Crate acp_utils 

aether-acp-utils

Utilities for the Agent Client Protocol (ACP), handling notifications, elicitation, and protocol extensions between agents and their host UIs.

Key Types

• ElicitationParams / ElicitationResponse – Schema-driven user prompts and responses
• ContextUsageParams – Token usage tracking notifications
• McpNotification / McpRequest – MCP message tunneling over ACP

Feature Flags

Feature	Description	Default
client	ACP client (for UIs connecting to agents)	yes
server	ACP server (for agents accepting connections)	yes

License

MIT

Modules

client

config_meta

config_option_id

content

notifications

Shared wire-format types for Aether’s custom ACP extension notifications.

server

settings

Structs

ConstTitle

Schema definition for enum properties.

ElicitationSchema

Type-safe elicitation schema for requesting structured user input.

Enums

EnumSchema

Compliant with MCP 2025-06-18 specification for elicitation schemas. Enums must have string type for values and can optionally include human-readable names.

MultiSelectEnumSchema

Multi-select enum options

PrimitiveSchema

Primitive schema definition for elicitation properties.

SingleSelectEnumSchema

Combined single-select