true/false), with an optional free-text note (did the fix work? what was wrong?). ONE r
get_request_status — Check what happened to a pattern you requested (from request_pattern's request_id). Returns pending / approved / rejected / in_library so yo
my_usage — See YOUR current usage + remaining allowance so you can self-govern spend: snapbacks (diagnoses) used/cap/remaining, guard checks used/cap/r
my_impact — See how your feedback + pattern requests have shaped the shared library — how many verdicts you've rated, patterns you've requested, and how
+ 15 more tools once connected
Who runs the Snapback MCP server?
The Snapback MCP server at a glance
https://api.snapback.sh/mcpQuestions, answered
Is there an official Snapback MCP server?
Yes — Snapback operates its own remote MCP server at api.snapback.sh. 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 Snapback to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Snapback in the directory. No account or sign-in is needed. From then on, Snapback's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Snapback runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Snapback 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 Snapback in minutes. No credit card required.
Connect more than just Snapback
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Snapback in: Claude · Claude Code · ChatGPT · Cursor · VS Code