Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add rules/tlb-station/apivault-mcp/apivaultgit clone --depth 1 https://github.com/TLB-STATION/apivault-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/rules/tlb-station/apivault-mcp/apivault)<a href="https://agentmods.dev/rules/tlb-station/apivault-mcp/apivault"><img src="https://agentmods.dev/badge/rules/tlb-station/apivault-mcp/apivault.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 | $0.00000 | $0.00213 |
| Opus 5 | $0.00000 | $0.00106 |
| Sonnet 5 | $0.00000 | $0.00043 |
| Haiku 4.5 | $0.00000 | $0.00021 |
Grade A, and why
apivault 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 4d 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
ApiVault MCP Agent Guidelines
When using ApiVault MCP tools (list_keys, get_key, reveal_key, add_key, update_key, delete_key):
- Discovery First: Use
list_keysto check existing services and environments before adding duplicate keys or requesting raw values. - Minimal Disclosure: Only call
reveal_keywhen raw secret values are strictly necessary for local process execution or debugging. - No Secrets in Chat: Never echo, paste, or print unmasked API secrets in chat messages, markdown files, or commit logs.
- Environment Awareness: Pass the target environment (
Production,Staging,Development) when listing or creating keys. - Custom Vault Key: If
reveal_keyreturnsVAULT_KEY_REQUIRED, prompt the user for their custom vault key and supply it invault_key.
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.
- 4d ago First seen · 16 lines · 213 tokens per session scan A 74660e68f564
apivault is a cursor rule published in the GitHub repository TLB-STATION/apivault-mcp (0 stars, last pushed 12d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 213 tokens. 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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