What is codemem CLAUDE.md?

Repository instructions for Claude Code covering Rust and Bun-based UI development, testing, formatting, linting, Git, and code review.

Building and testing Rust crates, developing the UI with Bun, running browser tests, checking code quality, confirming Git branches, and reviewing code.

They keep coding work consistent with the project's required commands and workflow, reducing missed checks before changes are committed or pushed.

How cogniplex/codemem configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to cogniplex/codemem. 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/cogniplex/codemem/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/cogniplex/codemem

Made for: Claude Code.

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/instructions/cogniplex/codemem/claude-md/github.svg)](https://agentmods.dev/instructions/cogniplex/codemem/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/cogniplex/codemem/claude-md"><img src="https://agentmods.dev/badge/instructions/cogniplex/codemem/claude-md/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/instructions/cogniplex/codemem/claude-md"><img src="https://agentmods.dev/badge/instructions/cogniplex/codemem/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,355 This file is loaded in full into every session.

When invoked 1,355 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.

Model	Per session	Once invoked
Fable 5.1	$0.01355	$0.01355
Opus 5.5	$0.00542	$0.00542
Sonnet 5.5	$0.00271	$0.00271
Haiku 4.5	$0.00136	$0.00136

Measured 2mo ago against content hash 8b4dd0143bd9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

codemem CLAUDE.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 2mo 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.

CLAUDE.md · 100 lines

How it starts

The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code when working with this repository.

Build & Test

cargo build                    # Build all crates
cargo test --workspace         # Run all tests
cargo bench                    # Run benchmarks
cargo fmt --all -- --check     # Check formatting
cargo clippy --workspace --all-targets -- -D warnings  # Lint check

UI (uses Bun, not npm):

cd ui && bun install && bun run dev       # Dev server
cd ui && bun run build                    # Production build → ui/dist/
cd ui && bun run tsc --noEmit             # Type check
cd ui && bun run eslint .                 # Lint
cd ui && npx playwright test              # E2E tests

CI uses RUSTFLAGS: -D warnings — all warnings are errors. Always run clippy before pushing.

Git Workflow

When working with git, always confirm the current branch before committing or pushing. Never assume you're on the correct branch.

Code Review

When asked to do code review, do a single thorough pass. Do not flip-flop on whether a bug exists or is fixed — if uncertain, re-read the code before answering.

General Principles

Do not over-engineer solutions. Apply only the changes requested. Do not add extra fields, workflows, or abstractions unless explicitly asked.

This is primarily a Rust project. Always run cargo test after making changes. Run cargo check before claiming code compiles cleanly.

When spawning sub-agents or waiting on background tasks, do NOT poll TaskList repeatedly. Check once, do other productive work, then check again after a reasonable interval.

Workspace Layout

6 crates: codemem-core (types/traits/errors/config) → codemem-storage (SQLite + HNSW + petgraph) + codemem-embeddings (Candle/Ollama/OpenAI) → codemem-engine (domain logic) → codemem (binary: CLI + MCP + REST API). Plus codemem-bench for benchmarks.

Development Quirks & Conventions

Storage method shadowing

Storage has concrete methods like list_sessions(namespace) (1-arg shorthand) AND StorageBackend trait methods like list_sessions(namespace, limit) (2-arg). Rust resolves concrete methods first. Be careful when code takes &dyn StorageBackend vs concrete Storage — the available method signatures differ.

Read the full file on GitHub · 100 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.

2mo ago First seen · 100 lines · 1,355 tokens per session scan A 8b4dd0143bd9

Subscribe to this mod's changes

codemem CLAUDE.md is an instructions file published in the GitHub repository cogniplex/codemem (18 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 1,355 tokens to every session, about $0.0054 per session on Opus 5.5. 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.

ai-coding cli embeddings knowledge-graph mcp mcp-server

codemem CLAUDE.md next to 6 instructions from other repositories
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codemem CLAUDE.mdcogniplex/codemem	Instructions file	18	3mo ago	Apache-2.0	A	1,355	Claude Code
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vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
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codemem: Instructions file for Claude Code