Contract Builder

Contract Builder is an Automation skill for Claude Code, published by MageByte-Zero in spec-superflow.

759 stars75 forkson MageByte-Zero/spec-superflowAdded 2026/08/23+1% in starsRepository updated 2026/08/16

ai-codingamazon-qclaude-codeclinecodexcopilot-clicursorgemini-cliopencodeopensourceopenspecskillsspec-driven-developmentspec-firstsuperpowerstddtraewindsurfworkflow

Install in seconds

Install Contract Builder

Copy Contract Builder into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/MageByte-Zero/spec-superflow/tree/main/skills/contract-builder ~/.claude/skills/contract-builder

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/MageByte-Zero/spec-superflow.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/contract-builder/SKILL.md in MageByte-Zero/spec-superflow
Installs to: ~/.claude/skills/contract-builder
Collection: One of 9 skills cataloged from this repository
Category: Automation — 1523 skills

What Contract Builder does

Contract Builder converts approved planning artifacts into a single execution contract for implementation. Use it when moving from planning to build or when the current execution contract is missing or stale.

Contract Builder is cataloged under Automation on DirSkills. Contract Builder comes from a repository tagged ai-coding, amazon-q, claude-code, cline and codex.

Documentation

README

Excerpt

Contract Builder

Converts planning artifacts into a single execution handshake: execution-contract.md. Load the baseline with ssf runtime asset read templates/execution-contract.md.

Read before generating: .spec-superflow.yaml (especially dp_0_decisions), proposal.md, specs/, design.md, tasks.md, then load docs/artifact-contract.md with ssf runtime asset read docs/artifact-contract.md.

Artifact Language

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Contract Builder

What else does MageByte-Zero publish alongside Contract Builder?
Contract Builder is one of 9 skills that DirSkills catalogs from MageByte-Zero/spec-superflow, the repository it ships in. Its siblings there include Bug Investigator, Build Executor and Code Reviewer. Each one is a separate skill with its own page in this directory, installs the same way Contract Builder does, and is maintained by MageByte-Zero in that same repository. The rest of the collection is listed on the MageByte-Zero/spec-superflow page.
How does Contract Builder compare to other Automation skills?
Contract Builder ranks #1025 by stars among the 1523 Automation skills in this catalog. The most-starred ones next to it are Autonomous Loops, Autonomous Agent Harness and Automation Audit Ops. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Contract Builder against them. Open each page to compare what they document and how they install.