context-discovery

A rule requiring the agent to check saved task, project, and related-repository context before doing a broad search or describing an existing decision.

In plain words
What is it for?
Use it before broad repository searches, live checks, or explanations of why an existing project choice was made.
Why use it?
It helps the agent use the project's durable notes and avoid missing decisions that were recorded earlier.

Cursor rule for Cursor

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.

agentmods
npx agentmods add rules/rdudov/task-agent/context-discovery
Clone the repo
git clone --depth 1 https://github.com/rdudov/task-agent

Made for: Cursor.

Per session 79 This file is loaded in full into every session.
When invoked 79 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00079 $0.00079
Opus 5 $0.00039 $0.00039
Sonnet 5 $0.00016 $0.00016
Haiku 4.5 $0.00008 $0.00008

Measured yesterday against content hash 7a9f28d77dbf, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

context-discovery 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 yesterday.

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.

.cursor/rules/context-discovery.mdc · 11 lines

What it actually says

Context Discovery

Before broad search, a live check, or describing an existing decision, invoke context-discovery and follow skills/context-discovery/SKILL.md. This Cursor rule owns only the trigger; the skill owns the lookup and promotion procedure.

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. yesterday First seen · 11 lines · 79 tokens per session scan A 7a9f28d77dbf

Subscribe to this mod's changes

context-discovery is a cursor rule published in the GitHub repository rdudov/task-agent (4 stars, last pushed 2d ago), licensed MIT. It adds 79 tokens to every session, about $0.0004 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.