Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/chrisribe/simple-memory-mcp/copilot-instructionsgit clone --depth 1 https://github.com/chrisribe/simple-memory-mcpWhat 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 | $0.00450 | $0.00450 |
| Opus 5 | $0.00225 | $0.00225 |
| Sonnet 5 | $0.00090 | $0.00090 |
| Haiku 4.5 | $0.00045 | $0.00045 |
Grade A, and why
simple-memory-mcp copilot-instructions.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 2d 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.
What it actually says
Simple Memory MCP Server
TypeScript MCP server for persistent memory storage with SQLite FTS5. Works as both MCP server and CLI tool.
Quick Reference
Build & Test (All operations < 10 seconds)
npm install # Install dependencies
npm run build # Build TypeScript → JavaScript
npm test # Run all tests
CLI Commands
# Store
node dist/index.js store --content "text" --tags "tag1,tag2"
# Search
node dist/index.js search --query "text" # By content
node dist/index.js search --tags "tag1" # By tags
# Update
node dist/index.js update --hash "abc..." --content "new text" --tags "new,tags"
# Delete
node dist/index.js delete --tag "tagname" # By tag
node dist/index.js delete --hash "abc..." # By hash
# Stats
node dist/index.js stats
Database
- Default:
./memory.db - Custom: Set
MEMORY_DB=/path/to/dbenvironment variable - Format: SQLite with FTS5 full-text search, WAL mode
Project Structure
src/
├── services/memory-service.ts # Core SQLite + FTS5 operations
├── tools/ # MCP tools: store, search, update, delete, stats
├── tests/ # Comprehensive test suite
└── utils/ # JSON/CLI parsing, debug
Architecture
- ES Modules: Use
.jsextensions in imports - TypeScript: Target ES2022, outputs to
dist/ - Database: better-sqlite3 with FTS5, prepared statements
- MCP: @modelcontextprotocol/sdk
- Performance: Sub-millisecond operations, 2,000-10,000 ops/sec
Troubleshooting
- Module errors: Run
npm install - Build errors: Run
npm run build - Database errors: Check
MEMORY_DBpath is writable
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.
- 2d ago First seen · 58 lines · 450 tokens per session scan A 9fe51af73ca2
simple-memory-mcp copilot-instructions.md is an instructions file published in the GitHub repository chrisribe/simple-memory-mcp (8 stars, last pushed 4mo ago), licensed MIT. It adds 450 tokens to every session, about $0.0022 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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