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fb4d8fe | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 | import { Type } from "@sinclair/typebox";
import crypto from "node:crypto";
import type { GatewayMessageChannel } from "../../utils/message-channel.js";
import type { AnyAgentTool } from "./common.js";
import { formatThinkingLevels, normalizeThinkLevel } from "../../auto-reply/thinking.js";
import { loadConfig } from "../../config/config.js";
import { callGateway } from "../../gateway/call.js";
import {
isSubagentSessionKey,
normalizeAgentId,
parseAgentSessionKey,
} from "../../routing/session-key.js";
import { normalizeDeliveryContext } from "../../utils/delivery-context.js";
import { resolveAgentConfig } from "../agent-scope.js";
import { AGENT_LANE_SUBAGENT } from "../lanes.js";
import { optionalStringEnum } from "../schema/typebox.js";
import { buildSubagentSystemPrompt } from "../subagent-announce.js";
import { registerSubagentRun } from "../subagent-registry.js";
import { jsonResult, readStringParam } from "./common.js";
import {
resolveDisplaySessionKey,
resolveInternalSessionKey,
resolveMainSessionAlias,
} from "./sessions-helpers.js";
const SessionsSpawnToolSchema = Type.Object({
task: Type.String(),
label: Type.Optional(Type.String()),
agentId: Type.Optional(Type.String()),
model: Type.Optional(Type.String()),
thinking: Type.Optional(Type.String()),
runTimeoutSeconds: Type.Optional(Type.Number({ minimum: 0 })),
// Back-compat alias. Prefer runTimeoutSeconds.
timeoutSeconds: Type.Optional(Type.Number({ minimum: 0 })),
cleanup: optionalStringEnum(["delete", "keep"] as const),
});
function splitModelRef(ref?: string) {
if (!ref) {
return { provider: undefined, model: undefined };
}
const trimmed = ref.trim();
if (!trimmed) {
return { provider: undefined, model: undefined };
}
const [provider, model] = trimmed.split("/", 2);
if (model) {
return { provider, model };
}
return { provider: undefined, model: trimmed };
}
function normalizeModelSelection(value: unknown): string | undefined {
if (typeof value === "string") {
const trimmed = value.trim();
return trimmed || undefined;
}
if (!value || typeof value !== "object") {
return undefined;
}
const primary = (value as { primary?: unknown }).primary;
if (typeof primary === "string" && primary.trim()) {
return primary.trim();
}
return undefined;
}
export function createSessionsSpawnTool(opts?: {
agentSessionKey?: string;
agentChannel?: GatewayMessageChannel;
agentAccountId?: string;
agentTo?: string;
agentThreadId?: string | number;
agentGroupId?: string | null;
agentGroupChannel?: string | null;
agentGroupSpace?: string | null;
sandboxed?: boolean;
/** Explicit agent ID override for cron/hook sessions where session key parsing may not work. */
requesterAgentIdOverride?: string;
}): AnyAgentTool {
return {
label: "Sessions",
name: "sessions_spawn",
description:
"Spawn a background sub-agent run in an isolated session and announce the result back to the requester chat.",
parameters: SessionsSpawnToolSchema,
execute: async (_toolCallId, args) => {
const params = args as Record<string, unknown>;
const task = readStringParam(params, "task", { required: true });
const label = typeof params.label === "string" ? params.label.trim() : "";
const requestedAgentId = readStringParam(params, "agentId");
const modelOverride = readStringParam(params, "model");
const thinkingOverrideRaw = readStringParam(params, "thinking");
const cleanup =
params.cleanup === "keep" || params.cleanup === "delete" ? params.cleanup : "keep";
const requesterOrigin = normalizeDeliveryContext({
channel: opts?.agentChannel,
accountId: opts?.agentAccountId,
to: opts?.agentTo,
threadId: opts?.agentThreadId,
});
const runTimeoutSeconds = (() => {
const explicit =
typeof params.runTimeoutSeconds === "number" && Number.isFinite(params.runTimeoutSeconds)
? Math.max(0, Math.floor(params.runTimeoutSeconds))
: undefined;
if (explicit !== undefined) {
return explicit;
}
const legacy =
typeof params.timeoutSeconds === "number" && Number.isFinite(params.timeoutSeconds)
? Math.max(0, Math.floor(params.timeoutSeconds))
: undefined;
return legacy ?? 0;
})();
let modelWarning: string | undefined;
let modelApplied = false;
const cfg = loadConfig();
const { mainKey, alias } = resolveMainSessionAlias(cfg);
const requesterSessionKey = opts?.agentSessionKey;
if (typeof requesterSessionKey === "string" && isSubagentSessionKey(requesterSessionKey)) {
return jsonResult({
status: "forbidden",
error: "sessions_spawn is not allowed from sub-agent sessions",
});
}
const requesterInternalKey = requesterSessionKey
? resolveInternalSessionKey({
key: requesterSessionKey,
alias,
mainKey,
})
: alias;
const requesterDisplayKey = resolveDisplaySessionKey({
key: requesterInternalKey,
alias,
mainKey,
});
const requesterAgentId = normalizeAgentId(
opts?.requesterAgentIdOverride ?? parseAgentSessionKey(requesterInternalKey)?.agentId,
);
const targetAgentId = requestedAgentId
? normalizeAgentId(requestedAgentId)
: requesterAgentId;
if (targetAgentId !== requesterAgentId) {
const allowAgents = resolveAgentConfig(cfg, requesterAgentId)?.subagents?.allowAgents ?? [];
const allowAny = allowAgents.some((value) => value.trim() === "*");
const normalizedTargetId = targetAgentId.toLowerCase();
const allowSet = new Set(
allowAgents
.filter((value) => value.trim() && value.trim() !== "*")
.map((value) => normalizeAgentId(value).toLowerCase()),
);
if (!allowAny && !allowSet.has(normalizedTargetId)) {
const allowedText = allowAny
? "*"
: allowSet.size > 0
? Array.from(allowSet).join(", ")
: "none";
return jsonResult({
status: "forbidden",
error: `agentId is not allowed for sessions_spawn (allowed: ${allowedText})`,
});
}
}
const childSessionKey = `agent:${targetAgentId}:subagent:${crypto.randomUUID()}`;
const spawnedByKey = requesterInternalKey;
const targetAgentConfig = resolveAgentConfig(cfg, targetAgentId);
const resolvedModel =
normalizeModelSelection(modelOverride) ??
normalizeModelSelection(targetAgentConfig?.subagents?.model) ??
normalizeModelSelection(cfg.agents?.defaults?.subagents?.model);
let thinkingOverride: string | undefined;
if (thinkingOverrideRaw) {
const normalized = normalizeThinkLevel(thinkingOverrideRaw);
if (!normalized) {
const { provider, model } = splitModelRef(resolvedModel);
const hint = formatThinkingLevels(provider, model);
return jsonResult({
status: "error",
error: `Invalid thinking level "${thinkingOverrideRaw}". Use one of: ${hint}.`,
});
}
thinkingOverride = normalized;
}
if (resolvedModel) {
try {
await callGateway({
method: "sessions.patch",
params: { key: childSessionKey, model: resolvedModel },
timeoutMs: 10_000,
});
modelApplied = true;
} catch (err) {
const messageText =
err instanceof Error ? err.message : typeof err === "string" ? err : "error";
const recoverable =
messageText.includes("invalid model") || messageText.includes("model not allowed");
if (!recoverable) {
return jsonResult({
status: "error",
error: messageText,
childSessionKey,
});
}
modelWarning = messageText;
}
}
const childSystemPrompt = buildSubagentSystemPrompt({
requesterSessionKey,
requesterOrigin,
childSessionKey,
label: label || undefined,
task,
});
const childIdem = crypto.randomUUID();
let childRunId: string = childIdem;
try {
const response = await callGateway<{ runId: string }>({
method: "agent",
params: {
message: task,
sessionKey: childSessionKey,
channel: requesterOrigin?.channel,
idempotencyKey: childIdem,
deliver: false,
lane: AGENT_LANE_SUBAGENT,
extraSystemPrompt: childSystemPrompt,
thinking: thinkingOverride,
timeout: runTimeoutSeconds > 0 ? runTimeoutSeconds : undefined,
label: label || undefined,
spawnedBy: spawnedByKey,
groupId: opts?.agentGroupId ?? undefined,
groupChannel: opts?.agentGroupChannel ?? undefined,
groupSpace: opts?.agentGroupSpace ?? undefined,
},
timeoutMs: 10_000,
});
if (typeof response?.runId === "string" && response.runId) {
childRunId = response.runId;
}
} catch (err) {
const messageText =
err instanceof Error ? err.message : typeof err === "string" ? err : "error";
return jsonResult({
status: "error",
error: messageText,
childSessionKey,
runId: childRunId,
});
}
registerSubagentRun({
runId: childRunId,
childSessionKey,
requesterSessionKey: requesterInternalKey,
requesterOrigin,
requesterDisplayKey,
task,
cleanup,
label: label || undefined,
runTimeoutSeconds,
});
return jsonResult({
status: "accepted",
childSessionKey,
runId: childRunId,
modelApplied: resolvedModel ? modelApplied : undefined,
warning: modelWarning,
});
},
};
}
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