# Motley > Motley builds a governed semantic layer for AI agents and business intelligence. Its open-core product, SLayer (motley-slayer), lets teams model measures, dimensions, and filters once, then have agents and apps generate and run correct SQL across Postgres, MySQL, Snowflake, BigQuery, ClickHouse, and DuckDB — over MCP, REST, CLI, a Python client, Apache Arrow Flight SQL, and a Postgres facade. Motley Cloud adds hosting, OAuth access control, row-level security, versioning, and governed reporting. Zurich-based; backed by Seedcamp. This llms.txt was generated by the API Evangelist enrichment pipeline from the provider's public developer surface. ## APIs - [Motley SLayer Semantic Layer](https://docs.motley.ai/slayer/): Model measures/dimensions/filters once; agents query semantically and SLayer compiles + runs the SQL. Base URL https://app.motley.ai/api/v1/ (Motley Cloud). ## Docs - [Developer docs](https://docs.motley.ai/): Motley documentation home. - [SLayer getting started](https://docs.motley.ai/slayer/getting-started/): MCP, CLI, REST API, Python quickstarts. - [MCP reference](https://docs.motley.ai/slayer/reference/mcp/): SLayer MCP tools and transports. - [CLI reference](https://docs.motley.ai/slayer/reference/cli/): The `slayer` command surface. - [REST API](https://docs.motley.ai/slayer/getting-started/rest-api): SLayer HTTP API. - [Blog](https://motley.ai/blog) - [Pricing](https://motley.ai/pricing) - [Security](https://motley.ai/security) ## Interfaces - MCP (hosted): https://app.motley.ai/api/v1/mcp - MCP (local stdio): `uvx --from 'motley-slayer[postgres]' slayer mcp --ingest-on-startup` - Python / CLI: `pip install motley-slayer` (PyPI) — ships the `slayer` CLI, REST server, and MCP server. - Source: https://github.com/MotleyAI/slayer ## Auth - [OAuth 2.0 Authorization Server Metadata](https://app.motley.ai/.well-known/oauth-authorization-server): RFC 8414, Clerk-backed, authorization-code + PKCE, OIDC. ## Artifacts - Packages/SDKs: packages/motley-packages.yml - MCP server: mcp/motley-mcp.yml - Agent Skills: skills/_index.yml - CLI: cli/motley-cli.yml - Changelog: changelog/motley-changelog.yml - Authentication: authentication/motley-authentication.yml - OAuth scopes: scopes/motley-scopes.yml - Conventions: conventions/motley-conventions.yml - Conformance: conformance/motley-conformance.yml - Sandbox/demo: sandbox/motley-sandbox.yml - Well-known: well-known/motley-well-known.yml