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/synthetic-sciences/openscience/claude-mdgit clone --depth 1 https://github.com/synthetic-sciences/openscienceWhat 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 | $0.01432 | $0.01432 |
| Opus 5 | $0.00716 | $0.00716 |
| Sonnet 5 | $0.00286 | $0.00286 |
| Haiku 4.5 | $0.00143 | $0.00143 |
Grade A, and why
openscience 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 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.
How it starts
The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md: OpenScience
Project Overview
OpenScience (openscience) is an open-source, model-agnostic AI research agent for ML engineering and scientific work. Built with Bun and TypeScript, it ships as native binaries for Linux, macOS, and Windows.
- npm package:
@synsci/openscience - Binary name:
openscience - Config dir:
~/.config/openscience/(override withOPENSCIENCE_CONFIG_DIR) - Data root:
~/.openscience/by default (relocatable; legacysynscdata imports automatically) - Config file:
openscience.json - Provider ID:
synsci(Atlas wire contract, do not rename)
Repository Structure
Single git repo organized by runtime boundary.
frontend/ workspace (browser UI), docs/share site, and shared UI
backend/ CLI/server, skills, sessions, and provider integrations
tooling/ SDK, plugin runtime, repo automation, launcher, utilities, and patches
Development
# Run CLI in dev mode
bun run dev
# Build all platform binaries
cd backend/cli && bun run build
# Typecheck
bun run typecheck
# Run tests
cd backend/cli && bun test
Prompt Architecture (Dual-Layer)
The CLI uses a dual-layer prompt system: provider-level system prompts + agent-level workflow prompts.
User request with agent name (e.g., "research")
│
├─ Layer 1: SYSTEM role ← provider-neutral product contract
│ src/session/system.ts supplies one contract to every model
│
└─ Layer 2: USER role injection ← agent prompt (task-specific)
src/session/prompt.ts selects by agent name + tier
Session prompts (src/session/prompt/)
| File | Purpose |
|---|---|
core.txt |
Provider-neutral operating contract |
plan.txt |
Read-only Plan mode contract |
build-switch.txt, max-steps.txt |
Mode transition and step-limit utilities |
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 · 131 lines · 1,432 tokens per session scan A 7f389c736bc2
openscience CLAUDE.md is an instructions file published in the GitHub repository synthetic-sciences/openscience (3,385 stars, last pushed today), licensed Apache-2.0. It adds 1,432 tokens to every session, about $0.0072 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.
Other instructions, from other repositories
zeroclaw AGENTS.md
AGENTS.md instructions for zeroclaw-labs/zeroclaw, covering agents.md - zeroclaw, single source of truth, safety and privacy, working rules and user-facing text.
zeroclaw CLAUDE.md
Claude Code instructions for zeroclaw-labs/zeroclaw, covering claude.md — zeroclaw (claude code), claude code settings, hooks and slash commands.
gini-agent AGENTS.md
AGENTS.md instructions for Open-Curiosity/gini-agent, covering gini agent instructions, shape, adrs, boundaries and branches.
terminator CLAUDE.md
Instructions for mediar-ai/terminator, covering terminator - ai-native gui automation, installation, release, or with globally installed cli and development.
ralphy CLAUDE.md
Claude Code instructions for alecs5am/ralphy, a project described as: 🎬 Give AI agents tools to create viral videos. Influence at scale, from your terminal.
selftune AGENTS.md
Instructions for selftune-dev/selftune, covering agents.md, repository overview, vendored effect reference, agent-first architecture and project structure.