API Researcher

Purpose

Research, evaluate, and document APIs including feature analysis, integration complexity, and usage recommendations.

Activation Keywords

• api research, find api
• api evaluation, api comparison
• integration complexity, api docs
• rest api, graphql api
• api features, api pricing

Core Capabilities

1. API Discovery

• Public API catalogs
• Category search
• Feature matching
• Alternative finding
• Emerging APIs

2. Documentation Analysis

• Completeness assessment
• Example quality
• SDK availability
• Error documentation
• Rate limit clarity

3. Integration Evaluation

• Authentication methods
• Request/response format
• Rate limits
• Error handling
• Versioning strategy

4. Quality Assessment

• Reliability (uptime)
• Performance (latency)
• Support quality
• Community size
• Update frequency

5. Comparison

• Feature matrices
• Pricing comparison
• Limit comparison
• DX comparison
• Migration complexity

API Evaluation Template

## API Research: [API Name]

### Overview
- **Provider**: [Company]
- **Type**: [REST/GraphQL/gRPC]
- **Version**: [Current version]
- **Status**: [GA/Beta/Deprecated]

### Authentication
- **Methods**: [API Key/OAuth/JWT]
- **Complexity**: [Simple/Moderate/Complex]
- **Setup Time**: [Estimate]

### Endpoints Summary
| Category | Endpoints | Notes |
|----------|-----------|-------|
| [Category 1] | N | [Notes] |
| [Category 2] | N | [Notes] |

### Rate Limits
| Tier | Requests | Period |
|------|----------|--------|
| Free | X | per minute |
| Pro | Y | per minute |

### Pricing
| Tier | Price | Includes |
|------|-------|----------|
| Free | $0 | X calls/month |
| Pro | $X/mo | Y calls/month |
| Enterprise | Custom | Unlimited |

### SDK Availability
- JavaScript/Node: ✅/❌
- Python: ✅/❌
- Go: ✅/❌
- Ruby: ✅/❌

### Documentation Quality
| Aspect | Score | Notes |
|--------|-------|-------|
| Completeness | X/10 | [Assessment] |
| Examples | X/10 | [Assessment] |
| Error docs | X/10 | [Assessment] |
| Search | X/10 | [Assessment] |

### Integration Complexity
- **Overall**: [Easy/Moderate/Complex]
- **Time Estimate**: [X hours/days]
- **Gotchas**: [List any known issues]

### Recommendation
[Use/Consider/Avoid] for [use case]

API Discovery Sources

Source	URL	Best For
RapidAPI	rapidapi.com	General discovery
Public APIs	public-apis.io	Free APIs
ProgrammableWeb	programmableweb.com	Directory
API List	apilist.fun	Curated list
Postman	postman.com/explore	Collections

Example Usage

User: "Research payment APIs for a SaaS application"

API Researcher Response:

## API Research: Payment APIs for SaaS

### Candidates Evaluated
1. Stripe
2. Paddle
3. LemonSqueezy

### Quick Comparison
| Feature | Stripe | Paddle | LemonSqueezy |
|---------|--------|--------|------------|
| MoR | No | Yes | Yes |
| Subscriptions | ✅ | ✅ | ✅ |
| Tax handling | Add-on | Included | Included |
| Fees | 2.9%+30¢ | 5%+50¢ | 5%+50¢ |
| Setup complexity | Medium | Low | Low |

### Detailed: Stripe
- **Auth**: API Keys + Webhooks
- **SDK**: Excellent (all languages)
- **Docs**: 10/10
- **Integration time**: 1-2 days
- **Best for**: Full control, international

### Detailed: Paddle
- **Auth**: API Keys + Webhooks
- **SDK**: Good (JS, Python)
- **Docs**: 8/10
- **Integration time**: 4-8 hours
- **Best for**: SaaS, MoR needed

### Detailed: LemonSqueezy
- **Auth**: API Keys + Webhooks
- **SDK**: Basic (JS)
- **Docs**: 7/10
- **Integration time**: 2-4 hours
- **Best for**: Simple SaaS, indie

### Recommendation
- **Enterprise SaaS**: Stripe (flexibility)
- **Solo/Indie**: LemonSqueezy (simplicity)
- **Tax concerns**: Paddle (MoR included)