MemberSpace

36
Fair
Agent Native Score
Free TierAPI Key Auth

MemberSpace is a membership platform that enables creators and businesses to gate content, manage subscriptions, and build community without coding. It integrates with websites, Stripe for payments, and provides tools for user authentication and content protection.

Categories: Memberships · Authentication · Payments
#17 of 18 in Authentication · #36 of 72 in Payments
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

MemberSpace lacks critical agent discovery infrastructure—no MCP server, OpenAPI spec, or llms.txt documentation. API documentation exists but is sparse and developer-focused, making programmatic discovery difficult. Account creation requires human interaction (email verification, UI-based setup), preventing autonomous agent onboarding. The API supports basic operations (member management, subscription queries) but lacks comprehensive endpoint coverage and structured error responses. Reliability appears moderate with standard rate limiting, though uptime SLAs are not publicly documented. The free tier enables initial experimentation, but agent autonomous operation would require paid plans with unclear usage-based pricing. Strongest for: backend integration by humans. Weakest for: autonomous agent discovery and signup.

Top 10 Lists
Top 10 Authentication → Top 10 Payments →

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claude mcp add --transport http agent-native-registry https://agentnativeregistry.com/api/mcp