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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758import { Tool } from "@opencode-ai/schema/tool"import type { Agent } from "@opencode-ai/schema/agent"import type { Session } from "@opencode-ai/schema/session"import type { SessionMessage } from "@opencode-ai/schema/session-message"import type { Effect, Types } from "effect"import type { Hooks, Transform } from "./registration.js"
export interface ToolDraft { list(): readonly (Tool.Info & { readonly id: string })[] get(id: string): (Tool.Info & { readonly id: string }) | undefined add<Input extends Tool.ValueSchema<any>, Output extends Tool.ValueSchema<any> | undefined>( tool: Tool.Info<Input, Output>, ): void /** Updates an existing tool; missing IDs are ignored. */ update(id: string, update: (tool: Types.Mutable<Tool.Info>) => void): void remove(id: string): void}
export interface ToolHooks { readonly "execute.before": { tool: string readonly sessionID: Session.ID readonly agent: Agent.ID readonly messageID: SessionMessage.ID readonly id: Tool.CallID input: unknown } readonly "execute.after": { readonly tool: string readonly sessionID: Session.ID readonly agent: Agent.ID readonly messageID: SessionMessage.ID readonly id: Tool.CallID readonly input: unknown } & ( | { readonly status: "completed" result: Tool.Result } | { readonly status: "error" error: Tool.Error } )}
// Only execute.before may fail: a Tool.Error rejects the call before the tool runs.export interface ToolFailures extends Record<keyof ToolHooks, unknown> { readonly "execute.before": Tool.Error readonly "execute.after": never}
export interface ToolDomain { readonly transform: Transform<ToolDraft> readonly reload: () => Effect.Effect<void> readonly hook: Hooks<ToolHooks, ToolFailures>}