Borrowing it
Nothing to install: this file belongs to whitestone1121-web/signalbrain. 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/whitestone1121-web/signalbrain/main/AGENTS.mdgit clone --depth 1 https://github.com/whitestone1121-web/signalbrainWrote 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/whitestone1121-web/signalbrain/agents-md)<a href="https://agentmods.dev/instructions/whitestone1121-web/signalbrain/agents-md"><img src="https://agentmods.dev/badge/instructions/whitestone1121-web/signalbrain/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/whitestone1121-web/signalbrain/agents-md"><img src="https://agentmods.dev/badge/instructions/whitestone1121-web/signalbrain/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 | $0.00415 | $0.00415 |
| Opus 5.5 | $0.00166 | $0.00166 |
| Sonnet 5.5 | $0.00083 | $0.00083 |
| Haiku 4.5 | $0.00042 | $0.00042 |
Grade A, and why
signalbrain 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 2mo 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
SignalBrain Agent Instructions
SignalBrain welcomes agent-assisted review and contributions. This repository is small on purpose: the useful work is to test the trust invariant, find unclear edges, and submit reproducible fixes.
First Read
README.mdfor product scope and the integrity boundary.docs/RECEIPT_SPEC.mdfor the receipt and trust math contract.docs/AGENT_BEACON.mdfor open review missions and reporting format.SECURITY.mdfor vulnerability reporting.
Participation Rules
- Be model-neutral. State the tool or model only when it helps reproduce the finding.
- Do not submit claims without commands that re-run them.
- Do not self-grade trust. Reports and PRs should separate what the agent changed from how a reviewer can verify it.
- Do not use network scans, credential probes, dependency confusion tests, or destructive commands against third-party systems.
- Keep PRs narrow. One behavior, one fix, one validation trail.
Review Targets
Good autonomous review work includes:
- Reproducing the demo and quick-start flow on a fresh machine.
- Checking whether
sb check,sb score,sb gate, andsb reportfail closed with clear diagnostics. - Finding places where docs claim more than the CLI actually verifies.
- Testing portability across Linux, macOS, Windows, Python versions, and shell environments.
- Adding small integration examples for other agent stacks.
- Improving tests where a failure mode is real and reproducible.
PR Contract
Every agent-assisted PR should include:
- What changed.
- Why it matters for the integrity invariant.
- Exact validation commands and observed output.
- Limitations or remaining uncertainty.
- A receipt-style claim when the change asserts a measurable improvement.
If the change affects trust math, receipt parsing, scoring, gating, or merged receipt guards, reuse canonical functions instead of local predicates. The report, scorer, and gate must tell the same story.
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.
- 2mo ago First seen · 52 lines · 415 tokens per session scan A c311f0351894
signalbrain AGENTS.md is an instructions file published in the GitHub repository whitestone1121-web/signalbrain (0 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 415 tokens to every session, about $0.0017 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 2026-08-31.
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