mnemon

A command-line memory system for QoderWork, a coding assistant. It stores facts, finds them later, connects related memories, and manages old or unwanted entries.

In plain words
What is it for?
Use it to remember facts, recall or search past knowledge, link related memories, import memory files, remove entries, and clean up low-value memories.
Why use it?
It keeps useful information between conversations, so the assistant does not have to rediscover the same facts or rely only on the current chat.

Skill for Claude CodeCodex

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 skills/mnemon-dev/mnemon/qoderwork
Any agent
npx skills add mnemon-dev/mnemon --skill qoderwork
Clone the repo
git clone --depth 1 https://github.com/mnemon-dev/mnemon

Made for: Claude Code, Codex.

Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 485 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 95% copy Near-identical to another mod 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 $0.00025 $0.00485
Opus 5 $0.00013 $0.00243
Sonnet 5 $0.00005 $0.00097
Haiku 4.5 $0.00003 $0.00049

Measured 2d ago against content hash 624dbf74223b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mnemon 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

This is a copy

95% identical to mnemon — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

internal/memory/setup/assets/qoderwork/SKILL.md · 47 lines

What it actually says

mnemon

Workflow

  1. Remember: mnemon remember "<fact>" --cat <cat> --imp <1-5> --entities "e1,e2" --source agent
    • Diff is built in: duplicates are skipped, conflicts are auto-replaced.
    • Output includes action (added/updated/skipped), semantic_candidates, and causal_candidates.
  2. Link (evaluate candidates from step 1 using judgment):
    • Review causal_candidates: link only when the memories are genuinely causally related.
    • Review semantic_candidates: high similarity alone is not enough; skip unrelated keyword matches.
    • Syntax: mnemon link <id> <candidate> --type <causal|semantic> --weight <0-1> [--meta '<json>']
  3. Recall: mnemon recall "<query>" --limit 10

Commands

mnemon remember "<fact>" --cat <cat> --imp <1-5> --entities "e1,e2" --source agent
mnemon link <id1> <id2> --type <type> --weight <0-1> [--meta '<json>']
mnemon recall "<query>" --limit 10
mnemon search "<query>" --limit 10
mnemon import --dry-run <file>
mnemon import <file>
mnemon forget <id>
mnemon related <id> --edge causal
mnemon gc --threshold 0.4
mnemon gc --keep <id>
mnemon status
mnemon log
mnemon store list
mnemon store create <name>
mnemon store set <name>
mnemon store remove <name>

Guardrails

  • Use memory only when it can materially improve continuity or task quality.
  • Do not store secrets, passwords, tokens, private keys, or short-lived operational noise.
  • Categories: preference, decision, insight, fact, context
  • Edge types: temporal, semantic, causal, entity
  • Max 8,000 chars per insight.
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 · 47 lines · 25 tokens per session scan A 624dbf74223b

Subscribe to this mod's changes

mnemon is a skill published in the GitHub repository mnemon-dev/mnemon (540 stars, last pushed 9d ago), licensed Apache-2.0. It adds 25 tokens to every session and 485 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to mnemon, differing in 2 lines, and is treated as a copy.

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