Borrowing it
Nothing to install: this file belongs to cgallic/open-brane. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/cgallic/open-brane/main/AGENTS.mdgit clone --depth 1 https://github.com/cgallic/open-braneWrote 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.
[](https://agentmods.dev/instructions/cgallic/open-brane/agents-md)<a href="https://agentmods.dev/instructions/cgallic/open-brane/agents-md"><img src="https://agentmods.dev/badge/instructions/cgallic/open-brane/agents-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.
<a href="https://agentmods.dev/instructions/cgallic/open-brane/agents-md"><img src="https://agentmods.dev/badge/instructions/cgallic/open-brane/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00204 | $0.00204 |
| Opus 5.5 | $0.00082 | $0.00082 |
| Sonnet 5.5 | $0.00041 | $0.00041 |
| Haiku 4.5 | $0.00020 | $0.00020 |
Grade A, and why
open-brane 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 15d 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
Open Brane product priorities
Open Brane is actively used as its owner's everyday Brain. Improvements must make that daily use easier while preserving its general-purpose capabilities.
- Keep projects, research, notes, decisions, saved documents, and cross-session context central to the product.
- Treat CRM, outreach, and other vertical workflows as optional integrations. Do not replace the general workspace with a vertical-specific interface or positioning.
- Make saved work easy to discover and resume. Distinguish explicitly saved next actions from inferred progress or suggestions.
- Preserve existing configurations, data, MCP tools, checkpoints, and document revisions. Do not seed real deployments with synthetic personal records.
- Prefer additive changes and read-only views when improving discovery. Keep writes on the existing canonical paths and retain revision checks.
- Verify owner isolation, saved-work retrieval, and existing general-purpose workflows alongside any integration-specific behavior.
- Describe demonstrations accurately: scripted clients are not autonomous agents, reported interactions are not verified deliveries, and advisory checks do not authorize external actions.
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.
- 15d ago First seen · 12 lines · 204 tokens per session scan A 262319d304fe
open-brane AGENTS.md is an instructions file published in the GitHub repository cgallic/open-brane (10 stars, last pushed 16d ago), licensed MIT. It adds 204 tokens to every session, about $0.0008 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 2026-10-22.
open-brane AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| open-brane AGENTS.mdcgallic/open-brane | Instructions file | 10 | 16d ago | MIT | A | 204 | Codex, OpenCode |
| 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 |