check

A command that compares a file or proposed change with decisions stored in the project's memory file. It reports PASS, WARN, or FAIL and identifies violated decisions.

In plain words
What is it for?
Use it to review files or changes in areas such as storage or authentication against recorded project decisions.
Why use it?
It helps reveal when a change conflicts with documented architecture or prohibited approaches before the change is accepted.

Command

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/mnemehq/mneme/check
Clone the repo
git clone --depth 1 https://github.com/MnemeHQ/mneme
Per session 10 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 206 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 $0.00010 $0.00206
Opus 5 $0.00005 $0.00103
Sonnet 5 $0.00002 $0.00041
Haiku 4.5 $0.00001 $0.00021

Measured 2d ago against content hash ea551c8b705f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

check 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 2d ago.

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:

integrations/claude-code-plugin/commands/check.md · 27 lines

What it actually says

Run mneme check against the current project memory.

If the user names a file, check that file's contents against .mneme/project_memory.json. Otherwise, ask which file or scope.

Use the Bash tool:

mneme check \
  --memory .mneme/project_memory.json \
  --input <path> \
  --query "<scope or task description>" \
  --mode strict

Important: The --query argument controls which decisions are retrieved for checking — it is not just a label. Use a descriptive phrase that matches the scope of the change (e.g. "storage layer", "auth middleware") rather than just the file name. Decisions are matched by keyword overlap between the query and their scope, id, and text fields.

Report PASS / WARN / FAIL clearly. On FAIL, name the violated decision id and quote the anti-pattern or constraint that triggered it.

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. 2d ago First seen · 27 lines · 10 tokens per session scan A ea551c8b705f

Subscribe to this mod's changes

check is a command published in the GitHub repository MnemeHQ/mneme (19 stars, last pushed 3d ago), licensed MIT. It adds 10 tokens to every session and 206 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.