What is mentedb CLAUDE.md?

Project instructions for MenteDB, a Rust database engine designed to store and retrieve information for AI agents. They describe the project layout, development commands, tests, and key components.

For orienting work in MenteDB’s Rust workspace, including storage, vector search, graph data, query parsing, context assembly, memory features, and its REST server.

They give a coding agent the project-specific rules it needs to make compatible changes and use the expected build, test, and lint process.

How nambok/mentedb configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to nambok/mentedb. 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/nambok/mentedb/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/nambok/mentedb

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/nambok/mentedb/claude-md/github.svg)](https://agentmods.dev/instructions/nambok/mentedb/claude-md)

Your own site

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

Per session 1,027 This file is loaded in full into every session.

When invoked 1,027 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 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.

Model	Per session	Once invoked
Fable 5.1	$0.01027	$0.01027
Opus 5.5	$0.00411	$0.00411
Sonnet 5.5	$0.00205	$0.00205
Haiku 4.5	$0.00103	$0.00103

Measured 6d ago against content hash 294107ab5adc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mentedb 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 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

This is a copy

95% identical to mentedb copilot-instructions.md — 6 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.

CLAUDE.md · 85 lines

How it starts

The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MenteDB Development Instructions

Project overview

MenteDB is a purpose built Rust database engine for AI agent memory. It includes custom storage (WAL, record cache, compact record file), HNSW vector indexing, CSR/CSC graph, a custom query language (MQL), context assembly with U curve attention layout, and 7 unique cognitive features (stream cognition, write time inference, trajectory tracking, phantom memories, interference detection, pain signals, speculative pre assembly).

Workspace structure

crates/
  mentedb-core/       Core types, config, error, MVCC, multi agent
  mentedb-storage/    Record file, WAL, record cache, migration, backup/restore
  mentedb-index/      HNSW vector index, bitmap, temporal, salience
  mentedb-graph/      CSR/CSC graph, traversal, belief propagation
  mentedb-query/      MQL lexer, parser, planner
  mentedb-context/    U curve attention layout, delta tracker, serializers
  mentedb-cognitive/  Stream cognition, write inference, trajectory, phantoms, interference, pain, speculative
  mentedb-consolidation/ Decay, archival, extraction, compression, GDPR forget
  mentedb-embedding/  Provider trait, hash/HTTP providers, LRU cache
  mentedb-server/     Axum REST API, JWT auth, rate limiting, WebSocket
  mentedb/            Unified facade (MenteDb struct)
sdks/
  python/             PyO3 bindings + pure Python client
  typescript/         napi-rs bindings + TypeScript client
  python/integrations/langchain/  LangChain memory, retriever, chat history
  python/integrations/crewai/     CrewAI memory and tool adapter

The SDKs are excluded from the Cargo workspace and build independently.

Build, test, and lint

Always run these before committing:

cargo fmt --all
cargo clippy --workspace -- -D warnings
cargo test --workspace

The server binary is mentedb-server and runs on axum with JWT auth, rate limiting, and WebSocket support.

Key types

MemoryNode: The fundamental storage unit (id, content, memory_type, embedding, metadata, timestamps)
MemoryEdge: Typed relationship between memories (caused, contradicts, relates_to, obsoletes, etc.)
MenteDb: The unified facade that coordinates all subsystems
MenteConfig: Top level config with sub configs for every subsystem
MenteError / MenteResult<T>: Error handling throughout

Read the full file on GitHub · 85 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.

6d ago Changed · +17 tokens per session 294107ab5adc
18d ago Changed · +13 tokens per session fb5aa6d39204
2mo ago First seen · 85 lines · 997 tokens per session scan A d547ac173c6b

Subscribe to this mod's changes

mentedb CLAUDE.md is an instructions file published in the GitHub repository nambok/mentedb (124 stars, last pushed yesterday), licensed Apache-2.0. It adds 1,027 tokens to every session, about $0.0041 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 95% identical to mentedb copilot-instructions.md, differing in 6 lines, and is treated as a copy.

Databases agent-memory ai ai-agents cognitive-architecture context-window

mentedb CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
mentedb CLAUDE.mdnambok/mentedb	Instructions file	124	yesterday	Apache-2.0	A	1,027	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

mentedb: Instructions file for Claude Code