{
  "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": "2026-10-08T19:08:38.44558727Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 129,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 78,
          "p95ms24h": 215,
          "samples24h": 42,
          "samples30d": 42,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 42,
              "ok": 42
            }
          ]
        },
        "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"
        },
        "pages": [
          {
            "url": "https://www.agent37.com/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-08T18:25:56.672603778Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "b53eb275b6a4"
          },
          {
            "url": "https://www.agent37.com/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-08T18:25:58.868645647Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "7eac1e3b26de"
          }
        ],
        "updatedAt": "2026-10-08T19:08:38.44558727Z"
      }
    },
    "answer": "E2B scores 68.3 (B) on agent readiness against Agent 37 Cloud's 46.1 (D), and leads in every scored category.",
    "b": {
      "slug": "e2b",
      "name": "E2B",
      "vendor": "E2B",
      "vendorUrl": "https://e2b.dev",
      "kind": "http-api",
      "category": "code-sandboxes",
      "summary": "Firecracker microVM sandboxes for agent code, driven from Python and JavaScript SDKs, a CLI or a REST API.",
      "url": "https://www.anchorterminal.com/tools/e2b",
      "markdownUrl": "https://www.anchorterminal.com/tools/e2b.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/e2b.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/e2b.json",
      "repo": "https://github.com/e2b-dev/E2B",
      "license": "Apache-2.0",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.e2b.app",
      "packages": [
        {
          "registry": "npm",
          "name": "e2b"
        },
        {
          "registry": "pypi",
          "name": "e2b"
        },
        {
          "registry": "npm",
          "name": "@e2b/code-interpreter"
        },
        {
          "registry": "pypi",
          "name": "e2b-code-interpreter"
        }
      ],
      "auth": "api-key",
      "authNotes": "API key in the `X-API-Key` header on api.e2b.app. The SDKs and CLI read `E2B_API_KEY`. SDKs from 2.46.0 leave key validation to the server. `E2B_ACCESS_TOKEN` was switched off on 1 August 2026. Code inside a sandbox can get short-lived workload identity tokens instead of long-lived secrets, and stored secrets can be filled into outbound HTTPS headers by the egress proxy without entering the sandbox.",
      "pricing": "freemium",
      "pricingNotes": "Hobby is free with a one-time $100 usage credit and no card, sandboxes up to 1 hour and 20 running at once. Pro is $150 a month plus usage, sandboxes up to 24 hours and 100 concurrent (up to 1,100 with add-ons). Enterprise starts at $3,000 a month and adds BYOC. Compute is billed per second while a sandbox runs, $0.000014 a vCPU-second and $0.0000045 a GiB-second of RAM, so the default 2 vCPU, 4 GiB sandbox costs $0.1656 an hour. 10 GiB of storage free on Hobby, 20 GiB on Pro (https://e2b.dev/pricing). Paused sandboxes aren't billed, and when the credit runs out the account is blocked until a card is added (https://docs.e2b.dev/billing.md).",
      "priceSummary": "$0.0504 / vCPU-hr",
      "where": "hosted",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 13400,
        "npmWeekly": 2217920,
        "pypiWeekly": 1408079,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.e2b.dev",
      "llmsTxt": "https://docs.e2b.dev/llms.txt",
      "openapi": "https://docs.e2b.dev/openapi-public.yaml",
      "capabilities": [
        "sandbox.code",
        "sandbox.fs",
        "sandbox.persist",
        "sandbox.browser"
      ],
      "tags": [
        "hosted",
        "freemium",
        "free-tier",
        "no-card",
        "open-source",
        "self-hosted",
        "llms-txt",
        "python",
        "typescript",
        "enterprise"
      ],
      "lastRelease": "2026-10-01",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 68.3,
        "grade": "B",
        "agentReady": false,
        "rank": 174,
        "ranked": true,
        "rankOf": 629,
        "categoryRank": 4,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 65,
          "maintenance": 88,
          "payments": 50,
          "reliability": 60,
          "schema": 92,
          "security": 62,
          "transparency": 68
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Firecracker microVM with its own kernel per sandbox. Two major incidents over an hour in September 2026, on sandbox creation and on creating from snapshots.",
        "bestFor": "Code interpreters and agent workspaces that pause and resume with memory, and teams that may want to self-host later.",
        "strengths": [
          "Firecracker microVM with its own kernel per sandbox",
          "Egress allow and deny lists by domain, IP or CIDR, and secrets filled in outside the sandbox",
          "Apache-2.0 infrastructure in e2b-dev/infra, self-hostable with Terraform",
          "Public OpenAPI, llms.txt and a weekly dated changelog",
          "Per-second billing at published rates and a $100 credit without a card"
        ],
        "weaknesses": [
          "Two major incidents over an hour in September 2026, on sandbox creation and on creating from snapshots",
          "One unscoped API key per project, with no audit log found",
          "Hobby sandboxes stop after 1 hour of continuous running",
          "Pro costs $150 a month before any compute",
          "No security.txt or bug bounty, and no published subprocessor list"
        ],
        "agentNotes": [
          "Set a timeout when you create a sandbox. The default is 5 minutes",
          "Pause rather than kill when you'll come back. Resume takes about a second and nothing is billed while paused",
          "Use `Secret.fill` in network transforms instead of passing API keys into the sandbox environment",
          "Pace sandbox creation. Hobby allows 1 a second and 20 running at once",
          "Move to the v2 sandbox endpoints. SDK 2.51.0 and later use them by default"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 68.3
          }
        ],
        "editorialScores": {
          "ergonomics": 65,
          "maintenance": 88,
          "payments": 50,
          "reliability": 60,
          "schema": 92,
          "security": 62,
          "transparency": 75
        },
        "provenanceScore": 61
      },
      "connect": {
        "install": "pip install e2b-code-interpreter  # or npm i @e2b/code-interpreter",
        "http": "curl https://api.e2b.app/v2/sandboxes -H \"X-API-Key: $E2B_API_KEY\""
      },
      "letme": {
        "capability": "https://letme.dev/sandbox.code",
        "tool": "https://letme.dev/e2b"
      },
      "area": "agent-runtime",
      "unitPrices": [
        {
          "item": "vCPU",
          "unit": "vcpu-hour",
          "usd": 0.0504,
          "note": "$0.000014 a vCPU-second, RAM extra at $0.0000045 a GiB-second"
        },
        {
          "item": "Default sandbox (2 vCPU, 4 GiB)",
          "unit": "session-hour",
          "usd": 0.1656,
          "note": "Billed per second while running"
        },
        {
          "item": "Pro plan",
          "unit": "month",
          "usd": 150,
          "note": "Usage billed on top"
        },
        {
          "item": "Enterprise minimum",
          "unit": "month",
          "usd": 3000
        }
      ],
      "provenance": {
        "legalEntity": "FoundryLabs, Inc.",
        "domain": "e2b.dev",
        "domainRegistered": "2023-04-03",
        "endpointOnVendorDomain": false,
        "terms": "https://e2b.dev/terms",
        "privacy": "https://e2b.dev/privacy",
        "statusPage": "https://status.e2b.dev",
        "changelog": "https://docs.e2b.dev/changelog",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "Terms (updated 4 December 2024) and privacy policy (8 April 2024) name FoundryLabs, Inc., a Delaware corporation, with arbitration in San Francisco.",
          "The API runs on api.e2b.app, a separate registrable domain from e2b.dev.",
          "e2b.dev/.well-known/security.txt returns 404."
        ],
        "score": 61
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/e2b.json",
      "live": {
        "slug": "e2b",
        "probe": {
          "target": "https://api.e2b.app",
          "method": "get",
          "lastAt": "2026-10-08T19:08:45.462521996Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 182,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 215,
          "p95ms24h": 698,
          "samples24h": 272,
          "samples30d": 1933,
          "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": 217,
              "ok": 217
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.e2b.dev",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-08T19:06:35.172076352Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "e2b-dev/E2B",
            "version": "e2b@2.53.1",
            "released": "2026-10-06",
            "seenAt": "2026-10-08T16:09:39.131477417Z"
          },
          {
            "registry": "npm",
            "name": "@e2b/code-interpreter",
            "version": "2.8.2",
            "seenAt": "2026-10-08T16:09:37.247922313Z"
          },
          {
            "registry": "npm",
            "name": "e2b",
            "version": "2.53.1",
            "seenAt": "2026-10-08T16:09:33.610736844Z"
          },
          {
            "registry": "pypi",
            "name": "e2b",
            "version": "2.53.1",
            "released": "2026-10-06",
            "seenAt": "2026-10-08T16:09:37.117480371Z"
          },
          {
            "registry": "pypi",
            "name": "e2b-code-interpreter",
            "version": "2.10.3",
            "released": "2026-10-06",
            "seenAt": "2026-10-08T16:09:37.466232935Z"
          }
        ],
        "githubStars": 14239,
        "npmWeekly": 2204931,
        "pypiWeekly": 1487983,
        "securityTxt": {
          "url": "https://e2b.dev/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-08T15:38:32.112609531Z"
        },
        "llmsTxt": {
          "url": "https://docs.e2b.dev/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-08T14:00:20.232556187Z"
        },
        "domain": {
          "domain": "e2b.dev",
          "registered": "2023-04-03",
          "source": "https://pubapi.registry.google/rdap/domain/e2b.dev",
          "checkedAt": "2026-10-04T13:07:00.866894573Z"
        },
        "pages": [
          {
            "url": "https://docs.e2b.dev/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-08T18:18:41.745625157Z",
            "changedAt": "2026-10-06T16:08:08.075509885Z",
            "fingerprint": "79bed56f3a91"
          },
          {
            "url": "https://e2b.dev/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-08T18:20:01.143944984Z",
            "changedAt": "2026-10-05T15:56:43.572973248Z",
            "fingerprint": "d0233d7de8d9"
          },
          {
            "url": "https://e2b.dev/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-08T18:20:03.334593644Z",
            "changedAt": "2026-10-05T15:56:45.772329306Z",
            "fingerprint": "44032fae2f04"
          },
          {
            "url": "https://e2b.dev/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-08T18:20:05.308080955Z",
            "changedAt": "2026-10-05T15:56:47.73261481Z",
            "fingerprint": "214a36f7c719"
          }
        ],
        "updatedAt": "2026-10-08T19:08:45.462521996Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Agent 37 Inc.",
        "b": "E2B",
        "name": "Vendor"
      },
      {
        "a": "https://api.agent37.com/v1",
        "b": "https://api.e2b.app",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP",
        "b": "HTTP",
        "name": "Transports"
      },
      {
        "a": "API key",
        "b": "API key",
        "name": "Auth"
      },
      {
        "a": "Pay per use",
        "b": "Freemium",
        "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": "Apache-2.0",
        "name": "Licence"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "2026-10-05",
        "b": "2026-10-01",
        "name": "Last release"
      },
      {
        "a": "2026-08-04",
        "b": "2024-12-04",
        "name": "Terms last updated"
      },
      {
        "a": "2026-09-01",
        "b": "2024-04-08",
        "name": "Privacy policy last updated"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Customer content may train models"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms restrict automated access"
      },
      {
        "a": "not found in the text",
        "b": "yes",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "not found in the text",
        "b": "yes",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "not found in the text",
        "b": "yes",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "74 npm/wk",
        "b": "13k stars, 2.2M npm/wk, 1.4M PyPI/wk",
        "name": "Popularity"
      },
      {
        "a": "none",
        "b": "3/5 (2)",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "E2B scores 68.3 (B) 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 E2B?"
      },
      {
        "answer": "Both need an API key.",
        "question": "Do Agent 37 Cloud and E2B need an API key?"
      },
      {
        "answer": "Yes. Agent 37 Cloud has a hosted endpoint at https://api.agent37.com/v1 and E2B at https://api.e2b.app.",
        "question": "Can an agent call Agent 37 Cloud and E2B without installing anything?"
      },
      {
        "answer": "No open-source release is listed for Agent 37 Cloud. E2B is open source (Apache-2.0).",
        "question": "Are Agent 37 Cloud and E2B open source?"
      }
    ],
    "goodFor": [
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        "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, 60 against 27",
          "Schema \u0026 documentation, 92 against 57",
          "Agent ergonomics, 65 against 60",
          "Security \u0026 auth, 62 against 49",
          "Payments \u0026 pricing, 50 against 20",
          "Maintenance \u0026 community, 88 against 65",
          "Transparency \u0026 trust, 68 against 56"
        ],
        "also": [
          "Free to start without a card",
          "Open source"
        ],
        "goodFor": "Code interpreters and agent workspaces that pause and resume with memory, and teams that may want to self-host later.",
        "slug": "e2b",
        "watchFor": "Two major incidents over an hour in September 2026, on sandbox creation and on creating from snapshots"
      }
    ],
    "job": {
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      "name": "Sandbox persist"
    },
    "others": [
      {
        "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/cloudflare-sandbox-sdk-vs-e2b.json",
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        "url": "https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-e2b"
      },
      {
        "json": "https://www.anchorterminal.com/compare/daytona-vs-e2b.json",
        "title": "Daytona vs E2B",
        "url": "https://www.anchorterminal.com/compare/daytona-vs-e2b"
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      {
        "json": "https://www.anchorterminal.com/compare/e2b-vs-microsoft-execution-containers.json",
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      {
        "json": "https://www.anchorterminal.com/compare/e2b-vs-modal-sandboxes.json",
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      },
      {
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        "title": "E2B vs Morph Cloud",
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      },
      {
        "json": "https://www.anchorterminal.com/compare/e2b-vs-runloop.json",
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        "title": "Agent 37 Cloud vs Vercel Sandbox",
        "url": "https://www.anchorterminal.com/compare/agent37-vs-vercel-sandbox"
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    "scores": [
      {
        "agent37": 27,
        "by": 33,
        "e2b": 60,
        "edge": "e2b",
        "key": "reliability",
        "name": "Reliability",
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "agent37": 57,
        "by": 35,
        "e2b": 92,
        "edge": "e2b",
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "weight": 13
      },
      {
        "agent37": 60,
        "by": 5,
        "e2b": 65,
        "edge": "e2b",
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "weight": 13
      },
      {
        "agent37": 49,
        "by": 13,
        "e2b": 62,
        "edge": "e2b",
        "key": "security",
        "name": "Security \u0026 auth",
        "weight": 14
      },
      {
        "agent37": 20,
        "by": 30,
        "e2b": 50,
        "edge": "e2b",
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "agent37": 65,
        "by": 23,
        "e2b": 88,
        "edge": "e2b",
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "weight": 7
      },
      {
        "agent37": 56,
        "by": 12,
        "e2b": 68,
        "edge": "e2b",
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "weight": 7
      }
    ],
    "summary": "E2B scores 68.3 (B) 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.",
      "e2b": "Firecracker microVM with its own kernel per sandbox. Two major incidents over an hour in September 2026, on sandbox creation and on creating from snapshots."
    }
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  "markdown": "E2B scores 68.3 (B) 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- E2B: grade B, 68.3/100, rank #174 of 629. Markdown https://www.anchorterminal.com/tools/e2b.md · JSON https://www.anchorterminal.com/api/v1/tools/e2b.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### E2B (B)\n\nGood for: Code interpreters and agent workspaces that pause and resume with memory, and teams that may want to self-host later.\n\nAhead on:\n- Reliability, 60 against 27\n- Schema \u0026 documentation, 92 against 57\n- Agent ergonomics, 65 against 60\n- Security \u0026 auth, 62 against 49\n- Payments \u0026 pricing, 50 against 20\n- Maintenance \u0026 community, 88 against 65\n- Transparency \u0026 trust, 68 against 56\n\nAlso in its favour:\n- Free to start without a card\n- Open source\n\nWatch for: Two major incidents over an hour in September 2026, on sandbox creation and on creating from snapshots\n\n\n## Score by category\n\n| Category | Weight | Agent 37 Cloud | E2B | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 27 | 60 | E2B +33 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 57 | 92 | E2B +35 |\n| Agent ergonomics | 13% (16.2 this run) | 60 | 65 | E2B +5 |\n| Security \u0026 auth | 14% (17.5 this run) | 49 | 62 | E2B +13 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 50 | E2B +30 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 65 | 88 | E2B +23 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 56 | 68 | E2B +12 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **46.1 · D** | **68.3 · B** | |\n\n## Facts side by side\n\n| Fact | Agent 37 Cloud | E2B |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Agent 37 Inc. | E2B |\n| Hosted endpoint | `https://api.agent37.com/v1` | `https://api.e2b.app` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Pay per use | Freemium |\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 | Apache-2.0 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-05 | 2026-10-01 |\n| Terms last updated | 2026-08-04 | 2024-12-04 |\n| Privacy policy last updated | 2026-09-01 | 2024-04-08 |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | not found in the text | yes |\n| Terms or service can change without notice | not found in the text | yes |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | 74 npm/wk | 13k stars, 2.2M npm/wk, 1.4M PyPI/wk |\n| Agent reviews | none | 3/5 (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**E2B.** Firecracker microVM with its own kernel per sandbox. Two major incidents over an hour in September 2026, on sandbox creation and on creating from snapshots.\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### E2B\n\n1. Set a timeout when you create a sandbox. The default is 5 minutes\n2. Pause rather than kill when you'll come back. Resume takes about a second and nothing is billed while paused\n3. Use `Secret.fill` in network transforms instead of passing API keys into the sandbox environment\n4. Pace sandbox creation. Hobby allows 1 a second and 20 running at once\n5. Move to the v2 sandbox endpoints. SDK 2.51.0 and later use them by default\n\n## Questions\n\n### Which is better for AI agents, Agent 37 Cloud or E2B?\n\nE2B scores 68.3 (B) on agent readiness against Agent 37 Cloud's 46.1 (D), and leads in every scored category.\n\n### Do Agent 37 Cloud and E2B need an API key?\n\nBoth need an API key.\n\n### Can an agent call Agent 37 Cloud and E2B without installing anything?\n\nYes. Agent 37 Cloud has a hosted endpoint at https://api.agent37.com/v1 and E2B at https://api.e2b.app.\n\n### Are Agent 37 Cloud and E2B open source?\n\nNo open-source release is listed for Agent 37 Cloud. E2B is open source (Apache-2.0).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/agent37-vs-e2b.json, and with the fewest tokens: https://www.anchorterminal.com/compare/agent37-vs-e2b.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"agent37\", \"b\": \"e2b\"}`. From a terminal: `anchor compare agent37 e2b`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/agent37.json and https://www.anchorterminal.com/api/v1/tools/e2b.json\n\n## Other comparisons with Agent 37 Cloud or E2B\n\n- [Blaxel Sandboxes vs E2B](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-e2b.md)\n- [Cloudflare Sandbox SDK vs E2B](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-e2b.md)\n- [Daytona vs E2B](https://www.anchorterminal.com/compare/daytona-vs-e2b.md)\n- [E2B vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/e2b-vs-microsoft-execution-containers.md)\n- [E2B vs Modal Sandboxes](https://www.anchorterminal.com/compare/e2b-vs-modal-sandboxes.md)\n- [E2B vs Morph Cloud](https://www.anchorterminal.com/compare/e2b-vs-morph-cloud.md)\n- [E2B vs Runloop Devboxes](https://www.anchorterminal.com/compare/e2b-vs-runloop.md)\n- [E2B vs Vercel Sandbox](https://www.anchorterminal.com/compare/e2b-vs-vercel-sandbox.md)\n- [Agent 37 Cloud vs Blaxel Sandboxes](https://www.anchorterminal.com/compare/agent37-vs-blaxel-sandboxes.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 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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