# Glossary

| Term                                                                   | Meaning                                                                                                              |
| ---------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------- |
| [Organization](/docs/administration.md#organization)                   | Members, billing, and administration shared across environments.                                                     |
| [Environment](/docs/administration.md#environment)                     | An isolated scope with its own catalogs, credentials, compute allocation, and analyses.                              |
| [Catalog](/docs/lakehouse/catalogs.md)                                 | A namespace of schemas and tables. Managed catalogs store ingested data. External catalogs expose connected sources. |
| [Worker](/docs/lakehouse/compute/workers.md)                           | Compute that executes queries and caches data.                                                                       |
| [Bucket](/docs/lakehouse/storage/buckets.md)                           | Object storage for catalog files, separate from a scheduled file import.                                             |
| [Ask Altertable](/docs/agents/ask.md)                                  | The conversational agent. Some app controls call it **Ask Agent**.                                                   |
| [Ask Altertable in Slack](/docs/agents/ask.md#use-in-slack)            | The same agent accessed through the organization's Slack integration.                                                |
| [Cousteau](/docs/automation/cousteau.md)                               | Autonomous product investigations.                                                                                   |
| [Data app](/docs/data-apps.md)                                         | An interactive application built over your data. Use for new reporting.                                              |
| [Insight](/docs/data-apps/insights.md)                                 | A saved query or chart. Existing dashboards combine insights into layouts.                                           |
| [Lakehouse credentials](/docs/administration/lakehouse-credentials.md) | An environment's username and password for SQL and ingestion clients.                                                |
| [Product Analytics API key](/docs/product-analytics/authentication.md) | A key for Product Analytics event and identity ingestion.                                                            |
| [`altertable-mcp`](/docs/agents/mcp.md)                                | The default MCP server name in the agent plugin. A manually added connection can use another name.                   |

## MCP access names

Each access tier has a display name, a pinned endpoint, and an OAuth scope:

| Access                                         | Endpoint                                   | OAuth scope   |
| ---------------------------------------------- | ------------------------------------------ | ------------- |
| [Read-only](/docs/agents/mcp.md#pin-a-scope)   | `https://mcp.altertable.ai/mcp/read-only`  | `mcp:ro`      |
| [Analyst](/docs/agents/mcp.md#pin-a-scope)     | `https://mcp.altertable.ai/mcp/analyst`    | `mcp:analyst` |
| [Full access](/docs/agents/mcp.md#pin-a-scope) | `https://mcp.altertable.ai/mcp/read-write` | `mcp:rw`      |

Resource permissions still apply. Use the matching scope for a pinned endpoint. See [MCP setup](/docs/agents/mcp.md#pin-a-scope).