before the code changes.
Atlas maps your repository into persistent, evidence-backed memory — so you and your coding agent (Claude Code, Cursor, Codex) see likely blast radius before a change, locally, across every session.
Windows · Free to use · No signup required · Local-first · Your code stays on your machine
01 · Scan
Atlas maps your repository. #
Files, symbols, imports and callers — resolved into a dependency graph and an evidence store. Entirely on your machine.
- resolving files
- resolving symbols
- resolving imports
- building relationships
02 · Memory
Memory that survives across sessions. #
The map is written to disk and validated against the live repo before reuse. A fresh agent session restores it in milliseconds — no re-exploration.
03 · Retrieval
Your agent asks; Atlas answers with citations. #
Claude Code, Cursor and Codex request context over MCP. Atlas returns the exact files — cited, ranked, with the reason each was selected. No model in the loop; deterministic lookups.
04 · Persistent memory
Give your coding agent a persistent #
understanding of your project.
Windows · v1.0.5 · MCP · 18 tools · no signup
Capabilities
Read your codebase as a graph. #
Three views of the same indexed repository, each grounded in cited files. No model in the retrieval loop — deterministic lookups against the local index.
- 01
Graph
Where behavior lives, why a module matters, which files are involved — read straight off the dependency graph built from your local index.
- 02
Impact
The files a change is likely to affect and the dependency paths between them, before you touch a subsystem.
- 03
Debug
Start from an error or symptom; Atlas parses the traceback to repo files and symbol spans and returns an investigation path.
Integrations
Built for the agents you already use. #
{
"mcpServers": {
"atlas": { "command": "Atlas.exe", "args": ["--mcp"] }
}
}
The same local index serves every agent — your source never leaves the machine. Exact per-client setup is in the docs.
Proof
Measured, not marketed. #
Self-measured on one Windows machine against a reference repository, not a random OSS sample. Every number has a reproducible harness in the repo.
Local-first
Your repo is indexed on your machine. #
Atlas scans local files, builds a repository map, and returns cited answers from that local index. It does not upload your repository to a hosted analysis service.
Do I need an account to download Atlas? #
No. Download the Windows installer and start locally — there's a guest mode with no signup.
Does Atlas replace my AI coding agent? #
No. Atlas gives Claude Code, Cursor, and Codex a persistent, cited memory of your repository that they can use.
Does Atlas upload my source code? #
No. Repository indexing runs on your machine. You decide what context to send to an agent.
How is this different from repeated file search? #
Atlas builds a dependency graph + evidence store once and restores it in milliseconds across sessions, returning ranked, cited files — not a fresh grep each time.