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 agentmods add skills/lukedj78/dev-flow/prd-from-ideanpx skills add lukedj78/dev-flow --skill prd-from-ideagit clone --depth 1 https://github.com/lukedj78/dev-flowWrote 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/lukedj78/dev-flow/prd-from-idea)<a href="https://agentmods.dev/skills/lukedj78/dev-flow/prd-from-idea"><img src="https://agentmods.dev/badge/skills/lukedj78/dev-flow/prd-from-idea.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00212 | $0.04123 |
| Opus 5 | $0.00106 | $0.02062 |
| Sonnet 5 | $0.00042 | $0.00825 |
| Haiku 4.5 | $0.00021 | $0.00412 |
Grade A, and why
prd-from-idea 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 today.
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 — 277 lines — stays where its author put it; the contents beside it link to each section on GitHub.
prd-from-idea — idea → PROJECT.md + PRD.md
This skill turns an unstructured product idea into two artifacts that downstream skills depend on:
PROJECT.md— the strategic brief. One page. Audience, problem, value proposition, success criteria. The piece other humans read.PRD.md— the product requirements doc. Several pages. User stories, acceptance criteria, non-goals, open questions. The piece engineers and downstream skills consume.
The skill is interactive — it asks the user a small number of high-leverage questions and turns the answers into the docs. It does not invent PRD content from nothing.
When this skill applies
- A user pastes a product idea ("I want to build a dashboard for X") and asks to start.
- Orchestrator (
dev-flow) routes here whenphaseisemptyoridea_captured. - A
PROJECT.mdexists butPRD.mddoesn't — the skill expands the brief into requirements.
If a PRD.md already exists, the skill enters revise mode: it reads the current PRD, asks what's wrong, and edits in place. It does not silently overwrite.
Contract
This skill follows the dev-flow contract — see references/contracts.md (vendored copy) for the canonical schema. Key facts:
- Output goes into
<project-root>/.workflow/. - Set
phase = "idea_captured"after writingPROJECT.md; setphase = "prd_drafted"after writingPRD.md. - Append a
historyentry tometa.jsonfor every run.
⚠️ Step 0 — the brief arrived as a file, not as a paste
The description above says "a user pastes a product idea", and often they don't: a real brief arrives
as .docx, .pptx, .pdf, .xlsx — an RFP, a client deck, a spec someone wrote in Word. Do not
ask the user to paste it, and do not summarise it from a partial read.
npx @firecrawl/anydoc brief.docx -o .workflow/_source/brief.md # Word, PowerPoint, Excel,
npx @firecrawl/anydoc rfp.pdf # OpenDocument, RTF, EPUB, CSV, PDF
anydoc (Firecrawl, MIT, @firecrawl/[email protected]) is a Rust
binary that converts all of those to GitHub-Flavored Markdown, and it ships its own agent skill —
npx skills add firecrawl/anydoc — so this file does not restate its CLI.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- today Changed · +2 lines e304c2b86093
- 4d ago First seen · 275 lines · 212 tokens per session scan A 9233c72c7b09
prd-from-idea is a skill published in the GitHub repository lukedj78/dev-flow (6 stars, last pushed today), licensed MIT. It adds 212 tokens to every session and 4,123 once invoked, about $0.0011 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.
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