ctx

ctx is a cursor rule for Cursor from tabnine/skills. It costs 231 tokens per session, scanned A, original, no licence file.

A repository and service investigation rule that uses the Context Engine command-line tool to search code and related project knowledge. It also covers investigating security findings and applying coding guidelines.

In plain words
What is it for?
It is for searching code, investigating services, triaging or resolving CVE and SAST findings, and following project coding rules.
Why use it?
It gives the agent a defined way to find relevant code and context when a change or security issue spans multiple parts of a project.

Cursor rule for Cursor

Written for Cursor: a Cursor rule (.mdc).

Good fit It is for searching code, investigating services, triaging or resolving CVE and SAST findings, and following project coding rules.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/tabnine/skills/ctx
Install

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.

Clone the repo
git clone --depth 1 https://github.com/tabnine/skills

Made for: Cursor.

Wrote 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.

agentmods badge for ctx

README.md
[![agentmods](https://agentmods.dev/badge/rules/tabnine/skills/ctx/github.svg)](https://agentmods.dev/rules/tabnine/skills/ctx)
Your own site
<a href="https://agentmods.dev/rules/tabnine/skills/ctx"><img src="https://agentmods.dev/badge/rules/tabnine/skills/ctx/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.

agentmods 80×15 button for ctx

Your own site · 80×15
<a href="https://agentmods.dev/rules/tabnine/skills/ctx"><img src="https://agentmods.dev/badge/rules/tabnine/skills/ctx.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 231 This file is loaded in full into every session.
When invoked 231 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00231 $0.00231
Opus 5.5 $0.00092 $0.00092
Sonnet 5.5 $0.00046 $0.00046
Haiku 4.5 $0.00023 $0.00023

Measured 1mo ago against content hash d20b3454188c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ctx 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.

plugins/cursor/ctx/rules/ctx.mdc · 12 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

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.

  1. 1mo ago First seen · 12 lines · 231 tokens per session scan A d20b3454188c

Subscribe to this mod's changes

ctx is a cursor rule published in the GitHub repository tabnine/skills (9 stars, last pushed 2mo ago), with no licence file. It adds 231 tokens to every session, about $0.0009 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.