skills.rest
gapfDev
gapfDevCOMMUNITY
Explore all skills by this author →
GitHub

contract-engineering

Validate B3→B4 payload contracts against the shared/contracts.md schema.

Updated Aug 27, 2026
Search Tags:#validation#schema#engineering#handoff#bdd#contract
One-click install
npx skills add https://github.com/gapfDev/workflow --skill contract-engineering
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: contract-engineering
Source: https://github.com/gapfDev/workflow/tree/main/c1.5/.claude/skills/contract-engineering
Command: npx skills add https://github.com/gapfDev/workflow --skill contract-engineering

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Handoff contracts between producer and consumer components (B3 to B4) require precise, machine-checkable payload schemas to prevent miscommunication and regression.

Core Features & Use Cases

  • Enforces a strict B3→B4 payload contract according to the shared contracts schema.
  • Validates presence of required fields and data contracts, enabling reliable handoffs in modular architectures.
  • Use Case: When integrating a new Implementer, ensure the B3 payload is correct and consumable by B4 before deployment.

Quick Start

Use the B3→B4 payload contract to feed the Implementer and validate it against the shared/contracts.md schema.

Frequently Asked Questions about contract-engineering

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I validate a payload contract before an engineering handoff?▼

Payload contract validation is performed by checking the B3 producer payload against the shared/contracts.md schema to ensure required fields and data contracts are present for reliable B4 consumer handoffs.

Why does my B3 to B4 component handoff fail with missing data contracts?▼

B3 to B4 handoffs fail when the payload lacks required fields or does not conform to the strict shared/contracts.md schema, preventing the B4 consumer from correctly interpreting the data contract.

What is a B3 to B4 payload contract and when do I need it?▼

A B3 to B4 payload contract is a machine-checkable schema enforcing strict data validation between producer and consumer components, needed during modular architecture integration to prevent miscommunication and regression.

Can I use schema validation for BDD lifecycle flow in modular architectures?▼

Schema validation supports BDD lifecycle flow by verifying explicit data contracts and implementation validation, ensuring the B3 payload is correct and consumable by the B4 component before deployment.

How do I verify a producer payload is consumable by a consumer before deployment?▼

To verify a producer payload is consumable, feed the B3 payload to the Implementer and validate it against the shared/contracts.md schema to enforce strict contract verification before B4 deployment.

Related Skills

Explore More Software Engineering Skills→
qa-amanqa-aman
19

schema-spec

Document data schemas with headers, fields, types, and evolution rules.

Community
Advanced
jellydnjellydn
114

pickup

Resume work from saved handoff sessions in .claude/handoffs/.

Community
Basic
TrevorEdrisTrevorEdris
2

session-handoff

Generate structured handoff documents to preserve context between AI agent sessions.

Community
Advanced
gitgoodordietryinggitgoodordietrying
1

data-validation

Validate data structures and API payloads against JSON Schema, Zod, and Pydantic schemas.

Community
Advanced