# Semantil Developers

> Company discovery, domain enrichment, lookalikes, and market intelligence for people and agents.

## Documentation

- [Agents and LLMs](https://docs.semantil.com/agents.md): Give coding agents current, structured Semantil documentation.
- [Authentication](https://docs.semantil.com/authentication.md): Authenticate with one API key per integration.
- [Usage and credits](https://docs.semantil.com/credits.md): Read current usage information from Semantil and cap API requests safely.
- [Errors](https://docs.semantil.com/errors.md): Handle stable problem codes and retry safely.
- [API examples](https://docs.semantil.com/examples.md): Copy practical requests for domain enrichment, company search, lookalikes, and market analysis.
- [Quickstart](https://docs.semantil.com/index.md): Get a first Semantil result through the browser or REST API.

## API contract

- [OpenAPI contract](https://docs.semantil.com/openapi.yaml): Complete public API contract.
- [Interactive API reference](https://docs.semantil.com/api-reference): Browser-based Scalar reference and request builder.