ss-build

ss-build is a skill for Claude Code from MartyBonacci/specswarm. It costs 21 tokens per session (606 once invoked), scanned A, original, MIT.

A workflow for building software features from written specifications. It turns a clear request, such as adding authentication or a dashboard, into the project’s specified build process.

In plain words
What is it for?
Use it when creating, adding, or implementing a software feature or component. For vague requests, it can ask for enough detail before starting.
Why use it?
It gives feature work a defined path and helps keep implementation tied to what the feature is meant to do.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the AskUserQuestion tool; mentions Claude Code.

Part of the ss plugin — 10 skills, 34 commands, 6 agents, 4 hooks shipped together

Good fit Use it when creating, adding, or implementing a software feature or component. For vague requests, it can ask for enough detail before starting.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/martybonacci/specswarm/ss-build
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 MartyBonacci/specswarm --skill ss-build
Clone the repo
git clone --depth 1 https://github.com/MartyBonacci/specswarm

Made for: Claude Code.

Or install ss, the plugin that ships this one along with the rest of its 10 skills, 34 commands, 6 agents, 4 hooks.

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 ss-build

README.md
[![agentmods](https://agentmods.dev/badge/skills/martybonacci/specswarm/ss-build.svg)](https://agentmods.dev/skills/martybonacci/specswarm/ss-build)
Your own site
<a href="https://agentmods.dev/skills/martybonacci/specswarm/ss-build"><img src="https://agentmods.dev/badge/skills/martybonacci/specswarm/ss-build.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 606 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 pass 7 Sept 2026
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 $0.00021 $0.00606
Opus 5 $0.00010 $0.00303
Sonnet 5 $0.00004 $0.00121
Haiku 4.5 $0.00002 $0.00061

Measured 8d ago against content hash f6eb5d3078ce, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

ss-build 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.

plugins/ss/skills/ss-build/SKILL.md · 86 lines

How it starts

The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SpecSwarm Build Workflow

Provides natural language access to /ss:build command.

Dynamic Context

Current build state: !cat .specswarm/build-loop.state 2>/dev/null || echo "No active build"

When to Invoke

Trigger this skill when the user mentions:

  • Building, creating, or adding features
  • Implementing or developing functionality
  • Making or adding components
  • Any request to build software features

Examples:

  • "Build user authentication"
  • "Create a payment system"
  • "Add dashboard analytics"
  • "Implement shopping cart"

Instructions

Skill-Based Routing:

  1. Detect that user mentioned building/creating software

  2. Extract the feature description from their message

  3. Route based on intent clarity:

    Clear intent - Execute directly:

    • Clear feature requests: "Please build a simple website", "Create user authentication with JWT", "Add dashboard analytics"
    • Action: Immediately run /ss:build "feature description"

    Ambiguous intent - Ask for confirmation:

    • Less specific: "Add authentication", "Work on the app"
    • Action: Use AskUserQuestion tool with two options:
      • Option 1 (label: "Run /ss:build"): Use SpecSwarm's complete workflow
      • Option 2 (label: "Process normally"): Handle as regular Claude Code request
  4. If user selects Option 2, process normally without SpecSwarm

  5. After command completes, STOP - do not continue with ship/merge

What the Build Command Does

/ss:build runs complete workflow:

  • Creates specification
  • Asks clarifying questions
  • Generates implementation plan
  • Breaks down into tasks
  • Implements all tasks
  • Validates quality

Stops after implementation - does NOT merge/ship/deploy.

Semantic Understanding

This skill should trigger not just on exact keywords, but semantic equivalents:

Build equivalents: build, create, make, develop, implement, add, construct, set up, establish, design Feature terms: feature, component, functionality, module, system, page, form, interface

Read the full file on GitHub · 86 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. 8d ago First seen · 86 lines · 21 tokens per session scan A f6eb5d3078ce

Subscribe to this mod's changes

ss-build is a skill published in the GitHub repository MartyBonacci/specswarm (65 stars, last pushed 1mo ago), licensed MIT. It adds 21 tokens to every session and 606 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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