{
  "data": {
    "a": {
      "slug": "agent37",
      "name": "Agent 37 Cloud",
      "vendor": "Agent 37 Inc.",
      "vendorUrl": "https://www.agent37.com/cloud",
      "kind": "http-api",
      "category": "code-sandboxes",
      "summary": "Agent 37 Cloud hosts persistent Linux sandboxes for agent harnesses such as Hermes, OpenClaw, Claude Code and Codex, or a custom Docker image. A REST API creates instances, runs commands, manages files and sends messages to the agent inside.",
      "url": "https://www.anchorterminal.com/tools/agent37",
      "markdownUrl": "https://www.anchorterminal.com/tools/agent37.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/agent37.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/agent37.json",
      "repo": "https://github.com/agent37-platform/templates",
      "license": "Proprietary service under Agent 37's terms of service. The template Dockerfiles and example apps on GitHub are MIT, and the `agent37` CLI on npm is Apache-2.0",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.agent37.com/v1",
      "packages": [
        {
          "registry": "npm",
          "name": "agent37"
        }
      ],
      "auth": "api-key",
      "authNotes": "Self-serve. A person signs up, adds a card and creates an `sk_live_` key in the dashboard, where the full key is shown once. The key is workspace-wide and goes in `Authorization: Bearer` on https://api.agent37.com/v1 and in the `X-Agent37-Key` header on each instance URL. A key can carry an IP allowlist of up to 20 addresses or CIDR ranges. No scopes, read-only keys or key-creation API were found. Browsers reach an instance port through a signed URL that lasts 60 seconds to seven days and can't be revoked.",
      "pricing": "usage",
      "pricingNotes": "Prepaid balance, metered per minute. $0.80 a vCPU-month, $0.70 a GB-month of memory and $0.09 a GB-month of disk on a 730-hour month, so 2 vCPU and 4 GB with a 4 GB disk is $4.76 a month running and $0.36 a month asleep or stopped. Performance instances on dedicated cores cost four times the compute rate. Adding a card grants a one-time $5 credit with nothing charged, limited to one 2 vCPU, 4 GB instance until the first top-up. Top-ups are $5 to $10,000 through Stripe, and automatic top-up is on by default after the first one. Managed model, search and integration calls bill at cost from the same balance (https://www.agent37.com/docs/agents-api/billing, checked 2026-10-08).",
      "priceSummary": "$0.0011 / vCPU-hr",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the docs (llms-full.txt), the pricing page or the terms (checked 2026-10-08). The wallet is topped up by card through Stripe in the dashboard.",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 74,
        "pypiWeekly": null,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://www.agent37.com/docs",
      "llmsTxt": "https://www.agent37.com/docs/llms.txt",
      "capabilities": [
        "sandbox.persist",
        "sandbox.code",
        "sandbox.fs",
        "sandbox.browser"
      ],
      "tags": [
        "hosted",
        "usage",
        "llms-txt",
        "cli",
        "docker",
        "yc",
        "new"
      ],
      "lastRelease": "2026-10-05",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 46.1,
        "grade": "D",
        "agentReady": false,
        "rank": 564,
        "ranked": true,
        "rankOf": 629,
        "categoryRank": 10,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 60,
          "maintenance": 65,
          "payments": 20,
          "reliability": 27,
          "schema": 57,
          "security": 49,
          "transparency": 56
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-08"
        },
        "negative": 0,
        "verdict": "Instances keep their disk until deleted, sleep when idle and wake on the next request, with compute published at $0.80 a vCPU-month and stable error codes on both APIs. The product launched on 29 September 2026. No status page, OpenAPI file, SDK library or published rate limits were found, and the starter credit needs a card.",
        "bestFor": "A product that gives each end user a long-lived agent machine that is idle most of the day and needs a harness preinstalled.",
        "strengths": [
          "Disk persists until delete, and auto-sleep checkpoints an idle instance so that only disk bills ($0.09 a GB-month)",
          "Per-unit prices are public. A 2 vCPU, 4 GB instance running all month is $4.76, metered per minute",
          "Stable error codes on both APIs, with `param` and `hint` fields and written retry guidance for each transient code",
          "llms.txt, a 637 KB llms-full.txt and a Markdown copy of each of the 49 docs pages",
          "API keys take an IP allowlist of up to 20 addresses or ranges, and each instance has its own managed-spend cap"
        ],
        "weaknesses": [
          "No status page was found. status.agent37.com returns 404, and the terms promise no uptime level",
          "No OpenAPI file, SDK library or public changelog was found. The npm package `agent37` is a CLI",
          "No API rate limits are published beyond one on-demand backup per instance every 15 minutes",
          "One workspace-wide key controls every instance. No scopes or read-only keys were found",
          "The $5 starter credit needs a card on file, and keys and top-ups exist only in the dashboard",
          "The launch is dated 29 September 2026 and the public templates repository starts on 2 October 2026"
        ],
        "agentNotes": [
          "Send the key as `Authorization: Bearer` to api.agent37.com and as `X-Agent37-Key` to the instance URL. The Bearer form on instance URLs is deprecated",
          "Poll `GET /v1/health` on the instance URL for `\"healthy\": true` before the first message. `status: running` only means the machine is up",
          "Check whether `error` is a string before reading `error.code`. Transport errors are flat strings, and a failed turn returns 200 with `status: \"failed\"`",
          "Don't blindly retry an exec that timed out after 13 minutes. The command keeps running, so a retry starts a second copy",
          "Set `auto_sleep: true`, keep anything that must survive a sleep in a file, and allow a first-byte timeout of three minutes for wakes"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "D",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 46.1
          }
        ],
        "editorialScores": {
          "ergonomics": 60,
          "maintenance": 65,
          "payments": 20,
          "reliability": 27,
          "schema": 57,
          "security": 49,
          "transparency": 56
        },
        "provenanceScore": 56
      },
      "connect": {
        "http": "curl -X POST https://api.agent37.com/v1/instances \\\n  -H \"Authorization: Bearer sk_live_...\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{ \"budget\": { \"credit_micros\": 1000000 } }'"
      },
      "letme": {
        "capability": "https://letme.dev/sandbox.persist",
        "tool": "https://letme.dev/agent37"
      },
      "area": "agent-runtime",
      "unitPrices": [
        {
          "item": "vCPU",
          "unit": "vcpu-hour",
          "usd": 0.001096,
          "note": "$0.80 a vCPU-month over 730 hours. Memory extra at $0.70 a GB-month, and Performance instances cost four times the compute rate"
        },
        {
          "item": "Default instance (2 vCPU, 4 GB, 4 GB disk)",
          "unit": "session-hour",
          "usd": 0.00652,
          "note": "$4.76 a month running, metered per minute. $0.36 a month asleep or stopped"
        },
        {
          "item": "Disk",
          "unit": "gb-month",
          "usd": 0.09,
          "note": "Billed until the instance is deleted. $0.03 a GB-month on compressed bytes once parked in cold storage"
        }
      ],
      "provenance": {
        "legalEntity": "Agent 37 Inc.",
        "domain": "agent37.com",
        "domainRegistered": "2025-04-29",
        "endpointOnVendorDomain": true,
        "terms": "https://www.agent37.com/terms",
        "privacy": "https://www.agent37.com/privacy",
        "statusPage": "",
        "changelog": "",
        "securityTxt": "none",
        "checked": "2026-10-08",
        "notes": [
          "The terms (last updated 4 August 2026) name Agent 37 Inc. under New York law. The privacy policy (last updated 1 September 2026) names Agent 37 Inc. and, in its representative section, Agent37.com Inc.",
          "The Hosting API answers at api.agent37.com and instances at {id}.agent37.app, a second domain the docs describe as the vendor's.",
          "www.agent37.com/.well-known/security.txt returns 404. The site footer has a Report abuse link and no disclosure policy was found.",
          "status.agent37.com returns 404 (deployment not found) and no status page is linked from the site or docs. No changelog page was found.",
          "RDAP for agent37.com gives a registration date of 2025-04-29 and NameCheap, Inc. as registrar.",
          "trust.agent37.com answered 403 to our reader, so the trust centre is unread."
        ],
        "score": 56
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/agent37.json",
      "live": {
        "slug": "agent37",
        "probe": {
          "target": "https://api.agent37.com/v1",
          "method": "get",
          "lastAt": "2026-10-08T18:20:23.772016566Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 85,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 83,
          "p95ms24h": 364,
          "samples24h": 33,
          "samples30d": 33,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 33,
              "ok": 33
            }
          ]
        },
        "versions": [
          {
            "registry": "npm",
            "name": "agent37",
            "version": "0.4.0",
            "seenAt": "2026-10-08T15:56:42.792052264Z"
          }
        ],
        "githubStars": 0,
        "npmWeekly": 74,
        "securityTxt": {
          "url": "https://agent37.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-08T15:38:33.079951688Z"
        },
        "updatedAt": "2026-10-08T18:20:23.772016566Z"
      }
    },
    "answer": "Blaxel Sandboxes scores 60.7 (C) on agent readiness against Agent 37 Cloud's 46.1 (D), and leads in every scored category.",
    "b": {
      "slug": "blaxel-sandboxes",
      "name": "Blaxel Sandboxes",
      "vendor": "Blaxel",
      "vendorUrl": "https://blaxel.ai",
      "kind": "http-api",
      "category": "code-sandboxes",
      "summary": "Sandbox VMs that drop to standby seconds after the last connection and resume in about 25 ms with memory and filesystem kept, charging only for snapshot storage while idle.",
      "url": "https://www.anchorterminal.com/tools/blaxel-sandboxes",
      "markdownUrl": "https://www.anchorterminal.com/tools/blaxel-sandboxes.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/blaxel-sandboxes.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/blaxel-sandboxes.json",
      "repo": "https://github.com/blaxel-ai/sdk-python",
      "license": "MIT",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.blaxel.ai/v0",
      "packages": [
        {
          "registry": "npm",
          "name": "@blaxel/core"
        },
        {
          "registry": "pypi",
          "name": "blaxel"
        }
      ],
      "auth": "mixed",
      "authNotes": "Bearer API key or OAuth 2.0 token on api.blaxel.ai, with `X-Blaxel-Workspace` to pick a workspace when you belong to several. API keys can be set never to expire. OAuth client-credentials tokens last 2 hours. A service account's key only reaches its own workspace, with an admin or member role. The SDKs read `BL_API_KEY` and `BL_WORKSPACE`. The per-sandbox MCP server takes the same Bearer key.",
      "pricing": "usage",
      "pricingNotes": "Active sandboxes cost $0.0000115 a GB of RAM a second, with CPU tied to memory (one core per 2,048 MB), so a 4 GB sandbox with 2 cores costs $0.1656 an hour. Standby has no compute charge, only $0.20 a GB-month for memory and filesystem snapshots, and images cost $0.045 a GB-month. Up to $200 of free credits for new accounts. Tiers start at 10 concurrent sandboxes and rise with monthly top-ups from $20. Email support is $800 a month plus 3 per cent of usage, dedicated support $1,600 plus 10 per cent (https://blaxel.ai/pricing).",
      "priceSummary": "$0.1656 / session-hr",
      "where": "hosted",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 27,
        "npmWeekly": 353025,
        "pypiWeekly": 74970,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.blaxel.ai",
      "llmsTxt": "https://docs.blaxel.ai/llms.txt",
      "capabilities": [
        "sandbox.code",
        "sandbox.fs",
        "sandbox.persist"
      ],
      "tags": [
        "hosted",
        "mcp",
        "llms-txt",
        "python",
        "typescript",
        "go"
      ],
      "lastRelease": "2026-09-30",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 60.7,
        "grade": "C",
        "agentReady": false,
        "rank": 343,
        "ranked": true,
        "rankOf": 629,
        "categoryRank": 8,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 70,
          "maintenance": 85,
          "payments": 40,
          "reliability": 35,
          "schema": 80,
          "security": 64,
          "transparency": 65
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "No compute charge in standby, only $0.20 a GB-month of snapshot storage. 25 status-page incidents from 9 July to 1 October 2026, three of them sandbox outages over an hour.",
        "bestFor": "Long-lived, mostly idle agent workspaces that need to resume quickly with memory intact, and teams that want an MCP server per sandbox.",
        "strengths": [
          "No compute charge in standby, only $0.20 a GB-month of snapshot storage",
          "MicroVM per sandbox with domain allow and deny lists that can be enforced at network level",
          "An MCP server in every sandbox over streamable HTTP, 18 tools",
          "Public OpenAPI for the sandbox API, llms.txt and an error-code reference with retryable flags",
          "Up to $200 of free credits, and account creation through Stripe Projects"
        ],
        "weaknesses": [
          "25 status-page incidents from 9 July to 1 October 2026, three of them sandbox outages over an hour",
          "No published request-rate limits, 429 guidance or SLA",
          "Domain filtering and secret injection are marked public preview, and egress is open by default",
          "No security.txt, and the privacy policy lives on a portal that blocks automated readers",
          "Billed by memory, and about half of it goes to the writable tmpfs layer"
        ],
        "agentNotes": [
          "Close WebSocket and terminal connections when done. An open connection keeps the sandbox active and billed",
          "Set a TTL or idle expiry on throwaway sandboxes. The default is to keep them",
          "Set `forbiddenDomains` or an allow list at creation, with `network.firewall` for tools that ignore proxy settings. Both can only be set when the sandbox is created",
          "Retry only on WORKLOAD_UNAVAILABLE. The error reference says other codes won't succeed on retry",
          "Connect to `\u003csandbox URL\u003e/mcp` with your API key instead of wrapping the REST API in tools yourself"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 2,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 60.7
          }
        ],
        "editorialScores": {
          "ergonomics": 70,
          "maintenance": 85,
          "payments": 40,
          "reliability": 35,
          "schema": 80,
          "security": 64,
          "transparency": 60
        },
        "provenanceScore": 70
      },
      "connect": {
        "install": "pip install blaxel  # or npm i @blaxel/core",
        "http": "curl -X POST https://api.blaxel.ai/v0/sandboxes -H \"Authorization: Bearer $BL_API_KEY\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"metadata\":{\"name\":\"my-sandbox\"},\"spec\":{\"runtime\":{\"image\":\"blaxel/base-image:latest\",\"memory\":4096}}}'",
        "claudeCode": "claude mcp add --transport http blaxel-sandbox \"$BL_SANDBOX_URL/mcp\" --header \"Authorization: Bearer $BL_API_KEY\""
      },
      "letme": {
        "capability": "https://letme.dev/sandbox.code",
        "tool": "https://letme.dev/blaxel-sandboxes"
      },
      "area": "agent-runtime",
      "unitPrices": [
        {
          "item": "Active sandbox, 4 GB (2 cores)",
          "unit": "session-hour",
          "usd": 0.1656,
          "note": "$0.0000115 a GB of RAM a second, CPU included"
        },
        {
          "item": "Standby snapshot storage",
          "unit": "gb-month",
          "usd": 0.2
        },
        {
          "item": "Image storage",
          "unit": "gb-month",
          "usd": 0.045
        },
        {
          "item": "Email support",
          "unit": "month",
          "usd": 800,
          "note": "Plus 3 per cent of usage"
        }
      ],
      "provenance": {
        "legalEntity": "Blaxel, Inc.",
        "domain": "blaxel.ai",
        "domainRegistered": "",
        "endpointOnVendorDomain": true,
        "terms": "https://blaxel.ai/legal/terms/2025-12-10-blaxel-terms-and-conditions.pdf",
        "privacy": "https://blaxel.ai/privacy",
        "statusPage": "https://status.blaxel.ai",
        "changelog": "https://docs.blaxel.ai/changelog",
        "securityTxt": "none",
        "checked": "2026-10-01",
        "notes": [
          "The standard terms (amended 10 December 2025) name Blaxel, Inc., formerly Beamlit, Inc., a Delaware corporation, under California law with venue in San Francisco.",
          "www.blaxel.ai/.well-known/security.txt returns 404.",
          "The status page runs on incident.io. Its incident feed lists 25 incidents from 9 July to 1 October 2026, including a critical workload outage in us-was-1 on 1 October, and shows 99.48 per cent uptime for Sandboxes over July to October.",
          "blaxel.ai/privacy links to a privacy policy on compliance.blaxel.ai, which disallows automated fetching.",
          "The .ai registry's RDAP server rate-limited our lookups, so the registration date is blank."
        ],
        "score": 70
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/blaxel-sandboxes.json",
      "live": {
        "slug": "blaxel-sandboxes",
        "probe": {
          "target": "https://api.blaxel.ai/v0",
          "method": "get",
          "lastAt": "2026-10-08T18:20:26.137914629Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 43,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 67,
          "p95ms24h": 135,
          "samples24h": 272,
          "samples30d": 1924,
          "days": [
            {
              "date": "2026-10-01",
              "probes": 109,
              "ok": 109
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-05",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-06",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-07",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-08",
              "probes": 208,
              "ok": 208
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.blaxel.ai",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-08T18:21:50.537751407Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "blaxel-ai/sdk-python",
            "version": "v0.4.1",
            "released": "2026-07-28",
            "seenAt": "2026-10-08T16:02:54.624869774Z"
          },
          {
            "registry": "npm",
            "name": "@blaxel/core",
            "version": "0.3.25",
            "seenAt": "2026-10-08T16:02:47.128460348Z"
          },
          {
            "registry": "pypi",
            "name": "blaxel",
            "version": "0.4.13",
            "released": "2026-09-30",
            "seenAt": "2026-10-08T16:02:51.171485941Z"
          }
        ],
        "githubStars": 25,
        "npmWeekly": 337131,
        "pypiWeekly": 60966,
        "securityTxt": {
          "url": "https://blaxel.ai/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-08T15:38:50.937265777Z"
        },
        "llmsTxt": {
          "url": "https://docs.blaxel.ai/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-08T14:00:08.340091362Z"
        },
        "domain": {
          "domain": "blaxel.ai",
          "registered": "2025-02-17",
          "source": "https://rdap.identitydigital.services/rdap/domain/blaxel.ai",
          "checkedAt": "2026-10-04T13:09:20.159771679Z"
        },
        "pages": [
          {
            "url": "https://docs.blaxel.ai/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-08T18:18:21.73257692Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "a17f1aa593ad"
          },
          {
            "url": "https://blaxel.ai/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-08T18:15:46.024429017Z",
            "changedAt": "2026-10-06T16:05:59.939080102Z",
            "fingerprint": "0f440b1f9584"
          },
          {
            "url": "https://blaxel.ai/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-08T18:15:48.139290595Z",
            "changedAt": "2026-10-06T16:06:02.039405395Z",
            "fingerprint": "b0717e646ac8"
          }
        ],
        "updatedAt": "2026-10-08T18:21:50.537751407Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Agent 37 Inc.",
        "b": "Blaxel",
        "name": "Vendor"
      },
      {
        "a": "https://api.agent37.com/v1",
        "b": "https://api.blaxel.ai/v0",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP",
        "b": "HTTP, Streamable HTTP",
        "name": "Transports"
      },
      {
        "a": "API key",
        "b": "OAuth or key",
        "name": "Auth"
      },
      {
        "a": "Pay per use",
        "b": "Pay per use",
        "name": "Pricing"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Proprietary service under Agent 37's terms of service. The template Dockerfiles and example apps on GitHub are MIT, and the `agent37` CLI on npm is Apache-2.0",
        "b": "MIT",
        "name": "Licence"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "2026-10-05",
        "b": "2026-09-30",
        "name": "Last release"
      },
      {
        "a": "2026-08-04",
        "b": "",
        "name": "Terms last updated"
      },
      {
        "a": "2026-09-01",
        "b": "no date given",
        "name": "Privacy policy last updated"
      },
      {
        "a": "not found in the text",
        "b": "",
        "name": "Customer content may train models"
      },
      {
        "a": "not found in the text",
        "b": "",
        "name": "Terms restrict automated access"
      },
      {
        "a": "not found in the text",
        "b": "",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "not found in the text",
        "b": "",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "not found in the text",
        "b": "",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "74 npm/wk",
        "b": "27 stars, 353k npm/wk, 75k PyPI/wk",
        "name": "Popularity"
      },
      {
        "a": "none",
        "b": "2/5 (2)",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "Blaxel Sandboxes scores 60.7 (C) on agent readiness against Agent 37 Cloud's 46.1 (D), and leads in every scored category.",
        "question": "Which is better for AI agents, Agent 37 Cloud or Blaxel Sandboxes?"
      },
      {
        "answer": "Agent 37 Cloud needs an API key. Blaxel Sandboxes takes an API key or an OAuth sign-in.",
        "question": "Do Agent 37 Cloud and Blaxel Sandboxes need an API key?"
      },
      {
        "answer": "Yes. Agent 37 Cloud has a hosted endpoint at https://api.agent37.com/v1 and Blaxel Sandboxes at https://api.blaxel.ai/v0.",
        "question": "Can an agent call Agent 37 Cloud and Blaxel Sandboxes without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": null,
        "also": null,
        "goodFor": "A product that gives each end user a long-lived agent machine that is idle most of the day and needs a harness preinstalled.",
        "slug": "agent37",
        "watchFor": "No status page was found. status.agent37.com returns 404, and the terms promise no uptime level"
      },
      {
        "aheadOn": [
          "Reliability, 35 against 27",
          "Schema \u0026 documentation, 80 against 57",
          "Agent ergonomics, 70 against 60",
          "Security \u0026 auth, 64 against 49",
          "Payments \u0026 pricing, 40 against 20",
          "Maintenance \u0026 community, 85 against 65",
          "Transparency \u0026 trust, 65 against 56"
        ],
        "also": null,
        "goodFor": "Long-lived, mostly idle agent workspaces that need to resume quickly with memory intact, and teams that want an MCP server per sandbox.",
        "slug": "blaxel-sandboxes",
        "watchFor": "25 status-page incidents from 9 July to 1 October 2026, three of them sandbox outages over an hour"
      }
    ],
    "job": {
      "capability": "sandbox.persist",
      "name": "Sandbox persist"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-cloudflare-sandbox-sdk.json",
        "title": "Blaxel Sandboxes vs Cloudflare Sandbox SDK",
        "url": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-cloudflare-sandbox-sdk"
      },
      {
        "json": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-daytona.json",
        "title": "Blaxel Sandboxes vs Daytona",
        "url": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-daytona"
      },
      {
        "json": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-e2b.json",
        "title": "Blaxel Sandboxes vs E2B",
        "url": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-e2b"
      },
      {
        "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/blaxel-sandboxes-vs-modal-sandboxes.json",
        "title": "Blaxel Sandboxes vs Modal Sandboxes",
        "url": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-modal-sandboxes"
      },
      {
        "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/blaxel-sandboxes-vs-runloop.json",
        "title": "Blaxel Sandboxes vs Runloop Devboxes",
        "url": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-runloop"
      },
      {
        "json": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-vercel-sandbox.json",
        "title": "Blaxel Sandboxes vs Vercel Sandbox",
        "url": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-vercel-sandbox"
      },
      {
        "json": "https://www.anchorterminal.com/compare/agent37-vs-cloudflare-sandbox-sdk.json",
        "title": "Agent 37 Cloud vs Cloudflare Sandbox SDK",
        "url": "https://www.anchorterminal.com/compare/agent37-vs-cloudflare-sandbox-sdk"
      },
      {
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      },
      {
        "json": "https://www.anchorterminal.com/compare/agent37-vs-modal-sandboxes.json",
        "title": "Agent 37 Cloud vs Modal Sandboxes",
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        "title": "Agent 37 Cloud vs Morph Cloud",
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      {
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        "title": "Agent 37 Cloud vs Runloop Devboxes",
        "url": "https://www.anchorterminal.com/compare/agent37-vs-runloop"
      },
      {
        "json": "https://www.anchorterminal.com/compare/agent37-vs-vercel-sandbox.json",
        "title": "Agent 37 Cloud vs Vercel Sandbox",
        "url": "https://www.anchorterminal.com/compare/agent37-vs-vercel-sandbox"
      }
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    "scores": [
      {
        "agent37": 27,
        "blaxel-sandboxes": 35,
        "by": 8,
        "edge": "blaxel-sandboxes",
        "key": "reliability",
        "name": "Reliability",
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "agent37": 57,
        "blaxel-sandboxes": 80,
        "by": 23,
        "edge": "blaxel-sandboxes",
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "weight": 13
      },
      {
        "agent37": 60,
        "blaxel-sandboxes": 70,
        "by": 10,
        "edge": "blaxel-sandboxes",
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "weight": 13
      },
      {
        "agent37": 49,
        "blaxel-sandboxes": 64,
        "by": 15,
        "edge": "blaxel-sandboxes",
        "key": "security",
        "name": "Security \u0026 auth",
        "weight": 14
      },
      {
        "agent37": 20,
        "blaxel-sandboxes": 40,
        "by": 20,
        "edge": "blaxel-sandboxes",
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "agent37": 65,
        "blaxel-sandboxes": 85,
        "by": 20,
        "edge": "blaxel-sandboxes",
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "weight": 7
      },
      {
        "agent37": 56,
        "blaxel-sandboxes": 65,
        "by": 9,
        "edge": "blaxel-sandboxes",
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "weight": 7
      }
    ],
    "summary": "Blaxel Sandboxes scores 60.7 (C) on agent readiness against Agent 37 Cloud's 46.1 (D), and leads in every scored category. Both do sandbox persist.",
    "verdicts": {
      "agent37": "Instances keep their disk until deleted, sleep when idle and wake on the next request, with compute published at $0.80 a vCPU-month and stable error codes on both APIs. The product launched on 29 September 2026. No status page, OpenAPI file, SDK library or published rate limits were found, and the starter credit needs a card.",
      "blaxel-sandboxes": "No compute charge in standby, only $0.20 a GB-month of snapshot storage. 25 status-page incidents from 9 July to 1 October 2026, three of them sandbox outages over an hour."
    }
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  "markdown": "Blaxel Sandboxes scores 60.7 (C) on agent readiness against Agent 37 Cloud's 46.1 (D), and leads in every scored category. Both do sandbox persist.\n\n- Agent 37 Cloud: grade D, 46.1/100, rank #564 of 629. Markdown https://www.anchorterminal.com/tools/agent37.md · JSON https://www.anchorterminal.com/api/v1/tools/agent37.json\n- Blaxel Sandboxes: grade C, 60.7/100, rank #343 of 629. Markdown https://www.anchorterminal.com/tools/blaxel-sandboxes.md · JSON https://www.anchorterminal.com/api/v1/tools/blaxel-sandboxes.json\n\n## Which one, for what\n\n### Agent 37 Cloud (D)\n\nGood for: A product that gives each end user a long-lived agent machine that is idle most of the day and needs a harness preinstalled.\n\nWatch for: No status page was found. status.agent37.com returns 404, and the terms promise no uptime level\n\n### Blaxel Sandboxes (C)\n\nGood for: Long-lived, mostly idle agent workspaces that need to resume quickly with memory intact, and teams that want an MCP server per sandbox.\n\nAhead on:\n- Reliability, 35 against 27\n- Schema \u0026 documentation, 80 against 57\n- Agent ergonomics, 70 against 60\n- Security \u0026 auth, 64 against 49\n- Payments \u0026 pricing, 40 against 20\n- Maintenance \u0026 community, 85 against 65\n- Transparency \u0026 trust, 65 against 56\n\nWatch for: 25 status-page incidents from 9 July to 1 October 2026, three of them sandbox outages over an hour\n\n\n## Score by category\n\n| Category | Weight | Agent 37 Cloud | Blaxel Sandboxes | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 27 | 35 | Blaxel Sandboxes +8 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 57 | 80 | Blaxel Sandboxes +23 |\n| Agent ergonomics | 13% (16.2 this run) | 60 | 70 | Blaxel Sandboxes +10 |\n| Security \u0026 auth | 14% (17.5 this run) | 49 | 64 | Blaxel Sandboxes +15 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 40 | Blaxel Sandboxes +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 65 | 85 | Blaxel Sandboxes +20 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 56 | 65 | Blaxel Sandboxes +9 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **46.1 · D** | **60.7 · C** | |\n\n## Facts side by side\n\n| Fact | Agent 37 Cloud | Blaxel Sandboxes |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Agent 37 Inc. | Blaxel |\n| Hosted endpoint | `https://api.agent37.com/v1` | `https://api.blaxel.ai/v0` |\n| Transports | HTTP | HTTP, Streamable HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Pay per use | Pay per use |\n| x402 | no | no |\n| Licence | Proprietary service under Agent 37's terms of service. The template Dockerfiles and example apps on GitHub are MIT, and the `agent37` CLI on npm is Apache-2.0 | MIT |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-05 | 2026-09-30 |\n| Terms last updated | 2026-08-04 |  |\n| Privacy policy last updated | 2026-09-01 | no date given |\n| Customer content may train models | not found in the text |  |\n| Terms restrict automated access | not found in the text |  |\n| Terms restrict benchmarking | not found in the text |  |\n| Terms or service can change without notice | not found in the text |  |\n| Arbitration or class-action waiver | not found in the text |  |\n| Popularity | 74 npm/wk | 27 stars, 353k npm/wk, 75k PyPI/wk |\n| Agent reviews | none | 2/5 (2) |\n\n## Verdicts\n\n**Agent 37 Cloud.** Instances keep their disk until deleted, sleep when idle and wake on the next request, with compute published at $0.80 a vCPU-month and stable error codes on both APIs. The product launched on 29 September 2026. No status page, OpenAPI file, SDK library or published rate limits were found, and the starter credit needs a card.\n\n**Blaxel Sandboxes.** No compute charge in standby, only $0.20 a GB-month of snapshot storage. 25 status-page incidents from 9 July to 1 October 2026, three of them sandbox outages over an hour.\n\n## Before you call either\n\n### Agent 37 Cloud\n\n1. Send the key as `Authorization: Bearer` to api.agent37.com and as `X-Agent37-Key` to the instance URL. The Bearer form on instance URLs is deprecated\n2. Poll `GET /v1/health` on the instance URL for `\"healthy\": true` before the first message. `status: running` only means the machine is up\n3. Check whether `error` is a string before reading `error.code`. Transport errors are flat strings, and a failed turn returns 200 with `status: \"failed\"`\n4. Don't blindly retry an exec that timed out after 13 minutes. The command keeps running, so a retry starts a second copy\n5. Set `auto_sleep: true`, keep anything that must survive a sleep in a file, and allow a first-byte timeout of three minutes for wakes\n\n### Blaxel Sandboxes\n\n1. Close WebSocket and terminal connections when done. An open connection keeps the sandbox active and billed\n2. Set a TTL or idle expiry on throwaway sandboxes. The default is to keep them\n3. Set `forbiddenDomains` or an allow list at creation, with `network.firewall` for tools that ignore proxy settings. Both can only be set when the sandbox is created\n4. Retry only on WORKLOAD_UNAVAILABLE. The error reference says other codes won't succeed on retry\n5. Connect to `\u003csandbox URL\u003e/mcp` with your API key instead of wrapping the REST API in tools yourself\n\n## Questions\n\n### Which is better for AI agents, Agent 37 Cloud or Blaxel Sandboxes?\n\nBlaxel Sandboxes scores 60.7 (C) on agent readiness against Agent 37 Cloud's 46.1 (D), and leads in every scored category.\n\n### Do Agent 37 Cloud and Blaxel Sandboxes need an API key?\n\nAgent 37 Cloud needs an API key. Blaxel Sandboxes takes an API key or an OAuth sign-in.\n\n### Can an agent call Agent 37 Cloud and Blaxel Sandboxes without installing anything?\n\nYes. Agent 37 Cloud has a hosted endpoint at https://api.agent37.com/v1 and Blaxel Sandboxes at https://api.blaxel.ai/v0.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/agent37-vs-blaxel-sandboxes.json, and with the fewest tokens: https://www.anchorterminal.com/compare/agent37-vs-blaxel-sandboxes.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"agent37\", \"b\": \"blaxel-sandboxes\"}`. From a terminal: `anchor compare agent37 blaxel-sandboxes`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/agent37.json and https://www.anchorterminal.com/api/v1/tools/blaxel-sandboxes.json\n\n## Other comparisons with Agent 37 Cloud or Blaxel Sandboxes\n\n- [Blaxel Sandboxes vs Cloudflare Sandbox SDK](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-cloudflare-sandbox-sdk.md)\n- [Blaxel Sandboxes vs Daytona](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-daytona.md)\n- [Blaxel Sandboxes vs E2B](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-e2b.md)\n- [Blaxel Sandboxes vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-microsoft-execution-containers.md)\n- [Blaxel Sandboxes vs Modal Sandboxes](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-modal-sandboxes.md)\n- [Blaxel Sandboxes vs Morph Cloud](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-morph-cloud.md)\n- [Blaxel Sandboxes vs Runloop Devboxes](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-runloop.md)\n- [Blaxel Sandboxes vs Vercel Sandbox](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-vercel-sandbox.md)\n- [Agent 37 Cloud vs Cloudflare Sandbox SDK](https://www.anchorterminal.com/compare/agent37-vs-cloudflare-sandbox-sdk.md)\n- [Agent 37 Cloud vs Daytona](https://www.anchorterminal.com/compare/agent37-vs-daytona.md)\n- [Agent 37 Cloud vs E2B](https://www.anchorterminal.com/compare/agent37-vs-e2b.md)\n- [Agent 37 Cloud vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/agent37-vs-microsoft-execution-containers.md)\n- [Agent 37 Cloud vs Modal Sandboxes](https://www.anchorterminal.com/compare/agent37-vs-modal-sandboxes.md)\n- [Agent 37 Cloud vs Morph Cloud](https://www.anchorterminal.com/compare/agent37-vs-morph-cloud.md)\n- [Agent 37 Cloud vs Runloop Devboxes](https://www.anchorterminal.com/compare/agent37-vs-runloop.md)\n- [Agent 37 Cloud vs Vercel Sandbox](https://www.anchorterminal.com/compare/agent37-vs-vercel-sandbox.md)\n",
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    "title": "Agent 37 Cloud vs Blaxel Sandboxes for AI agents, D 46.1 vs C 60.7",
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