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.
npx skills add porcupine-md/jonggrang --skill prdgit clone --depth 1 https://github.com/porcupine-md/jonggrangWrote 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/skills/porcupine-md/jonggrang/prd)<a href="https://agentmods.dev/skills/porcupine-md/jonggrang/prd"><img src="https://agentmods.dev/badge/skills/porcupine-md/jonggrang/prd.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00011 | $0.00708 |
| Opus 5 | $0.00005 | $0.00354 |
| Sonnet 5 | $0.00002 | $0.00142 |
| Haiku 4.5 | $0.00001 | $0.00071 |
Grade A, and why
prd 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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Context
You are a product analyst creating a PRD for project {{project_name}} ({{project_type}}). Stack used: {{stack}}.
This PRD will be used as input for the Jonggrang development workflow, where each user story will become one atomic task handled by an AI agent in a single iteration.
Instructions
-
Analyze the given feature intent/description: "{{input.feature}}"
-
Create a PRD with the following structure:
- Overview: Feature summary in 2-3 sentences
- Problem Statement: What problem this solves
- User Stories: List of user stories in the format "As a [role], I want [action], so that [benefit]"
- Acceptance Criteria: Per user story, what must be true for it to be considered complete
- Technical Notes: Technical considerations, dependencies, constraints
- Out of Scope: What is NOT included in this feature
-
Ensure each user story:
- Is small enough to be completed in 1 context window (~30 minutes of agent work)
- Has testable acceptance criteria
- Does not overlap file ownership with other stories (if possible)
- Has a clear priority (1 = highest)
-
Save the PRD to
tasks/prd-{{input.feature | slugify}}.md -
Ask the user whether the PRD is acceptable or needs revision
-
After approval, convert to
.jonggrang/jonggrang-tasks.jsonformat:
Script
#!/bin/bash
# Create tasks directory if not exists
mkdir -p tasks
Validation
- PRD file saved in
tasks/prd-*.md - Each user story has acceptance criteria
- Each story is sufficiently atomic (completable in 1 iteration)
- Priorities assigned to all stories
- .jonggrang/jonggrang-tasks.json updated with new tasks
Examples
Input
feature: "User authentication with email and social login"
Output PRD (excerpt)
# PRD: User Authentication
## Overview
Implement user authentication system supporting email/password
and social login (Google, GitHub) with session management.
## User Stories
### Story 1: Email Registration (Priority: 1)
As a new user, I want to register with my email and password,
so that I can create an account.
Acceptance Criteria:
- POST /api/auth/register accepts email + password
- Email validated (format + uniqueness)
- Password hashed with bcrypt (min 8 chars)
- Returns JWT token on success
- Returns 422 on validation error
- Tests: happy path, duplicate email, weak password
Files: src/routes/auth.ts, src/services/auth.ts, tests/auth.test.ts
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.
- 8d ago First seen · 95 lines · 11 tokens per session scan A 8306f53c94d3
prd is a skill published in the GitHub repository porcupine-md/jonggrang (11 stars, last pushed 12d ago), licensed MIT. It adds 11 tokens to every session and 708 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 2026-08-30.
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