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    API Contract Guardian for AI Coding Agents

    by Shandra

    Protects API endpoints from accidental breaking changes by generating contract maps, validation rules, integration tests, documentation, and safe AI coding prompts.

    $9.99

    · or 50 credits

    30-day refund guarantee

    Secure checkout via Stripe

    About this skill

    API Contract Guardian helps AI coding agents, developers, QA teams, backend engineers, frontend engineers, integration teams, SaaS builders, and API maintainers protect API behavior before creating, modifying, documenting, or testing endpoints. It turns vague API requests into structured contract maps, consumer dependency reviews, breaking-change risk audits, request validation plans, response schema plans, error format standards, contract test strategies, OpenAPI-style documentation outlines, webhook verification plans, versioning plans, migration notes, and paste-ready prompts for Cursor, Claude Code, Codex CLI, OpenCode, Replit, and ChatGPT Agents. The skill is ideal for preventing frontend-backend drift, protecting mobile and SDK consumers, documenting undocumented endpoints, testing REST APIs, reviewing GraphQL changes, and safely modifying production API behavior.

    How to install

    Drop the file into your AI Agent. Works with Claude, Cursor, ChatGPT, and 20+ more.

    ai-coding
    api-design
    api-development
    backend-development
    backend-safety
    claude-code
    contract-testing
    devops

    Details

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    Security Scanned

    Passed automated security review

    Permissions

    Browser
    Terminal / Shell
    Write Files
    Read Files
    Network Access

    File Scopes

    *.md
    *.txt
    *.json
    *.yaml
    *.yml
    *.toml
    README.md
    openapi.*
    swagger.*
    src/**
    app/**
    server/**
    api/**
    routes/**
    controllers/**
    models/**
    schemas/**
    services/**
    clients/**
    types/**
    tests/**
    __tests__/**
    cypress/**
    playwright/**
    docs/**
    config/**
    package.json

    This skill uses file access to read user-provided endpoint notes, API documentation, OpenAPI or Swagger files, route definitions, schema examples, API clients, tests, webhook payloads, README files, and integration notes. It uses write access to create structured Markdown/text outputs such as API contract maps, breaking-change reviews, request validation plans, response schema plans, error contract plans, contract test plans, OpenAPI-style documentation outlines, webhook verification plans, migration notes, AI coding agent prompts, QA checklists, and SKILL.md files. Terminal access is optional and should only be enabled when the agent is expected to run tests, search a repository for API consumers, or validate endpoints locally. Browser or network access is only needed for external documentation or API reference research. Environment variable access is not normally required, and secret values should never be exposed.

    Creator

    Shandra

    Shandra is a top-ranked AI prompt creator and premium agent skill builder with an established track record in the AI marketplace. She is recognized as a #1 Top Seller on PromptBase, where she has built a trusted catalog of specialized AI prompts and agent skills for creators, entrepreneurs, educators, marketers, digital product sellers, and business professionals. With over 3,500 AI products published, more than 3,400 sales, and 1,000+ five-star reviews, Shandra has become known for creating practical, polished, and commercially useful AI resources that help users save time, organize complex ideas, generate high-quality content, build digital products, and transform creative concepts into actionable workflows. Her Agensi store focuses on premium, ready-to-use agent skills designed for real-world productivity. Each skill is developed with clear instructions, structured workflows, professional formatting, practical use cases, setup guidance, examples, edge-case handling, and a strong emphasis on usability. Her work combines creative strategy, prompt engineering, documentation design, business thinking, and practical automation into reliable tools that users can apply immediately. Shandra’s mission is to create AI skills that feel professional, useful, and complete from the first use — not generic templates, but carefully built workflow systems that help users think better, work faster, and produce stronger results.

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