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.
git clone --depth 1 https://github.com/context-dot-dev/cursor-pluginWrote 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/context-dot-dev/cursor-plugin/context-dev-api-security)<a href="https://agentmods.dev/rules/context-dot-dev/cursor-plugin/context-dev-api-security"><img src="https://agentmods.dev/badge/rules/context-dot-dev/cursor-plugin/context-dev-api-security/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/rules/context-dot-dev/cursor-plugin/context-dev-api-security"><img src="https://agentmods.dev/badge/rules/context-dot-dev/cursor-plugin/context-dev-api-security.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 | $0.00012 | $0.00210 |
| Opus 5.5 | $0.00005 | $0.00084 |
| Sonnet 5.5 | $0.00002 | $0.00042 |
| Haiku 4.5 | $0.00001 | $0.00021 |
Grade A, and why
context-dev-api-security 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 1mo 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
context-dev-api-security:
- Use Cursor OAuth for the bundled
contextMCP server. Never ask users to paste an MCP credential into chat. - When application code calls the REST API or SDK directly, never expose
CONTEXT_DEV_API_KEYin browser bundles, client-side environment variables, logs, or committed files. Read it server-side and proxy browser requests through a backend. - For high-volume logo rendering in UI, use Logo Link (
https://logos.context.dev/?publicClientId=...&domain=...) with a public client ID instead of calling the brand API from the frontend. - Handle 422 responses from email-based endpoints as "skip enrichment" for free or disposable email providers.
- Treat browser actions, monitor changes, and batch lifecycle operations according to their real side effects. Require explicit user intent before an operation can submit forms, trigger webhooks, overwrite monitor configuration, cancel work, or delete stored data.
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.
- 1mo ago First seen · 13 lines · 12 tokens per session scan A 2880e0c53226
context-dev-api-security is a cursor rule published in the GitHub repository context-dot-dev/cursor-plugin (10 stars, last pushed 13d ago), licensed MIT. It adds 12 tokens to every session and 210 once invoked, about $0.0000 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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