25+ Languages · Any LLM Provider · Beta

Ship faster. Spend less.
Give your AI agent the context it needs.

SourceIndex pre-analyzes your codebase so your AI coding agent knows exactly where to look — cutting costs by 50% and finishing tasks in half the time.

−50% Cost Reduction
−58% Faster Completion
100% Pass Rate Maintained
25+ Languages
Learn More Get Early Access

How It Works

Index once, search per task, let the agent focus on building.

See it in action

sourceindex demo
1

Index Your Codebase

SourceIndex scans your repo and builds a structured summary — understanding what every file and function does.

➔
2

Search & Select

Given a task, SourceIndex finds the relevant files and functions and builds a targeted roadmap.

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3

Agent Runs Faster

The roadmap is delivered to any AI coding agent. It skips exploration and starts implementing immediately.

The Numbers

Measured across 10 public GitHub repos and 30+ coding tasks.

Claude Code Claude Code + SourceIndex
Cost −50%
Claude Code
+ SourceIndex
Time −58%
Claude Code
+ SourceIndex

Cost Depends on Your Model

SourceIndex reduces cost by ~50% regardless of model. Per 100 coding tasks:

Claude Opus ~$103 → ~$52 Save ~$51
Claude Sonnet ~$31 → ~$16 Save ~$15
GPT-4o / Codex Varies by provider ~50% reduction

Benchmark: 30+ real-world coding tasks across 10 public GitHub repos, multiple runs each. Cost and time reductions are statistically significant (paired t-tests, p<.01).

Built for Real Codebases

25+ Languages

Python, TypeScript, Rust, Go, Java, C/C++, Ruby, PHP, Swift, Kotlin, and more.

Any LLM Provider

Works with Anthropic, OpenAI, Azure, AWS Bedrock, or any compatible API.

Multiple Delivery Modes

Pre-context injection, subagent, or MCP server. Pick what fits your agent framework.

Incremental Updates

Only changed files are re-indexed. The index stays fresh with every commit.

AST-Grounded

Line ranges validated against tree-sitter AST. Precise read windows for the agent.

Works With Any Agent

Claude Code, Cursor, Codex, Aider, or your own custom agent framework.

Get Early Access

SourceIndex is in beta. Tell us about yourself and we'll get you set up.

We'll review your request and email you within 24 hours.