What is mempenny-memory-distill?

A memory-distillation command rewrites one memory file in place as one to three short, forward-looking statements; it is an adapter for the OpenCode coding-agent host.

Use it to condense a single team-memory file while following the project’s configured memory format and language settings.

It replaces a long narrative with the small amount of shared context that will be useful later.

How marcelopaniza/mempenny configures Claude Code and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to marcelopaniza/mempenny. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/marcelopaniza/mempenny/main/.opencode/commands/mempenny-memory-distill.md

Clone the repo

git clone --depth 1 https://github.com/marcelopaniza/mempenny

Made for: Claude Code, OpenCode.

Or install mempenny, the plugin that ships this one along with the rest of its 2 skills, 18 commands, 1 agent, 1 hook.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/marcelopaniza/mempenny/mempenny-memory-distill/github.svg)](https://agentmods.dev/commands/marcelopaniza/mempenny/mempenny-memory-distill)

Your own site

<a href="https://agentmods.dev/commands/marcelopaniza/mempenny/mempenny-memory-distill"><img src="https://agentmods.dev/badge/commands/marcelopaniza/mempenny/mempenny-memory-distill/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/commands/marcelopaniza/mempenny/mempenny-memory-distill"><img src="https://agentmods.dev/badge/commands/marcelopaniza/mempenny/mempenny-memory-distill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 29 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 410 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00029	$0.00410
Opus 5	$0.00015	$0.00205
Sonnet 5	$0.00006	$0.00082
Haiku 4.5	$0.00003	$0.00041

Measured 12d ago against content hash 12b613c44581, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

mempenny-memory-distill 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 12d 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.

.opencode/commands/mempenny-memory-distill.md · 36 lines

What it actually says

MemPenny memory-distill — opencode host adapter

The user invoked this command with: $ARGUMENTS

Execute the MemPenny memory-distill flow. The canonical procedure lives in:

${MEMPENNY_ROOT}/commands/memory-distill.md

Read it first with the Read tool — it is the single source of truth for the in-place distillation discipline, the locale distill.* keys, and the distill_output_instruction. This file only describes the opencode host differences.

Apply these opencode host adaptations (override the source wherever they conflict):

A. Paths & environment

The env shim sets MEMPENNY_HOST=opencode, MEMPENNY_ROOT, MEMPENNY_DATA_DIR. Substitute:

${CLAUDE_PLUGIN_ROOT} → ${MEMPENNY_ROOT}
${CLAUDE_PLUGIN_DATA} → ${MEMPENNY_DATA_DIR}
${CLAUDE_PROJECT_DIR} → the current working directory

B. Config path (shared with Claude Code)

${MEMPENNY_CONFIG_PATH} if set.
Else ~/.claude/mempenny.config.json if ~/.claude/ exists.
Else ~/.config/opencode/mempenny.config.json.

C. Command namespace

Sibling commands use the hyphen namespace.

distill-specific notes

The first positional arg is the absolute path to a single memory file (required); --lang parses from $ARGUMENTS.
Distill replaces prose with 1-3 sentences of forward-looking truth — keep the source's distill_output_instruction voice exactly (it already constrains length and tone for cross-model reliability). Do not add a second style guide.

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.

12d ago First seen · 36 lines · 29 tokens per session scan A 12b613c44581

Subscribe to this mod's changes

mempenny-memory-distill is a command published in the GitHub repository marcelopaniza/mempenny (2 stars, last pushed 22d ago), licensed MIT. It adds 29 tokens to every session and 410 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 2026-08-31.

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mempenny: Command for Claude Code