Hermes Agent

Production agent framework by NousResearch. The core class is AIAgent in run_agent.py (~10,700 lines).

Key Characteristics

• Multi-provider: supports OpenAI-compatible, Codex/Responses, and native Anthropic APIs via a mode abstraction
• Two entry points: agent.chat() (returns string) and agent.run_conversation() (returns full dict with messages, metadata, usage)
• Concurrent tool execution: multiple tool calls dispatched via ThreadPoolExecutor
• Interruptible: API calls run in background threads; can be abandoned without polluting history
• Budget-aware: parent agents default 90 turns; subagents capped at 50
• Session-persistent: messages saved after each turn; compression generates new lineage ID

Core Loop

See Hermes Agent Loop for the full turn lifecycle.

Related Pages

• NousResearch — the organization
• Hermes Agent Loop — loop mechanics
• Source - Hermes Agent Loop (Nous Research Developer Guide)