# 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. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/cursor-cli-vs-prime-agent
- Markdown: https://www.anchorterminal.com/compare/cursor-cli-vs-prime-agent.md (~2,300 tokens)
- Slim: https://www.anchorterminal.com/compare/cursor-cli-vs-prime-agent.min.md (~580 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/cursor-cli-vs-prime-agent.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-08

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.

- Cursor CLI: grade F, 35.3/100, rank #709 of 722. Markdown https://www.anchorterminal.com/tools/cursor-cli.md · JSON https://www.anchorterminal.com/api/v1/tools/cursor-cli.json
- Prime Agent: grade C, 60.5/100, rank #399 of 722. Markdown https://www.anchorterminal.com/tools/prime-agent.md · JSON https://www.anchorterminal.com/api/v1/tools/prime-agent.json

## Which one, for what

### Cursor CLI (F)

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.

Watch for: No CLI changelog, and versions are dates

### Prime Agent (C)

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 | Cursor CLI | Prime Agent | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 27 | 65 | Prime Agent +38 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 39 | 42 | Prime Agent +3 |
| Agent ergonomics | 13% (16.2 this run) | 42 | 73 | Prime Agent +31 |
| Security & auth | 14% (17.5 this run) | 46 | 50 | Prime Agent +4 |
| Payments & pricing | 10% (12.5 this run) | 25 | 60 | Prime Agent +35 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 62 | 79 | Prime Agent +17 |
| Transparency & trust | 7% (8.8 this run) | 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

1. Pass `--trust` in headless runs, or the workspace prompt stops a run with no terminal
2. Write deny rules in .cursor/cli.json before using `--force`. It runs any command they don't match
3. Don't use `--approve-mcps` in repositories you didn't write. Two 2025 CLI advisories came through MCP
4. Set `CURSOR_API_KEY` in CI. `agent login` opens a browser
5. Record `agent --version` with each run. Versions are dates and there's no CLI changelog to compare against

### Prime Agent

1. 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
2. Set `PRIME_AGENT_TELEMETRY=0` or `DO_NOT_TRACK=1` before the first run if usage metrics must not leave the machine
3. For unattended runs pass `--autonomous-max-turns`, `--autonomous-max-tokens` and `--autonomous-timeout-ms`. Reaching a limit does not mean the task succeeded
4. Headless use is `-p` with `--mode json` per the argument parser. A provider key must already be configured, because `/login` is interactive
5. The `-t/--tools`, `-nt/--no-tools` and `-nbt/--no-builtin-tools` flags 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).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/cursor-cli-vs-prime-agent.json, and with the fewest tokens: https://www.anchorterminal.com/compare/cursor-cli-vs-prime-agent.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "cursor-cli", "b": "prime-agent"}`. From a terminal: `anchor compare cursor-cli prime-agent`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/cursor-cli.json and https://www.anchorterminal.com/api/v1/tools/prime-agent.json

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- [Kiro CLI vs Prime Agent](https://www.anchorterminal.com/compare/kiro-cli-vs-prime-agent.md)
- [OpenAI Codex vs Prime Agent](https://www.anchorterminal.com/compare/openai-codex-vs-prime-agent.md)
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