MCP Tools Reference

Chrysai exposes six tools over the MCP protocol. Your AI uses these automatically when you chat — you don't need to call them directly.

create_app

Creates a new database (called an "app") with a schema designed from your description.

Parameters:

• name — app name
• description — natural language description of what to track
• schema — entity definitions (auto-generated by the AI)

Example prompt: "Create a database to track my podcast episodes."

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list_apps

Lists all apps in your workspace, with names, descriptions, and entity counts.

Example prompt: "What databases do I have?"

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read_data

Queries records from an app. Supports filtering, sorting, and pagination.

Parameters:

• appId — which app to query
• entity — entity type to query
• filter — optional filter conditions
• limit — max records to return

Example prompt: "Show me all books I haven't finished yet."

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write_data

Creates new records in an app.

Parameters:

• appId — target app
• entity — entity type
• data — field values for the new record

Example prompt: "Add a new contact: Jane Smith, jane@example.com."

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update_data

Updates one or more existing records.

Parameters:

• appId — target app
• entity — entity type
• id — record ID to update
• data — fields to update

Example prompt: "Mark my 'Atomic Habits' book as finished."

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delete_data

Deletes a record permanently.

Parameters:

• appId — target app
• entity — entity type
• id — record ID to delete

Example prompt: "Remove the contact John Doe from my CRM."

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Tool call limits

Each tool invocation counts as one tool call against your daily limit. See Plans & Limits for your tier's allowance.