Files
deepseek-harness/packages/subagent/tool-subagent-control/src/index.ts
T

77 lines
2.7 KiB
TypeScript

/**
* The globally named `send_message` tool: a thin model-facing adapter over
* `ctx.subagents.followup()`. It performs no lifecycle routing of its own —
* residency and cold resume belong to the subagent service — and it lives apart
* from the provider-bound `@deepseek-ai/dsh-tool-subagent` instances so multiple
* delegation tools share one control tool.
* @module @deepseek-ai/dsh-tool-subagent-control
*/
import type { Context } from 'cordis'
import { defineTool } from '@deepseek-ai/dsh-tools'
import type { ContentBlock } from '@deepseek-ai/dsh-llm'
import { SessionId } from '@deepseek-ai/dsh-session'
import type {} from '@deepseek-ai/dsh-subagent'
export const name = 'tool-subagent-control'
export const inject = ['tools', 'subagents']
/**
* Register the `send_message` tool.
* @param ctx - context carrying the tool registry and subagent service.
*/
export function apply(ctx: Context): void {
ctx.tools.register(defineTool({
name: 'send_message',
description:
'Send a message to a background subagent by its subagent id, continuing the same conversation. It '
+ 'becomes the subagent\'s next turn: if it is still working, the message waits until its current turn '
+ 'finishes, so it cannot redirect work already underway. This call returns no answer from the '
+ 'subagent — only confirmation that the message was delivered — so use it to give it more work. A '
+ 'failure means the message was NOT delivered.',
parameters: {
subagent_id: {
type: 'string',
required: true,
description: 'The subagent id returned when the background subagent was started.',
},
message: {
type: 'string',
required: true,
description: 'The message to deliver to the subagent.',
},
},
output: {
schema: {
type: 'object',
additionalProperties: false,
properties: {
messageId: { type: 'string', required: true },
},
},
render: (args, _value) => [{
type: 'text',
text: `message queued as the next turn for subagent ${args.subagent_id}`,
}],
},
async execute(args, exec) {
const parent = exec.agent
if (!parent) {
// Parent authority requires an exact live calling agent.
throw new Error('send_message requires a calling agent (exec.agent was undefined)')
}
const message: ContentBlock[] = [{ type: 'text', text: args.message }]
const messageId = await ctx.subagents.followup(
parent,
SessionId(args.subagent_id),
message,
{
source: { kind: 'coordinator', senderSessionId: parent.id },
signal: exec.signal,
},
)
return { messageId }
},
}))
}