spec-workflow

spec-workflow is a skill for Claude Code from gosha70/code-copilot-team. It costs 29 tokens per session (1,113 once invoked), scanned A, original, MIT.

A process for writing a software design specification before building a feature, with different levels of detail based on the change’s risk. SDD means Software Design Document.

In plain words
What is it for?
Use it to classify changes, create specifications and task lists, approve plans, and organize feature documents.
Why use it?
It makes important decisions and requirements explicit before implementation, reducing the chance of building the wrong thing or overlooking risks.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the code-copilot-team plugin — 24 skills shipped together

Good fit Use it to classify changes, create specifications and task lists, approve plans, and organize feature documents.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/gosha70/code-copilot-team/spec-workflow
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 gosha70/code-copilot-team --skill spec-workflow
Clone the repo
git clone --depth 1 https://github.com/gosha70/code-copilot-team

Made for: Claude Code.

Or install code-copilot-team, the plugin that ships this one along with the rest of its 24 skills.

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 spec-workflow

README.md
[![agentmods](https://agentmods.dev/badge/skills/gosha70/code-copilot-team/spec-workflow/github.svg)](https://agentmods.dev/skills/gosha70/code-copilot-team/spec-workflow)
Your own site
<a href="https://agentmods.dev/skills/gosha70/code-copilot-team/spec-workflow"><img src="https://agentmods.dev/badge/skills/gosha70/code-copilot-team/spec-workflow/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 spec-workflow

Your own site · 80×15
<a href="https://agentmods.dev/skills/gosha70/code-copilot-team/spec-workflow"><img src="https://agentmods.dev/badge/skills/gosha70/code-copilot-team/spec-workflow.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,113 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Agent Snooping · line 71
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
How audits are shown
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 $0.00029 $0.01113
Opus 5.5 $0.00012 $0.00445
Sonnet 5.5 $0.00006 $0.00223
Haiku 4.5 $0.00003 $0.00111

Measured 1mo ago against content hash 089ece87f003, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

spec-workflow 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 1mo 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.

adapters/claude-code/plugin/skills/spec-workflow/SKILL.md · 120 lines

How it starts

The opening of the file, as written. The whole thing — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Spec Workflow — SDD Specification Protocol

Rules governing when a Software Design Document (SDD) spec is required, what sections it must contain, and how it gates the transition from Plan to Build.

Risk-Based spec_mode Classification

Every planned feature is assigned a spec_mode based on change risk. The Plan agent determines this value and records it in specs/<feature-id>/plan.md YAML frontmatter.

spec_mode When to use
full Security changes, schema changes, integration work, features touching more than 2 files
lightweight Features touching 1–2 files, non-critical changes
none Bug fixes (non-security), docs-only changes, trivial or cosmetic changes

When in doubt, escalate to the next higher mode. Under-speccing a risky change costs more than over-speccing a safe one.

Required Spec Sections per Mode

full

All sections from spec-template.md are required, plus a tasks.md task breakdown:

  • User Scenarios
  • Requirements
  • Constraints / What NOT to Build
  • Key Entities
  • Success Criteria
  • tasks.md — discrete, bounded build tasks derived from the spec

lightweight

Only two sections are required in spec.md:

  • Requirements
  • Constraints

none

No spec.md is required. The Plan agent writes only plan.md.

Plan Approval Gate Protocol

What the Plan Agent Writes

The Plan agent always writes specs/<feature-id>/plan.md regardless of spec_mode. The file must include YAML frontmatter with at minimum:

---
feature_id: <feature-id>
spec_mode: full | lightweight | none
status: draft | approved
origin:
  # at least one of: issue, urls, transcripts — OR the explicit
  # internal/unrecoverable exemption. See origin-confirmation skill.
  issue: <repo>#<number>
  urls:
    - <external-reference-url>
  transcripts:
    - specs/<feature-id>/origin/<date>-<slug>.md
  origin_claim: |
    One paragraph in the user's words quoting their original ask.
---

Read the full file on GitHub · 120 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. 1mo ago First seen · 120 lines · 29 tokens per session scan A 089ece87f003

Subscribe to this mod's changes

spec-workflow is a skill published in the GitHub repository gosha70/code-copilot-team (7 stars, last pushed 17d ago), licensed MIT. It adds 29 tokens to every session and 1,113 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-09-03.

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