How do I use christina?

1. Click on "Install Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@christina What's the blast radius of changing parse_request?" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

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christina

by amadeus-ex-machina

Overview Schema Related Servers Score Discussions

Python

Local

Project Christina: Autonomous Cognitive Amplifier

Python 3.11+ License: MIT Dependencies Tests FastMCP Compliant Code Style: Ponytail Ultra

Host: Google Antigravity Host: OpenCode Host: Claude Desktop Host: OpenAI Codex CLI

Quick Start • Architecture • MCP Tools • CLI Reference • Documentation • Contributing

🌟 Executive Overview: Eliminating Context Rot

Modern AI coding agents fail on large codebases ($10\text{M}+$ tokens) not due to reasoning limitations, but due to Context Rot: attention distraction, unindexed prompt pollution, lost architectural constraints across context wipes, and uncoordinated swarm collisions.

Project Christina solves this through an integrated, high-performance cognitive trinity:

RLM (Recursive Language Models — Context as a Variable): Moves massive codebases out of conversational prompt transcripts into sandboxed heap variables (context). Agents execute bounded sub-queries ($D \le 2, N \le 20$) and transactional copy-on-write (CoW) Python control loops with automated rollback.
Graphify (Deterministic CPG & AST Radar): Builds an in-memory SQLite3 WAL call graph delivering sub-0.3ms recursive CTE queries, transitive blast radius calculation, and God node centrality ranking with a 71.5x token discovery reduction.
OKF (Durable Semantic Memory & Epistemic Evolution): Sub-microsecond regex frontmatter parsing ($6.72\ \mu\text{s}$/doc), formal AGM belief revision, Ebbinghaus decay, and Mark-and-Sweep epistemic garbage collection with an automated $\le 400$-token post-compaction memory recovery anchor.
Cross-Project Epistemic Distillation: Anonymizes proprietary code into mathematical archetypes with a strict Zero-Information Leakage invariant ($\mathcal{I} = 0$), multi-base Shannon entropy secret scrubbing, and Bayesian invariant aggregation across code repositories.
Swarm Concurrency Control: Decentralized multi-agent execution using Kung-Robinson Optimistic Concurrency Control (OCC), Tree-CRDT 3-way AST merge, and Linda tuple-space blackboard.

🏛️ Tri-Pillar Cognitive Architecture

                                  ┌─────────────────────────────────────────┐
                                  │           SUPERVISOR / AGENT            │
                                  │  (Antigravity / OpenCode / Claude / AI) │
                                  └────────────────────┬────────────────────┘
                                                       │ JSON-RPC 2.0 (stdio)
                                                       ▼
┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│                                            PROJECT CHRISTINA FAST-MCP GATEWAY                                     │
├──────────────────────────────────────┬────────────────────────────────────┬───────────────────────────────────────┤
│          PILLAR 1: RLM ENGINE        │       PILLAR 2: GRAPHIFY CPG       │        PILLAR 3: OKF MEMORY           │
│         (Context as Variable)        │          (AST Code Radar)          │         (Semantic Evolution)          │
├──────────────────────────────────────┼────────────────────────────────────┼───────────────────────────────────────┤
│ • Out-of-core Heap Variables         │ • In-Memory SQLite3 WAL Graph      │ • Sub-microsecond OKF Regex Parser    │
│ • Transactional CoW Rollback         │ • Sub-0.3ms Transitive Blast Query │ • Formal AGM Belief Revision          │
│ • 3-Phase EGRI Invariant Linter      │ • Composite God-Node Centrality    │ • Ebbinghaus Forgetting & GC          │
│ • Dynamic Governor (D<=2, N<=20)     │ • Circular Dependency & Wave Sort  │ • Symbol-to-ADR Constraints           │
└──────────────────────────────────────┴────────────────────────────────────┴───────────────────────────────────────┘
                                                       │
                                                       ▼
┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│                                        DECENTRALIZED SWARM & DISTILLERY                                           │
├───────────────────────────────────────────────────────────────────┬───────────────────────────────────────────────┤
│                    SWARM CONCURRENCY BLACKBOARD                   │         GLOBAL EPISTEMIC DISTILLERY           │
├───────────────────────────────────────────────────────────────────┼───────────────────────────────────────────────┤
│ • Kung-Robinson Optimistic Concurrency Control (OCC)              │ • Zero-Information Leakage (I = 0)           │
│ • Semantic Tree-CRDT 3-Way AST Merge Resolution                   │ • Multi-Base Shannon Entropy Secret Redaction │
│ • Linda Tuple Space (`out`, `rd`, `in`, `eval`, `digest`)         │ • Bayesian Invariant Distillation (0700 Fence)│
└───────────────────────────────────────────────────────────────────┴───────────────────────────────────────────────┘

Mermaid Flowchart

flowchart TD
    Host[Host Agent Context] -->|JSON-RPC 2.0 stdio| MCP[Christina FastMCP Server]
    
    subgraph Trinity["Autonomous Cognitive Trinity"]
        MCP -->|cpg_query| CPG[Graphify CPG Radar<br/><i>sub-0.3ms SQLite WAL</i>]
        MCP -->|rlm_execute| RLM[RLM Sandbox<br/><i>Transactional CoW REPL</i>]
        MCP -->|memory_evolve| OKF[OKF Semantic Memory<br/><i>AGM Revision & Epistemic GC</i>]
    end
    
    subgraph SwarmDistill["Swarm & Cross-Project Substrate"]
        MCP -->|swarm_blackboard| OCC[Swarm Concurrency<br/><i>Kung-Robinson OCC + Tree-CRDT</i>]
        OKF -->|distill_global| Distill[Global Epistemic Distillery<br/><i>Anonymized Archetypes (I=0)</i>]
    end

    CPG -.->|Blast Radius & Waves| OCC
    RLM -.->|Isolated Sub-Calls| Host
    OKF -.->|ADR Anchor <=400 Tokens| Host

🚀 1-Command Zero-Friction Installation

Christina installs in seconds without background daemons, native compilation, or root privileges:

cd christina
./install.sh

Automated Diagnostic Preflight

./install.sh doctor

================================================================
 Christina Cognitive Amplifier Diagnostics (v1.0.0)
================================================================
✓ Python Version: 3.11+ (Requirement satisfied)
✓ SQLite3 in-memory WAL Engine: Ready
✓ OKF Semantic Memory Engine: Ready
✓ Google Antigravity Plugin: Registered
✓ OpenCode Plugin: Registered
✓ Global memory directory: ~/.config/christina/global_memory (0700 fenced)
================================================================
✅ All systems functional.

Run Full Test Suite (62/62 Passed in <1.2s)

./install.sh test
# Or with pytest directly:
pytest tests/ -v

🛠️ The Canonical FastMCP Tool Matrix

Christina exposes 4 unified JSON-RPC 2.0 stdio tools compatible with any MCP host:

Tool	Category	Key Capabilities & Modes	Performance Bound
`cpg_query`	AST Code Radar	`blast_radius`, `def_use`, `cfg`, `vinterfaces`, `god_nodes`, `cycles`, `waves`, `info`	$<0.3\text{ms}$ in-memory traversal
`rlm_execute`	Sandboxed Execution	Sub-agent MapReduce, transactional CoW REPL, 3-phase EGRI linting, compute governor	$D \le 2, N \le 20$ recursion bound
`memory_evolve`	Semantic Memory	`search`, `persist`, `revise` (AGM), `gc` (Ebbinghaus Mark-and-Sweep), `distill_global`, `query_global`	$6.72\ \mu\text{s}$/doc parsing
`swarm_blackboard`	Swarm Concurrency	`out`, `rd`, `in`, `eval`, `occ_validate` (Kung-Robinson OCC), `tree_merge` (Tree-CRDT), `digest`	Lock-free optimistic validation

MCP Tool Invocations

1. Blast Radius Analysis (`cpg_query`)

{
  "name": "cpg_query",
  "arguments": {
    "symbol": "PaymentGateway",
    "mode": "blast_radius",
    "depth": 3
  }
}

2. Transactional Sub-Query Execution (`rlm_execute`)

{
  "name": "rlm_execute",
  "arguments": {
    "query": "Audit error recovery handling in database connection pool",
    "scope_paths": ["src/db/", "src/pools/"]
  }
}

3. Semantic Memory Search with Symbol Constraint (`memory_evolve`)

{
  "name": "memory_evolve",
  "arguments": {
    "action": "search",
    "query": "zero-trust authentication policy",
    "linked_symbols": ["AuthMiddleware"]
  }
}

4. Swarm OCC Conflict Validation (`swarm_blackboard`)

{
  "name": "swarm_blackboard",
  "arguments": {
    "action": "occ_validate",
    "worker_id": "worker_security_audit",
    "read_version": 4,
    "read_set": ["AuthMiddleware", "SessionToken"],
    "write_set": ["AuthMiddleware"]
  }
}

⚡ CLI Quick Reference

# 1. Scan codebase and index AST knowledge graph into in-memory SQLite3 WAL
python3 -m christina.cli scan .

# 2. Calculate static blast radius for a target symbol
python3 -m christina.cli blast AuthService --depth 3

# 3. List top God Nodes ranked by composite degree centrality
python3 -m christina.cli god-nodes --limit 10

# 4. Search OKF institutional memory, ADRs, and symbol constraints
python3 -m christina.cli memory "connection pool timeout" --symbol DatabasePool

# 5. Run FastMCP JSON-RPC 2.0 stdio server
python3 -m christina.cli serve

# 6. Execute system diagnostics
python3 -m christina.cli doctor

🔌 Multi-Host Compatibility & Setup

Christina includes seamless 1-command registration across all standard AI agent hosts:

1. Google Antigravity CLI (`agy`)

Automatically symlinked to ~/.gemini/antigravity-cli/plugins/christina and registered in ~/.gemini/antigravity-cli/mcp_config.json.

2. OpenCode

Automatically registered in ~/.config/opencode/plugins/christina and ~/.config/opencode/opencode.json.

3. Claude Desktop

Automatically configured in ~/.claude/claude_desktop_config.json (or Library/Application Support/Claude/claude_desktop_config.json on macOS):

{
  "mcpServers": {
    "christina": {
      "command": "python3",
      "args": ["-m", "christina.bridge.mcp_server"],
      "env": {
        "PYTHONPATH": "/path/to/christina"
      }
    }
  }
}

4. OpenAI Codex CLI

Automatically registered in ~/.config/codex/config.json.

🪮 Ponytail Ultra: Zero-Dependency Guarantee

Project Christina is strictly engineered under Ponytail Ultra discipline:

Zero External Runtime Dependencies: Uses Python standard library only (ast, sqlite3, re, json, hashlib, fcntl, math, pathlib, typing).
Zero Heavy Daemons: No Docker, no Neo4j, no ChromaDB, no Redis. In-memory SQLite3 WAL and POSIX file locks deliver sub-millisecond execution with $0\text{MB}$ idle background RAM.
Strict Code Brevity: Every module is concise ($<250$ LOC), cohesive, and self-contained.

📚 Documentation & Guides

Document	Description
Getting Started Guide	Step-by-step setup, verification, and first agent workflow.
Skills Taxonomy	Progressive disclosure skill definitions (`cpg`, `rlm`, `memory`, `swarm`).
Contributing Guide	Ponytail Ultra development guidelines, Nix setup, test suites, and ADR workflow.
Security Policy	Zero-information leakage ($\mathcal{I} = 0$), Shannon entropy secret scrubbing, and containment.
Changelog	Detailed release notes and version history.

📜 License

Project Christina is distributed under the open-source MIT License.

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