{ "data": { "a": { "slug": "celesto", "name": "Celesto (formerly SmolVM)", "vendor": "Celesto AI, Inc.", "vendorUrl": "https://celesto.ai", "kind": "sdk", "category": "code-sandboxes", "summary": "Celesto, formerly SmolVM, is an open-source Python SDK and CLI from Celesto AI that runs disposable Firecracker or QEMU microVMs on the owner's machine for agent code, browsers and desktops, with an optional paid Celesto Cloud.", "url": "https://www.anchorterminal.com/tools/celesto", "markdownUrl": "https://www.anchorterminal.com/tools/celesto.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/celesto.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/celesto.json", "dns": "celesto.grade.anchorterminal.com", "repo": "https://github.com/CelestoAI/Celesto", "license": "Apache-2.0", "transports": [], "packages": [ { "registry": "pypi", "name": "celesto" } ], "auth": "none", "authNotes": "Local use needs no account or key. The local API server and dashboard each require a bearer token, generated at start or read from CELESTO_SERVER_TOKEN and CELESTO_DASHBOARD_TOKEN. Celesto Cloud uses an organisation-bound CELESTO_API_KEY with named permissions (see, execute, delete) set in the dashboard.", "pricing": "freemium", "pricingNotes": "The local SDK and CLI are free under Apache-2.0. Celesto Cloud bills sandboxes by the running hour from $0.015 (Micro, 1 vCPU, 2 GB) to $0.16 (XL, 8 vCPU, 32 GB), prepaid from $2.01, with a one-time $5 Micro credit and no card.", "priceSummary": "$0.015 / session-hr", "where": "local", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the repository, the docs, llms.txt or the pricing page (checked 2026-11-06). Cloud runtime is prepaid by card under Settings \u003e Billing.", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 1149, "npmWeekly": null, "pypiWeekly": 699, "asOf": "2026-11-06" }, "docsUrl": "https://celesto.ai/docs", "llmsTxt": "https://celesto.ai/llms.txt", "openapi": "https://github.com/CelestoAI/Celesto/blob/main/ts/celesto-local-server.openapi.json", "capabilities": [ "sandbox.code", "sandbox.fs", "sandbox.persist", "sandbox.browser" ], "tags": [ "open-source", "local", "self-hosted", "hosted", "freemium", "no-card", "free-tier", "apache-2.0", "python", "typescript", "cli", "microvm", "firecracker", "llms-txt", "openapi", "telemetry", "pre-1.0", "renamed" ], "lastRelease": "2026-11-05", "graded": true, "anchor": { "graded": true, "score": 68, "grade": "B", "agentReady": false, "rank": 298, "ranked": true, "rankOf": 1486, "categoryRank": 6, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 69, "maintenance": 81, "payments": 60, "reliability": 66, "schema": 85, "security": 52, "transparency": 70 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-06" }, "negative": 0, "verdict": "Celesto runs each agent task in a local Firecracker or QEMU microVM with its own kernel, driven by a CLI with a stable JSON envelope and a Python SDK, free under Apache-2.0. It is pre-1.0, renamed from SmolVM on 19 September 2026, sends usage telemetry after a first-use notice, and leaves outbound networking open unless a mode is set.", "bestFor": "Local microVM sandboxes for agent code, browsers and desktops on Linux and macOS, with a path to a hosted cloud.", "strengths": [ "Apache-2.0, installs from PyPI with `celesto setup` and `celesto doctor`, and runs local microVMs with no account or key", "Every `--json` response has the same `ok`, `command`, `exit_code`, `data` and `error` fields, with recovery commands in errors", "Network modes `off`, `public` (proxy that rejects private and metadata addresses) and `restricted` with CIDR or domain allowlists", "Dated changelog with Security sections, breaking changes marked, and 22 PyPI releases in the 90 days to 6 November 2026", "OpenAPI documents for the local server (24 operations) and the cloud API (171 operations) in the repository, plus llms.txt" ], "weaknesses": [ "Version 0.1.13 and declared pre-1.0 in SECURITY.md, with the TypeScript SDK an alpha installed from a GitHub tarball", "Outbound network access is open by default, and Linux TAP mode does not block every private network or metadata service", "Usage telemetry to PostHog is on after a first-use notice, until switched off", "Renamed from SmolVM on 19 September 2026 in a breaking release that removed the `smolvm` command and import path", "No security.txt, bug bounty or certification found, and CI results could not be read" ], "agentNotes": [ "Pass `--json` to every `celesto` command and branch on `ok` and `exit_code`, not on printed text", "Create computers with unique names and delete them by exact name when the job ends, including after failures", "Set `internet_settings={\"mode\": \"off\"}` or `restricted` for untrusted code, since the default is open", "Set CELESTO_NO_TELEMETRY=1 in unattended runs if usage events must not leave the machine", "Never paste browser or display connection URLs into model context; possession of the URL grants control" ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 68 } ], "editorialScores": { "ergonomics": 69, "maintenance": 81, "payments": 60, "reliability": 66, "schema": 85, "security": 52, "transparency": 74 }, "provenanceScore": 66, "checked": { "categories": { "ergonomics": "2026-11-06", "maintenance": "2026-11-06", "payments": "2026-11-06", "reliability": "2026-11-06", "schema": "2026-11-06", "security": "2026-11-06", "transparency": "2026-11-06" }, "last": "2026-11-06", "oldest": "2026-11-06", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "pip install celesto \u0026\u0026 celesto setup \u0026\u0026 celesto doctor", "headless": { "create": "celesto computer create --name agent-job --json", "delete": "celesto computer delete agent-job --json", "exec": "celesto computer exec agent-job --json -- python -m pytest" } }, "letme": { "capability": "https://letme.dev/sandbox.code", "tool": "https://letme.dev/celesto" }, "area": "agent-runtime", "unitPrices": [ { "item": "Cloud Micro sandbox (1 vCPU, 2 GB)", "unit": "session-hour", "usd": 0.015, "note": "Billed by the running hour; local use is free" }, { "item": "Cloud XL sandbox (8 vCPU, 32 GB)", "unit": "session-hour", "usd": 0.16, "note": "Largest size on the pricing page" } ], "provenance": { "legalEntity": "Celesto AI, Inc.", "domain": "celesto.ai", "domainRegistered": "2025-07-13", "endpointOnVendorDomain": null, "terms": "https://celesto.ai/legal/terms", "privacy": "https://celesto.ai/legal/privacy-policy", "statusPage": "", "changelog": "https://github.com/CelestoAI/Celesto/blob/main/CHANGELOG.md", "securityTxt": "none", "checked": "2026-11-06", "notes": [ "The privacy policy, last updated 30 October 2026, names Celesto AI, Inc., a Delaware corporation with a Wilmington mailing address. It has no clause on automated access.", "celesto.ai/robots.txt allows all crawlers. docs.celesto.ai carries Content-Signal ai-train=yes, search=yes, ai-input=yes.", "RDAP gives celesto.ai a registration date of 13 July 2025.", "/.well-known/security.txt returns 404. SECURITY.md asks for private reports through GitHub's vulnerability reporting. No status page is linked from the pricing page." ], "score": 66 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/celesto.json", "live": { "slug": "celesto", "versions": [ { "registry": "github", "name": "CelestoAI/Celesto", "version": "v0.1.13", "released": "2026-11-05", "seenAt": "2026-11-06T23:13:37.416837168Z" }, { "registry": "pypi", "name": "celesto", "version": "0.1.13", "released": "2026-11-05", "seenAt": "2026-11-06T23:13:37.309276304Z" } ], "githubStars": 1149, "pypiWeekly": 699, "securityTxt": { "url": "https://celesto.ai/.well-known/security.txt", "state": "unknown", "checkedAt": "2026-11-07T16:01:01.176888246Z" }, "llmsTxt": { "url": "https://celesto.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:31:46.784166983Z" }, "pages": [ { "url": "https://raw.githubusercontent.com/CelestoAI/Celesto/main/CHANGELOG.md", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:18:00.719411253Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "8ddae4a6adbd" }, { "url": "https://celesto.ai/legal/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:00:50.868104256Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "87ce310b1db6" }, { "url": "https://celesto.ai/legal/terms", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:00:53.107282947Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "1dece6f9a42e" } ], "updatedAt": "2026-11-07T16:01:01.176888246Z" } }, "answer": "Celesto (formerly SmolVM) scores 68 (B) on agent readiness against Morph Cloud's 51.6 (D), and leads in every scored category.", "b": { "slug": "morph-cloud", "name": "Morph Cloud", "vendor": "Morph Labs", "vendorUrl": "https://cloud.morph.so", "kind": "http-api", "category": "code-sandboxes", "summary": "Cloud virtual machines for AI agents from Morph Labs. Instances boot from snapshots and can be paused with memory intact, branched into copies, and driven through a REST API, Python and TypeScript SDKs and a CLI.", "url": "https://www.anchorterminal.com/tools/morph-cloud", "markdownUrl": "https://www.anchorterminal.com/tools/morph-cloud.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/morph-cloud.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/morph-cloud.json", "dns": "morph-cloud.grade.anchorterminal.com", "repo": "https://github.com/morph-labs/morph-python-sdk", "license": "Proprietary hosted service under Morph Labs, Inc.'s Terms of Service (last revised 23 October 2025). The Python and TypeScript SDKs are Apache-2.0", "transports": [ "http" ], "remoteUrl": "https://cloud.morph.so/api", "packages": [ { "registry": "pypi", "name": "morphcloud" }, { "registry": "npm", "name": "morphcloud" } ], "auth": "api-key", "authNotes": "Bearer API key on https://cloud.morph.so/api, created in the dashboard at cloud.morph.so/web/keys after a browser signup. The SDKs and CLI read `MORPH_API_KEY`. Keys are bound to an organisation and can be listed and deleted through the API. An agent inside a devbox can use a devbox agent token limited to that devbox and to named scopes.", "pricing": "usage", "pricingNotes": "Billed in Morph Compute Units. 1 MCU is 1 vCPU-hour with 4 GB RAM-hours and 16 GB disk-hours, or 5 TB snapshot-hours, at a stated standard rate of $0.05. The Free plan is $0 a month with 0 MCUs, so compute needs a purchase. Developer is $40 a month with 1,000 MCUs and Team is $250 a month with 7,500, with more billed as used (https://cloud.morph.so/web/pricing, checked 2026-10-08). No sandbox or free credit was found that lets an agent start without paying.", "priceSummary": "$0.05 / unit", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs, the OpenAPI file or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 3, "npmWeekly": 339, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://cloud.morph.so/docs", "llmsTxt": "https://cloud.morph.so/docs/llms.txt", "openapi": "https://cloud.morph.so/api/openapi.json", "capabilities": [ "sandbox.code", "sandbox.fs", "sandbox.persist" ], "tags": [ "hosted", "openapi", "llms-txt", "python", "typescript", "cli", "status-page" ], "lastRelease": "2026-10-20", "graded": true, "anchor": { "graded": true, "score": 51.6, "grade": "D", "agentReady": false, "rank": 1014, "ranked": true, "rankOf": 1486, "categoryRank": 21, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 61, "maintenance": 48, "payments": 20, "reliability": 63, "schema": 72, "security": 39, "transparency": 44 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-04" }, "negative": 0, "verdict": "Pause and snapshot keep memory and running processes, and one call branches an instance into several copies. A public OpenAPI file covers 69 operations. Terms from Morph Labs, Inc. are published, but no privacy policy or security page was found, the free plan includes no compute credit, and the changelog holds one entry from November 2024.", "bestFor": "Agents that need to checkpoint and fork a running machine with memory intact, for parallel attempts, evaluations or reinforcement learning rollouts.", "strengths": [ "Pause and snapshot preserve memory and running processes, and a paused instance is billed for its snapshot only", "Branch creates a snapshot and starts a chosen number of copies in one call", "Public OpenAPI 3.1 file with 69 operations, plus llms.txt and llms-full.txt", "Devbox agent tokens are bound to one devbox and carry named scopes", "Status page shows 90 days without downtime to 8 October 2026 and no incident since 5 December 2025" ], "weaknesses": [ "No privacy policy, DPA or subprocessor list found on morph.so or cloud.morph.so. The terms of 23 October 2025 are the only legal document", "The Free plan starts with 0 MCUs, so compute needs a purchase, and signup is in a browser", "No request rate limits, SLA or error-code reference in the reviewed documentation", "The changelog has one entry, the beta release of 19 November 2024", "The TypeScript SDK's last release is 0.0.20 of 6 October 2025", "No security.txt, disclosure policy or certification found, and no isolation technology is named in the docs" ], "agentNotes": [ "Set `ttl_seconds` and `ttl_action` when starting an instance. Nothing in the docs stops an instance with no TTL from billing MCUs", "Pass `auth_mode: api_key` when exposing an HTTP service. The default is `none`, which makes the URL public", "Enable `wake_on_ssh` before calling exec on an instance that may be paused. There is no separate exec wake setting", "Use `/api/instance/list` and `/api/snapshot/list` with `page` and `limit` (default 50, maximum 1,000). The plain list routes return everything", "On a 503 from snapshot, branch, pause or reboot, wait for the `Retry-After` value before repeating the call" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 51.6 } ], "editorialScores": { "ergonomics": 61, "maintenance": 48, "payments": 20, "reliability": 63, "schema": 72, "security": 39, "transparency": 26 }, "provenanceScore": 62, "checked": { "categories": { "ergonomics": "2026-11-04", "maintenance": "2026-11-04", "payments": "2026-11-04", "reliability": "2026-11-04", "schema": "2026-11-04", "security": "2026-11-04", "transparency": "2026-11-04" }, "last": "2026-11-04", "lastMoved": "2026-11-04", "oldest": "2026-11-04", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "pip install morphcloud # or npm install morphcloud@0.0.20", "http": "curl -sS -H \"Authorization: Bearer $MORPH_API_KEY\" \\\n https://cloud.morph.so/api/snapshot/snapshot_your_snapshot_id" }, "letme": { "capability": "https://letme.dev/sandbox.code", "tool": "https://letme.dev/morph-cloud" }, "area": "agent-runtime", "unitPrices": [ { "item": "Morph Compute Unit", "unit": "compute-unit", "usd": 0.05, "note": "1 vCPU-hour with 4 GB RAM-hours and 16 GB disk-hours, or 5 TB snapshot-hours" }, { "item": "Instance compute", "unit": "vcpu-hour", "usd": 0.05, "note": "Includes 4 GB RAM and 16 GB disk per vCPU. MCUs are the largest of the three ratios" }, { "item": "Developer plan", "unit": "month", "usd": 40, "note": "1,000 MCUs included" }, { "item": "Team plan", "unit": "month", "usd": 250, "note": "7,500 MCUs included" } ], "provenance": { "legalEntity": "Morph Labs, Inc.", "domain": "morph.so", "domainRegistered": "", "endpointOnVendorDomain": true, "terms": "https://cloud.morph.so/web/legal/terms-of-service", "privacy": "", "statusPage": "https://status.cloud.morph.so", "changelog": "https://cloud.morph.so/docs/changelog", "securityTxt": "none", "checked": "2026-11-04", "notes": [ "The Terms of Service at cloud.morph.so/web/legal/terms-of-service (last revised 23 October 2025) name Morph Labs, Inc., 2565 3rd Street, San Francisco, CA 94107, and set California law. The 8 October check looked for /terms and missed this page.", "No privacy policy was found. The terms mention privacy and security links without giving one, so the privacy field is left out.", "The terms' acceptable use policy bars scraping outside documented APIs and publishing public benchmarks without written consent. From 4 November 2026 morph.so hosts are read only for the terms page, and earlier readings are kept.", "The API answers at cloud.morph.so/api and exposed services at morphcloud.io addresses, per the docs.", "security.txt returned 404 on cloud.morph.so and www.morph.so on 8 October 2026.", "No RDAP service answered for the .so registry on 8 October, so the registration date is blank.", "The status page at status.cloud.morph.so is on Morph's own domain and is not linked from the docs. Its 8 October reading from the page's JSON data is struck." ], "score": 62 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/morph-cloud.json", "live": { "slug": "morph-cloud", "probe": { "target": "https://cloud.morph.so/api", "method": "get", "lastAt": "2026-11-07T18:20:40.386144875Z", "lastOk": true, "lastStatus": 404, "lastMs": 225, "authRequired": false, "uptime24h": 100, "uptime30d": 99.99, "p50ms24h": 153, "p95ms24h": 272, "samples24h": 239, "samples30d": 7440, "days": [ { "date": "2026-10-08", "probes": 70, "ok": 70 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 247, "ok": 247 }, { "date": "2026-10-11", "probes": 247, "ok": 247 }, { "date": "2026-10-12", "probes": 247, "ok": 247 }, { "date": "2026-10-13", "probes": 248, "ok": 248 }, { "date": "2026-10-14", "probes": 249, "ok": 249 }, { "date": "2026-10-15", "probes": 253, "ok": 253 }, { "date": "2026-10-16", "probes": 252, "ok": 252 }, { "date": "2026-10-17", "probes": 253, "ok": 253 }, { "date": "2026-10-18", "probes": 256, "ok": 256 }, { "date": "2026-10-19", "probes": 255, "ok": 255 }, { "date": "2026-10-20", "probes": 252, "ok": 251 }, { "date": "2026-10-21", "probes": 253, "ok": 253 }, { "date": "2026-10-22", "probes": 253, "ok": 253 }, { "date": "2026-10-23", "probes": 248, "ok": 248 }, { "date": "2026-10-24", "probes": 251, "ok": 251 }, { "date": "2026-10-25", "probes": 250, "ok": 250 }, { "date": "2026-10-26", "probes": 252, "ok": 252 }, { "date": "2026-10-27", "probes": 249, "ok": 249 }, { "date": "2026-10-28", "probes": 251, "ok": 251 }, { "date": "2026-10-29", "probes": 248, "ok": 248 }, { "date": "2026-10-30", "probes": 249, "ok": 249 }, { "date": "2026-10-31", "probes": 251, "ok": 251 }, { "date": "2026-11-01", "probes": 249, "ok": 249 }, { "date": "2026-11-02", "probes": 250, "ok": 250 }, { "date": "2026-11-03", "probes": 248, "ok": 248 }, { "date": "2026-11-04", "probes": 246, "ok": 246 }, { "date": "2026-11-05", "probes": 185, "ok": 185 }, { "date": "2026-11-06", "probes": 241, "ok": 241 }, { "date": "2026-11-07", "probes": 187, "ok": 187 } ] }, "vendorStatus": { "page": "https://status.cloud.morph.so", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-11-07T04:48:12.981100793Z" }, "versions": [ { "registry": "github", "name": "morph-labs/morph-python-sdk", "version": "v0.1.116", "released": "2026-10-20", "seenAt": "2026-11-06T23:47:31.047868849Z" }, { "registry": "npm", "name": "morphcloud", "version": "0.0.20", "seenAt": "2026-11-06T23:47:30.025892064Z" }, { "registry": "pypi", "name": "morphcloud", "version": "0.1.116", "released": "2026-10-20", "seenAt": "2026-11-06T23:47:29.832166877Z" } ], "githubStars": 3, "npmWeekly": 3174, "pypiWeekly": 14767, "securityTxt": { "url": "https://morph.so/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:01:31.53156607Z" }, "llmsTxt": { "url": "https://cloud.morph.so/docs/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:33:14.409025007Z" }, "domain": { "domain": "morph.so", "checkedAt": "2026-11-01T14:14:21.327426004Z" }, "pages": [ { "url": "https://cloud.morph.so/docs/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:01:14.312974163Z", "changedAt": "2026-10-22T01:11:51.093935732Z", "fingerprint": "b39019d246cf" }, { "url": "https://cloud.morph.so/web/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-11-07T14:01:18.507963558Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "4fc791aaa2ac" }, { "url": "https://cloud.morph.so/web/legal/terms-of-service", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:01:16.493414296Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "5f48076a1d6b" } ], "github": { "repo": "morph-labs/morph-python-sdk", "checkedAt": "2026-11-02T09:08:51.369720525Z", "stars": 3, "archived": false, "issuesEnabled": true, "pushedAt": "2026-10-20T09:34:00Z", "openIssues": 0, "openPRs": 2, "issuesOpened90d": 0, "issuesClosed90d": 0, "prsMerged90d": 0, "replies": { "sampled": 1, "unanswered": 0, "medianDays": 12.1 } }, "updatedAt": "2026-11-07T18:20:40.386144875Z" } }, "edges": [ { "by": 40, "category": "payments", "leads": "celesto", "name": "Payments \u0026 pricing", "reasons": { "a": "Read with the self-hosted rule, scoring the hosted option for the price lines. No x402, MPP or L402 (0 of 40). Celesto Cloud publishes hourly prices for six sizes without a login (20). A one-time $5 Micro credit needs no card, and the local SDK is free (20). The graded local SDK installs from PyPI and runs with no account, so an agent needs no signup (20). Cloud use needs a browser signup and a card top-up. Total 60.", "b": "No x402, MPP or L402 found in the docs or the OpenAPI file on 8 October (0). Per the 8 October check, the pricing page defines the Morph Compute Unit (1 vCPU-hour with 4 GB RAM-hours and 16 GB disk-hours, or 5 TB snapshot-hours), states a standard rate of $0.05 an MCU and lists plans at $0, $40 and $250 a month without a login. The terms of 23 October 2025 add per-second compute billing and 30 days' notice of price changes (20). The Free plan starts with 0 MCUs and says to purchase MCUs to use compute. The FAQ refers readers to the billing console for any free credits (0). Signup is in a browser, and the key creation route needs an existing session or key (0). 0+20+0+0 = 20." }, "scores": { "a": 60, "b": 20 } }, { "by": 33, "category": "maintenance", "leads": "celesto", "name": "Maintenance \u0026 community", "reasons": { "a": "0.1.13 on PyPI on 5 November 2026, tagged 6 November (30). 22 PyPI releases in the 90 days to 6 November (20). Most open issues are filed by maintainers. Outside reports such as the thread-safety issue got replies, and several recent ones have none yet; pull-request reply times were not read (15 of 25). The Python SDK is current, the TypeScript SDK is an alpha not published to npm (8 of 15). uv and Cargo lock files, CodeQL and publish workflows, with run results unread (8 of 10). Total 81.", "b": "The Python SDK repository tagged v0.1.116 on 20 October 2026, a generated release that adds disk resizing to the SDK and CLI, 15 days before this check. pypi.org did not resolve on 4 November, so its upload date there is unconfirmed (30). Three tagged Python releases in the 90 days from 6 August 2026, v0.1.114 on 30 August, v0.1.115 on 1 September and v0.1.116 on 20 October. v0.1.115 changes only the version and the minimum Python version in `pyproject.toml`, a packaging-only release that counts half, so the count is two and a half, below three (0). Scored on the closed-service scale. The changelog is not kept, per the 8 October check. The terms give ops@morph.so and the status page support@morph.so. The two open pull requests on the Python SDK (1 April and 14 September 2026) had no comments on 8 October, and GitHub's pages answered 403 on 4 November (4). The Python SDK and CLI are current. The TypeScript SDK repository's newest tag is v0.0.19 from 2 October 2025 and its newest commit 6 October 2025, matching 0.0.20 on npm on 8 October (10). The Python repository has 18 unit test files, but its only workflow is a publish job run by hand, so no public CI run was found (4). 30+0+4+10+4 = 48." }, "scores": { "a": 81, "b": 48 } }, { "by": 26, "category": "transparency", "leads": "celesto", "name": "Transparency \u0026 trust", "reasons": { "a": "Apache-2.0 in LICENSE and on PyPI (30). The privacy policy of 30 October 2026 links a subprocessor registry and describes the CLI telemetry in the same terms as the docs, but gives no retention periods beyond as long as necessary. Stopped cloud disks are kept 30 days per the pricing page (18 of 30). The changelog marks removals and the breaking rename, and the glossary lists older names still accepted, with no written deprecation policy (10 of 20). Telemetry is disclosed in the README, CLI reference and privacy policy, with three opt-outs, but it is on by default after the notice (16 of 20). Total 74.", "b": "The SDKs are Apache-2.0. The platform is closed, under Terms of Service last revised 23 October 2025 at cloud.morph.so/web/legal/terms-of-service, which name Morph Labs, Inc. of San Francisco, set California law and arbitration, and promise 15 days' notice of material changes (15). No privacy policy or DPA found. The terms say Morph staff do not access disk, memory or application data in instances except on a customer's time-bound request or by law, that such access is logged, that diagnostic artifacts are deleted per a retention schedule that is not published, and that usage telemetry is shared only aggregated or de-identified. The docs describe snapshot TTLs the customer sets and say Morph Actions data has no fixed retention period (8). No deprecation policy. The terms promise not to reduce core functionality materially during a committed billing term without a workaround or a refund, with no notice period for API changes. The OpenAPI file marks a few fields deprecated and keeps a legacy query alias, without dates (3). No subprocessor list or data location statement found (0). 15+8+3+0 = 26." }, "scores": { "a": 70, "b": 44 } }, { "by": 13, "category": "schema", "leads": "celesto", "name": "Schema \u0026 documentation", "reasons": { "a": "Read as an SDK and CLI. The repository ships an OpenAPI document for the local server (24 operations) and the cloud API (171 operations), from which the TypeScript client is generated (25). llms.txt at celesto.ai, plus Markdown docs in the repository (10). The README's runtime table says when to use each runtime, and the automation section says to prefer `exec` and keep `shell`, `ssh` and `desktop` for interactive work (14 of 20). Network modes are closed values (`open`, `off`, `public`, `restricted`) and the SDK takes typed keyword arguments, though `internet_settings` is a plain dict (11 of 15). Examples directory, a JSON envelope for every command and documented cloud error fields such as `required_scope`, without a full error catalogue (12 of 15). Dated changelog and tags, pre-1.0 (13 of 15). Total 85.", "b": "Per the 8 October check, not re-read on 4 November. Public OpenAPI 3.1 file at cloud.morph.so/api/openapi.json with 52 paths and 69 operations (25). llms.txt and llms-full.txt under /docs (10). 67 of 69 operations have a description, many of one line, while the guides explain pause against stop and devboxes against instances (14). Enums for TTL action, HTTP auth mode and instance status, with patterns and ranges on names, ports and page sizes. Metadata is a free string map (12). Guides give Python, TypeScript and CLI examples. 37 operations document only a 422 beyond success, the error schema is `detail` with an optional `error_code`, and no error-code reference was found (8). The changelog page has one entry from 19 November 2024 and says it is not a complete history. The API path has no version and the SDK tags have no release notes (3). 25+10+14+12+8+3 = 72." }, "scores": { "a": 85, "b": 72 } }, { "by": 13, "category": "security", "leads": "celesto", "name": "Security \u0026 auth", "reasons": { "a": "Framework reading for local software. No credential is needed for local use, and the local API server and dashboard each require a bearer token, and cloud keys carry named permissions (22 of 30). Each computer has its own guest kernel, browser and display access uses capability URLs with a read-only option, and raw VNC is off. Against that, outbound networking is open by default and the restricting modes are opt-in (12 of 20). The security doc warns against giving connection URLs to a model as page content, but there is no guidance on treating command or page output as untrusted (5 of 15). `computer logs` shows startup output, with no audit log of commands (5 of 15). SECURITY.md with GitHub private vulnerability reporting and a supported-versions table, Security sections in the changelog, no security.txt, bug bounty or certification (8 of 20). Total 52.", "b": "Per the 8 October check of the docs, not re-read on 4 November. Bearer API keys bound to an organisation, listed with prefix and last-used time and deletable through the API. The docs mention key permissions in the dashboard without describing any. Devbox agent tokens are bound to one devbox with seven named scopes but do not expire. Short-lived delegation tokens exist for services (22). No read-only key for the instance API and no confirmation on stop or delete. Exposed HTTP services default to `auth_mode: none`, and the `api_key` mode asks callers to send the account's Morph API key to the service URL (8). Each instance is a full VM, but the docs name no isolation technology and no egress controls were found (5). Key last-used times, an organisation SSH key audit route and usage routes exist. No audit log of API calls found (4). security.txt returned 404 on cloud.morph.so and www.morph.so on 8 October. No disclosure policy, bug bounty or certification found. The terms list security controls and breach notification and offer \"available third-party security attestations (e.g., SOC reports)\" on request, without naming one (0). On 4 November osv.dev listed no advisory for `morphcloud` and the 2025 and 2026 CVE records named no Morph product. 22+8+5+4+0 = 39." }, "scores": { "a": 52, "b": 39 } }, { "by": 8, "category": "ergonomics", "leads": "celesto", "name": "Agent ergonomics", "reasons": { "a": "A CLI and SDK add no tool definitions to an agent's context. Collected command output is capped at 8 MiB with streaming as the alternative (18 of 25). `computer list`, `logs --follow` and name lookups, with little filtering (10 of 20). JSON errors carry a recovery command where Celesto has one, and cloud errors carry stable codes, operation and computer context and recovery fields since 0.1.7 (18 of 20). State-changing cloud requests are never replayed automatically and computers are addressed by unique names, but there are no idempotency keys (10 of 20). `with Computer()` creates and deletes a computer with no parameters, with Python and an alpha TypeScript SDK (13 of 15). Total 69.", "b": "Per the 8 October check of the OpenAPI file and docs, not re-read on 4 November. Instance and snapshot objects are bounded, list calls take a limit and a metadata filter, and there is no field selection. Exec returns stdout and stderr whole (15). `/api/instance/list` and `/api/snapshot/list` take `page` and `limit` (default 50, maximum 1,000) and a metadata filter. The older list routes are unpaginated (16). Newer routes document 400, 401, 402, 403, 404, 409 and 503 with a coded error body. Most routes document only 422, and no error reference was found (10). `Idempotency-Key` exists on API key creation only. Snapshot, branch, pause and reboot return `Retry-After` on a 503 refused before dispatch (8). Starting an instance needs only a snapshot id. Python SDK and CLI are current. The TypeScript SDK is 0.0.20 from 6 October 2025, the version the docs pin (12). 15+16+10+8+12 = 61." }, "scores": { "a": 69, "b": 61 } } ], "facts": [ { "a": "SDK + MCP", "b": "HTTP API", "name": "Kind" }, { "a": "Celesto AI, Inc.", "b": "Morph Labs", "name": "Vendor" }, { "a": "no (local only)", "b": "https://cloud.morph.so/api", "name": "Hosted endpoint" }, { "a": "", "b": "HTTP", "name": "Transports" }, { "a": "None", "b": "API key", "name": "Auth" }, { "a": "Freemium", "b": "Pay per use", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Apache-2.0", "b": "Proprietary hosted service under Morph Labs, Inc.'s Terms of Service (last revised 23 October 2025). The Python and TypeScript SDKs are Apache-2.0", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-11-05", "b": "2026-10-20", "name": "Last release" }, { "a": "2026-10-30", "b": "not read yet", "name": "Terms last updated" }, { "a": "2026-10-30", "b": "no document linked", "name": "Privacy policy last updated" }, { "a": "not found in the text", "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": "not found in the text", "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": "not found in the text", "b": "not read yet", "name": "Arbitration or class-action waiver" }, { "a": "1.1k stars, 699 PyPI/wk", "b": "3 stars, 339 npm/wk", "name": "Popularity" } ], "faq": [ { "answer": "Celesto (formerly SmolVM) scores 68 (B) on agent readiness against Morph Cloud's 51.6 (D), and leads in every scored category.", "question": "Which is better for AI agents, Celesto (formerly SmolVM) or Morph Cloud?" }, { "answer": "No hosted endpoint is listed for Celesto (formerly SmolVM). Morph Cloud has a hosted endpoint at https://cloud.morph.so/api.", "question": "Can an agent call Celesto (formerly SmolVM) and Morph Cloud without installing anything?" }, { "answer": "Celesto (formerly SmolVM) is open source (Apache-2.0). No open-source release is listed for Morph Cloud.", "question": "Are Celesto (formerly SmolVM) and Morph Cloud open source?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 85 against 72", "Agent ergonomics, 69 against 61", "Security \u0026 auth, 52 against 39", "Payments \u0026 pricing, 60 against 20", "Maintenance \u0026 community, 81 against 48", "Transparency \u0026 trust, 70 against 44" ], "also": [ "No key needed to call it", "Free to start without a card", "Open source" ], "goodFor": "Local microVM sandboxes for agent code, browsers and desktops on Linux and macOS, with a path to a hosted cloud.", "slug": "celesto", "watchFor": "Version 0.1.13 and declared pre-1.0 in SECURITY.md, with the TypeScript SDK an alpha installed from a GitHub tarball" }, { "aheadOn": null, "also": [ "A hosted endpoint, with nothing to install" ], "goodFor": "Agents that need to checkpoint and fork a running machine with memory intact, for parallel attempts, evaluations or reinforcement learning rollouts.", "slug": "morph-cloud", "watchFor": "No privacy policy, DPA or subprocessor list found on morph.so or cloud.morph.so. The terms of 23 October 2025 are the only legal document" } ], "history": { "celesto": null, "morph-cloud": [ { "causes": [ "correction", "time" ], "date": "2026-11-04", "delta": 0.5, "from": 51.1, "fromGrade": "D", "to": 51.6, "toGrade": "D" }, { "causes": [ "correction" ], "date": "2026-10-28", "delta": -0.1, "from": 51.2, "fromGrade": "D", "to": 51.1, "toGrade": "D" }, { "causes": [ "method" ], "date": "2026-10-27", "delta": 0.4, "from": 50.8, "fromGrade": "D", "to": 51.2, "toGrade": "D" } ] }, "job": { "capability": "sandbox.code", "name": "Code sandboxes" }, "others": [ { "json": "https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-celesto.json", "title": "Amazon Bedrock AgentCore Code Interpreter vs Celesto (formerly SmolVM)", "url": "https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-celesto" }, { "json": "https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-morph-cloud.json", "title": "Amazon Bedrock AgentCore Code Interpreter vs Morph Cloud", "url": "https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-morph-cloud" }, { "json": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-celesto.json", "title": "Blaxel Sandboxes vs Celesto (formerly SmolVM)", "url": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-celesto" }, { "json": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-morph-cloud.json", "title": "Blaxel Sandboxes vs Morph Cloud", "url": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-morph-cloud" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-cloudflare-sandbox-sdk.json", "title": "Celesto (formerly SmolVM) vs Cloudflare Sandbox SDK", "url": "https://www.anchorterminal.com/compare/celesto-vs-cloudflare-sandbox-sdk" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-daytona.json", "title": "Celesto (formerly SmolVM) vs Daytona", "url": "https://www.anchorterminal.com/compare/celesto-vs-daytona" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-deltabox-lite.json", "title": "Celesto (formerly SmolVM) vs DeltaBox Lite", "url": "https://www.anchorterminal.com/compare/celesto-vs-deltabox-lite" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-deno-sandbox.json", "title": "Celesto (formerly SmolVM) vs Deno Sandbox", "url": "https://www.anchorterminal.com/compare/celesto-vs-deno-sandbox" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-e2b.json", "title": "Celesto (formerly SmolVM) vs E2B", "url": "https://www.anchorterminal.com/compare/celesto-vs-e2b" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-freestyle.json", "title": "Celesto (formerly SmolVM) vs Freestyle", "url": "https://www.anchorterminal.com/compare/celesto-vs-freestyle" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-instavm.json", "title": "Celesto (formerly SmolVM) vs InstaVM", "url": "https://www.anchorterminal.com/compare/celesto-vs-instavm" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-maritime.json", "title": "Celesto (formerly SmolVM) vs Maritime", "url": "https://www.anchorterminal.com/compare/celesto-vs-maritime" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-microsoft-execution-containers.json", "title": "Celesto (formerly SmolVM) vs Microsoft Execution Containers", "url": "https://www.anchorterminal.com/compare/celesto-vs-microsoft-execution-containers" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-modal-sandboxes.json", "title": "Celesto (formerly SmolVM) vs Modal Sandboxes", "url": "https://www.anchorterminal.com/compare/celesto-vs-modal-sandboxes" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-offscreen.json", "title": "Celesto (formerly SmolVM) vs Offscreen", "url": "https://www.anchorterminal.com/compare/celesto-vs-offscreen" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-perplexity-space.json", "title": "Celesto (formerly SmolVM) vs SPACE", "url": "https://www.anchorterminal.com/compare/celesto-vs-perplexity-space" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-runloop.json", "title": "Celesto (formerly SmolVM) vs Runloop Devboxes", "url": "https://www.anchorterminal.com/compare/celesto-vs-runloop" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-sandbox0.json", "title": "Celesto (formerly SmolVM) vs Sandbox0", "url": "https://www.anchorterminal.com/compare/celesto-vs-sandbox0" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-sprites.json", "title": "Celesto (formerly SmolVM) vs Sprites", "url": "https://www.anchorterminal.com/compare/celesto-vs-sprites" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-together-code-sandbox.json", "title": "Celesto (formerly SmolVM) vs Together Code Sandbox", "url": "https://www.anchorterminal.com/compare/celesto-vs-together-code-sandbox" }, { "json": "https://www.anchorterminal.com/compare/celesto-vs-vercel-sandbox.json", "title": "Celesto (formerly SmolVM) vs Vercel Sandbox", "url": "https://www.anchorterminal.com/compare/celesto-vs-vercel-sandbox" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-morph-cloud.json", "title": "Cloudflare Sandbox SDK vs Morph Cloud", "url": "https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-morph-cloud" }, { "json": "https://www.anchorterminal.com/compare/daytona-vs-morph-cloud.json", "title": "Daytona vs Morph Cloud", "url": "https://www.anchorterminal.com/compare/daytona-vs-morph-cloud" }, { "json": "https://www.anchorterminal.com/compare/deno-sandbox-vs-morph-cloud.json", "title": "Deno Sandbox vs Morph Cloud", "url": "https://www.anchorterminal.com/compare/deno-sandbox-vs-morph-cloud" }, { "json": "https://www.anchorterminal.com/compare/e2b-vs-morph-cloud.json", "title": "E2B vs Morph Cloud", "url": "https://www.anchorterminal.com/compare/e2b-vs-morph-cloud" }, { "json": "https://www.anchorterminal.com/compare/freestyle-vs-morph-cloud.json", "title": "Freestyle vs Morph Cloud", "url": "https://www.anchorterminal.com/compare/freestyle-vs-morph-cloud" }, { "json": "https://www.anchorterminal.com/compare/instavm-vs-morph-cloud.json", "title": "InstaVM vs Morph Cloud", "url": "https://www.anchorterminal.com/compare/instavm-vs-morph-cloud" }, { "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/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/modal-sandboxes-vs-morph-cloud.json", "title": "Modal Sandboxes vs Morph Cloud", "url": "https://www.anchorterminal.com/compare/modal-sandboxes-vs-morph-cloud" }, { "json": "https://www.anchorterminal.com/compare/morph-cloud-vs-offscreen.json", "title": "Morph Cloud vs Offscreen", "url": "https://www.anchorterminal.com/compare/morph-cloud-vs-offscreen" }, { "json": "https://www.anchorterminal.com/compare/morph-cloud-vs-perplexity-space.json", "title": "Morph Cloud vs SPACE", "url": "https://www.anchorterminal.com/compare/morph-cloud-vs-perplexity-space" }, { "json": "https://www.anchorterminal.com/compare/morph-cloud-vs-runloop.json", "title": "Morph Cloud vs Runloop Devboxes", "url": "https://www.anchorterminal.com/compare/morph-cloud-vs-runloop" }, { "json": "https://www.anchorterminal.com/compare/morph-cloud-vs-sandbox0.json", "title": "Morph Cloud vs Sandbox0", "url": "https://www.anchorterminal.com/compare/morph-cloud-vs-sandbox0" }, { "json": "https://www.anchorterminal.com/compare/morph-cloud-vs-sprites.json", "title": "Morph Cloud vs Sprites", "url": "https://www.anchorterminal.com/compare/morph-cloud-vs-sprites" }, { "json": "https://www.anchorterminal.com/compare/morph-cloud-vs-together-code-sandbox.json", "title": "Morph Cloud vs Together Code Sandbox", "url": "https://www.anchorterminal.com/compare/morph-cloud-vs-together-code-sandbox" }, { "json": "https://www.anchorterminal.com/compare/morph-cloud-vs-vercel-sandbox.json", "title": "Morph Cloud vs Vercel Sandbox", "url": "https://www.anchorterminal.com/compare/morph-cloud-vs-vercel-sandbox" }, { "json": "https://www.anchorterminal.com/compare/agent37-vs-celesto.json", "title": "Agent 37 Cloud vs Celesto (formerly SmolVM)", "url": "https://www.anchorterminal.com/compare/agent37-vs-celesto" }, { "json": "https://www.anchorterminal.com/compare/agent37-vs-morph-cloud.json", "title": "Agent 37 Cloud vs Morph Cloud", "url": "https://www.anchorterminal.com/compare/agent37-vs-morph-cloud" }, { "json": "https://www.anchorterminal.com/compare/deltabox-lite-vs-morph-cloud.json", "title": "DeltaBox Lite vs Morph Cloud", "url": "https://www.anchorterminal.com/compare/deltabox-lite-vs-morph-cloud" } ], "panel": null, "scores": [ { "by": 3, "celesto": 66, "edge": "celesto", "key": "reliability", "morph-cloud": 63, "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 13, "celesto": 85, "edge": "celesto", "key": "schema", "morph-cloud": 72, "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 8, "celesto": 69, "edge": "celesto", "key": "ergonomics", "morph-cloud": 61, "name": "Agent ergonomics", "weight": 13 }, { "by": 13, "celesto": 52, "edge": "celesto", "key": "security", "morph-cloud": 39, "name": "Security \u0026 auth", "weight": 14 }, { "by": 40, "celesto": 60, "edge": "celesto", "key": "payments", "morph-cloud": 20, "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 33, "celesto": 81, "edge": "celesto", "key": "maintenance", "morph-cloud": 48, "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 26, "celesto": 70, "edge": "celesto", "key": "transparency", "morph-cloud": 44, "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Celesto (formerly SmolVM) scores 68 (B) on agent readiness against Morph Cloud's 51.6 (D), and leads in every scored category. Both do code sandboxes.", "tasks": null, "tutorials": [], "verdicts": { "celesto": "Celesto runs each agent task in a local Firecracker or QEMU microVM with its own kernel, driven by a CLI with a stable JSON envelope and a Python SDK, free under Apache-2.0. It is pre-1.0, renamed from SmolVM on 19 September 2026, sends usage telemetry after a first-use notice, and leaves outbound networking open unless a mode is set.", "morph-cloud": "Pause and snapshot keep memory and running processes, and one call branches an instance into several copies. A public OpenAPI file covers 69 operations. Terms from Morph Labs, Inc. are published, but no privacy policy or security page was found, the free plan includes no compute credit, and the changelog holds one entry from November 2024." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/celesto-vs-morph-cloud", "json": "https://www.anchorterminal.com/compare/celesto-vs-morph-cloud.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/celesto-vs-morph-cloud.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/celesto-vs-morph-cloud.min.md" }, "markdown": "Celesto (formerly SmolVM) scores 68 (B) on agent readiness against Morph Cloud's 51.6 (D), and leads in every scored category. Both do code sandboxes.\n\n- Celesto (formerly SmolVM): grade B, 68/100, rank #298 of 1486. Markdown https://www.anchorterminal.com/tools/celesto.md · JSON https://www.anchorterminal.com/api/v1/tools/celesto.json\n- Morph Cloud: grade D, 51.6/100, rank #1014 of 1486. Markdown https://www.anchorterminal.com/tools/morph-cloud.md · JSON https://www.anchorterminal.com/api/v1/tools/morph-cloud.json\n- Best code execution sandboxes for AI agents: https://www.anchorterminal.com/best/code-sandboxes/index.md\n- All 231 sandboxes comparisons: https://www.anchorterminal.com/compare/code-sandboxes/index.md\n\n## Which one, for what\n\n### Celesto (formerly SmolVM) (B)\n\nGood for: Local microVM sandboxes for agent code, browsers and desktops on Linux and macOS, with a path to a hosted cloud.\n\nAhead on:\n- Schema \u0026 documentation, 85 against 72\n- Agent ergonomics, 69 against 61\n- Security \u0026 auth, 52 against 39\n- Payments \u0026 pricing, 60 against 20\n- Maintenance \u0026 community, 81 against 48\n- Transparency \u0026 trust, 70 against 44\n\nAlso in its favour:\n- No key needed to call it\n- Free to start without a card\n- Open source\n\nWatch for: Version 0.1.13 and declared pre-1.0 in SECURITY.md, with the TypeScript SDK an alpha installed from a GitHub tarball\n\n### Morph Cloud (D)\n\nGood for: Agents that need to checkpoint and fork a running machine with memory intact, for parallel attempts, evaluations or reinforcement learning rollouts.\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n\nWatch for: No privacy policy, DPA or subprocessor list found on morph.so or cloud.morph.so. The terms of 23 October 2025 are the only legal document\n\n\n## Why the edge\n\n### Payments \u0026 pricing: Celesto (formerly SmolVM) +40\n\n- Celesto (formerly SmolVM) (60): Read with the self-hosted rule, scoring the hosted option for the price lines. No x402, MPP or L402 (0 of 40). Celesto Cloud publishes hourly prices for six sizes without a login (20). A one-time $5 Micro credit needs no card, and the local SDK is free (20). The graded local SDK installs from PyPI and runs with no account, so an agent needs no signup (20). Cloud use needs a browser signup and a card top-up. Total 60.\n- Morph Cloud (20): No x402, MPP or L402 found in the docs or the OpenAPI file on 8 October (0). Per the 8 October check, the pricing page defines the Morph Compute Unit (1 vCPU-hour with 4 GB RAM-hours and 16 GB disk-hours, or 5 TB snapshot-hours), states a standard rate of $0.05 an MCU and lists plans at $0, $40 and $250 a month without a login. The terms of 23 October 2025 add per-second compute billing and 30 days' notice of price changes (20). The Free plan starts with 0 MCUs and says to purchase MCUs to use compute. The FAQ refers readers to the billing console for any free credits (0). Signup is in a browser, and the key creation route needs an existing session or key (0). 0+20+0+0 = 20.\n\n### Maintenance \u0026 community: Celesto (formerly SmolVM) +33\n\n- Celesto (formerly SmolVM) (81): 0.1.13 on PyPI on 5 November 2026, tagged 6 November (30). 22 PyPI releases in the 90 days to 6 November (20). Most open issues are filed by maintainers. Outside reports such as the thread-safety issue got replies, and several recent ones have none yet; pull-request reply times were not read (15 of 25). The Python SDK is current, the TypeScript SDK is an alpha not published to npm (8 of 15). uv and Cargo lock files, CodeQL and publish workflows, with run results unread (8 of 10). Total 81.\n- Morph Cloud (48): The Python SDK repository tagged v0.1.116 on 20 October 2026, a generated release that adds disk resizing to the SDK and CLI, 15 days before this check. pypi.org did not resolve on 4 November, so its upload date there is unconfirmed (30). Three tagged Python releases in the 90 days from 6 August 2026, v0.1.114 on 30 August, v0.1.115 on 1 September and v0.1.116 on 20 October. v0.1.115 changes only the version and the minimum Python version in `pyproject.toml`, a packaging-only release that counts half, so the count is two and a half, below three (0). Scored on the closed-service scale. The changelog is not kept, per the 8 October check. The terms give ops@morph.so and the status page support@morph.so. The two open pull requests on the Python SDK (1 April and 14 September 2026) had no comments on 8 October, and GitHub's pages answered 403 on 4 November (4). The Python SDK and CLI are current. The TypeScript SDK repository's newest tag is v0.0.19 from 2 October 2025 and its newest commit 6 October 2025, matching 0.0.20 on npm on 8 October (10). The Python repository has 18 unit test files, but its only workflow is a publish job run by hand, so no public CI run was found (4). 30+0+4+10+4 = 48.\n\n### Transparency \u0026 trust: Celesto (formerly SmolVM) +26\n\n- Celesto (formerly SmolVM) (70): Apache-2.0 in LICENSE and on PyPI (30). The privacy policy of 30 October 2026 links a subprocessor registry and describes the CLI telemetry in the same terms as the docs, but gives no retention periods beyond as long as necessary. Stopped cloud disks are kept 30 days per the pricing page (18 of 30). The changelog marks removals and the breaking rename, and the glossary lists older names still accepted, with no written deprecation policy (10 of 20). Telemetry is disclosed in the README, CLI reference and privacy policy, with three opt-outs, but it is on by default after the notice (16 of 20). Total 74.\n- Morph Cloud (44): The SDKs are Apache-2.0. The platform is closed, under Terms of Service last revised 23 October 2025 at cloud.morph.so/web/legal/terms-of-service, which name Morph Labs, Inc. of San Francisco, set California law and arbitration, and promise 15 days' notice of material changes (15). No privacy policy or DPA found. The terms say Morph staff do not access disk, memory or application data in instances except on a customer's time-bound request or by law, that such access is logged, that diagnostic artifacts are deleted per a retention schedule that is not published, and that usage telemetry is shared only aggregated or de-identified. The docs describe snapshot TTLs the customer sets and say Morph Actions data has no fixed retention period (8). No deprecation policy. The terms promise not to reduce core functionality materially during a committed billing term without a workaround or a refund, with no notice period for API changes. The OpenAPI file marks a few fields deprecated and keeps a legacy query alias, without dates (3). No subprocessor list or data location statement found (0). 15+8+3+0 = 26.\n\n### Schema \u0026 documentation: Celesto (formerly SmolVM) +13\n\n- Celesto (formerly SmolVM) (85): Read as an SDK and CLI. The repository ships an OpenAPI document for the local server (24 operations) and the cloud API (171 operations), from which the TypeScript client is generated (25). llms.txt at celesto.ai, plus Markdown docs in the repository (10). The README's runtime table says when to use each runtime, and the automation section says to prefer `exec` and keep `shell`, `ssh` and `desktop` for interactive work (14 of 20). Network modes are closed values (`open`, `off`, `public`, `restricted`) and the SDK takes typed keyword arguments, though `internet_settings` is a plain dict (11 of 15). Examples directory, a JSON envelope for every command and documented cloud error fields such as `required_scope`, without a full error catalogue (12 of 15). Dated changelog and tags, pre-1.0 (13 of 15). Total 85.\n- Morph Cloud (72): Per the 8 October check, not re-read on 4 November. Public OpenAPI 3.1 file at cloud.morph.so/api/openapi.json with 52 paths and 69 operations (25). llms.txt and llms-full.txt under /docs (10). 67 of 69 operations have a description, many of one line, while the guides explain pause against stop and devboxes against instances (14). Enums for TTL action, HTTP auth mode and instance status, with patterns and ranges on names, ports and page sizes. Metadata is a free string map (12). Guides give Python, TypeScript and CLI examples. 37 operations document only a 422 beyond success, the error schema is `detail` with an optional `error_code`, and no error-code reference was found (8). The changelog page has one entry from 19 November 2024 and says it is not a complete history. The API path has no version and the SDK tags have no release notes (3). 25+10+14+12+8+3 = 72.\n\n### Security \u0026 auth: Celesto (formerly SmolVM) +13\n\n- Celesto (formerly SmolVM) (52): Framework reading for local software. No credential is needed for local use, and the local API server and dashboard each require a bearer token, and cloud keys carry named permissions (22 of 30). Each computer has its own guest kernel, browser and display access uses capability URLs with a read-only option, and raw VNC is off. Against that, outbound networking is open by default and the restricting modes are opt-in (12 of 20). The security doc warns against giving connection URLs to a model as page content, but there is no guidance on treating command or page output as untrusted (5 of 15). `computer logs` shows startup output, with no audit log of commands (5 of 15). SECURITY.md with GitHub private vulnerability reporting and a supported-versions table, Security sections in the changelog, no security.txt, bug bounty or certification (8 of 20). Total 52.\n- Morph Cloud (39): Per the 8 October check of the docs, not re-read on 4 November. Bearer API keys bound to an organisation, listed with prefix and last-used time and deletable through the API. The docs mention key permissions in the dashboard without describing any. Devbox agent tokens are bound to one devbox with seven named scopes but do not expire. Short-lived delegation tokens exist for services (22). No read-only key for the instance API and no confirmation on stop or delete. Exposed HTTP services default to `auth_mode: none`, and the `api_key` mode asks callers to send the account's Morph API key to the service URL (8). Each instance is a full VM, but the docs name no isolation technology and no egress controls were found (5). Key last-used times, an organisation SSH key audit route and usage routes exist. No audit log of API calls found (4). security.txt returned 404 on cloud.morph.so and www.morph.so on 8 October. No disclosure policy, bug bounty or certification found. The terms list security controls and breach notification and offer \"available third-party security attestations (e.g., SOC reports)\" on request, without naming one (0). On 4 November osv.dev listed no advisory for `morphcloud` and the 2025 and 2026 CVE records named no Morph product. 22+8+5+4+0 = 39.\n\n### Agent ergonomics: Celesto (formerly SmolVM) +8\n\n- Celesto (formerly SmolVM) (69): A CLI and SDK add no tool definitions to an agent's context. Collected command output is capped at 8 MiB with streaming as the alternative (18 of 25). `computer list`, `logs --follow` and name lookups, with little filtering (10 of 20). JSON errors carry a recovery command where Celesto has one, and cloud errors carry stable codes, operation and computer context and recovery fields since 0.1.7 (18 of 20). State-changing cloud requests are never replayed automatically and computers are addressed by unique names, but there are no idempotency keys (10 of 20). `with Computer()` creates and deletes a computer with no parameters, with Python and an alpha TypeScript SDK (13 of 15). Total 69.\n- Morph Cloud (61): Per the 8 October check of the OpenAPI file and docs, not re-read on 4 November. Instance and snapshot objects are bounded, list calls take a limit and a metadata filter, and there is no field selection. Exec returns stdout and stderr whole (15). `/api/instance/list` and `/api/snapshot/list` take `page` and `limit` (default 50, maximum 1,000) and a metadata filter. The older list routes are unpaginated (16). Newer routes document 400, 401, 402, 403, 404, 409 and 503 with a coded error body. Most routes document only 422, and no error reference was found (10). `Idempotency-Key` exists on API key creation only. Snapshot, branch, pause and reboot return `Retry-After` on a 503 refused before dispatch (8). Starting an instance needs only a snapshot id. Python SDK and CLI are current. The TypeScript SDK is 0.0.20 from 6 October 2025, the version the docs pin (12). 15+16+10+8+12 = 61.\n\n## Score by category\n\n| Category | Weight | Celesto (formerly SmolVM) | Morph Cloud | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 66 | 63 | Celesto (formerly SmolVM) +3 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 85 | 72 | Celesto (formerly SmolVM) +13 |\n| Agent ergonomics | 13% (16.2 this run) | 69 | 61 | Celesto (formerly SmolVM) +8 |\n| Security \u0026 auth | 14% (17.5 this run) | 52 | 39 | Celesto (formerly SmolVM) +13 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 60 | 20 | Celesto (formerly SmolVM) +40 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 81 | 48 | Celesto (formerly SmolVM) +33 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 70 | 44 | Celesto (formerly SmolVM) +26 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **68 · B** | **51.6 · D** | |\n\n## Facts side by side\n\n| Fact | Celesto (formerly SmolVM) | Morph Cloud |\n| --- | --- | --- |\n| Kind | SDK + MCP | HTTP API |\n| Vendor | Celesto AI, Inc. | Morph Labs |\n| Hosted endpoint | no (local only) | `https://cloud.morph.so/api` |\n| Transports | | HTTP |\n| Auth | None | API key |\n| Pricing | Freemium | Pay per use |\n| x402 | no | no |\n| Licence | Apache-2.0 | Proprietary hosted service under Morph Labs, Inc.'s Terms of Service (last revised 23 October 2025). The Python and TypeScript SDKs are Apache-2.0 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-11-05 | 2026-10-20 |\n| Terms last updated | 2026-10-30 | not read yet |\n| Privacy policy last updated | 2026-10-30 | no document linked |\n| Customer content may train models | not found in the text | not read yet |\n| Terms restrict automated access | not found in the text | not read yet |\n| Terms restrict benchmarking | not found in the text | 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 | not found in the text | not read yet |\n| Popularity | 1.1k stars, 699 PyPI/wk | 3 stars, 339 npm/wk |\n\n## How the scores have moved\n\n### Celesto (formerly SmolVM)\n\nNo score change since it was listed.\n\n### Morph Cloud\n\n- +0.5 on 4 November 2026: correction, time\n- -0.1 on 28 October 2026: correction\n- +0.4 on 27 October 2026: checklist\n\n## Verdicts\n\n**Celesto (formerly SmolVM).** Celesto runs each agent task in a local Firecracker or QEMU microVM with its own kernel, driven by a CLI with a stable JSON envelope and a Python SDK, free under Apache-2.0. It is pre-1.0, renamed from SmolVM on 19 September 2026, sends usage telemetry after a first-use notice, and leaves outbound networking open unless a mode is set.\n\n**Morph Cloud.** Pause and snapshot keep memory and running processes, and one call branches an instance into several copies. A public OpenAPI file covers 69 operations. Terms from Morph Labs, Inc. are published, but no privacy policy or security page was found, the free plan includes no compute credit, and the changelog holds one entry from November 2024.\n\n## Before you call either\n\n### Celesto (formerly SmolVM)\n\n1. Pass `--json` to every `celesto` command and branch on `ok` and `exit_code`, not on printed text\n2. Create computers with unique names and delete them by exact name when the job ends, including after failures\n3. Set `internet_settings={\"mode\": \"off\"}` or `restricted` for untrusted code, since the default is open\n4. Set CELESTO_NO_TELEMETRY=1 in unattended runs if usage events must not leave the machine\n5. Never paste browser or display connection URLs into model context; possession of the URL grants control\n\n### Morph Cloud\n\n1. Set `ttl_seconds` and `ttl_action` when starting an instance. Nothing in the docs stops an instance with no TTL from billing MCUs\n2. Pass `auth_mode: api_key` when exposing an HTTP service. The default is `none`, which makes the URL public\n3. Enable `wake_on_ssh` before calling exec on an instance that may be paused. There is no separate exec wake setting\n4. Use `/api/instance/list` and `/api/snapshot/list` with `page` and `limit` (default 50, maximum 1,000). The plain list routes return everything\n5. On a 503 from snapshot, branch, pause or reboot, wait for the `Retry-After` value before repeating the call\n\n## Questions\n\n### Which is better for AI agents, Celesto (formerly SmolVM) or Morph Cloud?\n\nCelesto (formerly SmolVM) scores 68 (B) on agent readiness against Morph Cloud's 51.6 (D), and leads in every scored category.\n\n### Can an agent call Celesto (formerly SmolVM) and Morph Cloud without installing anything?\n\nNo hosted endpoint is listed for Celesto (formerly SmolVM). Morph Cloud has a hosted endpoint at https://cloud.morph.so/api.\n\n### Are Celesto (formerly SmolVM) and Morph Cloud open source?\n\nCelesto (formerly SmolVM) is open source (Apache-2.0). No open-source release is listed for Morph Cloud.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/celesto-vs-morph-cloud.json, and with the fewest tokens: https://www.anchorterminal.com/compare/celesto-vs-morph-cloud.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"celesto\", \"b\": \"morph-cloud\"}`. From a terminal: `anchor compare celesto morph-cloud`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/celesto.json and https://www.anchorterminal.com/api/v1/tools/morph-cloud.json\n\n## Other comparisons with Celesto (formerly SmolVM) or Morph Cloud\n\n- [Amazon Bedrock AgentCore Code Interpreter vs Celesto (formerly SmolVM)](https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-celesto.md)\n- [Amazon Bedrock AgentCore Code Interpreter vs Morph Cloud](https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-morph-cloud.md)\n- [Blaxel Sandboxes vs Celesto (formerly SmolVM)](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-celesto.md)\n- [Blaxel Sandboxes vs Morph Cloud](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-morph-cloud.md)\n- [Celesto (formerly SmolVM) vs Cloudflare Sandbox SDK](https://www.anchorterminal.com/compare/celesto-vs-cloudflare-sandbox-sdk.md)\n- [Celesto (formerly SmolVM) vs Daytona](https://www.anchorterminal.com/compare/celesto-vs-daytona.md)\n- [Celesto (formerly SmolVM) vs DeltaBox Lite](https://www.anchorterminal.com/compare/celesto-vs-deltabox-lite.md)\n- [Celesto (formerly SmolVM) vs Deno Sandbox](https://www.anchorterminal.com/compare/celesto-vs-deno-sandbox.md)\n- [Celesto (formerly SmolVM) vs E2B](https://www.anchorterminal.com/compare/celesto-vs-e2b.md)\n- [Celesto (formerly SmolVM) vs Freestyle](https://www.anchorterminal.com/compare/celesto-vs-freestyle.md)\n- [Celesto (formerly SmolVM) vs InstaVM](https://www.anchorterminal.com/compare/celesto-vs-instavm.md)\n- [Celesto (formerly SmolVM) vs Maritime](https://www.anchorterminal.com/compare/celesto-vs-maritime.md)\n- [Celesto (formerly SmolVM) vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/celesto-vs-microsoft-execution-containers.md)\n- [Celesto (formerly SmolVM) vs Modal Sandboxes](https://www.anchorterminal.com/compare/celesto-vs-modal-sandboxes.md)\n- [Celesto (formerly SmolVM) vs Offscreen](https://www.anchorterminal.com/compare/celesto-vs-offscreen.md)\n- [Celesto (formerly SmolVM) vs SPACE](https://www.anchorterminal.com/compare/celesto-vs-perplexity-space.md)\n- [Celesto (formerly SmolVM) vs Runloop Devboxes](https://www.anchorterminal.com/compare/celesto-vs-runloop.md)\n- [Celesto (formerly SmolVM) vs Sandbox0](https://www.anchorterminal.com/compare/celesto-vs-sandbox0.md)\n- [Celesto (formerly SmolVM) vs Sprites](https://www.anchorterminal.com/compare/celesto-vs-sprites.md)\n- [Celesto (formerly SmolVM) vs Together Code Sandbox](https://www.anchorterminal.com/compare/celesto-vs-together-code-sandbox.md)\n- [Celesto (formerly SmolVM) vs Vercel Sandbox](https://www.anchorterminal.com/compare/celesto-vs-vercel-sandbox.md)\n- [Cloudflare Sandbox SDK vs Morph Cloud](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-morph-cloud.md)\n- [Daytona vs Morph Cloud](https://www.anchorterminal.com/compare/daytona-vs-morph-cloud.md)\n- [Deno Sandbox vs Morph Cloud](https://www.anchorterminal.com/compare/deno-sandbox-vs-morph-cloud.md)\n- [E2B vs Morph Cloud](https://www.anchorterminal.com/compare/e2b-vs-morph-cloud.md)\n- [Freestyle vs Morph Cloud](https://www.anchorterminal.com/compare/freestyle-vs-morph-cloud.md)\n- [InstaVM vs Morph Cloud](https://www.anchorterminal.com/compare/instavm-vs-morph-cloud.md)\n- [Maritime vs Morph Cloud](https://www.anchorterminal.com/compare/maritime-vs-morph-cloud.md)\n- [Microsoft Execution Containers vs Morph Cloud](https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-morph-cloud.md)\n- [Modal Sandboxes vs Morph Cloud](https://www.anchorterminal.com/compare/modal-sandboxes-vs-morph-cloud.md)\n- [Morph Cloud vs Offscreen](https://www.anchorterminal.com/compare/morph-cloud-vs-offscreen.md)\n- [Morph Cloud vs SPACE](https://www.anchorterminal.com/compare/morph-cloud-vs-perplexity-space.md)\n- [Morph Cloud vs Runloop Devboxes](https://www.anchorterminal.com/compare/morph-cloud-vs-runloop.md)\n- [Morph Cloud vs Sandbox0](https://www.anchorterminal.com/compare/morph-cloud-vs-sandbox0.md)\n- [Morph Cloud vs Sprites](https://www.anchorterminal.com/compare/morph-cloud-vs-sprites.md)\n- [Morph Cloud vs Together Code Sandbox](https://www.anchorterminal.com/compare/morph-cloud-vs-together-code-sandbox.md)\n- [Morph Cloud vs Vercel Sandbox](https://www.anchorterminal.com/compare/morph-cloud-vs-vercel-sandbox.md)\n- [Agent 37 Cloud vs Celesto (formerly SmolVM)](https://www.anchorterminal.com/compare/agent37-vs-celesto.md)\n- [Agent 37 Cloud vs Morph Cloud](https://www.anchorterminal.com/compare/agent37-vs-morph-cloud.md)\n- [DeltaBox Lite vs Morph Cloud](https://www.anchorterminal.com/compare/deltabox-lite-vs-morph-cloud.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 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Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Celesto (formerly SmolVM) B 68", "Morph Cloud D 51.6", "scores" ], "h1": "Celesto (formerly SmolVM) vs Morph Cloud", "image": "https://www.anchorterminal.com/assets/og/default.png", "path": "/compare/celesto-vs-morph-cloud", "published": "2026-10-01", "section": "tools", "title": "Celesto vs Morph Cloud for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-11-07", "url": "https://www.anchorterminal.com/compare/celesto-vs-morph-cloud" }, "tokens": { "markdown": 5750, "slim": 3380 }, "version": 1 }