proto-tools: Instructions file for Claude Code

CLAUDE.md

proto-tools CLAUDE.md is an instructions file for Claude Code from evo-design/proto-tools. It costs 1,646 tokens per session, scanned C, original, MIT.

A project guide for Proto Bio, a Python library that provides consistent wrappers around bioinformatics tools. Bioinformatics uses software to study biological data such as DNA, proteins, and molecules.

In plain words
What is it for?
It helps with adding or changing tool wrappers, schemas, documentation, examples, citations, licenses, execution, logging, and tests.
Why use it?
It points developers to the right documentation and explains how the project manages separate tool environments and integration tests.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: reads .claude/ paths.

This is evo-design/proto-tools's own configuration. It tells Claude Code how to work on proto-tools itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything proto-tools configures →

Reuse

Borrowing it

Nothing to install: this file belongs to evo-design/proto-tools. 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/evo-design/proto-tools/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/evo-design/proto-tools

Made for: Claude Code.

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Per session 1,646 This file is loaded in full into every session.
When invoked 1,646 The same file — it is already loaded in full.
Security scan C 1 finding. 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01646 $0.01646
Opus 5.5 $0.00658 $0.00658
Sonnet 5.5 $0.00329 $0.00329
Haiku 4.5 $0.00165 $0.00165

Measured 1mo ago against content hash 5801ec5b7ccb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

proto-tools CLAUDE.md scanned grade C with 1 finding 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 1mo 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.

Hidden instructionshighPrompt injection

Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.

`<!-- docs:ignore start -->` / `<!-- docs:ignore end -->`. See `notes/README.md`.
CLAUDE.md · 171 lines

How it starts

The opening of the file, as written. The whole thing — 171 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Project Overview

proto_tools is the Proto Bio library of typed bioinformatics tool wrappers. It provides uniform Python APIs, schemas, docs, examples, citations, licenses, and isolated execution environments for sequence, structure, ligand, genomic, and publication/database tools.

Read Before Editing

  • README.md: user-facing setup, usage examples, gated model access, and tool catalog.
  • Toolkit docs under proto_tools/tools/{category}/{toolkit}/: scientific context, metadata, examples, and standalone setup for the touched toolkit.
  • Relevant notes/ files before changing runtime behavior, standalone environments, logging, storage, seeding, error handling, testing, or platform support.
  • Source and tests: the final authority for signatures, schemas, exports, and behavior.

Development Setup

Use the active Python environment. For first-time development setup, install the package in editable mode with dev dependencies:

pip install -e ".[dev]"      # first-time setup only

Do not manually create or activate tool-specific environments; proto-tools builds and manages standalone tool environments automatically.

Integration tests are skipped by default. See notes/testing.md for markers, selection flags, logs, and test layout.

Do not write frivolous tests. A test that asserts Pydantic stored the default you just wrote (test_sample_config_defaults, test_*_config_defaults) proves nothing: it restates the source in a second place, so changing a default means editing both and the test never catches a mistake. Test computed properties, validators, normalization, error cases, and defaults that are derived from other fields. Pinning a value is only worth it when it must agree with something external, such as an upstream snapshot.

Before pushing any PR, run the full tests/style_consistency_tests/ suite (fast, CPU-only, no env). These run in CI and enforce consistency checks (docstring style, config/schema field metadata including the <100-char description limit, README/license/version consistency, tool I/O round-trip, and more) that ruff and mypy do not catch (ruff ignores E501). Failures propagate through configs embedded by other tools, e.g. an over-long Mmseqs2HomologySearchConfig field description fails every predictor that nests it.

Read the full file on GitHub · 171 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.

  1. 1mo ago Changed · +3 lines · +61 tokens per session 5801ec5b7ccb
  2. 2mo ago First seen · 168 lines · 1,585 tokens per session scan C 364ee2e3cb66

Subscribe to this mod's changes

proto-tools CLAUDE.md is an instructions file published in the GitHub repository evo-design/proto-tools (142 stars, last pushed 2d ago), licensed MIT. It adds 1,646 tokens to every session, about $0.0066 per session on Opus 5.5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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