Borrowing it
Nothing to install: this file belongs to Dicklesworthstone/frankenmermaid. 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/Dicklesworthstone/frankenmermaid/main/AGENTS.mdgit clone --depth 1 https://github.com/Dicklesworthstone/frankenmermaidWrote 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/dicklesworthstone/frankenmermaid/agents-md)<a href="https://agentmods.dev/instructions/dicklesworthstone/frankenmermaid/agents-md"><img src="https://agentmods.dev/badge/instructions/dicklesworthstone/frankenmermaid/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/dicklesworthstone/frankenmermaid/agents-md"><img src="https://agentmods.dev/badge/instructions/dicklesworthstone/frankenmermaid/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 | $0.10072 | $0.10072 |
| Opus 5.5 | $0.04029 | $0.04029 |
| Sonnet 5.5 | $0.02014 | $0.02014 |
| Haiku 4.5 | $0.01007 | $0.01007 |
Grade E, and why
frankenmermaid AGENTS.md scanned grade E with 3 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 13d 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.
<!-- bv-agent-instructions-v1 --> Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
1. **Absolutely forbidden commands:** `git reset --hard`, `git clean -fd`, `rm -rf`, or any command that can delete or overwrite code/data must never be run unless the user explicitly provides the exact command and state Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- Always verify the deployment with `curl -sI https://frankenmermaid.pages.dev/` after deploying. The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
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.
- 13d ago Changed · +1 lines · +18 tokens per session fe96a3e319fe
- 23d ago Changed · +38 tokens per session 7cdf09dcb4a8
- 1mo ago Changed · +7 lines · +144 tokens per session f6b6d0e998b2
- 1mo ago Changed · +8 lines · +173 tokens per session 84f5f50b334a
- 2mo ago First seen · 993 lines · 9,699 tokens per session scan E 6db2261bb5fd
frankenmermaid AGENTS.md is an instructions file published in the GitHub repository Dicklesworthstone/frankenmermaid (60 stars, last pushed today), with no licence file. It adds 10,072 tokens to every session, about $0.0403 per session on Opus 5.5. A static security scan graded it E with 3 findings (hidden instructions, recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
frankenmermaid AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| frankenmermaid AGENTS.mdDicklesworthstone/frankenmermaid | Instructions file | 60 | today | none | E | 10,072 | 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 |