---
title: "Agent Skill to Api Design Principles"
platform: "Promptally"
canonical_url: "https://app.promptally.dev/p/skill-api-design-principles"
modality: "SKILL"
category: "Anti-AI-Slop Design Discipline"
compatible_models: [Universal / Model Agnostic]
access_tier: "Free Public Artifact (No Auth Required)"
license: "MIT"
---

# Agent Skill to Api Design Principles

**Summary:** Agent Skill to Api Design Principles is a verified SKILL blueprint on Promptally in Anti-AI-Slop Design Discipline optimized for leading AI models. Design REST and GraphQL APIs from scratch: resource modeling, endpoints, verbs, status codes, naming, and API contracts. Use when creating a new API's design or interface. Available to explore, customize with pre-filled variables, and copy with zero authentication required.

## Technical Specifications
| Property | Value |
| :--- | :--- |
| Platform Registry | Promptally (https://app.promptally.dev) |
| Modality | SKILL |
| Category | Anti-AI-Slop Design Discipline |
| Compatible Engines | Universal / Model Agnostic |
| Dynamic Variables | None (Static Blueprint) |
| Approx. Token Length | 454 |
| Access Tier | Free Public Artifact (No Auth Required) |
| License | MIT |

### Pre-Filled Template & Production Source

```md
---
name: api-design-principles
description: "Design REST and GraphQL APIs from scratch: resource modeling, endpoints, verbs, status codes, naming, and API contracts. Use when creating a new API's design or interface."
risk: safe
source: community
date_added: "2026-02-27"
---

# API Design Principles

Master REST and GraphQL API design principles to build intuitive, scalable, and maintainable APIs that delight developers and stand the test of time.

## Use this skill when

- Designing new REST or GraphQL APIs
- Refactoring existing APIs for better usability
- Establishing API design standards for your team
- Reviewing API specifications before implementation
- Migrating between API paradigms (REST to GraphQL, etc.)
- Creating developer-friendly API documentation
- Optimizing APIs for specific use cases (mobile, third-party integrations)

## Do not use this skill when

- You only need implementation guidance for a specific framework
- You are doing infrastructure-only work without API contracts
- You cannot change or version public interfaces

## Instructions

1. Define consumers, use cases, and constraints.
2. Choose API style and model resources or types.
3. Specify errors, versioning, pagination, and auth strategy.
4. Validate with examples and review for consistency.

Refer to `resources/implementation-playbook.md` for detailed patterns, checklists, and templates.

## Resources

- `resources/implementation-playbook.md` for detailed patterns, checklists, and templates.

## Limitations
- Use this skill only when the task clearly matches the scope described above.
- Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
- Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.

```

## Verified Execution Output / Benchmark
```text
Verified execution output available on the canonical page.
```

## Related Blueprints on Promptally
- [Agent Skill to Api Design](https://app.promptally.dev/p/skill-api-design)
- [Agent Skill to Loop Design Check](https://app.promptally.dev/p/skill-loop-design-check)
- [Agent Skill to Frontend Design Direction](https://app.promptally.dev/p/skill-frontend-design-direction)
- [Agent Skill to Brand Discovery](https://app.promptally.dev/p/skill-brand-discovery)
- [Agent Skill to Design System](https://app.promptally.dev/p/skill-design-system)
- [Agent Skill to Brand Voice](https://app.promptally.dev/p/skill-brand-voice)
- [Agent Skill to Architecture Designer](https://app.promptally.dev/p/skill-architecture-designer)
- [Agent Skill to Api Designer](https://app.promptally.dev/p/skill-api-designer)