Harness on ChatGPT, Claude, Cursor and Grok Bot
Listings side by side
| Field | HarnessChatGPT · Apps SDK | HarnessClaude · Connector | Harness MCP ServerClaude · Desktop extension | harnessClaude · Plugin | HarnessCursor · Plugin | HarnessCursor · MCP server | HarnessGrok Bot · Plugin |
|---|---|---|---|---|---|---|---|
| Kind | Apps SDK | Connector | Desktop extension | Plugin | Plugin | MCP server | Plugin |
| Best rank | #294 Developer Tools | #589 Most popular · among connectors | #91 Most popular · among desktop extensions | — | #135 Popular | #814 Top | #135 Popular |
| Charts | 1 | 3 | 2 | — | 1 | 2 | 1 |
| Countries | 48/48 | Worldwide | Worldwide | Worldwide | Worldwide | Worldwide | Worldwide |
| Tools or skills | — | 11 | — | — | — | — | — |
| MCP server | mcp.harness.io | mcp.harness.io | — | — | mcp.harness.io | — | mcp.harness.io |
| Developer | Harness.io | Harness.io | Harness Inc. | — | Harness | — | Harness |
| Website | harness.io | harness.io | harness.io | — | harness.io | — | harness.io |
| Starter prompts | — | — | — | — | — | — | — |
| Created or launched | Created Sep 17, 2026 | Launched May 21, 2026 | Launched May 7, 2026 | Launched Mar 31, 2026 | Launched Apr 28, 2026 | Launched Mar 13, 2026 | Launched Apr 28, 2026 |
| Listing changes | — | — | — | — | — | — | — |
Gaps
ChatGPT · Apps SDK
- 11 tools not herecreate, delete, describe, diagnose…
- No skill names
Claude · Connector + Desktop extension + Plugin
No gaps
Cursor · Plugin + MCP server
- 11 tools or skills not herecreate, delete, describe, diagnose…
- No tool names
Grok Bot · Plugin
- 11 tools or skills not herecreate, delete, describe, diagnose…
- No tool names
Tool coverage
| Tool | ChatGPT · Apps SDK— | Claude · Connector11 tools | Claude · Desktop extension— | Claude · Plugin— | Cursor · Plugin— | Cursor · MCP server— | Grok Bot · Plugin— |
|---|---|---|---|---|---|---|---|
| create | – | harness_create | – | – | – | – | – |
| delete | – | harness_delete | – | – | – | – | – |
| describe | – | harness_describe | – | – | – | – | – |
| diagnose | – | harness_diagnose | – | – | – | – | – |
| execute | – | harness_execute | – | – | – | – | – |
| get | – | harness_get | – | – | – | – | – |
| list | – | harness_list | – | – | – | – | – |
| schema | – | harness_schema | – | – | – | – | – |
| search | – | harness_search | – | – | – | – | – |
| status | – | harness_status | – | – | – | – | – |
| update | – | harness_update | – | – | – | – | – |