OpenMeter

Fair

Agent Native Score

Free TierAPI Key AuthOpenAPI Spec

OpenMeter is an open-source usage metering and analytics platform that tracks API consumption and usage events for billing and monitoring purposes. It provides real-time usage tracking, aggregation, and flexible meter definitions for SaaS and API platforms.

Categories: Billing · Analytics · Metering

#12 of 26 in Billing · #35 of 117 in Analytics · #4 of 5 in Metering

Checklist Breakdown

13 of 33 checks passed. 14 unscored.

Discovery 63%

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

OpenMeter has a clear OpenAPI specification and self-hosted/SaaS deployment options with sandbox access, which are strengths for agent integration. However, it lacks an MCP server and llms.txt file, making discovery harder. Account creation requires human intervention through web signup with no programmatic onboarding flow. The API tooling is solid with structured event/usage responses, but the platform is primarily designed for backend metering rather than direct agent consumption. Being open-source and offering a free tier helps autonomous operations, but the lack of automated account provisioning limits true agent-native workflow.

OpenMeter

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