# Calyptia > Calyptia builds Calyptia Cloud (Telemetry Pipeline) and Calyptia Core — a management > plane for Fluent Bit, the open-source telemetry agent for logs, metrics and traces. > Calyptia was acquired by Chronosphere in 2024; calyptia.com now redirects to > chronosphere.io, but the Calyptia Cloud API (cloud-api.calyptia.com), its API > reference, status page and CLI remain live and actively released. ## API - [Calyptia Cloud API (OpenAPI 3.0.4)](openapi/calyptia-cloud-openapi-original.yml): 183 operations across projects, tokens, core instances (aggregators), pipelines, fleets, agents, processing rules, trace sessions and metrics. Base URL https://cloud-api.calyptia.com. - [API Reference](https://docs.calyptia.com/docs/calyptia-cloud-api/api-reference) ## Auth - Project API token via `X-Project-Token` header (from core.calyptia.com / project Settings) - User JWT bearer token - OAuth2 (Auth0, sso.calyptia.com): clientCredentials + authorizationCode - [Authentication profile](authentication/calyptia-authentication.yml) - [OAuth / OIDC scopes](scopes/calyptia-scopes.yml) ## Conventions - [API conventions](conventions/calyptia-conventions.yml): cursor pagination (last + before/after -> endCursor), `{ "error": ... }` envelope, no idempotency keys - [Error catalog](errors/calyptia-problem-types.yml) - [Data model / ERD](data-model/calyptia-data-model.yml) - [Conformance](conformance/calyptia-conformance.yml) ## Tooling - [Packages / SDKs](packages/calyptia-packages.yml): Go client `github.com/calyptia/api`, Go CLI `github.com/calyptia/cli`, npm `@calyptia/fluent-bit-config-parser` - [CLI](cli/calyptia-cli.yml): the `calyptia` binary (brew tap calyptia/tap) - [MCP (candidate)](mcp/calyptia-mcp.yml) - [Agent Skills](skills/_index.yml) ## Operations - [Lifecycle](lifecycle/calyptia-lifecycle.yml) — status https://status.calyptia.com/ - [Changelog](changelog/calyptia-changelog.yml) - [Well-known discovery](well-known/calyptia-well-known.yml) ## Docs - [Developer docs](https://docs.calyptia.com/docs/calyptia-cloud-api) - [Pipeline CLI docs](https://docs.chronosphere.io/pipeline-cli) - [GitHub org](https://github.com/chronosphereio)