# Specter

> The observability layer for the physical world

- [Specter API: Query Sites, Sensors, Workflows, and Alerts](https://api.specter.co/api-reference/introduction.md): Overview of the Specter REST/JSON API: what you can query, how requests are structured, and how cursor-based pagination works across list endpoints.
- [Authenticate Specter API Requests with Bearer Keys](https://api.specter.co/api-reference/authentication.md): Learn how Specter API keys work, how to send them as bearer tokens, which permissions each endpoint needs, and how organization quotas are shared.
- [Specter API Error Codes, Rate Limits, and Retry Guidance](https://api.specter.co/api-reference/errors.md): Reference for Specter API error responses: HTTP status codes, error code values, Retry-After behavior, and when to retry a failed request safely.

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- [Documentation](https://mintlify.com/docs)
- [Blog](https://mintlify.com/blog)


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