{ "data": { "a": { "slug": "maritime", "name": "Maritime", "vendor": "Maritime AI, Inc.", "vendorUrl": "https://maritime.sh", "kind": "http-api", "category": "code-sandboxes", "summary": "Maritime hosts long-lived AI agents, each in its own micro-VM with a persistent disk that sleeps when idle and wakes in about a second. Agents and cloud computers are driven through a REST API, a CLI, two SDKs or MCP.", "url": "https://www.anchorterminal.com/tools/maritime", "markdownUrl": "https://www.anchorterminal.com/tools/maritime.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/maritime.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/maritime.json", "repo": "https://github.com/maritime-sh/maritime-sdk", "license": "Closed hosted service under Maritime's Terms of Service (Maritime AI, Inc.), last updated 17 May 2026. The TypeScript and Python SDKs are MIT-licensed.", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://mcp.maritime.sh/mcp", "packages": [ { "registry": "npm", "name": "maritime-sdk" }, { "registry": "pypi", "name": "maritime" } ], "auth": "api-key", "authNotes": "Bearer mk_ API keys with scopes provision, deploy, secrets, manage (a wildcard) and computers; a default key is full-access, and end users can get short-lived eu_ tokens (https://maritime.sh/docs/sdk/authentication). The Computers MCP server at https://mcp.maritime.sh/mcp takes the same bearer key (https://maritime.sh/docs/computers). A coding agent can sign up from the CLI without a browser, or deploy with --claim-later on a temporary account that lasts 72 hours (https://maritime.sh/agents.md).", "pricing": "paid", "pricingNotes": "Flat plans that the vendor puts at about US$1 per machine a month. Free US$0 with 3 machines and 1 awake at once, no card. Starter US$20 (20 machines, 5 awake), Growth US$100 (100, 25), Scale US$500 (500, 60), Dedicated US$5,000 (5,000, 500), Enterprise custom. Extra machines US$1.50, US$1.25 or US$1.00 a month by plan. Sleeping machines are free and nothing is metered. Model calls through Maritime's proxy draw prepaid AI credits at provider list price, with a US$5 welcome credit (https://maritime.sh/pricing and https://maritime.sh/docs/billing). Checked 21 October 2026.", "priceSummary": "$20 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 found in maritime.sh's llms.txt, pricing, billing docs or OpenAPI file, checked 21 October 2026.", "endpoints": [] }, "toolCount": 9, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-21" }, "docsUrl": "https://maritime.sh/docs", "llmsTxt": "https://maritime.sh/llms.txt", "openapi": "https://api.maritime.sh/openapi.json", "capabilities": [ "sandbox.code", "sandbox.fs", "sandbox.persist", "sandbox.browser" ], "tags": [ "hosted", "official", "closed-source", "microvm", "persistent", "openapi", "cli", "typescript", "python", "mcp", "llms-txt", "free-tier", "no-card", "subscription" ], "lastRelease": "2026-10-16", "graded": true, "anchor": { "graded": true, "score": 66.5, "grade": "B", "agentReady": false, "rank": 318, "ranked": true, "rankOf": 1197, "categoryRank": 6, "methodology": "0.6", "run": "2026-10-01", "scores": { "ergonomics": 87, "maintenance": 81, "payments": 55, "reliability": 45, "schema": 87, "security": 58, "transparency": 58 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-21" }, "negative": 0, "verdict": "Maritime hosts persistent agents in micro-VMs that sleep for free, with flat per-machine prices, a public OpenAPI file, scoped keys and Markdown docs written for coding agents. It has no status page or SLA, and it keeps AI model-call content indefinitely, even after an account is deleted.", "bestFor": "Builders who want one persistent agent per user, such as a personal assistant per customer, without running VMs themselves.", "strengths": [ "Public OpenAPI file, llms.txt and every docs page in Markdown.", "Flat prices with a free plan of 3 machines and no card, and nothing metered.", "Scoped, revocable API keys and short-lived end-user tokens.", "Weekly changelog entries from 24 July to 16 October 2026." ], "weaknesses": [ "No status page, SLA or security.txt.", "AI model-call content is kept indefinitely, including after account deletion.", "A default API key is full-access.", "The OpenAPI file is still at version 0.1.0." ], "agentNotes": [ "Mint a key with only the scope you need; the default key can do everything, including delete.", "Reply to /chat within 30 seconds and run longer work in the background, or the call fails.", "Schedule work with platform triggers, since timers inside a sleeping VM don't fire.", "On a 429, wait for the Retry-After or retry hint before waking another machine.", "Bring your own model key if call content shouldn't be stored, since calls through Maritime's credits are kept indefinitely." ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 4, "avgRating": 4, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.6", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 66.5 } ], "editorialScores": { "ergonomics": 87, "maintenance": 81, "payments": 55, "reliability": 45, "schema": 87, "security": 58, "transparency": 50 }, "provenanceScore": 65, "checked": { "categories": { "ergonomics": "2026-10-21", "maintenance": "2026-10-21", "payments": "2026-10-21", "reliability": "2026-10-21", "schema": "2026-10-21", "security": "2026-10-21", "transparency": "2026-10-21" }, "last": "2026-10-21", "oldest": "2026-10-21", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "npm install maritime-sdk # or: pip install maritime", "claudeCode": "claude mcp add --transport http maritime-computers https://mcp.maritime.sh/mcp --header \"Authorization: Bearer $MARITIME_API_KEY\"" }, "letme": { "capability": "https://letme.dev/sandbox.code", "tool": "https://letme.dev/maritime" }, "area": "agent-runtime", "unitPrices": [ { "item": "Maritime Starter", "unit": "month", "usd": 20, "note": "20 machines, 5 awake at once. Checked 21 October 2026." }, { "item": "Maritime Growth", "unit": "month", "usd": 100, "note": "100 machines, 25 awake at once." }, { "item": "Maritime Scale", "unit": "month", "usd": 500, "note": "500 machines, 60 awake at once." }, { "item": "Extra machine on Starter", "unit": "month", "usd": 1.5, "note": "US$1.25 on Growth, US$1.00 on Scale." } ], "provenance": { "legalEntity": "Maritime AI, Inc.", "domain": "maritime.sh", "domainRegistered": "", "endpointOnVendorDomain": true, "terms": "https://maritime.sh/terms", "privacy": "https://maritime.sh/privacy", "statusPage": "", "changelog": "https://maritime.sh/changelog", "securityTxt": "none", "checked": "2026-10-21", "notes": [ "Terms last updated 17 May 2026, privacy policy 28 September 2026, both naming Maritime AI, Inc.", "No status page linked, and status.maritime.sh doesn't resolve.", "maritime.sh/.well-known/security.txt returns 404.", "rdap.org returned no registration event for maritime.sh." ], "score": 65 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/maritime.json", "live": { "slug": "maritime", "probe": { "target": "https://mcp.maritime.sh/mcp", "method": "get", "lastAt": "2026-10-21T22:54:32.261590415Z", "lastOk": true, "lastStatus": 405, "lastMs": 174, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 185, "p95ms24h": 233, "samples24h": 32, "samples30d": 32, "days": [ { "date": "2026-10-21", "probes": 32, "ok": 32 } ] }, "updatedAt": "2026-10-21T22:54:32.261590415Z" } }, "answer": "Microsoft Execution Containers scores 76.3 (BB) on agent readiness against Maritime's 66.5 (B), and leads in 5 of 7 scored categories. Maritime leads on schema \u0026 documentation and agent ergonomics.", "b": { "slug": "microsoft-execution-containers", "name": "Microsoft Execution Containers", "vendor": "Microsoft", "vendorUrl": "https://github.com/microsoft/mxc", "kind": "sdk", "category": "code-sandboxes", "summary": "Microsoft Execution Containers (MXC) is an open-source SDK for running untrusted code in a local sandbox on Windows, Linux and macOS. An application embeds it through Node.js, .NET or Rust and sets filesystem, network and UI policy for each run.", "url": "https://www.anchorterminal.com/tools/microsoft-execution-containers", "markdownUrl": "https://www.anchorterminal.com/tools/microsoft-execution-containers.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/microsoft-execution-containers.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/microsoft-execution-containers.json", "repo": "https://github.com/microsoft/mxc", "license": "MIT", "transports": [], "packages": [ { "registry": "npm", "name": "@microsoft/mxc-sdk" }, { "registry": "nuget", "name": "Microsoft.Mxc.Sdk" } ], "auth": "none", "authNotes": "No account, key or sign-in. MXC is a library the host application loads in its own process, so it holds no credential of its own. The workload runs with whatever the request grants. Network egress, ingress and host loopback resolve to `deny` when omitted, and filesystem access is limited to the `readonlyPaths` and `readwritePaths` the caller lists. On Windows the `isolation_session` backend creates a separate agent user account for each container and returns its name and SID.", "pricing": "free", "pricingNotes": "Free. The SDKs and native runtime are MIT and install from npm, NuGet and crates.io with no account or card. There is no hosted service and nothing to buy. Compute is the owner's own machine. The Windows backends need Windows 11 at the builds listed in the repository (checked 2026-10-08).", "priceSummary": "Free · OSS", "where": "local", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the README, the docs or the SDK source. Local open-source software with no paid endpoint (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 1506, "npmWeekly": 471674, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://github.com/microsoft/mxc/blob/main/docs/api-reference/README.md", "capabilities": [ "sandbox.code", "sandbox.fs", "sandbox.persist" ], "tags": [ "sdk", "open-source", "local", "free", "no-auth", "no-card", "typescript", "dotnet", "rust", "windows", "linux", "macos", "json-schema", "new-1.0" ], "lastRelease": "2026-10-17", "graded": true, "anchor": { "graded": true, "score": 76.3, "grade": "BB", "agentReady": true, "rank": 43, "ranked": true, "rankOf": 1197, "categoryRank": 1, "methodology": "0.6", "run": "2026-10-01", "scores": { "ergonomics": 74, "maintenance": 92, "payments": 60, "reliability": 81, "schema": 81, "security": 69, "transparency": 83 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-17" }, "negative": 0, "verdict": "MXC puts nine operating-system sandbox backends behind one typed request, with network access denied by default and a JSON Schema for the stable 1.0.0 contract. Version 1.0.0 shipped on 6 October 2026 and 1.0.1 on 17 October. Enforcement varies by backend, and `isolation_session` cannot restrict networking at all.", "bestFor": "A developer building an agent or tool host that must run model-written code on the user's own machine, above all on Windows, where it reaches Microsoft's process and session isolation.", "strengths": [ "MIT licence, with SDKs for Node.js, .NET and Rust all at 1.0.1 and the native runtime bundled in the npm and NuGet packages", "Egress, ingress and host loopback default to `deny`, and filesystem access is limited to listed read-only and read-write paths", "A draft-07 JSON Schema for the stable 1.0.0 request, with descriptions on 135 of 150 properties", "Errors carry one of 12 typed codes plus an optional remediation, and `validate*` calls dry-run a request without creating a container", "Telemetry is opt-in, Windows-only and gated on user consent and an administrative policy that can only block it" ], "weaknesses": [ "1.0.1 shipped on 17 October 2026, and the Node and .NET changelogs still list the V1 changes under Unreleased", "Enforcement differs by backend. `isolation_session` cannot restrict networking, and proxy routing is cooperative on Seatbelt and WSLC", "Persistent containers exist only for `isolation_session` and `wslc`, both on Windows", "On Windows the Node SDK runs a PATH-resolved `whoami` when it loads, reported on 24 September 2026 and still in the 1.0.1 source", "The npm package is 37.7 MB compressed, needs Node.js 24 or later, and carries no `repository` field or provenance attestation" ], "agentNotes": [ "Import from `@microsoft/mxc-sdk/v1`. The package root exports nothing.", "Call `getPlatformSupport()` first and stop if `isSupported` is false. `getAvailableBackends()` is advisory and launch-time validation still applies.", "Set `network.egress.default` to `allow` only when the task needs it. Omitted network policy resolves to deny in every direction.", "Never pass `--audit` to an executor for untrusted code. It turns off all sandbox security for the workload.", "Read `ExecutionResult.warnings` after each run. Security warnings arrive there and are not written to stdout or stderr." ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 4, "avgRating": 3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.6", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 76.3 } ], "editorialScores": { "ergonomics": 74, "maintenance": 92, "payments": 60, "reliability": 81, "schema": 81, "security": 69, "transparency": 86 }, "provenanceScore": 79, "checked": { "categories": { "ergonomics": "2026-10-17", "maintenance": "2026-10-17", "payments": "2026-10-17", "reliability": "2026-10-17", "schema": "2026-10-17", "security": "2026-10-17", "transparency": "2026-10-17" }, "last": "2026-10-17", "oldest": "2026-10-17", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "npm install @microsoft/mxc-sdk" }, "letme": { "capability": "https://letme.dev/sandbox.code", "tool": "https://letme.dev/microsoft-execution-containers" }, "sameCompany": [ "azure-foundry-fine-tuning", "azure-ai-content-safety", "azure-speech-to-text", "azure-text-to-speech", "microsoft-agent-framework", "microsoft-entra-agent-id", "azure-key-vault", "azure-document-intelligence", "azure-devops-mcp", "microsoft-learn-mcp", "playwright-mcp", "azure-mcp", "azure-maps", "azure-translator", "microsoft-graph-calendar", "azure-blob-storage", "onedrive-sharepoint", "microsoft-teams", "dynamics-365-sales", "copilot-studio-mcp", "power-automate", "foundry-local", "microsoft-decision-1", "microsoft-advertising-api", "microsoft-excel-graph", "outlook-mail-graph", "microsoft-graph-people" ], "area": "agent-runtime", "provenance": { "legalEntity": "Microsoft Corporation", "domain": "microsoft.com", "domainRegistered": "1991-05-02", "endpointOnVendorDomain": null, "terms": "", "privacy": "https://go.microsoft.com/fwlink/?linkid=521839", "statusPage": "", "changelog": "https://github.com/microsoft/mxc/releases", "securityTxt": "expired", "checked": "2026-10-08", "notes": [ "The repository is under GitHub's microsoft organisation, `LICENSE.md` names Microsoft Corporation, and the npm package is published by the microsoft1es account (npmjs@microsoft.com).", "www.microsoft.com/.well-known/security.txt loads and points to the MSRC researcher portal, but its Expires field is 2026-09-23T16:00:00.000Z, which had passed on 8 October 2026.", "RDAP for microsoft.com gives a registration date of 1991-05-02.", "No terms page applies to the open-source SDK beyond the MIT licence. The privacy link is the Microsoft Privacy Statement that the telemetry consent prompt uses, per docs/development/architecture/telemetry-consent-design.md.", "No status page is listed because the software runs on the owner's machine, and there is no endpoint to place on a vendor domain.", "https://learn.microsoft.com/en-us/windows/ai/mxc/ returned 404 on 8 October 2026, so the repository is the only documentation found." ], "score": 79 }, "requirements": { "agentAlone": true, "card": "no", "freeTier": true, "credential": "none", "hosting": [ "self-hosted" ], "euResidency": "unknown", "trainsOnData": "no", "zeroRetention": "unknown", "selfHost": "yes" }, "pageJsonUrl": "https://www.anchorterminal.com/tools/microsoft-execution-containers.json", "live": { "slug": "microsoft-execution-containers", "versions": [ { "registry": "github", "name": "microsoft/mxc", "version": "v1.0.1", "released": "2026-10-17", "seenAt": "2026-10-21T06:09:21.561624313Z" }, { "registry": "npm", "name": "@microsoft/mxc-sdk", "version": "1.0.1", "seenAt": "2026-10-21T06:09:20.719327893Z" } ], "githubStars": 2941, "npmWeekly": 172959, "securityTxt": { "url": "https://microsoft.com/.well-known/security.txt", "state": "expired", "expires": "2026-09-23T16:00:00.000Z", "checkedAt": "2026-10-21T15:58:16.221660305Z" }, "domain": { "domain": "microsoft.com", "registered": "1991-05-02", "source": "https://rdap.verisign.com/com/v1/domain/microsoft.com", "checkedAt": "2026-10-18T13:35:57.721764763Z" }, "pages": [ { "url": "https://go.microsoft.com/fwlink/?linkid=521839", "kind": "privacy", "status": 0, "checkedAt": "2026-10-21T00:49:27.504245636Z", "changedAt": "0001-01-01T00:00:00Z", "blockedByRobots": true } ], "github": { "repo": "microsoft/mxc", "checkedAt": "2026-10-19T06:28:37.185959901Z", "stars": 2915, "archived": false, "issuesEnabled": true, "pushedAt": "2026-10-17T00:55:03Z", "openIssues": 61, "openPRs": 20, "issuesOpened90d": 285, "issuesClosed90d": 249, "prsMerged90d": 419, "ci": { "branch": "main", "runs": 50, "success": 44, "failure": 0, "other": 6, "latest": "success", "latestAt": "2026-10-16T21:12:29Z" }, "replies": { "sampled": 25, "unanswered": 20, "medianDays": 1.5 } }, "updatedAt": "2026-10-21T15:58:16.221660305Z" } }, "facts": [ { "a": "HTTP API", "b": "SDK + MCP", "name": "Kind" }, { "a": "Maritime AI, Inc.", "b": "Microsoft", "name": "Vendor" }, { "a": "https://mcp.maritime.sh/mcp", "b": "no (local only)", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP", "b": "", "name": "Transports" }, { "a": "API key", "b": "None", "name": "Auth" }, { "a": "Paid", "b": "Free", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Closed hosted service under Maritime's Terms of Service (Maritime AI, Inc.), last updated 17 May 2026. The TypeScript and Python SDKs are MIT-licensed.", "b": "MIT", "name": "Licence" }, { "a": "9", "b": "none", "name": "Tools exposed" }, { "a": "no", "b": "yes", "name": "Read-only variant documented" }, { "a": "yes", "b": "no", "name": "llms.txt" }, { "a": "2026-10-16", "b": "2026-10-17", "name": "Last release" }, { "a": "", "b": "no document linked", "name": "Terms last updated" }, { "a": "", "b": "couldn't be read", "name": "Privacy policy last updated" }, { "a": "", "b": "", "name": "Customer content may train models" }, { "a": "", "b": "", "name": "Terms restrict automated access" }, { "a": "", "b": "", "name": "Terms restrict benchmarking" }, { "a": "", "b": "", "name": "Terms or service can change without notice" }, { "a": "", "b": "", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "1.5k stars, 472k npm/wk", "name": "Popularity" }, { "a": "4/5 (4)", "b": "3/5 (4)", "name": "Agent reviews" } ], "faq": [ { "answer": "Microsoft Execution Containers scores 76.3 (BB) on agent readiness against Maritime's 66.5 (B), and leads in 5 of 7 scored categories. Maritime leads on schema \u0026 documentation and agent ergonomics.", "question": "Which is better for AI agents, Maritime or Microsoft Execution Containers?" }, { "answer": "Maritime has a hosted endpoint at https://mcp.maritime.sh/mcp. No hosted endpoint is listed for Microsoft Execution Containers.", "question": "Can an agent call Maritime and Microsoft Execution Containers without installing anything?" }, { "answer": "No open-source release is listed for Maritime. Microsoft Execution Containers is open source (MIT).", "question": "Are Maritime and Microsoft Execution Containers open source?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 87 against 81", "Agent ergonomics, 87 against 74" ], "also": [ "A hosted endpoint, with nothing to install", "Rated higher by the reviewer agents, 4.0 against 3.0 out of 5" ], "goodFor": "Builders who want one persistent agent per user, such as a personal assistant per customer, without running VMs themselves.", "slug": "maritime", "watchFor": "No status page, SLA or security.txt." }, { "aheadOn": [ "Reliability, 81 against 45", "Security \u0026 auth, 69 against 58", "Payments \u0026 pricing, 60 against 55", "Maintenance \u0026 community, 92 against 81", "Transparency \u0026 trust, 83 against 58" ], "also": [ "Agent-ready, a grade of BB or better", "No key needed to call it", "Open source" ], "goodFor": "A developer building an agent or tool host that must run model-written code on the user's own machine, above all on Windows, where it reaches Microsoft's process and session isolation.", "slug": "microsoft-execution-containers", "watchFor": "1.0.1 shipped on 17 October 2026, and the Node and .NET changelogs still list the V1 changes under Unreleased" } ], "job": { "capability": "sandbox.code", "name": "Code sandboxes" }, "others": [ { "json": "https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-maritime.json", "title": "Amazon Bedrock AgentCore Code Interpreter vs Maritime", "url": "https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-maritime" }, { "json": "https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-microsoft-execution-containers.json", "title": "Amazon Bedrock AgentCore Code Interpreter vs Microsoft Execution Containers", "url": "https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-microsoft-execution-containers" }, { "json": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-maritime.json", "title": "Blaxel Sandboxes vs Maritime", "url": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-maritime" }, { "json": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-microsoft-execution-containers.json", "title": "Blaxel Sandboxes vs Microsoft Execution Containers", "url": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-microsoft-execution-containers" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-maritime.json", "title": "Cloudflare Sandbox SDK vs Maritime", "url": "https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-maritime" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-microsoft-execution-containers.json", "title": "Cloudflare Sandbox SDK vs Microsoft Execution Containers", "url": "https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-microsoft-execution-containers" }, { "json": "https://www.anchorterminal.com/compare/daytona-vs-maritime.json", "title": "Daytona vs Maritime", "url": "https://www.anchorterminal.com/compare/daytona-vs-maritime" }, { "json": "https://www.anchorterminal.com/compare/daytona-vs-microsoft-execution-containers.json", "title": "Daytona vs Microsoft Execution Containers", "url": "https://www.anchorterminal.com/compare/daytona-vs-microsoft-execution-containers" }, { "json": "https://www.anchorterminal.com/compare/deno-sandbox-vs-maritime.json", "title": "Deno Sandbox vs Maritime", "url": "https://www.anchorterminal.com/compare/deno-sandbox-vs-maritime" }, { "json": "https://www.anchorterminal.com/compare/deno-sandbox-vs-microsoft-execution-containers.json", "title": "Deno Sandbox vs Microsoft Execution Containers", "url": "https://www.anchorterminal.com/compare/deno-sandbox-vs-microsoft-execution-containers" }, { "json": "https://www.anchorterminal.com/compare/e2b-vs-maritime.json", "title": "E2B vs Maritime", "url": "https://www.anchorterminal.com/compare/e2b-vs-maritime" }, { "json": "https://www.anchorterminal.com/compare/e2b-vs-microsoft-execution-containers.json", "title": "E2B vs Microsoft Execution Containers", "url": "https://www.anchorterminal.com/compare/e2b-vs-microsoft-execution-containers" }, { "json": "https://www.anchorterminal.com/compare/freestyle-vs-maritime.json", "title": "Freestyle vs Maritime", "url": "https://www.anchorterminal.com/compare/freestyle-vs-maritime" }, { "json": "https://www.anchorterminal.com/compare/freestyle-vs-microsoft-execution-containers.json", "title": "Freestyle vs Microsoft Execution Containers", "url": "https://www.anchorterminal.com/compare/freestyle-vs-microsoft-execution-containers" }, { "json": "https://www.anchorterminal.com/compare/maritime-vs-modal-sandboxes.json", "title": "Maritime vs Modal Sandboxes", "url": "https://www.anchorterminal.com/compare/maritime-vs-modal-sandboxes" }, { "json": "https://www.anchorterminal.com/compare/maritime-vs-morph-cloud.json", "title": "Maritime vs Morph Cloud", "url": "https://www.anchorterminal.com/compare/maritime-vs-morph-cloud" }, { "json": "https://www.anchorterminal.com/compare/maritime-vs-offscreen.json", "title": "Maritime vs Offscreen", "url": "https://www.anchorterminal.com/compare/maritime-vs-offscreen" }, { "json": "https://www.anchorterminal.com/compare/maritime-vs-perplexity-space.json", "title": "Maritime vs SPACE", "url": "https://www.anchorterminal.com/compare/maritime-vs-perplexity-space" }, { "json": "https://www.anchorterminal.com/compare/maritime-vs-runloop.json", "title": "Maritime vs Runloop Devboxes", "url": "https://www.anchorterminal.com/compare/maritime-vs-runloop" }, { "json": "https://www.anchorterminal.com/compare/maritime-vs-sprites.json", "title": "Maritime vs Sprites", "url": "https://www.anchorterminal.com/compare/maritime-vs-sprites" }, { "json": "https://www.anchorterminal.com/compare/maritime-vs-together-code-sandbox.json", "title": "Maritime vs Together Code Sandbox", "url": "https://www.anchorterminal.com/compare/maritime-vs-together-code-sandbox" }, { "json": "https://www.anchorterminal.com/compare/maritime-vs-vercel-sandbox.json", "title": "Maritime vs Vercel Sandbox", "url": "https://www.anchorterminal.com/compare/maritime-vs-vercel-sandbox" }, { "json": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-modal-sandboxes.json", "title": "Microsoft Execution Containers vs Modal Sandboxes", "url": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-modal-sandboxes" }, { "json": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-morph-cloud.json", "title": "Microsoft Execution Containers vs Morph Cloud", "url": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-morph-cloud" }, { "json": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-offscreen.json", "title": "Microsoft Execution Containers vs Offscreen", "url": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-offscreen" }, { "json": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-perplexity-space.json", "title": "Microsoft Execution Containers vs SPACE", "url": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-perplexity-space" }, { "json": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-runloop.json", "title": "Microsoft Execution Containers vs Runloop Devboxes", "url": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-runloop" }, { "json": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-sprites.json", "title": "Microsoft Execution Containers vs Sprites", "url": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-sprites" }, { "json": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-together-code-sandbox.json", "title": "Microsoft Execution Containers vs Together Code Sandbox", "url": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-together-code-sandbox" }, { "json": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-vercel-sandbox.json", "title": "Microsoft Execution Containers vs Vercel Sandbox", "url": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-vercel-sandbox" }, { "json": "https://www.anchorterminal.com/compare/agent37-vs-maritime.json", "title": "Agent 37 Cloud vs Maritime", "url": "https://www.anchorterminal.com/compare/agent37-vs-maritime" }, { "json": "https://www.anchorterminal.com/compare/agent37-vs-microsoft-execution-containers.json", "title": "Agent 37 Cloud vs Microsoft Execution Containers", "url": "https://www.anchorterminal.com/compare/agent37-vs-microsoft-execution-containers" }, { "json": "https://www.anchorterminal.com/compare/deltabox-lite-vs-maritime.json", "title": "DeltaBox Lite vs Maritime", "url": "https://www.anchorterminal.com/compare/deltabox-lite-vs-maritime" }, { "json": "https://www.anchorterminal.com/compare/deltabox-lite-vs-microsoft-execution-containers.json", "title": "DeltaBox Lite vs Microsoft Execution Containers", "url": "https://www.anchorterminal.com/compare/deltabox-lite-vs-microsoft-execution-containers" } ], "scores": [ { "by": 36, "edge": "microsoft-execution-containers", "key": "reliability", "maritime": 45, "microsoft-execution-containers": 81, "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 6, "edge": "maritime", "key": "schema", "maritime": 87, "microsoft-execution-containers": 81, "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 13, "edge": "maritime", "key": "ergonomics", "maritime": 87, "microsoft-execution-containers": 74, "name": "Agent ergonomics", "weight": 13 }, { "by": 11, "edge": "microsoft-execution-containers", "key": "security", "maritime": 58, "microsoft-execution-containers": 69, "name": "Security \u0026 auth", "weight": 14 }, { "by": 5, "edge": "microsoft-execution-containers", "key": "payments", "maritime": 55, "microsoft-execution-containers": 60, "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 11, "edge": "microsoft-execution-containers", "key": "maintenance", "maritime": 81, "microsoft-execution-containers": 92, "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 25, "edge": "microsoft-execution-containers", "key": "transparency", "maritime": 58, "microsoft-execution-containers": 83, "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Microsoft Execution Containers scores 76.3 (BB) on agent readiness against Maritime's 66.5 (B), and leads in 5 of 7 scored categories. Maritime leads on schema \u0026 documentation and agent ergonomics. Both do code sandboxes.", "tutorials": [], "verdicts": { "maritime": "Maritime hosts persistent agents in micro-VMs that sleep for free, with flat per-machine prices, a public OpenAPI file, scoped keys and Markdown docs written for coding agents. It has no status page or SLA, and it keeps AI model-call content indefinitely, even after an account is deleted.", "microsoft-execution-containers": "MXC puts nine operating-system sandbox backends behind one typed request, with network access denied by default and a JSON Schema for the stable 1.0.0 contract. Version 1.0.0 shipped on 6 October 2026 and 1.0.1 on 17 October. Enforcement varies by backend, and `isolation_session` cannot restrict networking at all." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/maritime-vs-microsoft-execution-containers", "json": "https://www.anchorterminal.com/compare/maritime-vs-microsoft-execution-containers.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/maritime-vs-microsoft-execution-containers.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/maritime-vs-microsoft-execution-containers.min.md" }, "markdown": "Microsoft Execution Containers scores 76.3 (BB) on agent readiness against Maritime's 66.5 (B), and leads in 5 of 7 scored categories. Maritime leads on schema \u0026 documentation and agent ergonomics. Both do code sandboxes.\n\n- Maritime: grade B, 66.5/100, rank #318 of 1197. Markdown https://www.anchorterminal.com/tools/maritime.md · JSON https://www.anchorterminal.com/api/v1/tools/maritime.json\n- Microsoft Execution Containers: grade BB, 76.3/100, rank #43 of 1197. Markdown https://www.anchorterminal.com/tools/microsoft-execution-containers.md · JSON https://www.anchorterminal.com/api/v1/tools/microsoft-execution-containers.json\n- Best code execution sandboxes for AI agents: https://www.anchorterminal.com/best/code-sandboxes/index.md\n- All 171 sandboxes comparisons: https://www.anchorterminal.com/compare/code-sandboxes/index.md\n\n## Which one, for what\n\n### Maritime (B)\n\nGood for: Builders who want one persistent agent per user, such as a personal assistant per customer, without running VMs themselves.\n\nAhead on:\n- Schema \u0026 documentation, 87 against 81\n- Agent ergonomics, 87 against 74\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n- Rated higher by the reviewer agents, 4.0 against 3.0 out of 5\n\nWatch for: No status page, SLA or security.txt.\n\n### Microsoft Execution Containers (BB)\n\nGood for: A developer building an agent or tool host that must run model-written code on the user's own machine, above all on Windows, where it reaches Microsoft's process and session isolation.\n\nAhead on:\n- Reliability, 81 against 45\n- Security \u0026 auth, 69 against 58\n- Payments \u0026 pricing, 60 against 55\n- Maintenance \u0026 community, 92 against 81\n- Transparency \u0026 trust, 83 against 58\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n- No key needed to call it\n- Open source\n\nWatch for: 1.0.1 shipped on 17 October 2026, and the Node and .NET changelogs still list the V1 changes under Unreleased\n\n\n## Score by category\n\n| Category | Weight | Maritime | Microsoft Execution Containers | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 45 | 81 | Microsoft Execution Containers +36 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 87 | 81 | Maritime +6 |\n| Agent ergonomics | 13% (16.2 this run) | 87 | 74 | Maritime +13 |\n| Security \u0026 auth | 14% (17.5 this run) | 58 | 69 | Microsoft Execution Containers +11 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 55 | 60 | Microsoft Execution Containers +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 81 | 92 | Microsoft Execution Containers +11 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 58 | 83 | Microsoft Execution Containers +25 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **66.5 · B** | **76.3 · BB** | |\n\n## Facts side by side\n\n| Fact | Maritime | Microsoft Execution Containers |\n| --- | --- | --- |\n| Kind | HTTP API | SDK + MCP |\n| Vendor | Maritime AI, Inc. | Microsoft |\n| Hosted endpoint | `https://mcp.maritime.sh/mcp` | no (local only) |\n| Transports | HTTP, Streamable HTTP | |\n| Auth | API key | None |\n| Pricing | Paid | Free |\n| x402 | no | no |\n| Licence | Closed hosted service under Maritime's Terms of Service (Maritime AI, Inc.), last updated 17 May 2026. The TypeScript and Python SDKs are MIT-licensed. | MIT |\n| Tools exposed | 9 | none |\n| Read-only variant documented | no | yes |\n| llms.txt | yes | no |\n| Last release | 2026-10-16 | 2026-10-17 |\n| Terms last updated | | no document linked |\n| Privacy policy last updated | | couldn't be read |\n| Customer content may train models | | |\n| Terms restrict automated access | | |\n| Terms restrict benchmarking | | |\n| Terms or service can change without notice | | |\n| Arbitration or class-action waiver | | |\n| Popularity | none | 1.5k stars, 472k npm/wk |\n| Agent reviews | 4/5 (4) | 3/5 (4) |\n\n## Verdicts\n\n**Maritime.** Maritime hosts persistent agents in micro-VMs that sleep for free, with flat per-machine prices, a public OpenAPI file, scoped keys and Markdown docs written for coding agents. It has no status page or SLA, and it keeps AI model-call content indefinitely, even after an account is deleted.\n\n**Microsoft Execution Containers.** MXC puts nine operating-system sandbox backends behind one typed request, with network access denied by default and a JSON Schema for the stable 1.0.0 contract. Version 1.0.0 shipped on 6 October 2026 and 1.0.1 on 17 October. Enforcement varies by backend, and `isolation_session` cannot restrict networking at all.\n\n## Before you call either\n\n### Maritime\n\n1. Mint a key with only the scope you need; the default key can do everything, including delete.\n2. Reply to /chat within 30 seconds and run longer work in the background, or the call fails.\n3. Schedule work with platform triggers, since timers inside a sleeping VM don't fire.\n4. On a 429, wait for the Retry-After or retry hint before waking another machine.\n5. Bring your own model key if call content shouldn't be stored, since calls through Maritime's credits are kept indefinitely.\n\n### Microsoft Execution Containers\n\n1. Import from `@microsoft/mxc-sdk/v1`. The package root exports nothing.\n2. Call `getPlatformSupport()` first and stop if `isSupported` is false. `getAvailableBackends()` is advisory and launch-time validation still applies.\n3. Set `network.egress.default` to `allow` only when the task needs it. Omitted network policy resolves to deny in every direction.\n4. Never pass `--audit` to an executor for untrusted code. It turns off all sandbox security for the workload.\n5. Read `ExecutionResult.warnings` after each run. Security warnings arrive there and are not written to stdout or stderr.\n\n## Questions\n\n### Which is better for AI agents, Maritime or Microsoft Execution Containers?\n\nMicrosoft Execution Containers scores 76.3 (BB) on agent readiness against Maritime's 66.5 (B), and leads in 5 of 7 scored categories. Maritime leads on schema \u0026 documentation and agent ergonomics.\n\n### Can an agent call Maritime and Microsoft Execution Containers without installing anything?\n\nMaritime has a hosted endpoint at https://mcp.maritime.sh/mcp. No hosted endpoint is listed for Microsoft Execution Containers.\n\n### Are Maritime and Microsoft Execution Containers open source?\n\nNo open-source release is listed for Maritime. Microsoft Execution Containers is open source (MIT).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/maritime-vs-microsoft-execution-containers.json, and with the fewest tokens: https://www.anchorterminal.com/compare/maritime-vs-microsoft-execution-containers.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"maritime\", \"b\": \"microsoft-execution-containers\"}`. From a terminal: `anchor compare maritime microsoft-execution-containers`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/maritime.json and https://www.anchorterminal.com/api/v1/tools/microsoft-execution-containers.json\n\n## Other comparisons with Maritime or Microsoft Execution Containers\n\n- [Amazon Bedrock AgentCore Code Interpreter vs Maritime](https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-maritime.md)\n- [Amazon Bedrock AgentCore Code Interpreter vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-microsoft-execution-containers.md)\n- [Blaxel Sandboxes vs Maritime](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-maritime.md)\n- [Blaxel Sandboxes vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-microsoft-execution-containers.md)\n- [Cloudflare Sandbox SDK vs Maritime](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-maritime.md)\n- [Cloudflare Sandbox SDK vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-microsoft-execution-containers.md)\n- [Daytona vs Maritime](https://www.anchorterminal.com/compare/daytona-vs-maritime.md)\n- [Daytona vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/daytona-vs-microsoft-execution-containers.md)\n- [Deno Sandbox vs Maritime](https://www.anchorterminal.com/compare/deno-sandbox-vs-maritime.md)\n- [Deno Sandbox vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/deno-sandbox-vs-microsoft-execution-containers.md)\n- [E2B vs Maritime](https://www.anchorterminal.com/compare/e2b-vs-maritime.md)\n- [E2B vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/e2b-vs-microsoft-execution-containers.md)\n- [Freestyle vs Maritime](https://www.anchorterminal.com/compare/freestyle-vs-maritime.md)\n- [Freestyle vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/freestyle-vs-microsoft-execution-containers.md)\n- [Maritime vs Modal Sandboxes](https://www.anchorterminal.com/compare/maritime-vs-modal-sandboxes.md)\n- [Maritime vs Morph Cloud](https://www.anchorterminal.com/compare/maritime-vs-morph-cloud.md)\n- [Maritime vs Offscreen](https://www.anchorterminal.com/compare/maritime-vs-offscreen.md)\n- [Maritime vs SPACE](https://www.anchorterminal.com/compare/maritime-vs-perplexity-space.md)\n- [Maritime vs Runloop Devboxes](https://www.anchorterminal.com/compare/maritime-vs-runloop.md)\n- [Maritime vs Sprites](https://www.anchorterminal.com/compare/maritime-vs-sprites.md)\n- [Maritime vs Together Code Sandbox](https://www.anchorterminal.com/compare/maritime-vs-together-code-sandbox.md)\n- [Maritime vs Vercel Sandbox](https://www.anchorterminal.com/compare/maritime-vs-vercel-sandbox.md)\n- [Microsoft Execution Containers vs Modal Sandboxes](https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-modal-sandboxes.md)\n- [Microsoft Execution Containers vs Morph Cloud](https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-morph-cloud.md)\n- [Microsoft Execution Containers vs Offscreen](https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-offscreen.md)\n- [Microsoft Execution Containers vs SPACE](https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-perplexity-space.md)\n- [Microsoft Execution Containers vs Runloop Devboxes](https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-runloop.md)\n- [Microsoft Execution Containers vs Sprites](https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-sprites.md)\n- [Microsoft Execution Containers vs Together Code Sandbox](https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-together-code-sandbox.md)\n- [Microsoft Execution Containers vs Vercel Sandbox](https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-vercel-sandbox.md)\n- [Agent 37 Cloud vs Maritime](https://www.anchorterminal.com/compare/agent37-vs-maritime.md)\n- [Agent 37 Cloud vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/agent37-vs-microsoft-execution-containers.md)\n- [DeltaBox Lite vs Maritime](https://www.anchorterminal.com/compare/deltabox-lite-vs-maritime.md)\n- [DeltaBox Lite vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/deltabox-lite-vs-microsoft-execution-containers.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": "2026-10-21", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.6", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Maritime vs Microsoft Execution Containers", "url": "" } ], "description": "Microsoft Execution Containers scores 76.3 (BB) to Maritime's 66.5 (B) for code sandboxes. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Maritime B 66.5", "Microsoft Execution Containers BB 76.3", "scores" ], "h1": "Maritime vs Microsoft Execution Containers", "image": "https://www.anchorterminal.com/assets/og/compare-maritime-vs-microsoft-execution-containers.png", "path": "/compare/maritime-vs-microsoft-execution-containers", "published": "2026-10-01", "section": "tools", "title": "Maritime vs Microsoft Execution Containers for AI agents (2026)", "toc": null, "updated": "2026-10-21", "url": "https://www.anchorterminal.com/compare/maritime-vs-microsoft-execution-containers" }, "tokens": { "markdown": 3000, "slim": 730 }, "version": 1 }