Annotations §

Fields

field
required
type
description
readOnlyHint
required
boolean
destructiveHint
required
boolean
idempotentHint
required
boolean
openWorldHint
required
boolean
class
optional
string

Optional discriminator; when present, must be 'Annotations'.

Tool §

CWL hint describing an MCP tool's callable name, display title, behavioral annotations, and selection guidance. Input and output schemas are derived separately from the CWL process parameters.

Fields

field
required
type
description
class
required
string

Always 'Tool'

name
required
string

Canonical callable name. This profile enforces MCP naming recommendations.

aliases
required
array<string>

Discovery synonyms only; does not register additional callable names.

useWhen
required
string

Conditions under which this tool should be selected.

doNotUseWhen
required
string

Conditions under which this tool should NOT be selected.

annotations
required
Annotations
title
optional
string

Human-readable display name overriding the CWL process label.