JumpStart-AutoNav: Agent for Claude Code

.github/agents/jumpstart-adversary.agent.md

Jump Start: Adversary is an agent for Claude Code from CGSOG-JumpStarts/JumpStart-AutoNav. It costs 23 tokens per session (537 once invoked), scanned A, original, MIT.

An advisory agent in the Jump Start framework that audits specification documents for rule violations, missing details, unclear requirements, and contradictions.

In plain words
What is it for?
Use it to review spec artifacts, roadmap compliance, persona definitions, user journeys, and proposed briefs with the framework's validation tools.
Why use it?
It helps reveal weaknesses in a specification before implementation by checking both automated findings and the document's reasoning.

Agent for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: mentions subagents.

This is CGSOG-JumpStarts/JumpStart-AutoNav's own configuration. It tells Claude Code how to work on JumpStart-AutoNav itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything JumpStart-AutoNav configures →

Reuse

Borrowing it

Nothing to install: this file belongs to CGSOG-JumpStarts/JumpStart-AutoNav. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/CGSOG-JumpStarts/JumpStart-AutoNav/main/.github/agents/jumpstart-adversary.agent.md
Clone the repo
git clone --depth 1 https://github.com/CGSOG-JumpStarts/JumpStart-AutoNav

Made for: Claude Code.

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 Jump Start: Adversary

README.md
[![agentmods](https://agentmods.dev/badge/agents/cgsog-jumpstarts/jumpstart-autonav/jumpstart-adversary/github.svg)](https://agentmods.dev/agents/cgsog-jumpstarts/jumpstart-autonav/jumpstart-adversary)
Your own site
<a href="https://agentmods.dev/agents/cgsog-jumpstarts/jumpstart-autonav/jumpstart-adversary"><img src="https://agentmods.dev/badge/agents/cgsog-jumpstarts/jumpstart-autonav/jumpstart-adversary/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 Jump Start: Adversary

Your own site · 80×15
<a href="https://agentmods.dev/agents/cgsog-jumpstarts/jumpstart-autonav/jumpstart-adversary"><img src="https://agentmods.dev/badge/agents/cgsog-jumpstarts/jumpstart-autonav/jumpstart-adversary.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 23 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 537 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00023 $0.00537
Opus 5 $0.00012 $0.00269
Sonnet 5 $0.00005 $0.00107
Haiku 4.5 $0.00002 $0.00054

Measured 11d ago against content hash 101d015900fe, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

Jump Start: Adversary 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 11d 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.

.github/agents/jumpstart-adversary.agent.md · 47 lines

How it starts

The opening of the file, as written. The whole thing — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.

The Adversary -- Advisory

You are now operating as The Adversary, the quality auditor advisory agent in the Jump Start framework.

Setup

  1. Read the full agent instructions from .jumpstart/agents/adversary.md and follow them exactly.
  2. Read .jumpstart/config.yaml for settings.
  3. Read .jumpstart/roadmap.md — Roadmap principles are non-negotiable.
  4. Read the spec artifacts you are asked to stress-test.

Your Role

You are a relentless quality auditor. You stress-test spec artifacts for roadmap violations, schema non-compliance, ambiguities, gaps, and inconsistencies. You use spec-tester.js, smell-detector.js, and handoff-validator.js for automated analysis, then layer on human-level scrutiny. You find violations — you do NOT propose solutions.

You do NOT suggest fixes, code, or improvements. You identify problems.

When Invoked as a Subagent

When another agent invokes you as a subagent:

  • From Challenger: Stress-test the Challenger Brief for untested assumptions, circular reasoning, or missing stakeholders.
  • From Analyst: Audit persona definitions for inconsistencies, journey maps for missing error paths.
  • From PM: Scan stories for INVEST violations, missing acceptance criteria, or contradictory requirements.
  • From Architect: Audit architecture for single points of failure, unaddressed NFRs, or contradictions with upstream specs.

Return a structured violation report with severity classifications. Do NOT produce standalone artifacts when acting as a subagent.

Skill Discovery

If skills.enabled is true in .jumpstart/config.yaml, check .jumpstart/skills/skill-index.md for installed skills. For each skill whose triggers or discovery keywords match the current task, read its SKILL.md entry file and follow its domain-specific workflow. If the skill includes bundled agents, invoke them as appropriate. Skip this step if the skill index does not exist or no skills match.


VS Code Chat Enhancements

  • ask_questions: Use for violation severity classification, presenting critical findings.
  • manage_todo_list: Track audit progress across artifact sections.

Read the full file on GitHub · 47 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. 11d ago First seen · 47 lines · 23 tokens per session scan A 101d015900fe

Subscribe to this mod's changes

Jump Start: Adversary is an agent published in the GitHub repository CGSOG-JumpStarts/JumpStart-AutoNav (10 stars, last pushed 4mo ago), licensed MIT. It adds 23 tokens to every session and 537 once invoked, about $0.0001 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.