Silo

Interface: AgentToolCallContent ​

Defined in: packages/sdk/src/agents-service.ts:619

Beta

One block of a tool call's content — what the agent wants shown inside the tool row. The protocol wraps each in a { type } envelope, and the three it names are "content" (an AgentContentBlock), "diff" (a file edit) and "terminal" (output streaming into an agent-side terminal).

type is a string for the usual reason: tolerate what you do not know. The remaining fields are the union's arms flattened, so check type before reading them.

Properties ​

type ​

ts
readonly type: string;

Defined in: packages/sdk/src/agents-service.ts:621

Beta

"content", "diff", "terminal", or a vendor's own.

content? ​

ts
readonly optional content?: AgentContentBlock;

Defined in: packages/sdk/src/agents-service.ts:623

Beta

The content block, when type is "content".

path? ​

ts
readonly optional path?: string;

Defined in: packages/sdk/src/agents-service.ts:625

Beta

The file being edited, when type is "diff".

oldText? ​

ts
readonly optional oldText?: string;

Defined in: packages/sdk/src/agents-service.ts:629

Beta

The file's contents before the edit, when type is "diff". Absent for a file the agent is creating — claude-agent-acp 0.75.1 sends null there, which arrives here as undefined.

newText? ​

ts
readonly optional newText?: string;

Defined in: packages/sdk/src/agents-service.ts:631

Beta

The file's contents after the edit, when type is "diff".

terminalId? ​

ts
readonly optional terminalId?: string;

Defined in: packages/sdk/src/agents-service.ts:635

Beta

The agent-side terminal this call is streaming into, when type is "terminal". Silo declines terminal/* today, so a consumer can name the block but cannot read its output.