cursorrules

cursorrules is a cursor rule for Cursor from CGSOG-JumpStarts/JumpStart-AutoNav. It costs 627 tokens per session, scanned A, original, MIT.

A set of project rules for Jump Start, a specification-led coding framework. It requires current documentation for external tools and treats the written specification as the source of truth for the code.

In plain words
What is it for?
Use it when working in this framework, especially while checking external libraries or tools, evaluating technology choices, or changing code that differs from the specification.
Why use it?
It gives coding agents a consistent way to check technology details and resolve disagreements between specifications and implementation. This helps prevent silent divergence from the intended design.

Cursor rule for Cursor

Written for Cursor: installed under .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/cgsog-jumpstarts/jumpstart-autonav/cursorrules
Clone the repo
git clone --depth 1 https://github.com/CGSOG-JumpStarts/JumpStart-AutoNav

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 cursorrules

README.md
[![agentmods](https://agentmods.dev/badge/rules/cgsog-jumpstarts/jumpstart-autonav/cursorrules.svg)](https://agentmods.dev/rules/cgsog-jumpstarts/jumpstart-autonav/cursorrules)
Your own site
<a href="https://agentmods.dev/rules/cgsog-jumpstarts/jumpstart-autonav/cursorrules"><img src="https://agentmods.dev/badge/rules/cgsog-jumpstarts/jumpstart-autonav/cursorrules.svg" alt="Measured on agentmods" height="20"></a>
Per session 627 This file is loaded in full into every session.
When invoked 627 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 5.1 $0.00627 $0.00627
Opus 5 $0.00313 $0.00313
Sonnet 5 $0.00125 $0.00125
Haiku 4.5 $0.00063 $0.00063

Measured 6d ago against content hash da8ffbcb33f8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

cursorrules 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.

.cursorrules · 45 lines

How it starts

The opening of the file, as written. The whole thing — 45 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Jump Start Framework Rules

This project uses the Jump Start spec-driven agentic coding framework.

Context7 MCP Mandate (HIGH PRIORITY)

CRITICAL RULE: When referencing any external library, framework, CLI tool, or service — you MUST use Context7 MCP to fetch live, verified documentation. Never rely on training data for API signatures, configuration flags, version compatibility, or setup instructions.

How to use Context7:

  1. Resolve the library ID: mcp_context7_resolve-library-id with libraryName and query parameters
  2. Fetch current docs: mcp_context7_query-docs with libraryId (e.g., /vercel/next.js) and query parameters
  3. Add [Context7: library@version] citation marker in output

Full documentation: .jumpstart/guides/context7-usage.md

When required: Architect Phase 3 (freshness audit), Developer Phase 4 (external API code), Analyst Phase 1 (tech evaluation), any agent making technology claims.

Spec-First Power Inversion

Specs are the source of truth. Code is derived. If mismatch exists between spec and code, update the spec first or regenerate the code. Never silently diverge.

Command Routing

  • /jumpstart.scout -> Check project.type is brownfield. Read and follow .jumpstart/agents/scout.md
  • /jumpstart.challenge -> Read and follow .jumpstart/agents/challenger.md
  • /jumpstart.analyze -> Read and follow .jumpstart/agents/analyst.md
  • /jumpstart.plan -> Read and follow .jumpstart/agents/pm.md
  • /jumpstart.architect -> Read and follow .jumpstart/agents/architect.md
  • /jumpstart.build -> Read and follow .jumpstart/agents/developer.md
  • /jumpstart.pitcrew -> Read and follow .jumpstart/agents/facilitator.md (Pit Crew: multi-agent collaboration)
  • /jumpstart.status -> Check all spec files and report workflow state
  • /jumpstart.review -> Validate artifacts against templates

Rules

  1. Phases are sequential. Do not start a phase unless all preceding phases are approved.
  2. Follow agent personas exactly. Read the agent file before starting.
  3. Always ask for explicit human approval between phases.
  4. Use templates from .jumpstart/templates/.
  5. Read .jumpstart/config.yaml for settings.
  6. Specs go in specs/. Code in src/. Tests in tests/.
  7. Read .jumpstart/roadmap.md at activation. Roadmap principles are non-negotiable and supersede agent-specific instructions.
  8. Read .jumpstart/roadmap.md for engineering articles governing code quality and architecture decisions.
  9. Use Context7 MCP for ALL external documentation lookups. Never guess API details from training data.

Read the full file on GitHub · 45 lines

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. 6d ago First seen · 45 lines · 627 tokens per session scan A da8ffbcb33f8

Subscribe to this mod's changes

cursorrules is a cursor rule published in the GitHub repository CGSOG-JumpStarts/JumpStart-AutoNav (10 stars, last pushed 3mo ago), licensed MIT. It adds 627 tokens to every session, about $0.0031 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.