Horizon Fidelity Monitor
Watch long Claude or Codex threads for drift and coherence loss before bad merges or wrong assumptions ship.
Overview
Horizon Fidelity Monitor is a MCP server for the Operate phase that tracks real-time conversation health—drift, desync, and causal collapse—for any AI agent.
What is this MCP server?
- Hosted SSE MCP remote at horizon.leocelis.com with Bearer API key auth
- Tracks drift, desync, and causal collapse during live agent conversations
- Agent-agnostic: works with any MCP-capable client, not one IDE only
- Version 0.2.1 with docs at leocelis.github.io/horizon
- Request API keys via GitHub Discussions on leocelis/horizon
- Server version 0.2.1
- Remote transport: SSE at horizon.leocelis.com/sse
- GitHub repository: leocelis/horizon
What problem does it solve?
Long agent sessions quietly lose thread and cause expensive mistakes you only catch after the damage is done.
Who is it for?
Solo builders running lengthy Claude Code or Cursor agent sessions on real codebases who want a hosted monitor without building observability plumbing.
Skip if: Teams that only need one-off prompts with no multi-turn agents, or anyone who cannot use a hosted remote MCP with an API key.
What do I get? / Deliverables
You get live fidelity signals on active chats so you can pause, reset context, or correct course before bad outputs land in your repo.
- Live conversation health metrics during agent sessions
- Early warning on drift, desync, and causal collapse
- Hosted monitor without self-hosting fidelity infrastructure
Recommended MCP Servers
Journey fit
How it compares
Real-time conversation monitoring MCP, not a static code-review skill or test harness.
Common Questions / FAQ
Who is Horizon Fidelity Monitor for?
Indie developers and small teams using MCP agents who need visibility into conversation degradation during long tasks.
When should I use Horizon Fidelity Monitor?
Use it during extended agent runs—refactors, debugging marathons, or research loops—when coherence loss would be costly.
How do I add Horizon Fidelity Monitor to my agent?
Request an API key at github.com/leocelis/horizon/discussions, then register the SSE remote https://horizon.leocelis.com/sse with Authorization Bearer {api_key} in your MCP client.