sdr-spec

sdr-spec is a skill for Claude Code, Codex from JoeSagera/Spec-Driven-Research. It costs 59 tokens per session (3,164 once invoked), scanned A, original, MIT.

A product-specification step in the Spec-Driven Research framework, which turns a validated business proposal into detailed requirements. It produces user stories, acceptance criteria, and roadmap evidence for a later product requirements document.

In plain words
What is it for?
Use it to define product requirements after proposal validation and save the specification in the project’s chosen artifact store.
Why use it?
It translates a business idea into concrete instructions that developers can build and check.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents.

Good fit Use it to define product requirements after proposal validation and save the specification in the project’s chosen artifact store.

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Install with agentmods
npx agentmods add skills/joesagera/spec-driven-research/sdr-spec
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.

Any agent
npx skills add JoeSagera/Spec-Driven-Research --skill sdr-spec
Clone the repo
git clone --depth 1 https://github.com/JoeSagera/Spec-Driven-Research

Made for: Claude Code, Codex.

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 sdr-spec

README.md
[![agentmods](https://agentmods.dev/badge/skills/joesagera/spec-driven-research/sdr-spec.svg)](https://agentmods.dev/skills/joesagera/spec-driven-research/sdr-spec)
Your own site
<a href="https://agentmods.dev/skills/joesagera/spec-driven-research/sdr-spec"><img src="https://agentmods.dev/badge/skills/joesagera/spec-driven-research/sdr-spec.svg" alt="Measured on agentmods" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,164 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 $0.00059 $0.03164
Opus 5 $0.00030 $0.01582
Sonnet 5 $0.00012 $0.00633
Haiku 4.5 $0.00006 $0.00316

Measured 6d ago against content hash 86ea3d587df5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

sdr-spec 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.

skills/sdr-spec/SKILL.md · 326 lines

How it starts

The opening of the file, as written. The whole thing — 326 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Purpose

You are a sub-agent responsible for PRODUCT SPECIFICATION EVIDENCE. You take a validated business proposal from Phase 2 (sdr/{project}/proposal) and produce concise, buildable requirement evidence that later feeds the single final PRD.

Your output bridges the gap between "what the business wants" and "what the team will build."

What You Receive

From the orchestrator:

  • Project name ({project})
  • Artifact store mode (engram | openspec | hybrid | none)
  • (Optional) Team capacity constraints, budget, or timeline context

Execution and Persistence Contract

Follow Section B (retrieval) and Section C (persistence) from skills/_shared/sdr-phase-common.md.

  • engram: Read sdr/{project}/proposal (required). Save product specification evidence as sdr/{project}/spec.
  • openspec: Read and follow skills/_shared/openspec-convention.md. Write specification evidence to openspec/sdr/{project}/spec.md.
  • hybrid: Follow BOTH conventions — persist to Engram AND write domain files to filesystem.
  • none: Return result only. Never create or modify project files.

What to Do

Step 1: Load Skills

Follow Section A from skills/_shared/sdr-phase-common.md.

Step 2: Retrieve the Business Proposal

CRITICAL: mem_search returns 300-char PREVIEWS, not full content. You MUST call mem_get_observation(id) for the proposal artifact.

mem_search(query: "sdr/{project}/proposal", project: "{project}") → save ID
mem_get_observation(id: {saved_id}) → full proposal content (REQUIRED)

Do NOT use search previews as source material. Read the full proposal before proceeding.

Step 3: Decompose the Proposal

Extract and categorize from the proposal and founder intake:

Section What to Extract
Problem Statement User pain points, target personas, frequency/severity
Solution Vision High-level capabilities, key differentiators
Market / Business Success metrics, KPIs, revenue model, timeline
Constraints Budget, compliance, technical limits, team capacity
Founder Fit launch quality, risk tolerance, AI workflow expectations

Read the full file on GitHub · 326 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 · 326 lines · 59 tokens per session scan A 86ea3d587df5

Subscribe to this mod's changes

sdr-spec is a skill published in the GitHub repository JoeSagera/Spec-Driven-Research (2 stars, last pushed 3mo ago), licensed MIT. It adds 59 tokens to every session and 3,164 once invoked, about $0.0003 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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