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/scottrbk/forgetful/agents-mdgit clone --depth 1 https://github.com/ScottRBK/forgetfulWhat 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 | $0.00400 | $0.00400 |
| Opus 5 | $0.00200 | $0.00200 |
| Sonnet 5 | $0.00080 | $0.00080 |
| Haiku 4.5 | $0.00040 | $0.00040 |
Grade A, and why
forgetful 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 3d 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
Forgetful Development Guide
Architecture
Layered architecture: routes -> services -> protocols -> repositories/adapters No pollution of service layer with integration/implementation details
Testing Philosophy
We focus on integration and E2E tests over unit tests. Tests should cover critical workflows without exhaustive edge case coverage.
Integration Tests
Location: tests/integration/
Purpose: Test business logic with stubbed I/O (no real database required)
Run locally:
uv run pytest tests/integration/
These tests use in-memory stubs and run fast (~seconds). They form the bulk of our test suite and catch 90% of issues.
End-to-End Tests
SQLite E2E Tests
Location: tests/e2e_sqlite/
Purpose: Test complete stack with in-memory SQLite
Requirements: None (no Docker required)
Run locally:
uv run pytest tests/e2e_sqlite/
These tests use an in-memory SQLite database for test isolation. Fast execution with automatic cleanup.
PostgreSQL E2E Tests
Location: tests/e2e/
Purpose: Test complete stack with real PostgreSQL
Requirements: PostgreSQL running in Docker
Run locally:
cd docker && docker compose down -v
uv run pytest -m e2e
Remember: rebuild docker image if running local container service, not required however for e2e tests.
Linting
Ensure that you run ruff following any changes and address any issues raised
uv tool run ruff check .
Note: Ruff UP006 rule enforces Python 3.12+ built-in generics (list instead of typing.List, dict instead of typing.Dict, etc.). This catches legacy type hint syntax automatically.
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.
- 3d ago First seen · 51 lines · 400 tokens per session scan A 413881b8deb8
forgetful AGENTS.md is an instructions file published in the GitHub repository ScottRBK/forgetful (296 stars, last pushed 8d ago), licensed MIT. It adds 400 tokens to every session, about $0.0020 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 2026-08-30.
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