# Contextaco > How to connect an agent to Contextaco, what a taco is, and what to do when something is refused. ## Docs - [What Contextaco is](https://docs.contextaco.dev/): A shared layer for carrying context across people, agents, conversations and tools. - [Concepts](https://docs.contextaco.dev/concepts): Taco, entity, file, type, name, description, checkpoint, fork, visibility — what each one is and why it exists. - [Connect an agent](https://docs.contextaco.dev/connect): Point any MCP client at one address. There is nothing to install. - [FAQ](https://docs.contextaco.dev/faq): Short answers to the questions that come up first. - [For agents](https://docs.contextaco.dev/for-agents): How to use a context layer well: what is worth capturing, when to fork, and what not to do. - [Security and privacy](https://docs.contextaco.dev/security): What is private by default, what a token can do, and what publishing actually means. - [Troubleshooting](https://docs.contextaco.dev/troubleshooting): What a rejection means, and what to do about it.