What is engram-cogitator CLAUDE.md?

Project instructions for Engram Cogitator, a Go server that gives Claude Code sessions searchable long-term memory using a database and locally generated text embeddings.

Use them when building or testing the Engram Cogitator project locally, including its Go code and Docker image.

They give contributors the project rules, required tools, build commands, and boundaries such as not starting servers or committing without permission.

How MereWhiplash/engram-cogitator configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to MereWhiplash/engram-cogitator. 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/MereWhiplash/engram-cogitator/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/MereWhiplash/engram-cogitator

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/merewhiplash/engram-cogitator/claude-md/github.svg)](https://agentmods.dev/instructions/merewhiplash/engram-cogitator/claude-md)

Your own site

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

Per session 144 This file is loaded in full into every session.

When invoked 144 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	$0.00144	$0.00144
Opus 5.5	$0.00058	$0.00058
Sonnet 5.5	$0.00029	$0.00029
Haiku 4.5	$0.00014	$0.00014

Measured 2mo ago against content hash 174e2a878487, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

engram-cogitator 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 · 31 lines

What it actually says

Engram Cogitator

Go MCP server providing persistent semantic memory for Claude Code sessions.

Rules

User runs dev/build - never run servers
No summary docs without asking
Use tree command to see structure
Don't commit without being told

Stack

Go 1.22+
Official modelcontextprotocol/go-sdk
sqlite-vec for vector search
Ollama for embeddings

Commands

# Build locally (requires CGO)
CGO_ENABLED=1 go build ./cmd/server

# Docker build
docker build -t engram-cogitator:local .

# Run tests (when added)
go test ./...

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 · 31 lines · 144 tokens per session scan A 174e2a878487

Subscribe to this mod's changes

engram-cogitator CLAUDE.md is an instructions file published in the GitHub repository MereWhiplash/engram-cogitator (4 stars, last pushed 4mo ago), licensed MIT. It adds 144 tokens to every session, about $0.0006 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 2026-08-31.

Databases Memory and context

engram-cogitator CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
engram-cogitator CLAUDE.mdMereWhiplash/engram-cogitator	Instructions file	4	4mo ago	MIT	A	144	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

engram-cogitator: Instructions file for Claude Code