Loop Breaker
Catch AI agent loops: halt runs that repeat the same failing step or tool call.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"loop": {
"url": "https://loop.cloudforbots.com/mcp"
}
}
}Remote endpoints
https://loop.cloudforbots.com/mcpstreamable-httpWhat it can do
Tool inventory
Tools (4)
🟢check_step(run_id, tool, args, error, max_failures, ...)
Call AFTER each tool call or agent step with what you just did and whether it failed. Loop Breaker fingerprints the call (tool + normalized args + error) and returns verdict ok, loop_detected or halted. Pro: on a loop, halt=true; stop the run, do not retry, and tell your user what repeated. Free watch-only: never halts, returns would_halt and logs it for the weekly report.
Input Schema
{
"type": "object",
"properties": {
"run_id": {
"type": "string",
"description": "Any stable id for this agent run, e.g. \"nightly-sync-2026-10-15\". Use the same id for every step of the run (and its sub-agents)."
},
"tool": {
"type": "string",
"description": "The tool or step name you just ran, e.g. \"browser.click\" or \"git push\"."
},
"args": {
"description": "The arguments you passed (object or string). Volatile values like timestamps and ids are normalized away."
},
"error": {
"type": "string",
"description": "The error message if the step failed. Omit or empty if it succeeded."
},
"max_failures": {
"type": "integer",
"description": "Same failing call this many times = loop. Default 3 (min 2, max 20)."
},
"max_repeats": {
"type": "integer",
"description": "Same call this many times in a row (even if it succeeds) = loop. Default 5 (min 3, max 50)."
}
},
"required": [
"run_id",
"tool"
]
}🟢loop_status(run_id)
Show a run's loops so far, whether it is halted, and its last 10 steps.
Input Schema
{
"type": "object",
"properties": {
"run_id": {
"type": "string",
"description": "Any stable id for this agent run, e.g. \"nightly-sync-2026-10-15\". Use the same id for every step of the run (and its sub-agents)."
}
},
"required": [
"run_id"
]
}🟢weekly_report
Draft a plain-English report of the last 7 days for your key (or IP): runs, loops caught, wasted repeat steps, and the worst offenders. Read-only; sends nothing. Show it to your user.
Input Schema
{
"type": "object",
"properties": {}
}🟢usage_and_upgrade
Show today's usage for your key or IP and the $49/month All Access upgrade link (cloudforbots.com/offer). Free tier: 500 calls/day. Not metered.
Input Schema
{
"type": "object",
"properties": {}
}Community
Evidence