deja

deja is a command for coding agents from vshulcz/deja-vu. It costs 17 tokens per session (174 once invoked), scanned A, original, MIT.

A command for searching this machine's previous AI coding sessions and reporting what happened there.

In plain words
What is it for?
Finding past discussions about an error, function, file, project, or command across different AI coding tools.
Why use it?
It helps recover decisions, fixes, errors, and project context without relying on memory or repeating earlier investigation.

Command

Part of the deja-vu plugin — 1 skill, 1 command shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/vshulcz/deja-vu/deja
Clone the repo
git clone --depth 1 https://github.com/vshulcz/deja-vu

Or install deja-vu, the plugin that ships this one along with the rest of its 1 skill, 1 command.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for deja

README.md
[![agentmods](https://agentmods.dev/badge/commands/vshulcz/deja-vu/deja.svg)](https://agentmods.dev/commands/vshulcz/deja-vu/deja)
Your own site
<a href="https://agentmods.dev/commands/vshulcz/deja-vu/deja"><img src="https://agentmods.dev/badge/commands/vshulcz/deja-vu/deja.svg" alt="Measured on agentmods" height="20"></a>
Per session 17 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 174 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00017 $0.00174
Opus 5 $0.00009 $0.00087
Sonnet 5 $0.00003 $0.00035
Haiku 4.5 $0.00002 $0.00017

Measured yesterday against content hash 35d647ce2585, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

deja scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

  • recall — 97% identical, 2 lines differ
claude-plugin/commands/deja.md · 23 lines

What it actually says

Search the user's own past sessions across every AI coding tool on this machine, then answer from what you find.

Run the recall tool with the user's words as the query — the most specific tokens win (an exact error string, a function name, a file path, a flag). If a result looks right but is too short to act on, follow up with recall_context using a term from it.

If the deja MCP tools are unavailable, fall back to the CLI:

deja search -- "$ARGUMENTS"

Answer with what actually happened in those sessions — when it was, which project and tool, what was decided or fixed. Say plainly if nothing matched rather than filling the gap from general knowledge.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday Changed 35d647ce2585
  2. 5d ago First seen · 23 lines · 17 tokens per session scan A 8ba5452f405d

Subscribe to this mod's changes

deja is a command published in the GitHub repository vshulcz/deja-vu (776 stars, last pushed today), licensed MIT. It adds 17 tokens to every session and 174 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.