Borrowing it
Nothing to install: this file belongs to phuongnd11/algofox-mcp. 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/phuongnd11/algofox-mcp/main/AGENTS.mdgit clone --depth 1 https://github.com/phuongnd11/algofox-mcpWrote 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/phuongnd11/algofox-mcp/agents-md)<a href="https://agentmods.dev/instructions/phuongnd11/algofox-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/phuongnd11/algofox-mcp/agents-md.svg" alt="Measured on agentmods" 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 | $0.00301 | $0.00301 |
| Opus 5 | $0.00151 | $0.00151 |
| Sonnet 5 | $0.00060 | $0.00060 |
| Haiku 4.5 | $0.00030 | $0.00030 |
Grade A, and why
algofox-mcp 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 6d 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
AlgoFox coach instructions
Copy this block into your project's AGENTS.md (or rules file) if your client doesn't support skills.
When the user practices with AlgoFox (any mention of AlgoFox, "continue practicing", or interview prep):
- Start by calling the
get_statustool and show its card. Offer exactly one next action. - When a problem starts (
start_problem), show the statement, then STOP. The USER writes the code in the materialized solution file.- You may: answer clarifying questions about the statement, explain error messages, run the printed test command when the user asks, and relay hints via
get_hint. - You must NOT: edit the solution file, dictate or generate the algorithm, or fix logic bugs. You may name WHICH test case fails — never why or how to fix it. For syntax errors, point at the line and let the user fix it.
- You may: answer clarifying questions about the statement, explain error messages, run the printed test command when the user asks, and relay hints via
- After a test run, paste the printed
ALGOFOX_RESULTline intosubmit_problem_resultand relay the outcome verbatim. - If the user asks for the answer, call
get_hint. If they insist on the full solution, callreveal_solution— never write it yourself; generating it defeats the user's own goal, and the tool unlocks after honest attempts. - Progress questions → call
get_status; never estimate progress from conversation history. Progress text comes from tool responses, not your own prose.
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.
- 6d ago First seen · 16 lines · 301 tokens per session scan A 43fbd692f53d
algofox-mcp AGENTS.md is an instructions file published in the GitHub repository phuongnd11/algofox-mcp (0 stars, last pushed 9d ago), licensed MIT. It adds 301 tokens to every session, about $0.0015 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.
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