CLAUDE CODE INTEGRATION

Claude Code Integration

Slash Claude 3.7 Sonnet context window bloat by 90%. Eliminate prompt saturation, accelerate turn latency from 45s to 4s, and stop context degradation in large codebases.

$ claude mcp add siftrcode -- npx -y siftrcode mcp

Interactive Live Demo →

10-Second Setup for Claude Code

Connect SiftrCode to your Claude Code CLI environment in seconds.

Add SiftrCode to Claude Code CLI

RECOMMENDED

Run the standard Claude Code MCP registration command from any terminal:

claude mcp add siftrcode -- npx -y siftrcode mcp

Claude Code will automatically register SiftrCode's Stdio MCP server.

Or drop in workspace .mcp.json

To automatically enable SiftrCode for every developer on your repository, commit a .mcp.json in your project root:

{
  "mcpServers": {
    "siftrcode": {
      "command": "npx",
      "args": ["-y", "siftrcode", "mcp"]
    }
  }
}

Add Custom Slash Command /siftr

Drop .claude/commands/siftr.md into your repository to trigger AST interface synthesis on demand by typing /siftr [path] directly inside Claude Code.

npx siftrcode init

npx siftrcode init automatically creates .mcp.json, .claude/commands/siftr.md, and CLAUDE.md rules for you.

Why Claude 3.7 Sonnet Needs SiftrCode

200k context windows exist, but loading full codebases into them creates severe penalties.

Eliminate Latency Spikes

Feeding 100k+ tokens of raw method bodies to Claude 3.7 Sonnet drives query latency up to 45+ seconds. With SiftrCode, context drops to 8k tokens and turns finish in 3.8s.

Stop Context Dilution

LLMs lose needle-in-haystack precision when drowned in TLS logic and loop implementations. Skeletons guarantee 100% focus on interface boundaries.

90% Token Economics

Claude 3.7 Sonnet costs $3.00/MTok input. A 100k query costs $0.30; a SiftrCode pruned query costs $0.024. Teams save $360+/engineer/month.

Metric	Raw Full-File Reading	With SiftrCode AST Synthesis	Net Improvement
Typical Repo Context Load	125,000 tokens	9,800 tokens	-92.2% Token Reduction
Turn Latency (Claude 3.7)	38.4s – 46.2s	3.2s – 4.5s	10x Faster Turnaround
Cost per 50-turn day	$18.75 / day	$1.47 / day	Save $518/mo per dev
Interface Contract Loss	0%	0% (100% Types Preserved)	Zero Type Degradation

Available MCP Tools in Claude Code

Once connected, Claude automatically calls these tools via Model Context Protocol.

siftr_skeleton

Single File Tool

Synthesizes clean interface contracts from source code in TypeScript, Python, Go, and Rust. Strips implementation bodies while keeping all types, classes, interfaces, and docstrings intact.

siftr_pack

Directory / Repo Tool

Prepares an AST-compressed architecture pack across entire directories or modules for Claude Code to understand project structure without importing gigabytes of raw source.

siftr_audit

Audit & Telemetry

Scans code or repositories for dead weight and calculates exact token bloat, potential cost reductions, and efficiency opportunities.

Ready to test it on your codebase?

Run a 5-second audit or register SiftrCode directly with your agent.

Run audit:

$ npx siftrcode audit

Run 30-Second Setup →