# LexQ Docs

## Docs

- [Authentication](https://docs.lexq.io/api/authentication.md): Authenticate your API requests using API keys.
- [Errors](https://docs.lexq.io/api/errors.md): Complete error code reference for the LexQ API. Codes are stable across versions; HTTP status and message text may evolve.
- [Policy Execution](https://docs.lexq.io/api/execution.md): Execute deployed policies against input facts in real time. LexQ provides 4 execution modes for different use cases.
- [API Overview](https://docs.lexq.io/api/introduction.md): Integrate LexQ policy execution into your application via REST API.
- [Command Reference](https://docs.lexq.io/cli/commands.md): Complete reference for the LexQ CLI.
- [Installation & Authentication](https://docs.lexq.io/cli/installation.md): Install the LexQ CLI and set up your API key.
- [CLI Overview](https://docs.lexq.io/cli/introduction.md): Command-line interface for the LexQ Decision Operations Platform. Manage policies, run Impact Simulation, and deploy from your terminal. Built for humans and AI agents.
- [MCP Server](https://docs.lexq.io/cli/mcp-server.md): Connect Claude, VS Code, Cursor, and other AI tools to LexQ via MCP.
- [Domain Templates](https://docs.lexq.io/domain-templates.md): Jump-start with curated fact catalogs and sample rules for your industry. Apply a template to create a ready-to-publish policy group in seconds.
- [Glossary](https://docs.lexq.io/glossary.md): Official terminology used across LexQ documentation, console, and API.
- [A/B Testing](https://docs.lexq.io/guides/ab-testing.md): Split production traffic between two policy versions to compare their performance.
- [Deployments](https://docs.lexq.io/guides/deployments.md): Push published versions to production, roll back if needed, and manage the deployment lifecycle.
- [Dry Run](https://docs.lexq.io/guides/dry-run.md): Test a single input against a policy version without side effects. Validate rule behavior before publishing.
- [Fact Definitions](https://docs.lexq.io/guides/fact-definitions.md): Facts are the input variables your rules evaluate against. Define, type, and manage them here.
- [Integrations](https://docs.lexq.io/guides/integrations.md): Connect LexQ to external services for coupon issuance, point systems, notifications, and webhooks.
- [Policy Groups](https://docs.lexq.io/guides/policy-groups.md): A policy group is the top-level container for your business rules. Learn how to create, manage, and configure groups.
- [Policy Rules](https://docs.lexq.io/guides/policy-rules.md): Rules define the if-then logic of your policies. Learn condition syntax, action types, conflict resolution, and decision trace.
- [Policy Versions](https://docs.lexq.io/guides/policy-versions.md): Versions represent snapshots of your rules. Understand the version lifecycle from draft to deployment.
- [Impact Simulation](https://docs.lexq.io/guides/simulation.md): Run a policy version against historical execution data to measure impact before deploying.
- [FAQ](https://docs.lexq.io/help/faq.md): Frequently asked questions about LexQ.
- [Support](https://docs.lexq.io/help/support.md): Get help from the LexQ team.
- [Troubleshooting](https://docs.lexq.io/help/troubleshooting.md): Common issues and how to resolve them.
- [Introduction](https://docs.lexq.io/introduction.md): LexQ is the Decision Operations Platform for engineering teams. Test rule changes on real production traffic with Impact Simulation, understand every decision with full trace, and deploy with confidence — no more blind changes to business logic.
- [Quickstart](https://docs.lexq.io/quickstart.md): Get your first policy running in under 5 minutes.

## OpenAPI Specs

- [openapi](https://docs.lexq.io/api-reference/openapi.json)