Borrowing it
Nothing to install: this file belongs to velinussage/brand-gen. 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/velinussage/brand-gen/main/AGENTS.mdgit clone --depth 1 https://github.com/velinussage/brand-genWrote 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/velinussage/brand-gen/agents-md)<a href="https://agentmods.dev/instructions/velinussage/brand-gen/agents-md"><img src="https://agentmods.dev/badge/instructions/velinussage/brand-gen/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/velinussage/brand-gen/agents-md"><img src="https://agentmods.dev/badge/instructions/velinussage/brand-gen/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 | $0.02054 | $0.02054 |
| Opus 5 | $0.01027 | $0.01027 |
| Sonnet 5 | $0.00411 | $0.00411 |
| Haiku 4.5 | $0.00205 | $0.00205 |
Grade A, and why
brand-gen 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 8d 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 — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.
brand-gen agent contract
This file tells AI agents (Claude Code, pi, openclaw, Cursor, Continue, etc.) how to mutate brand state in this repository. Read this before editing any file under brand_gen/, data/, or .brand-gen/brands/<brand>/.
The hybrid pattern
Brand state lives in two shapes, mutated through two channels:
| Shape | Where | Mutated by | Audit |
|---|---|---|---|
| Prose direction — paragraph-shaped voice, framings, art direction, adoption scenes | .brand-gen/brands/<brand>/voice/*.md, .brand-gen/brands/<brand>/custom-scratchpad.md, .brand-gen/brands/<brand>/iteration-memory.md, .brand-gen/brands/<brand>/brand-identity.md |
Agent Edit / Write directly; human-curated; review-on-merge gate |
git history |
| Structured constraints — atomic items in lists, schema-locked configs | data/aesthetic_capsules.json, data/sage_brand_contract.json, .brand-gen/brands/<brand>/custom-scratchpad.json, .brand-gen/brands/<brand>/aesthetic-preferences.json, .brand-gen/brands/<brand>/iteration-memory.json |
Typed bgen mutation verbs ONLY |
<brand>/mutations.jsonl ledger |
Generation events stay in .brand-gen/brands/<brand>/runs/<workflow_id>.jsonl (per-workflow). State mutations go to .brand-gen/brands/<brand>/mutations.jsonl (per-brand, append-only).
Never-edit rules
These are hard rules. Violations break prompt assembly invariants.
- Never put brand-payload literals in
brand_gen/*.py. No newSAGE_*,<BRAND>_*, or brand-coupled constants. The mechanism is brand-agnostic; payload lives in JSON or markdown. - Never hand-edit
.brand-gen/brands/<brand>/<contract>.jsonordata/*_brand_contract.json. Use the typed verb. The only exception is during a verb-development PR. - Never edit
data/aesthetic_capsules.jsondirectly. Usebgen add-aesthetic-capsule. - Never write to
<brand>/mutations.jsonlor<brand>/runs/*.jsonl. They are append-only audit logs. Verbs and the pipeline runner write to them; nothing else. - Read-only-after-launch markdown: if a
voice/*.mdfile has frontmatterread_only_after: <git-sha>, edits require human review. The verbose CLI greeting will warn agents about this.
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.
- 8d ago First seen · 103 lines · 2,054 tokens per session scan A 45b9319c4d09
brand-gen AGENTS.md is an instructions file published in the GitHub repository velinussage/brand-gen (0 stars, last pushed 3mo ago), licensed MIT. It adds 2,054 tokens to every session, about $0.0103 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.
Other instructions, from other repositories
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.