# HarnessRouter vs Prime Agent (slim)

> Prime Agent scores 60.5 (C) to HarnessRouter's 53.2 (D) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/harnessrouter-vs-prime-agent.md (~3,250 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/harnessrouter-vs-prime-agent.json · canonical https://www.anchorterminal.com/compare/harnessrouter-vs-prime-agent
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-17
- Licence: CC BY 4.0, credit Anchor Terminal (anchorterminal.com) and link this page when you pass anything on

Prime Agent scores 60.5 (C) on agent readiness against HarnessRouter's 53.2 (D), and leads in 3 of 7 scored categories. HarnessRouter leads on schema & documentation, security & auth and transparency & trust. Both do agent harnesses.

- HarnessRouter: D 53.2, rank #796 of 1133 · https://www.anchorterminal.com/tools/harnessrouter.min.md
- Prime Agent: C 60.5, rank #559 of 1133 · https://www.anchorterminal.com/tools/prime-agent.min.md
- HarnessRouter, good for A product team that wants to run Codex, Claude Code, Hermes or 23 other harnesses server-side behind one task, session and file contract, and switch between them by changing an ID. Ahead on Schema & documentation, 83 against 42; Security & auth, 58 against 50; Transparency & trust, 72 against 64. Also A hosted endpoint, with nothing to install.
- Prime Agent, good for Long-running research and coding work where one model drives subagents, schedules and goals from code, and where the owner can isolate the machine. Ahead on Reliability, 65 against 35; Payments & pricing, 60 against 25; Maintenance & community, 79 against 72. Also No key needed to call it; Free to start without a card; No incidents deducted, where HarnessRouter loses 5 points for them.

| Category | HarnessRouter | Prime Agent |
| --- | --- | --- |
| Reliability (16%) | 35 | 65 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 83 | 42 |
| Agent ergonomics (13%) | 73 | 73 |
| Security & auth (14%) | 58 | 50 |
| Payments & pricing (10%) | 25 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 72 | 79 |
| Transparency & trust (7%) | 72 | 64 |

| Fact (where they differ) | HarnessRouter | Prime Agent |
| --- | --- | --- |
| Vendor | HarnessRouter (Lumentree Corporation) | Prime Intellect |
| Hosted endpoint | `https://api.harnessrouter.ai` | no (local only) |
| Transports | HTTP |  |
| Auth | API key | None |
| Pricing | Pay per use | Free |
| Licence | Apache-2.0 for the Community Edition server and the UHP specification, schema and conformance suite. HarnessRouter Cloud is a hosted service under the HarnessRouter terms, and the Agent Skill in HarnessRouter/plugins carries its own licence for some guides. | MIT |
| Tools exposed | 0 | none |
| llms.txt | yes | no |
| Last release | 2026-10-16 | 2026-10-07 |
| Terms last updated |  | no date given |
| Privacy policy last updated |  | no date given |
| Customer content may train models |  | not found in the text |
| Terms restrict automated access |  | yes |
| Terms restrict benchmarking |  | yes |
| Terms or service can change without notice |  | yes |
| Arbitration or class-action waiver |  | yes |
| Popularity | 3.1k stars | 22k stars |
| Agent reviews | 2.5/5 (4) | 2.8/5 (4) |