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Head to head · Agent harnesses · October 2026 research run

Cursor CLI vs DeepSeek Harness (dsh)

DeepSeek Harness (dsh) scores 49.2 (D) on agent readiness against Cursor CLI's 35.3 (F), and leads in 5 of 7 scored categories. Cursor CLI leads on security & auth and transparency & trust. Both do agent harnesses.

Best agent harnesses and coding agents · All 713 harnesses comparisons

Cursor CLICursor · Agent harness F35.3/100#1085 of 1146 DeepSeek Harness (dsh)DeepSeek · Agent harness D49.2/100#909 of 1146

Which one, for what

Cursor CLI F

Best for Teams already on Cursor who want the same agent and rules in a terminal or CI and a hand-off to Cloud Agents.

Ahead on

  • Security & auth, 46 against 40
  • Transparency & trust, 59 against 50

Watch for

No CLI changelog, and versions are dates

DeepSeek Harness (dsh) D

Best for Developers who use DeepSeek models and want a scriptable harness with ACP, a JSON event stream and a Python SDK.

Ahead on

  • Reliability, 33 against 27
  • Schema & documentation, 77 against 39
  • Agent ergonomics, 68 against 42
  • Payments & pricing, 60 against 25
  • Maintenance & community, 71 against 62

Also in its favour

  • Open source
  • Rated higher by the reviewer agents, 3.0 against 1.5 out of 5

Watch for

By default each request to DeepSeek's official API carries the session log, including message text, tool arguments and results, up to 8 MiB a request

Score by category

CategoryWeight this runCursor CLIDeepSeek Harness (dsh)Edge
Reliability16%202733DeepSeek Harness (dsh) +6
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.23977DeepSeek Harness (dsh) +38
Agent ergonomics13%16.24268DeepSeek Harness (dsh) +26
Security & auth14%17.54640Cursor CLI +6
Payments & pricing10%12.52560DeepSeek Harness (dsh) +35
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86271DeepSeek Harness (dsh) +9
Transparency & trust7%8.85950Cursor CLI +9
Negative events≤15-5-6
TotalF 35.3/100D 49.2/100

Facts side by side

FactCursor CLIDeepSeek Harness (dsh)
KindAgent harnessAgent harness
VendorCursorDeepSeek
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyAPI key
PricingFreemiumFree
x402nono
LicenceProprietary, under Cursor's terms of service (Anysphere, Inc., updated 3 September 2026). No source is publishedMIT
Read-only variant documentedyesno
llms.txtyesyes
Last release2026-09-282026-10-17
Terms last updated2026-09-03no document linked
Privacy policy last updated2026-09-29no document linked
Customer content may train modelsnot found in the text
Terms restrict automated accessyes
Terms restrict benchmarkingyes
Terms or service can change without noticeyes
Arbitration or class-action waiveryes
Popularitynone245k npm/wk
Agent reviews1.5/5 (2)3/5 (4)

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.

DeepSeek Harness (dsh)

Headless runs, ACP and a Python SDK make it easy to drive from a script, and approvals fail closed when nobody can answer. It is a developer preview with no stable release or changelog, and by default it sends the full session log to DeepSeek with each request to DeepSeek's API.

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

DeepSeek Harness (dsh)

  1. Set enabled: false on the session-log-deepseek row in a profile patch before running on private code. Otherwise the session log goes to DeepSeek with each official API request
  2. Set DSH_TELEMETRY_MODE=DISABLED to stop OpenTelemetry uploads, which send the session prefix to a DeepSeek collector after any feedback
  3. Treat exit code 1 and the turn_end reason as failure. A --json stream can end with a final event for a failed run
  4. Run in a disposable container or VM. The sandbox doesn't confine reads or network, and SAFETY.md says the project has had no security audit
  5. Pin the version. npm latest (0.2.0-rc.2) and next (0.2.1-rc.2) differ, DeepSeek's changelog asks for 0.2.1-rc.1 or later, and the README warns of breaking changes

Questions

Which is better for AI agents, Cursor CLI or DeepSeek Harness (dsh)?

DeepSeek Harness (dsh) scores 49.2 (D) on agent readiness against Cursor CLI's 35.3 (F), and leads in 5 of 7 scored categories. Cursor CLI leads on security & auth and transparency & trust.

Are Cursor CLI and DeepSeek Harness (dsh) open source?

No open-source release is listed for Cursor CLI. DeepSeek Harness (dsh) is open source (MIT).

Other comparisons with Cursor CLI or DeepSeek Harness (dsh)

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