60–70% of your agent's tokens go to finding the code. Hand it the map instead.

SourceIndex hands your agent a per-task roadmap of the code — greatly reducing the context it burns and improving the model's agentic capability. That's several dollars back on a single coding task, and 40% less time waiting.

3.9× Cheaper · Claude Code

5.2× Cheaper · OpenCode

~100× Less Cost×Time · SWE Benchmark

25+ Languages

Watch the Demo Get Early Access

How It Works

SourceIndex is the bridge between your codebase and your coding agent — it watches one side and answers the other.

Your Codebase

your-repo/
├─ src/api/routes.py
├─ src/auth/login.py
└─ src/core/models.py

Run sourceindex init once. Git hooks re-index on every commit, so the map never goes stale.

The Bridge

◆

SourceIndex

Stays in sync with your repo and answers every agent request with a targeted roadmap.

Your Coding Agent

> implement rate limiting
✓ sourceindex subagent
→ editing routes.py:41–77

Works with Claude Code and OpenCode. SourceIndex registers as a subagent — replacing Claude Code's built-in Explore — so your agent gets the roadmap and starts building immediately.

See It in Action

Index once, then watch your agent go straight to the right files instead of hunting for them.

See the Full Demo

Built for Real Codebases

Fast to set up, precise to the line, invisible in your day-to-day workflow.

25+ Languages

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

Nothing to Configure

One SourceIndex key is all you need. Our hosted backend handles the LLM calls — no provider accounts, no model picking, no extra bills.

Zero Workflow Change

After sourceindex init, day-to-day you do nothing. Your agent discovers and uses the index on its own.

Incremental Updates

Only changed files are re-indexed. Git hooks keep the index fresh with every commit.

AST-Grounded

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

Claude Code & OpenCode

First-class integration with both, auto-detected per repo. More agents on the way.

See the Full Benchmark