distill-kura: Instructions file for Codex

AGENTS.md

distill-kura AGENTS.md is an instructions file for Codex, OpenCode from lna-lab/distill-kura. It costs 3,021 tokens per session, scanned A, original, MIT.

A project guide for distill-kura, a Python system that stores and recalls long-term memories for coding agents. It explains its security boundaries and rules for resolving memory stores.

In plain words
What is it for?
Changing memory lookup and storage code, reviewing path-safety rules, and maintaining a dependency-free Python project.
Why use it?
It helps prevent agents from reading the wrong memory store or weakening protections around sensitive data.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions Claude Code; mentions AGENTS.md.

This is lna-lab/distill-kura's own configuration. It tells Codex and OpenCode how to work on distill-kura itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything distill-kura configures →

Reuse

Borrowing it

Nothing to install: this file belongs to lna-lab/distill-kura. 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/lna-lab/distill-kura/master/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/lna-lab/distill-kura

Made for: Codex, OpenCode.

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 distill-kura AGENTS.md

README.md
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Your own site
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/lna-lab/distill-kura/agents-md"><img src="https://agentmods.dev/badge/instructions/lna-lab/distill-kura/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3,021 This file is loaded in full into every session.
When invoked 3,021 The same file — it is already loaded in full.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.03021 $0.03021
Opus 5 $0.01510 $0.01510
Sonnet 5 $0.00604 $0.00604
Haiku 4.5 $0.00302 $0.00302

Measured 6d ago against content hash bf20f636c32d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

distill-kura AGENTS.md 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 6d 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:

AGENTS.md · 232 lines

How it starts

The opening of the file, as written. The whole thing — 232 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — working on distill-kura

Instructions for an agent (or a person) changing this codebase. Hosts that read AGENTS.md — DeepSeek Harness via dsh-agent-instructions, Claude Code, others — pick this up automatically.

What this project is

A long-term memory for agents: recall by meaning, writing gated by evidence, several independent stores so an agent mode change is a memory change. Standard library only, Python ≥ 3.11. No dependencies is a feature — it lets the whole thing be dropped next to any host, and it keeps the trust surface small for something that decides what an agent believes.

Boundaries

docs/TRUST.md states what a store boundary is and is not, and the honesty of that statement is load-bearing. Two rules follow from it and must not be weakened:

Every lookup resolves INTO slug_set(). Never build a path from a caller-supplied name and check whether it exists — that was the hole: GET /memory/..%2Fprivate%2Fsecret returned another store's memory. Containment is membership in a set, not a blocklist of characters. contained() (realpath + commonpath) sits behind it as defence in depth.

Explicit reads are exact; only a MODEL's pick is fuzzy. read_exact() for a slug from a person, a kura_read call, or an HTTP route. Fuzzy resolve() stays for thinker picks and [[links]], where every candidate comes from the slug set — a deliberate deviation from "links exact only", because in-store fuzzy resolution demonstrably connects real links ([[brain-memory]]_study/brain-memory) and cannot leave the store.

Every path that writes into a store asks the policy. Not just remember_direct and pour_verified — an adversarial pass found tidy(), Loom.persist() and init_files() writing into a frozen store, and kura weave --no-model destroying a memory's body via cloth_path. When you add a code path that touches a store directory, the question to answer in review is not "is this a memory?" but "would this run on a frozen store?".

Read the full file on GitHub · 232 lines

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. 6d ago Changed · +7 lines · +146 tokens per session bf20f636c32d
  2. 10d ago First seen · 225 lines · 2,875 tokens per session scan A 42d4b23bd5d9

Subscribe to this mod's changes

distill-kura AGENTS.md is an instructions file published in the GitHub repository lna-lab/distill-kura (48 stars, last pushed 4d ago), licensed MIT. It adds 3,021 tokens to every session, about $0.0151 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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