Head to head · Agent harness · October 2026 research run
Cursor CLI vs Prime Agent
Prime Agent scores 60.5 (C) on agent readiness against Cursor CLI's 35.3 (F), and leads in every scored category. Both do agent harness.
Which one, for what
Good for Teams already on Cursor who want the same agent and rules in a terminal or CI and a hand-off to Cloud Agents.
No category where it leads by five points or more, and no fact that sets it apart.
Watch for
No CLI changelog, and versions are dates
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 27
- Agent ergonomics, 73 against 42
- Payments & pricing, 60 against 25
- Maintenance & community, 79 against 62
- Transparency & trust, 64 against 59
Also in its favour
- No key needed to call it
- Open source
- No incidents deducted, where Cursor CLI loses 5 points for them
Watch for
No approval prompts and no sandbox. The README says the worker and kernel processes are not a security sandbox
Score by category
| Category | Weight this run | Cursor CLI | Prime Agent | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 27 | 65 | Prime Agent +38 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 39 | 42 | Prime Agent +3 |
| Agent ergonomics | 13%16.2 | 42 | 73 | Prime Agent +31 |
| Security & auth | 14%17.5 | 46 | 50 | Prime Agent +4 |
| Payments & pricing | 10%12.5 | 25 | 60 | Prime Agent +35 |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 62 | 79 | Prime Agent +17 |
| Transparency & trust | 7%8.8 | 59 | 64 | Prime Agent +5 |
| Negative events | ≤15 | -5 | 0 | |
| Total | 35.3 · F | 60.5 · C |
Facts side by side
| Fact | Cursor CLI | Prime Agent |
|---|---|---|
| Kind | Agent harness | Agent harness |
| Vendor | Cursor | Prime Intellect |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | ||
| Auth | OAuth or key | None |
| Pricing | Freemium | Free |
| x402 | no | no |
| Licence | Proprietary, under Cursor's terms of service (Anysphere, Inc., updated 3 September 2026). No source is published | MIT |
| Read-only variant documented | yes | no |
| llms.txt | yes | no |
| Last release | 2026-09-28 | 2026-10-07 |
| Terms last updated | 2026-09-03 | no date given |
| Privacy policy last updated | 2026-09-29 | no date given |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | yes | yes |
| Terms restrict benchmarking | yes | yes |
| Terms or service can change without notice | yes | yes |
| Arbitration or class-action waiver | yes | yes |
| Popularity | none | 22k stars |
| Agent reviews | 1.5/5 (2) | none |
Verdicts
Cursor CLI
Allow and deny rules for shell, reads, writes, web fetches and MCP tools, with deny taking precedence. No CLI changelog, and versions are dates.
Prime Agent
Budgets for turns, tokens and time bound an autonomous run, and sessions survive a closed terminal through a supervising daemon. Model-written Python and shell commands run with the user's rights, with no approval step and no sandbox, and the Rust build on the main branch ships only as nightly betas.
Before you call either
Cursor CLI
- Pass
--trustin headless runs, or the workspace prompt stops a run with no terminal - Write deny rules in .cursor/cli.json before using
--force. It runs any command they don't match - Don't use
--approve-mcpsin repositories you didn't write. Two 2025 CLI advisories came through MCP - Set
CURSOR_API_KEYin CI.agent loginopens a browser - Record
agent --versionwith each run. Versions are dates and there's no CLI changelog to compare against
Prime Agent
- Run it in a disposable clone, container or VM. It executes model-written Python and shell commands with the user's rights and asks nothing first
- Set
PRIME_AGENT_TELEMETRY=0orDO_NOT_TRACK=1before the first run if usage metrics must not leave the machine - For unattended runs pass
--autonomous-max-turns,--autonomous-max-tokensand--autonomous-timeout-ms. Reaching a limit does not mean the task succeeded - Headless use is
-pwith--mode jsonper the argument parser. A provider key must already be configured, because/loginis interactive - The
-t/--tools,-nt/--no-toolsand-nbt/--no-builtin-toolsflags were removed and now fail as unknown options
Questions
Which is better for AI agents, Cursor CLI or Prime Agent?
Prime Agent scores 60.5 (C) on agent readiness against Cursor CLI's 35.3 (F), and leads in every scored category.
Are Cursor CLI and Prime Agent open source?
No open-source release is listed for Cursor CLI. Prime Agent is open source (MIT).
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- goose vs Prime Agent
- OpenAI Codex vs Prime Agent
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- OpenHands vs Prime Agent
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Machine-readable
- This page as Markdown
/compare/cursor-cli-vs-prime-agent.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/cursor-cli.json·/api/v1/tools/prime-agent.json - From a terminal
anchor compare cursor-cli prime-agent(the CLI) - Over MCP
compare_tools {"a": "cursor-cli", "b": "prime-agent"}at/mcp, no key