# Muse Code vs Warp (Warp Agent CLI and the Oz Agent API)

> Muse Code scores 61.3 (C) to Warp's 59.8 (C) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/muse-code-vs-warp
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- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
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- Updated: 2026-10-18

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.

- Muse Code: grade C, 61.3/100, rank #521 of 1146. Markdown https://www.anchorterminal.com/tools/muse-code.md · JSON https://www.anchorterminal.com/api/v1/tools/muse-code.json
- Warp (Warp Agent CLI and the Oz Agent API): grade C, 59.8/100, rank #592 of 1146. Markdown https://www.anchorterminal.com/tools/warp.md · JSON https://www.anchorterminal.com/api/v1/tools/warp.json
- Best agent harnesses and coding agents: https://www.anchorterminal.com/best/agent-harnesses/index.md
- All 713 harnesses comparisons: https://www.anchorterminal.com/compare/agent-harnesses/index.md

## Which one, for what

### Muse Code (C)

Good 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)

Good 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 | Muse Code | Warp (Warp Agent CLI and the Oz Agent API) | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 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 this run) | 84 | 89 | Warp (Warp Agent CLI and the Oz Agent API) +5 |
| Agent ergonomics | 13% (16.2 this run) | 79 | 66 | Muse Code +13 |
| Security & auth | 14% (17.5 this run) | 67 | 52 | Muse Code +15 |
| Payments & pricing | 10% (12.5 this run) | 20 | 20 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 75 | 84 | Warp (Warp Agent CLI and the Oz Agent API) +9 |
| Transparency & trust | 7% (8.8 this run) | 57 | 72 | Warp (Warp Agent CLI and the Oz Agent API) +15 |
| Negative events | ≤15 | 0 | -1 | |
| **Total** | | **61.3 · C** | **59.8 · C** | |

## 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

1. Set `META_API_KEY` for headless runs. Browser sign-in isn't available in CI or for Meta Managed Accounts
2. Gate on your own test command, not the exit code. `muse exec` returns 0 when the turn completes even if tests still fail
3. Pass `--max-model-steps` on unattended runs so a stuck task can't loop
4. Prefer `--disable-approval` to `--yolo` in CI so the sandbox stays on. On Linux the runner needs a working bubblewrap and a non-musl build
5. Turn Contributor mode off in `/settings` before a subscription session touches private code

### Warp (Warp Agent CLI and the Oz Agent API)

1. For unattended work, call `POST https://app.warp.dev/api/v1/agent/runs` with `Authorization: Bearer $WARP_API_KEY`. The `warp` CLI is interactive only
2. 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
3. Set `auto_approve_bypasses_command_denylist = false` under `[agents.warp_agent.other]` before starting `warp --auto-approve`
4. Read `code` and `retryable` in error bodies. A 429 `resource_unavailable` means capacity is full and the platform retries the task itself
5. Pin a version with `WARP_TUI_VERSION` at install, or set `general.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).


## For agents

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

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- [Agent Zero vs Muse Code](https://www.anchorterminal.com/compare/agent-zero-vs-muse-code.md)
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