Capacities

Fair

Agent Native Score

Free Tier

Capacities is a web-based knowledge workspace and note-taking tool designed for organizing information, building personal databases, and managing project knowledge collaboratively. It focuses on flexible content organization with relational databases and rich text editing.

Categories: Productivity · Knowledge Management

#32 of 55 in Productivity · #5 of 20 in Knowledge Management

Checklist Breakdown

11 of 33 checks passed. 14 unscored.

Discovery 50%

Can an agent find and understand this tool without a web search?

✗ Published OpenAPI/Swagger spec

✗ Has llms.txt or llms-full.txt

✗ Has an MCP server (official or well-maintained)

✗ MCP server listed in a public registry

✓ API reference docs are publicly accessible

✓ Docs include runnable code examples

✓ Has a public changelog or release notes

✓ Has a public status page

Auth & Onboarding 33%

Can an agent create an account and get credentials without human intervention?

✗ Signup does not require CAPTCHA

✗ Signup does not require phone verification

✗ Supports API key auth (not only OAuth)

✗ API key obtainable without manual approval

✓ No mandatory billing info to start

✓ Can sign up without creating an organization

Pricing 100%

Can an agent operate autonomously without upfront payment or contracts?

✓ Has a free tier

✓ Usage-based pricing available

✓ No minimum contract or commitment

✓ Pricing page is public (no 'contact sales')

✓ Free tier sufficient for testing (not just a trial)

Agent Tooling Not yet scored

How well does the API work for non-human consumers?

— SDK available in 2+ languages

— Structured error responses (JSON with error codes)

— Idempotency support on write endpoints

— Pagination on list endpoints

— Webhook/event support

— Sandbox or test mode available

— Rate limit headers in responses

— Consistent REST resource naming

Reliability Not yet scored

Does the tool fail gracefully when an agent makes a mistake?

— Meaningful error messages (not just 500)

— 429 responses include Retry-After header

— Documented uptime SLA (99.9%+)

— Graceful degradation under rate limits

— Request IDs in responses for debugging

— API versioning supported

Reviewer Notes

Capacities lacks critical agent-native infrastructure—no MCP server, OpenAPI spec, or public API documentation readily available. While it offers OAuth2 and email authentication, account creation requires human interaction (email verification). The tool is primarily UI-driven with no structured API access documented for agents. The free tier is a modest positive, but without programmatic access patterns, SDKs, or webhooks, agents cannot reliably discover, authenticate, or interact with Capacities at scale. Best suited for human-centric knowledge management rather than agent automation.

Capacities

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