The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
Deja Vu
Coding agent memory for Claude Code, Codex, Cursor and 39 more, built from the session history already on your disk. Local search, MCP and hooks, no LLM, one Go binary.
Install
$
npx skills add https://github.com/vshulcz/deja-vu --skill deja-searchClaude Code
claude mcp add deja-vu -- npx skills add https://github.com/vshulcz/deja-vu --skill deja-searchCursor / Claude Desktop (mcp.json)
{
"mcpServers": {
"deja-vu": {
"command": "npx",
"args": [
"skills",
"add",
"https://github.com/vshulcz/deja-vu",
"--skill",
"deja-search"
]
}
}
}Install command taken from the project's README or registry entry. Always review code before running it.
README excerpt
Read full README on GitHub →Your coding agents stop re-debugging what you already fixed.
Claude Code, Codex, Cursor and 39 more agents already save every session to disk. deja indexes all of it, months back, and hands the part that matters to whichever agent is working now.
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Nobody searched anything — the agent called deja itself. Two real runs against a synthetic corpus: nobody's history is published.
curl -fsSL https://raw.githubusercontent.com/vshulcz/deja-vu/main/install.sh | sh
deja install --auto
macOS and Linux; ten seconds to install, about ten to index · Windows, Homebrew, npm and the rest
I maintain deja-vu, so every driver, the corpus and the scoring rule are in this repository · the head-to-head, and how to re-run a row you doubt · every run
Docs · Benchmarks · How it compares · Building it into your tool
Found it useful? Star deja-vu on GitHub.
Search it yourself
deja with no arguments in a terminal opens a search over every agent's history. It starts
on the sessions behind your uncommitted change, then the recent ones in this project, and
the list narrows as you type.
↑↓picks a session,↵opens it at the match,nandNstep through the matches,escgoes back. Inside a session,/finds a word and][jump between the turns you asked.- The box takes filters: an agent with a colon (
codex:),today,yesterday,week,month, andin:. rresumes the session in the agent that wrote it.ocontinues it in any other agent, which starts with what the session asked, decided and left open.tabswitches between this project, all projects and Deleted, the sessions their agent deleted that deja still holds;Rputs one back.?lists every key,^khas the rest (copy the session id or project path, forget a session),qquits from the list;escsteps back and quits from an empty search box.
With DEJA_TUI=0 it prints the text summary instead, which is also deja brief. Piped, it
prints what is indexed and which command to run next.
Highlights
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