{ "data": { "a": { "slug": "muse-code", "name": "Muse Code", "vendor": "Meta", "vendorUrl": "https://dev.meta.ai/products/muse-code", "kind": "harness", "category": "agent-harnesses", "summary": "Muse Code is Meta's coding agent for the terminal and CI, built for its Muse models. It plans, edits files and runs commands under approvals and an OS sandbox, interactively, headless through `muse exec` or from an SDK.", "url": "https://www.anchorterminal.com/tools/muse-code", "markdownUrl": "https://www.anchorterminal.com/tools/muse-code.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/muse-code.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/muse-code.json", "dns": "muse-code.grade.anchorterminal.com", "repo": "https://github.com/meta-models/muse-code-sdk", "license": "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.", "transports": [], "packages": [ { "registry": "npm", "name": "@muse-code/sdk" }, { "registry": "pypi", "name": "muse-code-sdk" } ], "auth": "mixed", "authNotes": "A browser sign-in to a Meta Model API account on first run, or a Meta Model API key in `META_API_KEY` or stored with `muse auth set`. A key takes priority over a browser session. CI runs and Meta Managed Accounts must use a key.", "pricing": "paid", "pricingNotes": "Pay-as-you-go at Meta Model API token prices, or a monthly plan at $5 (Everyday Usage), $15 (High Usage), $50 (Power Usage) or $200 (Maximum Usage), checked 2026-10-12. Muse Wonder Full needs Power Usage or Maximum Usage. No free plan or trial was found.", "priceSummary": "$5 / mo", "where": "local", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the Muse Code docs, the subscription pages or dev.meta.ai/llms.txt, checked 12 October 2026. Plans are paid through Meta Accounts Centre and pay-as-you-go through Model API billing.", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": 63119, "pypiWeekly": null, "asOf": "2026-10-12" }, "docsUrl": "https://dev.meta.ai/docs/muse-code", "llmsTxt": "https://dev.meta.ai/llms.txt", "capabilities": [ "agent.harness", "agent.mcp-client", "agent.multi-agent" ], "tags": [ "official", "harness", "coding-agent", "cli", "closed-source", "mcp", "llms-txt", "sandbox", "approvals", "card-required" ], "lastRelease": "2026-10-24", "graded": true, "anchor": { "graded": true, "score": 56.2, "grade": "C", "agentReady": false, "rank": 833, "ranked": true, "rankOf": 1486, "categoryRank": 31, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 79, "maintenance": 75, "payments": 20, "reliability": 45, "schema": 84, "security": 67, "transparency": 56 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-02" }, "negative": -5, "negativeNotes": [ "2026-10-24. Security fixes released without an advisory, -3. Muse Code's release notes describe flaws in its own code fixed in released versions, among them sandboxed commands able to read or change sign-in details and approval rules in ~/.config/muse (1.4.10, 16 October 2026), Sapling commands running outside the sandbox (1.4.12, 22 October) and untrusted workspaces receiving project rules from a trusted session (1.4.13, 24 October), with 1.4.6's `find -exec rm` approval gap (11 October). OSV holds no advisory for either SDK, and repeats fold into one term. Source https://dev.meta.ai/docs/muse-code/changelog.md", "2026-11-02. Telemetry on by default without disclosure, -2. The settings page lists only \"telemetry options\", and the release notes speak of a saved opt-out for feedback and diagnostic upload and for the remote settings check, but no page says what is sent or that it's on by default. Source https://dev.meta.ai/docs/muse-code/configuration.md" ], "verdict": "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 ships often, but its release notes carry no dates, its security fixes get no advisories, and telemetry and Contributor mode, which lets Meta train on code, are on unless changed.", "bestFor": "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.", "strengths": [ "Sandbox on by default (Seatbelt on macOS, bubblewrap on Linux), with `.git`, `.muse` and `.agents` read-only and shell commands refused if containment can't be confirmed", "Network access is proxy-only by default, and the first connection to each new host, port or protocol stops for review", "`muse exec --json` streams JSONL events, with exit codes 0, 1, 2, 130 and 143 documented and `--max-model-steps` to cap a run", "A versioned session protocol (`muse serve`, `muse schema`) with MIT-licensed TypeScript and Python SDKs released in step with the CLI", "MCP over stdio and streamable HTTP with OAuth 2.1 sign-in, and named toolsets that select MCP tools by name or prefix" ], "weaknesses": [ "Closed source, with no public CI or issue tracker for the CLI found and release notes that carry no dates", "Subscriptions default to Contributor mode, which lets Meta train on prompts, code and responses until it's turned off", "No free route. Plans run from $5 to $200 a month, and pay-as-you-go billing needs a card", "Sandbox and trust flaws fixed in 1.4.10 to 1.4.13 were described only in release notes, with no advisory", "MCP tools run outside the sandbox, and telemetry is on with no page saying what it sends" ], "agentNotes": [ "Set `META_API_KEY` for 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 exec` returns 0 when the turn completes even if tests still fail", "Pass `--max-model-steps` on unattended runs so a stuck task can't loop", "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", "Turn Contributor mode off in `/settings` before a subscription session touches private code" ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 4, "avgRating": 3.3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 56.2 } ], "editorialScores": { "ergonomics": 79, "maintenance": 75, "payments": 20, "reliability": 45, "schema": 84, "security": 67, "transparency": 46 }, "provenanceScore": 65, "checked": { "categories": { "ergonomics": "2026-11-02", "maintenance": "2026-11-02", "payments": "2026-11-02", "reliability": "2026-11-02", "schema": "2026-11-02", "security": "2026-11-02", "transparency": "2026-11-02" }, "last": "2026-11-02", "lastMoved": "2026-11-02", "oldest": "2026-11-02", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "curl -fsSL https://dev.meta.ai/install.sh | sh # Windows: irm https://dev.meta.ai/install.ps1 | iex", "headless": { "env": { "META_API_KEY": "\u003cyour-key\u003e" }, "run": "muse exec --json \"Refactor the auth module and run the tests.\"" } }, "letme": { "capability": "https://letme.dev/agent.harness", "tool": "https://letme.dev/muse-code" }, "sameCompany": [ "meta-model-api", "muse-spark-open", "muse-glimmer-30b" ], "area": "frameworks", "unitPrices": [ { "item": "Everyday Usage plan", "unit": "month", "usd": 5, "note": "10 to 50 prompts every 5 hours." }, { "item": "High Usage plan", "unit": "month", "usd": 15, "note": "5x the Everyday Usage plan." }, { "item": "Power Usage plan", "unit": "month", "usd": 50, "note": "20x the Everyday Usage plan, with Muse Wonder Full." }, { "item": "Maximum Usage plan", "unit": "month", "usd": 200, "note": "80x the Everyday Usage plan, with Muse Wonder Full." } ], "provenance": { "legalEntity": "Meta Platforms, Inc.", "domain": "meta.ai", "domainRegistered": "2017-12-16", "endpointOnVendorDomain": null, "terms": "https://dev.meta.ai/legal/terms-of-service", "privacy": "https://www.facebook.com/privacy/policy/", "statusPage": "", "changelog": "https://dev.meta.ai/docs/muse-code/changelog", "securityTxt": "none", "checked": "2026-11-02", "notes": [ "The Meta Model API Terms of Service (last updated 9 October 2026) cover an artificial intelligence coding harness and name Meta Platforms, Inc., or Meta Platforms Ireland Limited in the European Region. The subscription page adds the Meta Subscription Terms of Service.", "The privacy field is the Meta Privacy Policy, which the terms link. www.facebook.com's robots.txt asks readers like ours not to fetch it, as the 8 October policy reading records, so it wasn't read.", "RDAP for meta.ai gives a registration date of 16 December 2017. The model calls go to api.meta.ai, and the binaries download from lookaside.facebook.com.", "No status page for Meta Model API was found. dev.meta.ai/status redirects to the home page.", "dev.meta.ai/code and developer.meta.com/ai/products/muse-code redirect to dev.meta.ai/products/muse-code.", "dev.meta.ai/.well-known/security.txt returns 404 on 2 November 2026. The SDK repository's SECURITY.md sends vulnerability reports to bugbounty.meta.com, whose robots.txt disallows our reader.", "api.meta.ai, which serves the release channel and the launcher, disallows every path in robots.txt, so the 12 October manifest reading is struck." ], "score": 65 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/muse-code.json", "live": { "slug": "muse-code", "versions": [ { "registry": "npm", "name": "@muse-code/sdk", "version": "1.4.14", "seenAt": "2026-11-06T23:47:52.9194391Z" }, { "registry": "pypi", "name": "muse-code-sdk", "version": "1.4.14", "released": "2026-10-27", "seenAt": "2026-11-06T23:47:53.753879721Z" } ], "githubStars": 85, "npmWeekly": 460027, "pypiWeekly": 158, "securityTxt": { "url": "https://meta.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:02:03.890144289Z" }, "llmsTxt": { "url": "https://dev.meta.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:33:15.319287368Z" }, "domain": { "domain": "meta.ai", "registered": "2017-12-16", "source": "https://rdap.identitydigital.services/rdap/domain/meta.ai", "checkedAt": "2026-11-01T14:15:25.518716318Z" }, "pages": [ { "url": "https://dev.meta.ai/docs/muse-code/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:02:42.372587233Z", "changedAt": "2026-11-07T14:02:42.372587233Z", "fingerprint": "8dde1d70b75c" } ], "github": { "repo": "meta-models/muse-code-sdk", "checkedAt": "2026-11-02T09:05:21.144468378Z", "stars": 81, "archived": false, "issuesEnabled": true, "pushedAt": "2026-11-02T06:26:54Z", "openIssues": 78, "openPRs": 5, "issuesOpened90d": 99, "issuesClosed90d": 21, "prsMerged90d": 17, "replies": { "sampled": 25, "unanswered": 22, "medianDays": 1 } }, "updatedAt": "2026-11-07T16:02:03.890144289Z" } }, "answer": "Traycer and Muse Code score within a point of each other on agent readiness, 57 (C) and 56.2 (C). Muse Code leads on schema \u0026 documentation, agent ergonomics and security \u0026 auth.", "b": { "slug": "traycer", "name": "Traycer", "vendor": "Traycer AI", "vendorUrl": "https://traycer.ai", "kind": "harness", "category": "agent-harnesses", "summary": "Traycer is an open-source orchestration app that runs coding agents you already pay for, or its own inference, in parallel with shared context across models, agent-to-agent messaging, shareable boards and cross-device sync.", "url": "https://www.anchorterminal.com/tools/traycer", "markdownUrl": "https://www.anchorterminal.com/tools/traycer.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/traycer.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/traycer.json", "dns": "traycer.grade.anchorterminal.com", "repo": "https://github.com/traycerai/traycer", "license": "MIT", "transports": [], "packages": [], "auth": "none", "pricing": "free", "pricingNotes": "Free and open source. You pay for the coding agents it runs, through your own subscriptions or API keys (checked 2026-11-07).", "priceSummary": "Free · OSS", "where": "local", "x402": { "level": "no", "evidence": "No payment protocol in the repository or README (checked 2026-11-07).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-11-07" }, "docsUrl": "https://docs.traycer.ai", "capabilities": [ "agent.harness", "agent.multi-agent" ], "tags": [ "open-source", "mit", "desktop-app", "cli", "telemetry", "new" ], "lastRelease": "2026-11-06", "graded": true, "anchor": { "graded": true, "score": 57, "grade": "C", "agentReady": false, "rank": 811, "ranked": true, "rankOf": 1486, "categoryRank": 29, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 65, "maintenance": 75, "payments": 30, "reliability": 65, "schema": 65, "security": 42, "transparency": 60 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "low", "date": "2026-11-07" }, "negative": 0, "verdict": "An open-source app for running several coding agents together with shared context, agent-to-agent messaging and team boards, on every desktop OS. Privacy Mode is opt-in for individuals, and the README says Sentry and PostHog may be on in release builds.", "bestFor": "Teams who want several coding agents working together with shared context and boards.", "strengths": [ "Runs agents you already pay for, or Traycer's own inference", "Shares context across models and lets agents message each other", "macOS, Linux and Windows builds, with package-manager installs", "MIT, with CodeQL, Scorecard and secret scanning" ], "weaknesses": [ "Privacy Mode is opt-in for individuals; with it off, prompts may be logged", "Sentry and PostHog may be enabled in release builds, with no opt-out in the README", "Inference subscription price not found on the pages read" ], "agentNotes": [ "Turn on Privacy Mode if you're an individual user and don't want prompts logged", "CLI agents you configure send requests straight to their provider; Traycer's own inference goes through Traycer" ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "low", "grade": "C", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 57 } ], "editorialScores": { "ergonomics": 65, "maintenance": 75, "payments": 30, "reliability": 65, "schema": 65, "security": 42, "transparency": 66 }, "provenanceScore": 53, "checked": { "categories": { "ergonomics": "2026-11-07", "maintenance": "2026-11-07", "payments": "2026-11-07", "reliability": "2026-11-07", "schema": "2026-11-07", "security": "2026-11-07", "transparency": "2026-11-07" }, "last": "2026-11-07", "oldest": "2026-11-07", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "Download for macOS, Linux or Windows from the releases page" }, "letme": { "capability": "https://letme.dev/agent.harness", "tool": "https://letme.dev/traycer" }, "area": "frameworks", "provenance": { "legalEntity": "Traycer AI", "domain": "traycer.ai", "domainRegistered": "", "domainNote": "Not looked up: RDAP isn't requested under the 1 November 2026 rules.", "endpointOnVendorDomain": null, "terms": "", "privacy": "", "statusPage": "", "changelog": "https://github.com/traycerai/traycer/blob/main/CHANGELOG.md", "securityTxt": "none", "checked": "2026-11-07", "notes": [ "The licence names Traycer AI. The repository is github.com/traycerai/traycer." ], "score": 53 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/traycer.json", "live": { "slug": "traycer", "securityTxt": { "url": "https://traycer.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T15:59:47.880384121Z" }, "pages": [ { "url": "https://raw.githubusercontent.com/traycerai/traycer/main/CHANGELOG.md", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:23:51.024738302Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d3f389f721e9" } ], "updatedAt": "2026-11-07T15:59:47.880384121Z" } }, "edges": [ { "by": 25, "category": "security", "leads": "muse-code", "name": "Security \u0026 auth", "reasons": { "a": "Framework reading (telemetry defaults, approvals, guardrails, sandboxing), five lines. A browser session or a Model API key, cleared by `muse logout`. Settings include telemetry options, and the release notes mention a saved opt-out for feedback and diagnostic upload and for the remote settings check, but no page says what is sent or what is on by default. Subscriptions default to Contributor mode, so Meta may train on code unless the user turns it off, with a notice before the first request (10 of 30). Ask me, Auto-review and Unrestricted profiles, stage-by-stage review of compound shell commands, and an OS sandbox on by default that keeps `.git`, `.muse` and `.agents` read-only and refuses to run when it can't confirm containment. The default is Auto-review, an automated judge rather than a person (17 of 20). Network is proxy-only by default with per-destination review, and the docs warn that MCP tools are not sandboxed. The 1.4.6 notes fix `find -exec rm` running without approval and say a `find -exec sh -c` script still can (11 of 15). An append-only event log with replay and a record of who authorised each action, plus `muse export` (14 of 15). Meta's bug bounty, named in the SDK's SECURITY.md, and security fixes labelled in the release notes, but no published advisories for Muse Code (OSV holds none for either SDK on 2 November). The 12 October reading of www.facebook.com's security.txt is struck (that host's robots.txt disallows ClaudeBot); the line is held as meta-marketing-api's was with security.txt unread (15 of 20). 10 + 17 + 11 + 14 + 15 = 67. Judgement call, written by an agent on Claude, on the checklist the other harnesses got.", "b": "Harness reading. Code is processed in memory and not used for training, but Privacy Mode is opt-in for individuals, prompts may be logged with it off, and Sentry and PostHog 'may be enabled in release builds' (10 of 30). No approval model described in the README (8 of 20). No prompt-injection guidance (5). No audit log found (5). SECURITY.md, CodeQL, Scorecard and secret scanning (14 of 20). 10 + 8 + 5 + 5 + 14 = 42." }, "scores": { "a": 67, "b": 42 } }, { "by": 20, "category": "reliability", "leads": "traycer", "name": "Reliability", "reasons": { "a": "Local-package reading. Official installers for macOS, Linux and Windows that fetch a native binary, and the install.sh script checks the launcher's SHA-256 against the advertised sum (20). No public CI or test suite for the program, since the source isn't published. The SDK repository's workflows only publish to npm, PyPI and crates.io, by hand (0). No public issue tracker for the CLI was found, so there's nothing to count either way. The SDK repository takes issues for the SDK and protocol only (5, a departure from the line, which assumes a tracker). Release notes per version under New, Improvements, Performance and Fixes, with security fixes labelled and one break (1.4.8's profile refusal) announced in the 1.4.6 notes, but no dates and no breaking-change heading (5). 1.4.13 (15). Same reading as Claude Code, which is also closed source. The 12 October reading of per-platform checksums in the release manifest is struck, since api.meta.ai's robots.txt now disallows every path. 20 + 0 + 5 + 5 + 15 = 45.", "b": "Local software. Builds for macOS, Linux and Windows, and package-manager publishing workflows (20). test.yml, CodeQL, OpenSSF Scorecard and secret scanning run on the repository; pass state not read (15). GitHub issues and pull requests weren't read (GitHub's pages refuse these sessions), so that line is scored absent (0). CHANGELOG.md (15). Host 1.5.3 (15). 20 + 15 + 0 + 15 + 15 = 65." }, "scores": { "a": 45, "b": 65 } }, { "by": 19, "category": "schema", "leads": "muse-code", "name": "Schema \u0026 documentation", "reasons": { "a": "Framework reading. `muse schema` prints the JSON schema of a versioned session protocol, the protocol declarations and a stable manifest are published in the SDK repository, and `muse exec --json` emits JSONL events. No JSON Schema for `settings.json` was found (22 of 25). llms.txt at dev.meta.ai/llms.txt with a Markdown copy of each page (10). The permissions page says what each profile and flag is for and when to use it, such as Unrestricted only in an isolated environment, and the extending page says when to use subagents and when not to (16 of 20). Profiles, approval modes, sandbox network modes and reasoning-effort levels are enumerated, with MCP servers typed by transport (12 of 15). Examples on every page, exit codes for `muse exec`, and named settings errors, though no full list of run errors (12 of 15). A changelog for every version to 1.4.13, with no dates (12 of 15). 22 + 10 + 16 + 12 + 12 + 12 = 84.", "b": "Harness reading. Mintlify docs, a protocol package and a CLI (65)." }, "scores": { "a": 84, "b": 65 } }, { "by": 14, "category": "ergonomics", "leads": "muse-code", "name": "Agent ergonomics", "reasons": { "a": "Framework reading, adapted to a harness driven by a pipeline. `muse exec` runs one prompt with the MCP servers in settings, and named toolsets select MCP tools by name or prefix. We found no deferred tool loading in Muse Code's own docs (18 of 25). `--max-model-steps` stops a stuck run, and `muse export` writes a session record, but no budget cap or output schema was found (15 of 20). Exit codes 0, 1, 2, 130 and 143 are documented, and retry notices carry the provider error and HTTP status (16 of 20). `--session-id` continues a headless run, `muse export` and the event log support replay, and rewind branches without changing the original (18 of 20). TypeScript and Python SDKs. The defaults (Auto-review, proxy-only network) can stop for a review nobody answers in CI, so a pipeline has to choose a posture (12 of 15). 18 + 15 + 16 + 18 + 12 = 79.", "b": "Harness reading. Model switching within an agent, agent-to-agent loops, a CLI and cross-device sync (65)." }, "scores": { "a": 79, "b": 65 } }, { "by": 10, "category": "payments", "leads": "traycer", "name": "Payments \u0026 pricing", "reasons": { "a": "Harness reading of the published rubric. No payment protocol (0). Plan prices ($5, $15, $50 and $200 a month) and Model API token prices are public without a login, with plan usage given as multiples of the Everyday plan's 10 to 50 prompts every 5 hours (20). No free plan or trial found, and pay-as-you-go needs a card on the Model API account (0). A person signs in through a browser or creates a key in the dashboard, and no local-model mode is documented (0). 0 + 20 + 0 + 0 = 20.", "b": "Scored on the paid option, Traycer's own inference subscription, whose price wasn't read (0 of 20). No protocol (0). Bring-your-own-agent use is free (20). Accounts for sync and teams weren't checked, half (10). 0 + 0 + 20 + 10 = 30." }, "scores": { "a": 20, "b": 30 } } ], "facts": [ { "a": "Agent harness", "b": "Agent harness", "name": "Kind" }, { "a": "Meta", "b": "Traycer AI", "name": "Vendor" }, { "a": "no (local only)", "b": "no (local only)", "name": "Hosted endpoint" }, { "a": "", "b": "", "name": "Transports" }, { "a": "OAuth or key", "b": "None", "name": "Auth" }, { "a": "Paid", "b": "Free", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "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.", "b": "MIT", "name": "Licence" }, { "a": "yes", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "no", "name": "llms.txt" }, { "a": "2026-10-24", "b": "2026-11-06", "name": "Last release" }, { "a": "2026-10-02", "b": "no document linked", "name": "Terms last updated" }, { "a": "couldn't be read", "b": "no document linked", "name": "Privacy policy last updated" }, { "a": "yes", "b": "not read yet", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "not read yet", "name": "Terms restrict automated access" }, { "a": "yes", "b": "not read yet", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "not read yet", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "not read yet", "name": "Arbitration or class-action waiver" }, { "a": "63k npm/wk", "b": "none", "name": "Popularity" }, { "a": "3.3/5 (4)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Traycer and Muse Code score within a point of each other on agent readiness, 57 (C) and 56.2 (C). Muse Code leads on schema \u0026 documentation, agent ergonomics and security \u0026 auth.", "question": "Which is better for AI agents, Muse Code or Traycer?" }, { "answer": "No open-source release is listed for Muse Code. Traycer is open source (MIT).", "question": "Are Muse Code and Traycer open source?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 84 against 65", "Agent ergonomics, 79 against 65", "Security \u0026 auth, 67 against 42" ], "also": null, "goodFor": "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.", "slug": "muse-code", "watchFor": "Closed source, with no public CI or issue tracker for the CLI found and release notes that carry no dates" }, { "aheadOn": [ "Reliability, 65 against 45", "Payments \u0026 pricing, 30 against 20" ], "also": [ "No key needed to call it", "Open source", "No incidents deducted, where Muse Code loses 5 points for them" ], "goodFor": "Teams who want several coding agents working together with shared context and boards.", "slug": "traycer", "watchFor": "Privacy Mode is opt-in for individuals; with it off, prompts may be logged" } ], "history": { "muse-code": [ { "causes": [ "correction" ], "date": "2026-11-02", "delta": -5, "from": 61.2, "fromGrade": "C", "to": 56.2, "toGrade": "C" }, { "causes": [ "method" ], "date": "2026-10-30", "delta": -0.2, "from": 61.4, "fromGrade": "C", "to": 61.2, "toGrade": "C" }, { "causes": [ "method" ], "date": "2026-10-27", "delta": 0.1, "from": 61.3, "fromGrade": "C", "to": 61.4, "toGrade": "C" } ], "traycer": null }, "job": { "capability": "agent.harness", "name": "Agent harnesses" }, "others": [ { "json": "https://www.anchorterminal.com/compare/agent-zero-vs-muse-code.json", "title": "Agent Zero vs Muse Code", "url": "https://www.anchorterminal.com/compare/agent-zero-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/agent-zero-vs-traycer.json", "title": "Agent Zero vs Traycer", "url": "https://www.anchorterminal.com/compare/agent-zero-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/aider-vs-muse-code.json", "title": "Aider vs Muse Code", "url": 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Traycer", "url": "https://www.anchorterminal.com/compare/claude-code-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/cline-vs-muse-code.json", "title": "Cline vs Muse Code", "url": "https://www.anchorterminal.com/compare/cline-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/cline-vs-traycer.json", "title": "Cline vs Traycer", "url": "https://www.anchorterminal.com/compare/cline-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/conductor-vs-muse-code.json", "title": "Conductor vs Muse Code", "url": "https://www.anchorterminal.com/compare/conductor-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/conductor-vs-traycer.json", "title": "Conductor vs Traycer", "url": "https://www.anchorterminal.com/compare/conductor-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/crush-vs-muse-code.json", "title": "Crush vs Muse Code", "url": "https://www.anchorterminal.com/compare/crush-vs-muse-code" }, { "json": 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Muse Code", "url": "https://www.anchorterminal.com/compare/gemini-cli-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/gemini-cli-vs-traycer.json", "title": "Gemini CLI vs Traycer", "url": "https://www.anchorterminal.com/compare/gemini-cli-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-muse-code.json", "title": "GitHub Copilot CLI vs Muse Code", "url": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-traycer.json", "title": "GitHub Copilot CLI vs Traycer", "url": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/goose-vs-muse-code.json", "title": "goose vs Muse Code", "url": "https://www.anchorterminal.com/compare/goose-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/goose-vs-traycer.json", "title": "goose vs Traycer", "url": "https://www.anchorterminal.com/compare/goose-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-muse-code.json", "title": "Harness² vs Muse Code", "url": "https://www.anchorterminal.com/compare/harness2-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-traycer.json", "title": "Harness² vs Traycer", "url": "https://www.anchorterminal.com/compare/harness2-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/harnessrouter-vs-muse-code.json", "title": "HarnessRouter vs Muse Code", "url": "https://www.anchorterminal.com/compare/harnessrouter-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/harnessrouter-vs-traycer.json", "title": "HarnessRouter vs Traycer", "url": "https://www.anchorterminal.com/compare/harnessrouter-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/jules-vs-muse-code.json", "title": "Jules vs Muse Code", "url": "https://www.anchorterminal.com/compare/jules-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/jules-vs-traycer.json", "title": "Jules vs Traycer", "url": "https://www.anchorterminal.com/compare/jules-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-muse-code.json", "title": "Junie CLI vs Muse Code", "url": "https://www.anchorterminal.com/compare/junie-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-traycer.json", "title": "Junie CLI vs Traycer", "url": "https://www.anchorterminal.com/compare/junie-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/kilo-code-cli-vs-muse-code.json", "title": "Kilo Code CLI vs Muse Code", "url": "https://www.anchorterminal.com/compare/kilo-code-cli-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/kilo-code-cli-vs-traycer.json", "title": "Kilo Code CLI vs Traycer", "url": "https://www.anchorterminal.com/compare/kilo-code-cli-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/kimi-code-cli-vs-muse-code.json", "title": "Kimi Code CLI vs Muse Code", "url": "https://www.anchorterminal.com/compare/kimi-code-cli-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/kimi-code-cli-vs-traycer.json", "title": "Kimi Code CLI vs Traycer", "url": "https://www.anchorterminal.com/compare/kimi-code-cli-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/kiro-cli-vs-muse-code.json", "title": "Kiro CLI vs Muse Code", "url": "https://www.anchorterminal.com/compare/kiro-cli-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/kiro-cli-vs-traycer.json", "title": "Kiro CLI vs Traycer", "url": "https://www.anchorterminal.com/compare/kiro-cli-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/letta-vs-muse-code.json", "title": "Letta vs Muse Code", "url": "https://www.anchorterminal.com/compare/letta-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/letta-vs-traycer.json", "title": "Letta vs Traycer", "url": "https://www.anchorterminal.com/compare/letta-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/mini-swe-agent-vs-muse-code.json", "title": "mini-swe-agent vs Muse Code", "url": "https://www.anchorterminal.com/compare/mini-swe-agent-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/mini-swe-agent-vs-traycer.json", "title": "mini-swe-agent vs Traycer", "url": "https://www.anchorterminal.com/compare/mini-swe-agent-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/minimax-code-vs-muse-code.json", "title": "MiniMax Code vs Muse Code", "url": "https://www.anchorterminal.com/compare/minimax-code-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/minimax-code-vs-traycer.json", "title": "MiniMax Code vs Traycer", "url": "https://www.anchorterminal.com/compare/minimax-code-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-muse-code.json", "title": "Mistral Vibe CLI vs Muse Code", "url": "https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-traycer.json", "title": "Mistral Vibe CLI vs Traycer", "url": "https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-openai-agents-api.json", "title": "Muse Code vs OpenAI Agents API", "url": "https://www.anchorterminal.com/compare/muse-code-vs-openai-agents-api" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-openai-codex.json", "title": "Muse Code vs OpenAI Codex", "url": "https://www.anchorterminal.com/compare/muse-code-vs-openai-codex" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-opencode.json", "title": "Muse Code vs OpenCode", "url": "https://www.anchorterminal.com/compare/muse-code-vs-opencode" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-openhands.json", "title": "Muse Code vs OpenHands", "url": "https://www.anchorterminal.com/compare/muse-code-vs-openhands" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-openmausbot.json", "title": "Muse Code vs OpenMausBot", "url": "https://www.anchorterminal.com/compare/muse-code-vs-openmausbot" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-orca.json", "title": "Muse Code vs Orca", "url": "https://www.anchorterminal.com/compare/muse-code-vs-orca" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-paseo.json", "title": "Muse Code vs Paseo", "url": "https://www.anchorterminal.com/compare/muse-code-vs-paseo" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-prime-agent.json", "title": "Muse Code vs Prime Agent", "url": "https://www.anchorterminal.com/compare/muse-code-vs-prime-agent" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-qoder-cli.json", "title": "Muse Code vs Qoder CLI", "url": "https://www.anchorterminal.com/compare/muse-code-vs-qoder-cli" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-qwen-code.json", "title": "Muse Code vs Qwen Code", "url": "https://www.anchorterminal.com/compare/muse-code-vs-qwen-code" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-reflection-mirror.json", "title": "Muse Code vs Mirror CLI", "url": "https://www.anchorterminal.com/compare/muse-code-vs-reflection-mirror" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-rovo-dev-cli.json", "title": "Muse Code vs Rovo Dev CLI", "url": "https://www.anchorterminal.com/compare/muse-code-vs-rovo-dev-cli" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-sculptor.json", "title": "Muse Code vs Sculptor", "url": "https://www.anchorterminal.com/compare/muse-code-vs-sculptor" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-t3-code.json", "title": "Muse Code vs T3 Code", "url": "https://www.anchorterminal.com/compare/muse-code-vs-t3-code" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-unstoppable.json", "title": "Muse Code vs Unstoppable", "url": "https://www.anchorterminal.com/compare/muse-code-vs-unstoppable" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-verdent.json", "title": "Muse Code vs Verdent", "url": "https://www.anchorterminal.com/compare/muse-code-vs-verdent" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-vibe-trading.json", "title": "Muse Code vs Vibe-Trading", "url": "https://www.anchorterminal.com/compare/muse-code-vs-vibe-trading" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-warp.json", "title": "Muse Code vs Warp (Warp Agent CLI and the Oz Agent API)", "url": "https://www.anchorterminal.com/compare/muse-code-vs-warp" }, { "json": "https://www.anchorterminal.com/compare/openai-agents-api-vs-traycer.json", "title": "OpenAI Agents API vs Traycer", "url": "https://www.anchorterminal.com/compare/openai-agents-api-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/openai-codex-vs-traycer.json", "title": "OpenAI Codex vs Traycer", "url": "https://www.anchorterminal.com/compare/openai-codex-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/opencode-vs-traycer.json", "title": "OpenCode vs Traycer", "url": "https://www.anchorterminal.com/compare/opencode-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-traycer.json", "title": "OpenHands vs Traycer", "url": "https://www.anchorterminal.com/compare/openhands-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/orca-vs-traycer.json", "title": "Orca vs Traycer", "url": "https://www.anchorterminal.com/compare/orca-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/paseo-vs-traycer.json", "title": "Paseo vs Traycer", "url": "https://www.anchorterminal.com/compare/paseo-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/prime-agent-vs-traycer.json", "title": "Prime Agent vs Traycer", "url": "https://www.anchorterminal.com/compare/prime-agent-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/qoder-cli-vs-traycer.json", "title": "Qoder CLI vs Traycer", "url": "https://www.anchorterminal.com/compare/qoder-cli-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/qwen-code-vs-traycer.json", "title": "Qwen Code vs Traycer", "url": "https://www.anchorterminal.com/compare/qwen-code-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/reflection-mirror-vs-traycer.json", "title": "Mirror CLI vs Traycer", "url": "https://www.anchorterminal.com/compare/reflection-mirror-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/rovo-dev-cli-vs-traycer.json", "title": "Rovo Dev CLI vs Traycer", "url": "https://www.anchorterminal.com/compare/rovo-dev-cli-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/sculptor-vs-traycer.json", "title": "Sculptor vs Traycer", "url": "https://www.anchorterminal.com/compare/sculptor-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/t3-code-vs-traycer.json", "title": "T3 Code vs Traycer", "url": "https://www.anchorterminal.com/compare/t3-code-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/traycer-vs-unstoppable.json", "title": "Traycer vs Unstoppable", "url": "https://www.anchorterminal.com/compare/traycer-vs-unstoppable" }, { "json": "https://www.anchorterminal.com/compare/traycer-vs-verdent.json", "title": "Traycer vs Verdent", "url": "https://www.anchorterminal.com/compare/traycer-vs-verdent" }, { "json": "https://www.anchorterminal.com/compare/traycer-vs-vibe-trading.json", "title": "Traycer vs Vibe-Trading", "url": "https://www.anchorterminal.com/compare/traycer-vs-vibe-trading" }, { "json": "https://www.anchorterminal.com/compare/traycer-vs-warp.json", "title": "Traycer vs Warp (Warp Agent CLI and the Oz Agent API)", "url": "https://www.anchorterminal.com/compare/traycer-vs-warp" }, { "json": "https://www.anchorterminal.com/compare/clawboo-vs-muse-code.json", "title": "Clawboo vs Muse Code", "url": "https://www.anchorterminal.com/compare/clawboo-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/clawboo-vs-traycer.json", "title": "Clawboo vs Traycer", "url": "https://www.anchorterminal.com/compare/clawboo-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/cli-manager-vs-muse-code.json", "title": "CLI Manager vs Muse Code", "url": "https://www.anchorterminal.com/compare/cli-manager-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/cli-manager-vs-traycer.json", "title": "CLI Manager vs Traycer", "url": "https://www.anchorterminal.com/compare/cli-manager-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/harness-autonomous-vs-muse-code.json", "title": "Harness vs Muse Code", "url": "https://www.anchorterminal.com/compare/harness-autonomous-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/harness-autonomous-vs-traycer.json", "title": "Harness vs Traycer", "url": "https://www.anchorterminal.com/compare/harness-autonomous-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-paperclip.json", "title": "Muse Code vs Paperclip", "url": "https://www.anchorterminal.com/compare/muse-code-vs-paperclip" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-parallax-agents.json", "title": "Muse Code vs Parallax", "url": "https://www.anchorterminal.com/compare/muse-code-vs-parallax-agents" }, { "json": "https://www.anchorterminal.com/compare/openmausbot-vs-traycer.json", "title": "OpenMausBot vs Traycer", "url": "https://www.anchorterminal.com/compare/openmausbot-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/paperclip-vs-traycer.json", "title": "Paperclip vs Traycer", "url": "https://www.anchorterminal.com/compare/paperclip-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/parallax-agents-vs-traycer.json", "title": "Parallax vs Traycer", "url": "https://www.anchorterminal.com/compare/parallax-agents-vs-traycer" } ], "panel": null, "scores": [ { "by": 20, "edge": "traycer", "key": "reliability", "muse-code": 45, "name": "Reliability", "traycer": 65, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 19, "edge": "muse-code", "key": "schema", "muse-code": 84, "name": "Schema \u0026 documentation", "traycer": 65, "weight": 13 }, { "by": 14, "edge": "muse-code", "key": "ergonomics", "muse-code": 79, "name": "Agent ergonomics", "traycer": 65, "weight": 13 }, { "by": 25, "edge": "muse-code", "key": "security", "muse-code": 67, "name": "Security \u0026 auth", "traycer": 42, "weight": 14 }, { "by": 10, "edge": "traycer", "key": "payments", "muse-code": 20, "name": "Payments \u0026 pricing", "traycer": 30, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 0, "edge": "", "key": "maintenance", "muse-code": 75, "name": "Maintenance \u0026 community", "traycer": 75, "weight": 7 }, { "by": 4, "edge": "traycer", "key": "transparency", "muse-code": 56, "name": "Transparency \u0026 trust", "traycer": 60, "weight": 7 } ], "summary": "Traycer and Muse Code score within a point of each other on agent readiness, 57 (C) and 56.2 (C). Muse Code leads on schema \u0026 documentation, agent ergonomics and security \u0026 auth. Both do agent harnesses.", "tasks": null, "tutorials": [], "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 ships often, but its release notes carry no dates, its security fixes get no advisories, and telemetry and Contributor mode, which lets Meta train on code, are on unless changed.", "traycer": "An open-source app for running several coding agents together with shared context, agent-to-agent messaging and team boards, on every desktop OS. Privacy Mode is opt-in for individuals, and the README says Sentry and PostHog may be on in release builds." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/muse-code-vs-traycer", "json": "https://www.anchorterminal.com/compare/muse-code-vs-traycer.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/muse-code-vs-traycer.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/muse-code-vs-traycer.min.md" }, "markdown": "Traycer and Muse Code score within a point of each other on agent readiness, 57 (C) and 56.2 (C). Muse Code leads on schema \u0026 documentation, agent ergonomics and security \u0026 auth. Both do agent harnesses.\n\n- Muse Code: grade C, 56.2/100, rank #833 of 1486. Markdown https://www.anchorterminal.com/tools/muse-code.md · JSON https://www.anchorterminal.com/api/v1/tools/muse-code.json\n- Traycer: grade C, 57/100, rank #811 of 1486. Markdown https://www.anchorterminal.com/tools/traycer.md · JSON https://www.anchorterminal.com/api/v1/tools/traycer.json\n- Best agent harnesses and coding agents: https://www.anchorterminal.com/best/agent-harnesses/index.md\n- All 1500 harnesses comparisons: https://www.anchorterminal.com/compare/agent-harnesses/index.md\n\n## Which one, for what\n\n### Muse Code (C)\n\nGood 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.\n\nAhead on:\n- Schema \u0026 documentation, 84 against 65\n- Agent ergonomics, 79 against 65\n- Security \u0026 auth, 67 against 42\n\nWatch for: Closed source, with no public CI or issue tracker for the CLI found and release notes that carry no dates\n\n### Traycer (C)\n\nGood for: Teams who want several coding agents working together with shared context and boards.\n\nAhead on:\n- Reliability, 65 against 45\n- Payments \u0026 pricing, 30 against 20\n\nAlso in its favour:\n- No key needed to call it\n- Open source\n- No incidents deducted, where Muse Code loses 5 points for them\n\nWatch for: Privacy Mode is opt-in for individuals; with it off, prompts may be logged\n\n\n## Why the edge\n\n### Security \u0026 auth: Muse Code +25\n\n- Muse Code (67): Framework reading (telemetry defaults, approvals, guardrails, sandboxing), five lines. A browser session or a Model API key, cleared by `muse logout`. Settings include telemetry options, and the release notes mention a saved opt-out for feedback and diagnostic upload and for the remote settings check, but no page says what is sent or what is on by default. Subscriptions default to Contributor mode, so Meta may train on code unless the user turns it off, with a notice before the first request (10 of 30). Ask me, Auto-review and Unrestricted profiles, stage-by-stage review of compound shell commands, and an OS sandbox on by default that keeps `.git`, `.muse` and `.agents` read-only and refuses to run when it can't confirm containment. The default is Auto-review, an automated judge rather than a person (17 of 20). Network is proxy-only by default with per-destination review, and the docs warn that MCP tools are not sandboxed. The 1.4.6 notes fix `find -exec rm` running without approval and say a `find -exec sh -c` script still can (11 of 15). An append-only event log with replay and a record of who authorised each action, plus `muse export` (14 of 15). Meta's bug bounty, named in the SDK's SECURITY.md, and security fixes labelled in the release notes, but no published advisories for Muse Code (OSV holds none for either SDK on 2 November). The 12 October reading of www.facebook.com's security.txt is struck (that host's robots.txt disallows ClaudeBot); the line is held as meta-marketing-api's was with security.txt unread (15 of 20). 10 + 17 + 11 + 14 + 15 = 67. Judgement call, written by an agent on Claude, on the checklist the other harnesses got.\n- Traycer (42): Harness reading. Code is processed in memory and not used for training, but Privacy Mode is opt-in for individuals, prompts may be logged with it off, and Sentry and PostHog 'may be enabled in release builds' (10 of 30). No approval model described in the README (8 of 20). No prompt-injection guidance (5). No audit log found (5). SECURITY.md, CodeQL, Scorecard and secret scanning (14 of 20). 10 + 8 + 5 + 5 + 14 = 42.\n\n### Reliability: Traycer +20\n\n- Muse Code (45): Local-package reading. Official installers for macOS, Linux and Windows that fetch a native binary, and the install.sh script checks the launcher's SHA-256 against the advertised sum (20). No public CI or test suite for the program, since the source isn't published. The SDK repository's workflows only publish to npm, PyPI and crates.io, by hand (0). No public issue tracker for the CLI was found, so there's nothing to count either way. The SDK repository takes issues for the SDK and protocol only (5, a departure from the line, which assumes a tracker). Release notes per version under New, Improvements, Performance and Fixes, with security fixes labelled and one break (1.4.8's profile refusal) announced in the 1.4.6 notes, but no dates and no breaking-change heading (5). 1.4.13 (15). Same reading as Claude Code, which is also closed source. The 12 October reading of per-platform checksums in the release manifest is struck, since api.meta.ai's robots.txt now disallows every path. 20 + 0 + 5 + 5 + 15 = 45.\n- Traycer (65): Local software. Builds for macOS, Linux and Windows, and package-manager publishing workflows (20). test.yml, CodeQL, OpenSSF Scorecard and secret scanning run on the repository; pass state not read (15). GitHub issues and pull requests weren't read (GitHub's pages refuse these sessions), so that line is scored absent (0). CHANGELOG.md (15). Host 1.5.3 (15). 20 + 15 + 0 + 15 + 15 = 65.\n\n### Schema \u0026 documentation: Muse Code +19\n\n- Muse Code (84): Framework reading. `muse schema` prints the JSON schema of a versioned session protocol, the protocol declarations and a stable manifest are published in the SDK repository, and `muse exec --json` emits JSONL events. No JSON Schema for `settings.json` was found (22 of 25). llms.txt at dev.meta.ai/llms.txt with a Markdown copy of each page (10). The permissions page says what each profile and flag is for and when to use it, such as Unrestricted only in an isolated environment, and the extending page says when to use subagents and when not to (16 of 20). Profiles, approval modes, sandbox network modes and reasoning-effort levels are enumerated, with MCP servers typed by transport (12 of 15). Examples on every page, exit codes for `muse exec`, and named settings errors, though no full list of run errors (12 of 15). A changelog for every version to 1.4.13, with no dates (12 of 15). 22 + 10 + 16 + 12 + 12 + 12 = 84.\n- Traycer (65): Harness reading. Mintlify docs, a protocol package and a CLI (65).\n\n### Agent ergonomics: Muse Code +14\n\n- Muse Code (79): Framework reading, adapted to a harness driven by a pipeline. `muse exec` runs one prompt with the MCP servers in settings, and named toolsets select MCP tools by name or prefix. We found no deferred tool loading in Muse Code's own docs (18 of 25). `--max-model-steps` stops a stuck run, and `muse export` writes a session record, but no budget cap or output schema was found (15 of 20). Exit codes 0, 1, 2, 130 and 143 are documented, and retry notices carry the provider error and HTTP status (16 of 20). `--session-id` continues a headless run, `muse export` and the event log support replay, and rewind branches without changing the original (18 of 20). TypeScript and Python SDKs. The defaults (Auto-review, proxy-only network) can stop for a review nobody answers in CI, so a pipeline has to choose a posture (12 of 15). 18 + 15 + 16 + 18 + 12 = 79.\n- Traycer (65): Harness reading. Model switching within an agent, agent-to-agent loops, a CLI and cross-device sync (65).\n\n### Payments \u0026 pricing: Traycer +10\n\n- Muse Code (20): Harness reading of the published rubric. No payment protocol (0). Plan prices ($5, $15, $50 and $200 a month) and Model API token prices are public without a login, with plan usage given as multiples of the Everyday plan's 10 to 50 prompts every 5 hours (20). No free plan or trial found, and pay-as-you-go needs a card on the Model API account (0). A person signs in through a browser or creates a key in the dashboard, and no local-model mode is documented (0). 0 + 20 + 0 + 0 = 20.\n- Traycer (30): Scored on the paid option, Traycer's own inference subscription, whose price wasn't read (0 of 20). No protocol (0). Bring-your-own-agent use is free (20). Accounts for sync and teams weren't checked, half (10). 0 + 0 + 20 + 10 = 30.\n\n## Score by category\n\n| Category | Weight | Muse Code | Traycer | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 45 | 65 | Traycer +20 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 84 | 65 | Muse Code +19 |\n| Agent ergonomics | 13% (16.2 this run) | 79 | 65 | Muse Code +14 |\n| Security \u0026 auth | 14% (17.5 this run) | 67 | 42 | Muse Code +25 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 30 | Traycer +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 75 | 75 | even |\n| Transparency \u0026 trust | 7% (8.8 this run) | 56 | 60 | Traycer +4 |\n| Negative events | ≤15 | -5 | 0 | |\n| **Total** | | **56.2 · C** | **57 · C** | |\n\n## Facts side by side\n\n| Fact | Muse Code | Traycer |\n| --- | --- | --- |\n| Kind | Agent harness | Agent harness |\n| Vendor | Meta | Traycer AI |\n| Hosted endpoint | no (local only) | no (local only) |\n| Transports | | |\n| Auth | OAuth or key | None |\n| Pricing | Paid | Free |\n| x402 | no | no |\n| 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. | MIT |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | no |\n| Last release | 2026-10-24 | 2026-11-06 |\n| Terms last updated | 2026-10-02 | no document linked |\n| Privacy policy last updated | couldn't be read | no document linked |\n| Customer content may train models | yes | not read yet |\n| Terms restrict automated access | not found in the text | not read yet |\n| Terms restrict benchmarking | yes | not read yet |\n| Terms or service can change without notice | not found in the text | not read yet |\n| Arbitration or class-action waiver | yes | not read yet |\n| Popularity | 63k npm/wk | none |\n| Agent reviews | 3.3/5 (4) | none |\n\n## How the scores have moved\n\n### Muse Code\n\n- -5.0 on 2 November 2026: correction\n- -0.2 on 30 October 2026: checklist\n- +0.1 on 27 October 2026: checklist\n\n### Traycer\n\nNo score change since it was listed.\n\n## Verdicts\n\n**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 ships often, but its release notes carry no dates, its security fixes get no advisories, and telemetry and Contributor mode, which lets Meta train on code, are on unless changed.\n\n**Traycer.** An open-source app for running several coding agents together with shared context, agent-to-agent messaging and team boards, on every desktop OS. Privacy Mode is opt-in for individuals, and the README says Sentry and PostHog may be on in release builds.\n\n## Before you call either\n\n### Muse Code\n\n1. Set `META_API_KEY` for headless runs. Browser sign-in isn't available in CI or for Meta Managed Accounts\n2. Gate on your own test command, not the exit code. `muse exec` returns 0 when the turn completes even if tests still fail\n3. Pass `--max-model-steps` on unattended runs so a stuck task can't loop\n4. 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\n5. Turn Contributor mode off in `/settings` before a subscription session touches private code\n\n### Traycer\n\n1. Turn on Privacy Mode if you're an individual user and don't want prompts logged\n2. CLI agents you configure send requests straight to their provider; Traycer's own inference goes through Traycer\n\n## Questions\n\n### Which is better for AI agents, Muse Code or Traycer?\n\nTraycer and Muse Code score within a point of each other on agent readiness, 57 (C) and 56.2 (C). Muse Code leads on schema \u0026 documentation, agent ergonomics and security \u0026 auth.\n\n### Are Muse Code and Traycer open source?\n\nNo open-source release is listed for Muse Code. Traycer is open source (MIT).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/muse-code-vs-traycer.json, and with the fewest tokens: https://www.anchorterminal.com/compare/muse-code-vs-traycer.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"muse-code\", \"b\": \"traycer\"}`. From a terminal: `anchor compare muse-code traycer`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/muse-code.json and https://www.anchorterminal.com/api/v1/tools/traycer.json\n\n## Other comparisons with Muse Code or Traycer\n\n- [Agent Zero vs Muse Code](https://www.anchorterminal.com/compare/agent-zero-vs-muse-code.md)\n- [Agent Zero vs Traycer](https://www.anchorterminal.com/compare/agent-zero-vs-traycer.md)\n- [Aider vs Muse Code](https://www.anchorterminal.com/compare/aider-vs-muse-code.md)\n- [Aider vs Traycer](https://www.anchorterminal.com/compare/aider-vs-traycer.md)\n- [Amp vs Muse Code](https://www.anchorterminal.com/compare/amp-vs-muse-code.md)\n- [Amp vs Traycer](https://www.anchorterminal.com/compare/amp-vs-traycer.md)\n- [Antigravity CLI vs Muse Code](https://www.anchorterminal.com/compare/antigravity-cli-vs-muse-code.md)\n- [Antigravity CLI vs Traycer](https://www.anchorterminal.com/compare/antigravity-cli-vs-traycer.md)\n- [Auggie CLI vs Muse 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Traycer](https://www.anchorterminal.com/compare/openai-agents-api-vs-traycer.md)\n- [OpenAI Codex vs Traycer](https://www.anchorterminal.com/compare/openai-codex-vs-traycer.md)\n- [OpenCode vs Traycer](https://www.anchorterminal.com/compare/opencode-vs-traycer.md)\n- [OpenHands vs Traycer](https://www.anchorterminal.com/compare/openhands-vs-traycer.md)\n- [Orca vs Traycer](https://www.anchorterminal.com/compare/orca-vs-traycer.md)\n- [Paseo vs Traycer](https://www.anchorterminal.com/compare/paseo-vs-traycer.md)\n- [Prime Agent vs Traycer](https://www.anchorterminal.com/compare/prime-agent-vs-traycer.md)\n- [Qoder CLI vs Traycer](https://www.anchorterminal.com/compare/qoder-cli-vs-traycer.md)\n- [Qwen Code vs Traycer](https://www.anchorterminal.com/compare/qwen-code-vs-traycer.md)\n- [Mirror CLI vs Traycer](https://www.anchorterminal.com/compare/reflection-mirror-vs-traycer.md)\n- [Rovo Dev CLI vs Traycer](https://www.anchorterminal.com/compare/rovo-dev-cli-vs-traycer.md)\n- [Sculptor vs Traycer](https://www.anchorterminal.com/compare/sculptor-vs-traycer.md)\n- [T3 Code vs Traycer](https://www.anchorterminal.com/compare/t3-code-vs-traycer.md)\n- [Traycer vs Unstoppable](https://www.anchorterminal.com/compare/traycer-vs-unstoppable.md)\n- [Traycer vs Verdent](https://www.anchorterminal.com/compare/traycer-vs-verdent.md)\n- [Traycer vs Vibe-Trading](https://www.anchorterminal.com/compare/traycer-vs-vibe-trading.md)\n- [Traycer vs Warp (Warp Agent CLI and the Oz Agent API)](https://www.anchorterminal.com/compare/traycer-vs-warp.md)\n- [Clawboo vs Muse Code](https://www.anchorterminal.com/compare/clawboo-vs-muse-code.md)\n- [Clawboo vs Traycer](https://www.anchorterminal.com/compare/clawboo-vs-traycer.md)\n- [CLI Manager vs Muse Code](https://www.anchorterminal.com/compare/cli-manager-vs-muse-code.md)\n- [CLI Manager vs Traycer](https://www.anchorterminal.com/compare/cli-manager-vs-traycer.md)\n- [Harness vs Muse Code](https://www.anchorterminal.com/compare/harness-autonomous-vs-muse-code.md)\n- [Harness vs Traycer](https://www.anchorterminal.com/compare/harness-autonomous-vs-traycer.md)\n- [Muse Code vs Paperclip](https://www.anchorterminal.com/compare/muse-code-vs-paperclip.md)\n- [Muse Code vs Parallax](https://www.anchorterminal.com/compare/muse-code-vs-parallax-agents.md)\n- [OpenMausBot vs Traycer](https://www.anchorterminal.com/compare/openmausbot-vs-traycer.md)\n- [Paperclip vs Traycer](https://www.anchorterminal.com/compare/paperclip-vs-traycer.md)\n- [Parallax vs Traycer](https://www.anchorterminal.com/compare/parallax-agents-vs-traycer.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-11-07", "license": 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