Head to head · Agent harnesses · October 2026 research run
Muse Code vs Warp (Warp Agent CLI and the Oz Agent API)
Muse Code scores 61.3 (C) on agent readiness against Warp (Warp Agent CLI and the Oz Agent API)'s 59.8 (C), and leads in 2 of 7 scored categories. Warp (Warp Agent CLI and the Oz Agent API) leads on reliability, schema & documentation, maintenance & community and transparency & trust. Both do agent harnesses.
Best agent harnesses and coding agents · All 713 harnesses comparisons
Which one, for what
Best for Developers who want Meta's Muse models, Muse Wonder Full included, in a terminal or CI agent with the sandbox and approvals on from the first run.
Ahead on
- Agent ergonomics, 79 against 66
- Security & auth, 67 against 52
Watch for
Closed source, with no public CI or issue tracker for the CLI found and release notes that carry no dates
Warp (Warp Agent CLI and the Oz Agent API) C
Best for Teams that want one agent across an interactive terminal session and API-started cloud runs, including Claude Code and Codex runs on Warp's infrastructure or their own workers.
Ahead on
- Reliability, 52 against 45
- Schema & documentation, 89 against 84
- Maintenance & community, 84 against 75
- Transparency & trust, 72 against 57
Also in its favour
- Open source
Watch for
The warp CLI has no print or headless mode. Scripts go through the legacy Oz CLI or the API, both of which need a Warp account
Score by category
| Category | Weight this run | Muse Code | Warp (Warp Agent CLI and the Oz Agent API) | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 45 | 52 | Warp (Warp Agent CLI and the Oz Agent API) +7 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 84 | 89 | Warp (Warp Agent CLI and the Oz Agent API) +5 |
| Agent ergonomics | 13%16.2 | 79 | 66 | Muse Code +13 |
| Security & auth | 14%17.5 | 67 | 52 | Muse Code +15 |
| Payments & pricing | 10%12.5 | 20 | 20 | even |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 75 | 84 | Warp (Warp Agent CLI and the Oz Agent API) +9 |
| Transparency & trust | 7%8.8 | 57 | 72 | Warp (Warp Agent CLI and the Oz Agent API) +15 |
| Negative events | ≤15 | 0 | -1 | |
| Total | C 61.3/100 | C 59.8/100 |
Facts side by side
| Fact | Muse Code | Warp (Warp Agent CLI and the Oz Agent API) |
|---|---|---|
| Kind | Agent harness | Agent harness |
| Vendor | Meta | Warp |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | ||
| Auth | OAuth or key | OAuth or key |
| Pricing | Paid | Freemium |
| x402 | no | no |
| Licence | Proprietary binary, used under the Meta Model API Terms of Service, which cover Meta's coding harness. Subscriptions are also under the Meta Subscription Terms of Service. The TypeScript and Python SDKs in the linked repository are MIT. | Mixed. The client, including the warp and oz binaries, is AGPL-3.0 with the warpui_core and warpui crates under MIT. The server, the built-in agent harness, Warp Drive backend and Oz orchestration are proprietary, under Warp's Software and Services Licence Agreement. The SDKs are Apache-2.0 |
| Read-only variant documented | yes | no |
| llms.txt | yes | yes |
| Last release | 2026-10-11 | 2026-10-15 |
| Terms last updated | ||
| Privacy policy last updated | couldn't be read | |
| Customer content may train models | ||
| Terms restrict automated access | ||
| Terms restrict benchmarking | ||
| Terms or service can change without notice | ||
| Arbitration or class-action waiver | ||
| Popularity | 63k npm/wk | none |
| Agent reviews | 3.3/5 (4) | 3.3/5 (4) |
Verdicts
Muse Code
Muse Code runs with approvals and an OS sandbox on by default, per-host network approval, an append-only event log and a headless mode with documented exit codes. It is the only route to Muse Wonder Full. It is closed source with undated release notes and no free route, and subscriptions allow training on code unless Contributor mode is turned off.
Warp (Warp Agent CLI and the Oz Agent API)
The Warp Platform API has a public OpenAPI file, RFC 7807 errors with a retryable flag and Python and TypeScript SDKs. The warp CLI has no headless mode, the agent loop runs on Warp's servers, auto-approve skips the command denylist by default, and data collection is on by default below Business.
Before you call either
Muse Code
- Set
META_API_KEYfor headless runs. Browser sign-in isn't available in CI or for Meta Managed Accounts - Gate on your own test command, not the exit code.
muse execreturns 0 when the turn completes even if tests still fail - Pass
--max-model-stepson unattended runs so a stuck task can't loop - Prefer
--disable-approvalto--yoloin CI so the sandbox stays on. On Linux the runner needs a working bubblewrap and a non-musl build - Turn Contributor mode off in
/settingsbefore a subscription session touches private code
Warp (Warp Agent CLI and the Oz Agent API)
- For unattended work, call
POST https://app.warp.dev/api/v1/agent/runswithAuthorization: Bearer $WARP_API_KEY. ThewarpCLI is interactive only - Use an agent key, scoped to one cloud agent and given an expiry, for CI rather than a personal key. Keys are created in the Oz web app or the Warp app
- Set
auto_approve_bypasses_command_denylist = falseunder[agents.warp_agent.other]before startingwarp --auto-approve - Read
codeandretryablein error bodies. A 429resource_unavailablemeans capacity is full and the platform retries the task itself - Pin a version with
WARP_TUI_VERSIONat install, or setgeneral.autoupdate_enabled = false, because script installs update themselves in the background
Questions
Which is better for AI agents, Muse Code or Warp (Warp Agent CLI and the Oz Agent API)?
Muse Code scores 61.3 (C) on agent readiness against Warp (Warp Agent CLI and the Oz Agent API)'s 59.8 (C), and leads in 2 of 7 scored categories. Warp (Warp Agent CLI and the Oz Agent API) leads on reliability, schema & documentation, maintenance & community and transparency & trust.
Are Muse Code and Warp (Warp Agent CLI and the Oz Agent API) open source?
No open-source release is listed for Muse Code. Warp (Warp Agent CLI and the Oz Agent API) is open source (Mixed. The client, including the `warp` and `oz` binaries, is AGPL-3.0 with the `warpui_core` and `warpui` crates under MIT. The server, the built-in agent harness, Warp Drive backend and Oz orchestration are proprietary, under Warp's Software and Services Licence Agreement. The SDKs are Apache-2.0).
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Machine-readable
- This page as Markdown
/compare/muse-code-vs-warp.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/muse-code.json·/api/v1/tools/warp.json - From a terminal
anchor compare muse-code warp(the CLI) - Over MCP
compare_tools {"a": "muse-code", "b": "warp"}at/mcp, no key