KeystoneJS

Fair

Agent Native Score

Free TierAPI Key Auth

KeystoneJS is a headless CMS and GraphQL API framework built on Node.js that allows developers to create content management systems and data APIs with minimal configuration. It provides a powerful admin interface and extensible data modeling system for building backend services.

Categories: Cms · Api · Backend

#17 of 21 in Cms · #29 of 30 in Api · #20 of 24 in Backend

Checklist Breakdown

12 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 50%

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

KeystoneJS is a developer framework rather than a third-party API service, so traditional agent integration patterns don't apply well. Strengths: excellent GraphQL documentation and open-source codebase make the API discoverable, and it supports authentication via API keys/JWT. Weaknesses: no MCP server, no OpenAPI spec, and agents cannot autonomously provision instances or accounts—KeystoneJS is self-hosted infrastructure requiring manual setup. Best suited for agents operating within an organization's existing Keystone deployment rather than discovering and using the tool independently.

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