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  • HarnessRouter Community EditionOpen-source agent harness infrastructure and the Unified Harness Protocol.Product
  • Harness catalogSupported harness IDs and source-backed integration references.Harnesses
  • Care Prep BenchmarkThe same task compared across Codex, Claude Code, and Hermes configurations.Benchmarks
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  • Hermes AgentAn open-source, persistent AI agent with memory, reusable skills, built-in tools, browser automation, scheduled tasks, and subagents.Harnesses
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Hermes Agent

By Nous Research · Available on HarnessRouter

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An open-source, persistent AI agent with memory, reusable skills, built-in tools, browser automation, scheduled tasks, and subagents.

30-day usageAug 14–Sep 12, 2026

Data as of September 13, 2026 · About the data

Rank#1#1 of 21 CLI agents
Tokens50.5T
Requests513.7M

Capabilities and verification

Reviewed against the HarnessRouter capability catalog on August 24, 2026. Every verified row cites its public source; rule-derived rows apply HarnessRouter's published classification rules to documented behavior. A “No public evidence” badge marks a gap in the public record, not a statement that Hermes Agent lacks them.

Configuration & support

  • Other modelsDirectly verified
  • Custom instructionsDirectly verified
  • SkillsDirectly verified
  • Custom toolsDirectly verified
  • MCPDirectly verified
  • Sandbox & approvalsDirectly verified
  • SessionsDirectly verified
  • SubagentsDirectly verified

Execution & agency

  • Workspace filesDirectly verified
  • Structured actionsDirectly verified

Environment control

  • Browser controlDirectly verified
  • Computer controlDirectly verified

Observation & capture

  • Screen observationDirectly verified
  • Screenshot exportDirectly verified
  • Recording exportNo public evidence

Artifact outputs

  • DocumentsDirectly verified
  • SpreadsheetsDirectly verified
  • PresentationsDirectly verified
  • ImagesDirectly verified
  • VideoRule-derived
  • App deploymentNo public evidence

Sources: hermes-agent.nousresearch.com

Machine interfaces

  • Headless CLI · Stable
  • MCP server · Stable

Benchmark evidence

Hermes Agent configurations from the HarnessRouter Care Prep benchmark, published August 10, 2026. One controlled synthetic-data task; results apply to this test, not universally.

ModelEnd-to-end latencyCost
gpt-5.22m 33s0.47 credits
gpt-5.51m 25s40.7 credits
claude-sonnet-4.62m 49s39.6 credits
claude-opus-4.82m 42s150 credits

Execution success and strict grounding pass rates for these configurations are published in the observed-history capture on the benchmark report.

See the full benchmark report

Run Hermes Agent through HarnessRouter

API harness ID: hermes

Use it for autonomous-agent tasks returned through the HarnessRouter product contract.

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Run a taskHarnesses API

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