Browse 41 harnesses

## 30-day usage· **Aug 12–Sep 10, 2026**  
Data as of September 11, 2026 · [About the data](/content/rankings/index.html)

Rank **#13**  
Tokens **445.4B**  
Requests **4.1M**

## 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 Zoo Code lacks them.

### Configuration & support

- **Other models** Directly verified  
- **Custom instructions** Directly verified  
- **Skills** Directly verified  
- **Custom tools** No public evidence  
- **MCP** Directly verified  
- **Sandbox & approvals** Directly verified  
- **Sessions** Directly verified  
- **Subagents** Directly verified

### Execution & agency

- **Workspace files** Directly verified  
- **Structured actions** Directly verified

### Environment control

- **Browser control** No public evidence  
- **Computer control** No public evidence

### Observation & capture

- **Screen observation** No public evidence  
- **Screenshot export** No public evidence  
- **Recording export** No public evidence

### Artifact outputs

- **Documents** Rule-derived  
- **Spreadsheets** Rule-derived  
- **Presentations** Rule-derived  
- **Images** Directly verified  
- **Video** Rule-derived  
- **App deployment** No public evidence

Sources: docs.zoocode.dev

### Machine interfaces

No public machine interface was documented at the August 24, 2026 review. This records what public documentation showed, not that no interface exists.

## Want Zoo Code supported through UHP Unified Harness Protocol defines a shared contract for running agent harnesses through one interface. A compatible implementation lets HarnessRouter support this harness without changing your product integration.