Korg Recall MCP server

korg

A causally-ordered, rewindable event-ledger for autonomous AI agents. Every step your AI agent takes, recorded in a hash-chained ledger you can independently verify — tamper-evident, zero trust, no blockchain.

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AI agents are black boxes. When they fail, you can't debug. When they succeed, you can't reproduce it.

When they do something wrong, you can't undo it.

Korg fixes this.

What Korg Does

[!NOTE]

Universal Ingestion Integration Mode:

Korg v1 is an MCP-callable audit sink. Any MCP-compatible coding agent (Claude Code, Codex, etc.) can call korg's tools to record its session as a causally-linked, replayable, rewindable ledger. The agent must be instructed to log its actions — typically via system prompt or MCP server configuration. Fully passive auditing without agent cooperation is on the roadmap for future versions.

[!WARNING]

Trust Boundary & Deployment Scope:

Korg v1 is designed strictly for local, single-user workspaces. Multi-tenant and networked deployments require cryptographic authentication and permission bounds that are not yet shipped. Running the server on an untrusted or public network exposes workspace read/write access.

Korg is a cognitive hypervisor — a runtime layer that sits beneath your AI agents and governs every decision they make.

It doesn't replace your LLM. It governs what the LLM does.

Foundation Model          →  predicts, suggests, generates
────────────────────────────────────────────────────────────
Korg Cognitive Runtime    →  schedules, validates, isolates,
                             reconciles, replays, heals, governs

Every agent action is:

• Appended to an immutable, cryptographically-signed ledger
• Ordered with Hybrid Logical Clocks (causal, deterministic, globally consistent)
• Replayable — rebuild exact state at any point in history
• Reversible — rewind the ledger to any prior sequence point

Try the Time-Travel Demo

You can run the built-in sandbox demo to see cognitive time-travel in action. The demo sets up a temporary workspace with a buggy Python script, lets a simulated coding agent make a wrong edit, catches the test failure, rewinds the workspace and ledger to before the edit, and speculatively commits the correct fix:

cargo run -- demo

You will see the complete, colorized time-travel sequence:

⚡ STARTING KORG COGNITIVE TIME-TRAVEL DEMO ⚡
────────────────────────────────────────────────────────────────────────────────
[korg] Initializing sandboxed demo environment...
[korg] Created temporary workspace with math_utils.py (subtraction bug present).

🚀 PHASE 1: AGENT INITIATES RUN (WRONG PATH)
  [seq 390] actor: agent:claude-code@0.2.29 | tool: user_prompt | prompt: "Fix subtraction bug and verify tests pass"
  [seq 391] actor: agent:claude-code@0.2.29 | tool: Read        | file: math_utils.py
  [seq 392] actor: agent:claude-code@0.2.29 | tool: Edit        | result: "Modified return a + b (wrong fix)"
  [seq 393] actor: agent:claude-code@0.2.29 | tool: Bash        | command: "pytest" -> ❌ FAILED (2 tests failed)

Shortened. The full README is on GitHub.