Tool annotations - Seamless

Every tool in tools/list declares all four MCP tool annotations so agents and humans can reason about side effects before a call runs.

Hint	`true` means
`readOnlyHint`	Does not modify user data
`destructiveHint`	May overwrite, remove, or send (not additive-only)
`idempotentHint`	Repeating the call with the same arguments has no further effect
`openWorldHint`	Reaches outside Seamless (for example, sends email)

Recommended client settings

Enable human confirmation for tools with readOnlyHint: false in your MCP client, especially those with destructiveHint: true. Read-only tools change nothing in your account, but search_contacts and search_companies still consume credits, so budget for them before running them autonomously.

Destructive tools can overwrite, delete, or send data in ways that cannot be undone. Require explicit approval before calling them.

Tool reference

Each tool domain page lists every tool’s hints. See Access control for which domains your account can use.