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GET
What the platform accepts in a template

Authorizations

Authorization
string
header
required

LithoBlocks API key obtained from your organization dashboard. The LithoBlocks MCP server also presents a Supabase-issued user session token here on the user's behalf; such a token acts as that user with the scopes their organization role allows.

Response

Block schema

block_types
object[]
required
directives
object
required
placeholders
object
required
limits
object
required

Character and count limits, snake_case, as the engine enforces them

ids
object
required
interactivity
object
required

What a button's action_config may say, where each message-update strategy applies, the payload variables, and the metadata size ceiling