united-workforce/packages/workflow-agent-hermes

@united-workforce/agent-hermes

uwf-hermes — an agent adapter that bridges the uwf workflow engine and the Hermes CLI.

Overview

uwf-hermes is an adapter (not the Hermes CLI itself). The uwf engine speaks a generic agent protocol (stdin/stdout frontmatter contract); uwf-hermes translates that protocol into Hermes ACP (Agent Client Protocol) calls. Other adapters (e.g. uwf-claude-code, uwf-cursor) do the same for their respective CLIs.

On first visit to a role it sends a composed prompt (role definition, task, history, edge prompt); on continuation it resumes the cached session. Session transcripts and raw output are stored as CAS detail nodes.

Dependencies: @ocas/core, @united-workforce/util-agent, @united-workforce/protocol, @united-workforce/util

Installation

Included as the uwf-hermes binary when you install @united-workforce/agent-hermes:

bun add -g @united-workforce/agent-hermes

Requires the hermes CLI on PATH.

Hermes must write session JSON snapshots so uwf-hermes can load structured tool calls from disk. Add this to ~/.hermes/config.yaml:

sessions:
  write_json_snapshots: true

Session files are stored at ~/.hermes/sessions/session_{sessionId}.json.

CLI Usage

Invoked by uwf thread step (not typically run directly):

uwf-hermes <thread-id> <role>

Environment variables set by the engine:

Variable	Purpose
UWF_EDGE_PROMPT	Moderator edge instruction for this step

Configure as the default agent via uwf setup --agent hermes.

Override per step:

uwf thread step <thread-id> --agent uwf-hermes

API

All exports come from src/index.ts.

Agent factory

function createHermesAgent(): () => Promise<void>
function buildHermesPrompt(ctx: AgentContext): string

ACP client

class HermesAcpClient {
  // Spawns hermes, handles JSON-RPC over stdio
}

Usage (library)

import { createHermesAgent, buildHermesPrompt } from "@united-workforce/agent-hermes";

// CLI entry (src/cli.ts):
const main = createHermesAgent();
void main();

Internal Structure

src/
├── index.ts
├── cli.ts              Binary entrypoint
├── hermes.ts           createHermesAgent, buildHermesPrompt
├── acp-client.ts       HermesAcpClient — ACP JSON-RPC over stdio
├── session-cache.ts    Session ID cache (re-exports kit helpers + isResumeDisabled)
├── session-detail.ts   Parse Hermes session JSON, store CAS detail nodes
├── schemas.ts          Hermes detail CAS schemas
└── types.ts            HermesSessionJson, HermesSessionMessage

Configuration

Uses workflow config from ~/.uncaged/workflow/config.yaml (via agent-kit). Hermes session files are stored under the workflow storage root (see session-detail.ts).

Set UWF_HERMES_NO_RESUME=1 to disable session resume (see isResumeDisabled in session-cache.ts).