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Faultline

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Check infrastructure health, manage incidents, and run runbooks in Faultline.

Source code Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http faultline 'https://mcp.fltln.io/mcp' --header 'X-API-Key: <Faultline API key (flt_...) from Settings → API Keys in the Faultline dashboard>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "faultline": {
            "type": "http",
            "url": "https://mcp.fltln.io/mcp",
            "headers": {
                "X-API-Key": "<Faultline API key (flt_...) from Settings → API Keys in the Faultline dashboard>"
            }
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Faultline MCP Server
  2. Setup
  3. Tools
  4. Security
  5. Support

Faultline MCP Server

Faultline is infrastructure monitoring and incident management for DevOps/SRE teams. This repo documents faultline-mcp — Faultline's remote MCP server, which lets AI agents (Claude, Claude Code, Claude Desktop, or anything MCP-compatible) operate Faultline: check infrastructure health, inspect and act on incidents, look up who's on call, and run approved runbooks.

This repo is documentation only. The server is hosted by Faultline at https://mcp.fltln.io/mcp (Streamable HTTP transport) — there's nothing to install or run yourself.

Setup

  1. Create an API key in Faultline: Settings → API Keys. Keys look like flt_....
  2. Point your MCP client at https://mcp.fltln.io/mcp, sending the key as either X-API-Key: flt_... or Authorization: Bearer flt_....

Claude Code:

claude mcp add --transport http faultline-mcp https://mcp.fltln.io/mcp \
  --header "X-API-Key: flt_..."

Clients that take raw JSON config (Claude Desktop, etc.):

{
  "mcpServers": {
    "faultline": {
      "type": "http",
      "url": "https://mcp.fltln.io/mcp",
      "headers": { "X-API-Key": "flt_..." }
    }
  }
}

Tools

ToolWhat it does
list_servicesMonitor inventory with current status (optional status filter)
get_serviceOne service + its 10 most recent checks (for diagnosis)
list_incidentsOpen incidents (or status: "resolved" for history)
get_incidentFull incident record: timeline, AI summary, post-mortem
acknowledge_incidentAcknowledge an incident — stops further escalation
resolve_incidentResolve with an optional note (recorded on the timeline)
who_is_on_callCurrent on-call per schedule, with shift end time
list_anomaliesRecent learned-baseline latency anomalies (observed vs baseline, z-score, hours sustained, auto-opened incident if any)
diagnose_incidentRecommend the next action (run runbook / escalate / resolve / wait) + candidate runbooks. Analysis only — changes nothing
run_runbookExecute one chosen runbook against an incident — mutates infrastructure (can restart/scale services)

Security

  • Scoped to your API key. The server never stores your key — it's used only for the duration of each request, proxied straight through to Faultline's API.
  • Approval-gated mutation. run_runbook is the only tool that changes infrastructure. Its description instructs the calling agent to use it only after diagnose_incident recommended it and you've explicitly confirmed.
  • Tenant-isolated. Every request is scoped to the tenant that owns the API key — one key can never see or affect another tenant's data.

Support

Questions or issues: support@fltln.io or the Faultline dashboard.

Frequently asked questions

What is Faultline?

Check infrastructure health, manage incidents, and run runbooks in Faultline.

How do I install Faultline?

It runs as a remote server. In Claude Code: claude mcp add --transport http faultline 'https://mcp.fltln.io/mcp' --header 'X-API-Key: <Faultline API key (flt_...) from Settings → API Keys in the Faultline dashboard>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Faultline need an API key?

Yes. It expects X-API-Key, which you set in its configuration.

Is Faultline open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains Faultline?

It is published by fltln-io. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.