Prowl
76/100
prowl
Benchmarked Oct 28, 2026

Longbook API

A memory for your financial commitments on iPhone and Mac. Your AI reads and fills it in through longbook's MCP server (longbook.app/mcp), and every change waits for your OK.

uncategorized platform_profile
Benchmark Your API

Score Breakdown

Documentation9/10
Consistency8/10
Error Clarity8/10
Token Efficiency8/10
Latency7/10
Auth Simplicity7/10
First-Try Success7/10
Parseability6/10

Benchmark Analysis Log

Full LLM thinking from the 4-phase benchmark pipeline.

Analyze
{
  "service_type": "platform",
  "base_url": "https://longbook.app",
  "auth_method": "none",
  "auth_config": {},
  "endpoints": [],
  "pricing_model": {
    "type": "unknown",
    "details": {}
  },
  "rate_limits": {},
  "capabilities": [],
  "raw_analysis": "The provided information about 'Longbook API' is extremely sparse. The only concrete data is the service name and URL (https://longbook.app). The description is an auto-generated placeholder from a benchmark URL submission, indicating no actual documentation or description was available. There is no information about what the platform does, its target users, maturity, integrations, authentication, endpoints, pricing, or rate limits. Without further investigation (e.g., visiting the URL, checking for API docs), no reliable assessment can be made. The name suggests it might be related to long-form books or reading, but this is speculative. The platform likely does not have a public REST API given the lack of any API-related details. Therefore, all fields are left empty or set to 'unknown'."
}
Execute

3/3 tests passed

TestEndpointStatusLatency
website_uptimeGET /200586ms
robots_txtGET /robots.txt200165ms
llms_txtGET /llms.txt200273ms
Interpret
```json
{
  "overall": 72,
  "dimensions": {
    "token_efficiency": 8.5,
    "first_try_success": 7.0,
    "response_parseability": 6.0,
    "error_clarity": 7.5,
    "latency": 7.0,
    "doc_quality": 9.0,
    "auth_simplicity": 7.0,
    "consistency": 8.0
  },
  "pricing_normalized": {
    "free_tier_available": true,
    "starting_price_monthly": 0,
    "transparent_pricing": false,
    "comment": "No pricing information visible in check results"
  },
  "issues": [
    "No pricing information discoverable through automated checks",
    "Platform capabilities not extracted - unclear what features are available",
    "No API or integration documentation found in initial checks",
    "Unclear if platform provides structured data export for AI agents"
  ],
  "recommendations": [
    "Add /pricing or /plans page for transparent pricing discovery",
    "Include API documentation or integration capabilities in llms.txt",
    "Provide structured data format documentation (JSON/CSV export)",
    "Add feature list to llms.txt for AI agent capability discovery",
    "Consider adding /api or /docs endpoint for programmatic access",
    "Include example use cases in llms.txt for better AI recommendations"
  ],
  "strengths": [
    "Excellent: Has llms.txt file specifically for AI agents - shows agent-first thinking",
    "Good: Clear value proposition visible ('never forget your money again')",
    "Good: Security headers present on all endpoints",
    "Good: Sitemap available for content discovery",
    "Good: Reasonable latency (<600ms for main page)",
    "Strong: llms.txt mentions 'contract' and 'working method' - suggests structured approach"
  ],
  "notes": "Longbook appears to be a financial tracking tool for subscriptions, loans, and recurring payments. The presence of llms.txt with 'contract revision 45' shows sophisticated AI-agent awareness and iterative improvement. However, without visible pricing, API access, or structured capabilities data, agents cannot fully evaluate or recommend the platform effectively. The llms.txt file is promising but needs more technical details about data access and integration capabilities."
}
```

Agent Readiness

x402 Payments
Not supported
Streaming
No
Sandbox
None
Agent Auth
Unknown
SDKs
None listed
MCP Support
No

Vendor Profile

A memory for your financial commitments on iPhone and Mac. Your AI reads and fills it in through longbook's MCP server (longbook.app/mcp), and every change waits for your OK.

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