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.
npx agentmods add skills/outlinedriven/odin-codex-plugin/memory-updatenpx skills add OutlineDriven/odin-codex-plugin --skill memory-updategit clone --depth 1 https://github.com/OutlineDriven/odin-codex-pluginWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00062 | $0.00867 |
| Opus 5 | $0.00031 | $0.00434 |
| Sonnet 5 | $0.00012 | $0.00173 |
| Haiku 4.5 | $0.00006 | $0.00087 |
Grade A, and why
memory-update scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
1 near-identical copy found in the catalogue:
- memory-update — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Scan session history, surface save-worthy moments, propose → confirm → write. Never fabricate — every proposal must cite a transcript turn.
Scope
Creates or revises memory files in the agent's memory directory. Does not delete, merge-stale, or audit existing files (that is memory-clean). Does not redact or sanitize (that is memory-sanitize).
Path resolution
SKILL_SCRIPTS="${MEMORY_UPDATE_SKILL_SCRIPTS:-$HOME/.claude/claude/skills/memory-update/scripts}"
MEMORY_DIR=$("$SKILL_SCRIPTS/resolve-paths.sh" memory_dir)
SESSION_HISTORY_GLOB=$("$SKILL_SCRIPTS/resolve-paths.sh" session_history_glob)
Abort on non-zero exit. Override MEMORY_UPDATE_SKILL_SCRIPTS if installed outside $HOME/.claude. Override MEMORY_DIR / SESSION_HISTORY_GLOB env vars to target a non-Claude-Code agent's layout.
Memory types and required sections
Read references/MEMORY-FRONTMATTER.md for the full schema. Key rules:
| type | Required extra sections |
|---|---|
feedback |
**Why:** and **How to apply:** |
project |
**Why:** and **How to apply:** |
user |
none beyond frontmatter |
reference |
none beyond frontmatter |
Filename: <type>_<slug>.md. Slug: lowercase, hyphens only, ≤ 40 chars.
Workflow
1. Resolve paths (above)
2. Scan session history for proposals
Run scripts/scan-session.sh "$SESSION_HISTORY_GLOB" → JSON array:
[{ "type": "feedback", "slug": "prefer-foo", "evidence_turn_ids": ["uuid-123"],
"draft_body": "...", "draft_index_entry": "- [Title](file.md) — hook" }, ...]
Read references/SIGNAL-HEURISTICS.md to understand which turns qualify. If the user triggered the skill with an explicit instruction ("remember that X"), synthesize a proposal from that instruction directly instead of scanning.
3. Present proposals and wait for confirmation
Render each proposal as:
Proposal N — type: feedback
Evidence: turn uuid-123 ("the user said 'stop doing X'")
Draft:
---
name: …
description: …
type: feedback
---
Rule text. **Why:** … **How to apply:** …
Index entry: - [Title](file.md) — hook (N chars)
Accept / Reject / Edit?
What ships with it
5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2d ago First seen · 94 lines · 62 tokens per session scan A 4762abdb4acd
memory-update is a skill published in the GitHub repository OutlineDriven/odin-codex-plugin (15 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 62 tokens to every session and 867 once invoked, about $0.0003 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.
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