{
  "data": {
    "a": {
      "slug": "sprites",
      "name": "Sprites",
      "vendor": "Fly.io",
      "vendorUrl": "https://fly.io",
      "kind": "http-api",
      "category": "code-sandboxes",
      "summary": "Sprites are hosted Linux microVMs from Fly.io that keep their disk between runs, pause when idle and wake on request. They are driven through a REST API, a CLI, four SDKs or a hosted MCP server.",
      "url": "https://www.anchorterminal.com/tools/sprites",
      "markdownUrl": "https://www.anchorterminal.com/tools/sprites.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/sprites.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/sprites.json",
      "repo": "https://github.com/superfly/sprites-js",
      "license": "Proprietary service under the Fly.io Terms of Service. The JavaScript, Go, Python and Elixir SDKs are MIT",
      "transports": [
        "http"
      ],
      "packages": [
        {
          "registry": "npm",
          "name": "@fly/sprites"
        },
        {
          "registry": "pypi",
          "name": "sprites-py"
        }
      ],
      "auth": "api-key",
      "authNotes": "A bearer token created at sprites.dev/account after signing in with a Fly.io account, sent as `Authorization: Bearer \u003ctoken\u003e` to `https://api.sprites.dev`. Tokens belong to an organisation, and no scopes or expiry were found in the reviewed docs. The CLI signs in through a browser with `sprite org auth` or takes a token with `sprite auth setup --token`. The hosted MCP server uses OAuth with a token restricted by default to a name prefix and a capped number of Sprites.",
      "pricing": "usage",
      "pricingNotes": "$0.0385 a CPU-hour and $0.021875 a GB-hour of memory while a Sprite is active, hot storage at $0.000683 a GB-hour while awake and cold storage at $0.000027 a GB-hour while data is kept. Nothing is charged per Sprite or for bandwidth. New organisations get a $30 trial credit, and whether it needs a card was not established. The product page also describes monthly plans with allowances, of which Hero ($100) and Mythic ($2,000) are priced (https://fly.io/sprites/, https://fly.io/pricing/, checked 2026-10-08).",
      "priceSummary": "$0.0385 / vCPU-hr",
      "where": "local",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the Sprites docs, the OpenAPI document or the pricing page (checked 2026-10-08).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 157565,
        "pypiWeekly": 58695,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://docs.fly.io/sprites",
      "llmsTxt": "https://docs.fly.io/llms.txt",
      "openapi": "https://docs.fly.io/sprites/api/openapi.json",
      "capabilities": [
        "sandbox.code",
        "sandbox.fs",
        "sandbox.persist"
      ],
      "tags": [
        "hosted",
        "usage-priced",
        "microvm",
        "persistent",
        "checkpoints",
        "openapi",
        "cli",
        "typescript",
        "python",
        "go",
        "elixir",
        "mcp",
        "llms-txt",
        "status-page"
      ],
      "lastRelease": "2026-10-06",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 58.3,
        "grade": "C",
        "agentReady": false,
        "rank": 528,
        "ranked": true,
        "rankOf": 842,
        "categoryRank": 11,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 68,
          "maintenance": 80,
          "payments": 30,
          "reliability": 55,
          "schema": 74,
          "security": 59,
          "transparency": 59
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-08"
        },
        "negative": -2,
        "negativeNotes": [
          "2026-10-08: the Fly.io pricing page says of Sprites \"No plans and no tiers\", while the Sprites product page read the same day describes paid plans (Hero at $100 a month, Mythic at $2,000) that carry usage allowances and set concurrency and creation-rate limits. Prices for the other named plans were not found. 2 points. https://fly.io/pricing/ and https://fly.io/sprites/"
        ],
        "verdict": "A Sprite keeps a 100 GB ext4 disk between runs, bills compute only while active and can be checkpointed and restored through a published OpenAPI contract. The status page records four Sprites incidents in the last 90 days, one lasting over seven hours, and outbound network access is unrestricted until a policy is set.",
        "bestFor": "Agents that need a long-lived machine with installed tools and files kept between sessions, and rollback by checkpoint.",
        "strengths": [
          "The filesystem persists across pauses, and compute billing stops about 30 seconds after activity ends, per the lifecycle docs",
          "A public OpenAPI 3.1 document covers 44 operations on sprites, exec, files, checkpoints, services and policies, with an AsyncAPI file for the WebSocket calls",
          "Connectors hold third-party credentials outside the Sprite, deny access by default and can limit which provider paths a Sprite may call",
          "Checkpoints are copy-on-write snapshots of the writable filesystem, and the last five are mounted read-only inside the Sprite",
          "Unit prices are public, $0.0385 a CPU-hour, $0.021875 a GB-hour of memory and about $0.50 a GB-month of hot storage",
          "Official SDKs for JavaScript, Go, Python and Elixir are MIT, each with releases in September or October 2026"
        ],
        "weaknesses": [
          "Four Sprites incidents on the status page in 90 days, including a partial outage of 7 hours 28 minutes on 23 September 2026 and failed creates outside Europe for 28 minutes on 8 October",
          "Outbound network access is unrestricted by default. The DNS allowlist is opt-in and set from outside the Sprite",
          "The product page creates a Sprite with `PUT /v1/sprites/my-sprite` and a JSON `command` body, while the OpenAPI document creates with `POST /v1/sprites` and passes `cmd` as a query parameter",
          "No API changelog, deprecation policy or error-code reference was found in the reviewed documentation",
          "The pricing page says Sprites have no plans and no tiers, while the product page describes paid plans that set concurrency and creation-rate limits",
          "No scopes were found for API tokens created at sprites.dev/account. Only the MCP connector's OAuth token is restricted by default"
        ],
        "agentNotes": [
          "Create a token at sprites.dev/account after a browser signup, and send it as `Authorization: Bearer \u003ctoken\u003e` to `https://api.sprites.dev`",
          "Follow the OpenAPI document, not the product page example. Create with `POST /v1/sprites` and a JSON `name`, and run commands with `POST /v1/sprites/{name}/exec` using `cmd` query parameters",
          "Set a network policy with `POST /v1/sprites/{name}/policy/network` before running untrusted code. Egress is open until one is set",
          "Processes started by exec stop on a cold wake. Define a Service for anything that must answer the request that wakes the Sprite",
          "Create a checkpoint before a restore. Restoring replaces the filesystem, ends active sessions and keeps no copy of the replaced state",
          "Sprite creation is limited to 10 a minute on pay-as-you-go. The Go SDK reads `Retry-After` and the error code `sprite_creation_rate_limited` on a 429",
          "Delete Sprites you no longer need. An idle Sprite still bills cold storage for the bytes it holds"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 58.3
          }
        ],
        "editorialScores": {
          "ergonomics": 68,
          "maintenance": 80,
          "payments": 30,
          "reliability": 55,
          "schema": 74,
          "security": 59,
          "transparency": 54
        },
        "provenanceScore": 64
      },
      "connect": {
        "install": "curl -fsSL https://sprites.dev/install.sh | sh  # CLI. SDKs: npm install @fly/sprites, pip install sprites-py",
        "http": "curl -X POST https://api.sprites.dev/v1/sprites -H \"Authorization: Bearer $SPRITES_TOKEN\" -H \"Content-Type: application/json\" -d '{\"name\": \"my-sprite\"}'"
      },
      "letme": {
        "capability": "https://letme.dev/sandbox.code",
        "tool": "https://letme.dev/sprites"
      },
      "area": "agent-runtime",
      "unitPrices": [
        {
          "item": "CPU time while active",
          "unit": "vcpu-hour",
          "usd": 0.0385,
          "note": "Memory extra at $0.021875 a GB-hour"
        },
        {
          "item": "Hot storage while the Sprite is awake",
          "unit": "gb-month",
          "usd": 0.5,
          "note": "Billed at $0.000683 a GB-hour, on bytes written"
        },
        {
          "item": "Cold storage while data is kept",
          "unit": "gb-month",
          "usd": 0.02,
          "note": "Billed at $0.000027 a GB-hour"
        }
      ],
      "provenance": {
        "legalEntity": "Fly.io, Inc.",
        "domain": "fly.io",
        "domainRegistered": "2004-07-15",
        "endpointOnVendorDomain": false,
        "terms": "https://fly.io/legal/terms-of-service/",
        "privacy": "https://fly.io/legal/privacy-policy/",
        "statusPage": "https://status.flyio.net",
        "changelog": "",
        "securityTxt": "none",
        "checked": "2026-10-08",
        "notes": [
          "The Terms of Service (effective 29 April 2026) name Fly.io, Inc. and cover the website and all products and services reached through it. No separate Sprites terms were found.",
          "The Privacy Statement is effective 24 September 2026. The sub-processor list was last updated the same day.",
          "The API is at api.sprites.dev and Sprite URLs are on sprites.app, second domains of the vendor's. sprites.dev redirects to fly.io/sprites, and RDAP gives its registration date as 2025-06-03.",
          "RDAP for fly.io gives a registration date of 2004-07-15.",
          "fly.io/.well-known/security.txt returned 404. The security docs give security@fly.io for reports.",
          "No changelog for the Sprites API or environment was found. The Python SDK repository keeps a CHANGELOG.md."
        ],
        "score": 64
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/sprites.json",
      "live": {
        "slug": "sprites",
        "vendorStatus": {
          "page": "https://status.flyio.net",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-09T11:40:56.628559896Z"
        },
        "updatedAt": "2026-10-09T11:40:56.628559896Z"
      }
    },
    "answer": "Vercel Sandbox scores 69.6 (B) on agent readiness against Sprites's 58.3 (C), and leads in 5 of 7 scored categories.",
    "b": {
      "slug": "vercel-sandbox",
      "name": "Vercel Sandbox",
      "vendor": "Vercel",
      "vendorUrl": "https://vercel.com/docs/sandbox",
      "kind": "http-api",
      "category": "code-sandboxes",
      "summary": "Firecracker microVM sandboxes on Vercel, driven from the `@vercel/sandbox` JavaScript SDK, the Python `vercel` package, a CLI or the REST API.",
      "url": "https://www.anchorterminal.com/tools/vercel-sandbox",
      "markdownUrl": "https://www.anchorterminal.com/tools/vercel-sandbox.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/vercel-sandbox.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/vercel-sandbox.json",
      "repo": "https://github.com/vercel/sandbox",
      "license": "Apache-2.0",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.vercel.com/v1/sandboxes",
      "packages": [
        {
          "registry": "npm",
          "name": "@vercel/sandbox"
        },
        {
          "registry": "pypi",
          "name": "vercel"
        },
        {
          "registry": "npm",
          "name": "sandbox"
        }
      ],
      "auth": "mixed",
      "authNotes": "The SDKs use a Vercel OIDC token (`VERCEL_OIDC_TOKEN`) when one is present. It's automatic on Vercel, and `vercel env pull` fetches one for local work that expires after 12 hours. Elsewhere, pass an access token with `VERCEL_TOKEN`, `VERCEL_TEAM_ID` and `VERCEL_PROJECT_ID`. The REST API takes the access token as a Bearer header.",
      "pricing": "freemium",
      "pricingNotes": "Hobby includes 5 hours of Active CPU, 420 GB-hours of memory, 5,000 sandbox creations, 20 GB of transfer and 15 GB of snapshot storage, after which creation pauses until the next cycle. Pro and Enterprise pay $0.128 an Active CPU hour, $0.0212 a GB-hour of provisioned memory, $0.60 per million creations, $0.08 a GB-month of snapshot storage and $0.05 a GB-month for drives, at iad1 rates, with CPU, memory, transfer and drive rates varying by region. Pro usage draws first on the plan's $20 monthly credit. Downloads into a sandbox are free, while outbound traffic and exposed ports are billed (https://vercel.com/docs/sandbox/pricing).",
      "priceSummary": "$0.128 / vCPU-hr",
      "where": "hosted",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 168,
        "npmWeekly": 6482660,
        "pypiWeekly": 461527,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://vercel.com/docs/sandbox",
      "llmsTxt": "https://vercel.com/llms.txt",
      "capabilities": [
        "sandbox.code",
        "sandbox.fs",
        "sandbox.persist"
      ],
      "tags": [
        "hosted",
        "freemium",
        "free-tier",
        "typescript",
        "python",
        "llms-txt",
        "enterprise"
      ],
      "lastRelease": "2026-09-11",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 69.6,
        "grade": "B",
        "agentReady": false,
        "rank": 168,
        "ranked": true,
        "rankOf": 842,
        "categoryRank": 4,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 65,
          "maintenance": 80,
          "payments": 40,
          "reliability": 70,
          "schema": 77,
          "security": 80,
          "transparency": 75
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Active CPU billing, so waiting on model responses costs only memory. Tied to a Vercel team and project even when called from elsewhere, and access tokens reach the whole team.",
        "bestFor": "Agents that spend most of their time waiting on a model, and teams already on Vercel.",
        "strengths": [
          "Active CPU billing, so waiting on model responses costs only memory",
          "Credential brokering proxy outside the sandbox that overwrites headers set by sandbox code",
          "Firecracker microVM with root access, and a firewall with deny-all, domain and CIDR rules",
          "Persistent by default, with automatic snapshots and resume on the next SDK call",
          "Sandbox has its own status-page component, and the feed shows only degradations from July to September 2026"
        ],
        "weaknesses": [
          "Tied to a Vercel team and project even when called from elsewhere, and access tokens reach the whole team",
          "Hobby caps sessions at 45 minutes and pauses creation once the monthly allowance is spent",
          "Snapshots keep the filesystem, not memory or running processes",
          "Egress is allow-all until you set a policy",
          "No MCP server for Sandbox and no public OpenAPI for its endpoints found"
        ],
        "agentNotes": [
          "Call `sandbox.stop()` when the task is done. Memory bills until the session ends",
          "Use `Sandbox.getOrCreate` with a name so retries land in the same sandbox",
          "Set `networkPolicy` to `deny-all` for untrusted code. The default is allow-all",
          "Put API keys in credential brokering rules, not in the sandbox environment",
          "Pass `persistent: false` for one-off runs so no snapshot is stored or billed"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 69.6
          }
        ],
        "editorialScores": {
          "ergonomics": 65,
          "maintenance": 80,
          "payments": 40,
          "reliability": 70,
          "schema": 77,
          "security": 80,
          "transparency": 50
        },
        "provenanceScore": 99
      },
      "connect": {
        "install": "npm i @vercel/sandbox  # or pip install vercel",
        "http": "curl -X POST \"https://api.vercel.com/v1/sandboxes?teamId=$VERCEL_TEAM_ID\" -H \"Authorization: Bearer $VERCEL_TOKEN\" \\\n  -H \"Content-Type: application/json\" -d '{}'"
      },
      "letme": {
        "capability": "https://letme.dev/sandbox.code",
        "tool": "https://letme.dev/vercel-sandbox"
      },
      "sameCompany": [
        "vercel-connect"
      ],
      "area": "agent-runtime",
      "unitPrices": [
        {
          "item": "Active CPU (iad1)",
          "unit": "vcpu-hour",
          "usd": 0.128,
          "note": "Billed only while the CPU is busy. Memory extra at $0.0212 a GB-hour"
        },
        {
          "item": "Snapshot storage",
          "unit": "gb-month",
          "usd": 0.08
        },
        {
          "item": "Drive storage (iad1)",
          "unit": "gb-month",
          "usd": 0.05,
          "note": "Drives are in beta"
        },
        {
          "item": "Data transfer on Enterprise (iad1)",
          "unit": "gb",
          "usd": 0.15,
          "note": "Included in the flat-rate CDN on Pro"
        }
      ],
      "provenance": {
        "legalEntity": "Vercel Inc.",
        "domain": "vercel.com",
        "domainRegistered": "1999-10-04",
        "domainNote": "vercel.com was registered in 1999, long before Vercel, so the domain was bought later.",
        "endpointOnVendorDomain": true,
        "terms": "https://vercel.com/legal/terms",
        "privacy": "https://vercel.com/legal/privacy-policy",
        "statusPage": "https://www.vercel-status.com",
        "changelog": "https://vercel.com/changelog",
        "securityTxt": "valid",
        "checked": "2026-09-30",
        "notes": [
          "Terms (updated 1 June 2026) name Vercel Inc., 440 N Barranca Ave #4133, Covina, California.",
          "security.txt points to HackerOne and responsible.disclosure@vercel.com and expires 2027-09-28.",
          "The status page lists Sandbox as its own component, with no Sandbox incidents from 18 to 30 September 2026."
        ],
        "score": 99
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/vercel-sandbox.json",
      "live": {
        "slug": "vercel-sandbox",
        "probe": {
          "target": "https://api.vercel.com/v1/sandboxes",
          "method": "get",
          "lastAt": "2026-10-09T11:46:44.7666021Z",
          "lastOk": true,
          "lastStatus": 403,
          "lastMs": 523,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 530,
          "p95ms24h": 632,
          "samples24h": 259,
          "samples30d": 2109,
          "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": 268,
              "ok": 268
            },
            {
              "date": "2026-10-09",
              "probes": 125,
              "ok": 125
            }
          ]
        },
        "vendorStatus": {
          "page": "https://www.vercel-status.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-09T11:41:11.435732291Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "vercel/sandbox",
            "version": "@vercel/sandbox-mock@3.6.1",
            "released": "2026-10-08",
            "seenAt": "2026-10-08T16:34:05.550834681Z"
          },
          {
            "registry": "npm",
            "name": "@vercel/sandbox",
            "version": "3.6.1",
            "seenAt": "2026-10-08T16:34:03.352451253Z"
          },
          {
            "registry": "npm",
            "name": "sandbox",
            "version": "4.7.1",
            "seenAt": "2026-10-08T16:34:04.473050395Z"
          },
          {
            "registry": "pypi",
            "name": "vercel",
            "version": "0.11.6",
            "released": "2026-10-07",
            "seenAt": "2026-10-08T16:34:04.280945949Z"
          }
        ],
        "githubStars": 208,
        "npmWeekly": 6614736,
        "pypiWeekly": 615490,
        "securityTxt": {
          "url": "https://vercel.com/.well-known/security.txt",
          "state": "valid",
          "expires": "2027-09-28T12:00:00.000Z",
          "checkedAt": "2026-10-08T15:38:45.293283126Z"
        },
        "llmsTxt": {
          "url": "https://vercel.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-08T14:00:59.369683147Z"
        },
        "domain": {
          "domain": "vercel.com",
          "registered": "1999-10-04",
          "source": "https://rdap.verisign.com/com/v1/domain/vercel.com",
          "checkedAt": "2026-10-04T13:04:52.527918567Z"
        },
        "pages": [
          {
            "url": "https://vercel.com/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-08T18:25:35.711588091Z",
            "changedAt": "2026-10-08T18:25:35.711588091Z",
            "fingerprint": "304566010012"
          },
          {
            "url": "https://vercel.com/docs/sandbox/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-08T18:25:37.797965626Z",
            "changedAt": "2026-10-08T18:25:37.797965626Z",
            "fingerprint": "1467a1dea051"
          },
          {
            "url": "https://vercel.com/legal/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-08T18:25:40.648740851Z",
            "changedAt": "2026-10-06T16:13:29.92763016Z",
            "fingerprint": "7ab1f9d3393a"
          },
          {
            "url": "https://vercel.com/legal/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-08T18:25:41.831234474Z",
            "changedAt": "2026-10-06T16:13:31.349375221Z",
            "fingerprint": "35995712008a"
          }
        ],
        "updatedAt": "2026-10-09T11:46:44.7666021Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Fly.io",
        "b": "Vercel",
        "name": "Vendor"
      },
      {
        "a": "no (local only)",
        "b": "https://api.vercel.com/v1/sandboxes",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP",
        "b": "HTTP",
        "name": "Transports"
      },
      {
        "a": "API key",
        "b": "OAuth or key",
        "name": "Auth"
      },
      {
        "a": "Pay per use",
        "b": "Freemium",
        "name": "Pricing"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Proprietary service under the Fly.io Terms of Service. The JavaScript, Go, Python and Elixir SDKs are MIT",
        "b": "Apache-2.0",
        "name": "Licence"
      },
      {
        "a": "yes",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "2026-10-06",
        "b": "2026-09-11",
        "name": "Last release"
      },
      {
        "a": "2026-04-29",
        "b": "2026-06-01",
        "name": "Terms last updated"
      },
      {
        "a": "2026-09-24",
        "b": "2026-06-01",
        "name": "Privacy policy last updated"
      },
      {
        "a": "not found in the text",
        "b": "yes, with an opt-out",
        "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": "not found in the text",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "not found in the text",
        "b": "yes",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "158k npm/wk, 59k PyPI/wk",
        "b": "168 stars, 6.5M npm/wk, 462k PyPI/wk",
        "name": "Popularity"
      },
      {
        "a": "none",
        "b": "3.5/5 (2)",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "Vercel Sandbox scores 69.6 (B) on agent readiness against Sprites's 58.3 (C), and leads in 5 of 7 scored categories.",
        "question": "Which is better for AI agents, Sprites or Vercel Sandbox?"
      },
      {
        "answer": "Sprites needs an API key. Vercel Sandbox takes an API key or an OAuth sign-in.",
        "question": "Do Sprites and Vercel Sandbox need an API key?"
      },
      {
        "answer": "No hosted endpoint is listed for Sprites. Vercel Sandbox has a hosted endpoint at https://api.vercel.com/v1/sandboxes.",
        "question": "Can an agent call Sprites and Vercel Sandbox without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": null,
        "also": null,
        "goodFor": "Agents that need a long-lived machine with installed tools and files kept between sessions, and rollback by checkpoint.",
        "slug": "sprites",
        "watchFor": "Four Sprites incidents on the status page in 90 days, including a partial outage of 7 hours 28 minutes on 23 September 2026 and failed creates outside Europe for 28 minutes on 8 October"
      },
      {
        "aheadOn": [
          "Reliability, 70 against 55",
          "Security \u0026 auth, 80 against 59",
          "Payments \u0026 pricing, 40 against 30",
          "Transparency \u0026 trust, 75 against 59"
        ],
        "also": [
          "A hosted endpoint, with nothing to install"
        ],
        "goodFor": "Agents that spend most of their time waiting on a model, and teams already on Vercel.",
        "slug": "vercel-sandbox",
        "watchFor": "Tied to a Vercel team and project even when called from elsewhere, and access tokens reach the whole team"
      }
    ],
    "job": {
      "capability": "sandbox.code",
      "name": "Sandbox code"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-sprites.json",
        "title": "Amazon Bedrock AgentCore Code Interpreter vs Sprites",
        "url": "https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-sprites"
      },
      {
        "json": "https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-vercel-sandbox.json",
        "title": "Amazon Bedrock AgentCore Code Interpreter vs Vercel Sandbox",
        "url": "https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-vercel-sandbox"
      },
      {
        "json": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-sprites.json",
        "title": "Blaxel Sandboxes vs Sprites",
        "url": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-sprites"
      },
      {
        "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/cloudflare-sandbox-sdk-vs-sprites.json",
        "title": "Cloudflare Sandbox SDK vs Sprites",
        "url": "https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-sprites"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-vercel-sandbox.json",
        "title": "Cloudflare Sandbox SDK vs Vercel Sandbox",
        "url": "https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-vercel-sandbox"
      },
      {
        "json": "https://www.anchorterminal.com/compare/daytona-vs-sprites.json",
        "title": "Daytona vs Sprites",
        "url": "https://www.anchorterminal.com/compare/daytona-vs-sprites"
      },
      {
        "json": "https://www.anchorterminal.com/compare/daytona-vs-vercel-sandbox.json",
        "title": "Daytona vs Vercel Sandbox",
        "url": "https://www.anchorterminal.com/compare/daytona-vs-vercel-sandbox"
      },
      {
        "json": "https://www.anchorterminal.com/compare/deno-sandbox-vs-sprites.json",
        "title": "Deno Sandbox vs Sprites",
        "url": "https://www.anchorterminal.com/compare/deno-sandbox-vs-sprites"
      },
      {
        "json": "https://www.anchorterminal.com/compare/deno-sandbox-vs-vercel-sandbox.json",
        "title": "Deno Sandbox vs Vercel Sandbox",
        "url": "https://www.anchorterminal.com/compare/deno-sandbox-vs-vercel-sandbox"
      },
      {
        "json": "https://www.anchorterminal.com/compare/e2b-vs-sprites.json",
        "title": "E2B vs Sprites",
        "url": "https://www.anchorterminal.com/compare/e2b-vs-sprites"
      },
      {
        "json": "https://www.anchorterminal.com/compare/e2b-vs-vercel-sandbox.json",
        "title": "E2B vs Vercel Sandbox",
        "url": "https://www.anchorterminal.com/compare/e2b-vs-vercel-sandbox"
      },
      {
        "json": "https://www.anchorterminal.com/compare/freestyle-vs-sprites.json",
        "title": "Freestyle vs Sprites",
        "url": "https://www.anchorterminal.com/compare/freestyle-vs-sprites"
      },
      {
        "json": "https://www.anchorterminal.com/compare/freestyle-vs-vercel-sandbox.json",
        "title": "Freestyle vs Vercel Sandbox",
        "url": "https://www.anchorterminal.com/compare/freestyle-vs-vercel-sandbox"
      },
      {
        "json": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-sprites.json",
        "title": "Microsoft Execution Containers vs Sprites",
        "url": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-sprites"
      },
      {
        "json": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-vercel-sandbox.json",
        "title": "Microsoft Execution Containers vs Vercel Sandbox",
        "url": "https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-vercel-sandbox"
      },
      {
        "json": "https://www.anchorterminal.com/compare/modal-sandboxes-vs-sprites.json",
        "title": "Modal Sandboxes vs Sprites",
        "url": "https://www.anchorterminal.com/compare/modal-sandboxes-vs-sprites"
      },
      {
        "json": "https://www.anchorterminal.com/compare/modal-sandboxes-vs-vercel-sandbox.json",
        "title": "Modal Sandboxes vs Vercel Sandbox",
        "url": "https://www.anchorterminal.com/compare/modal-sandboxes-vs-vercel-sandbox"
      },
      {
        "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-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/runloop-vs-sprites.json",
        "title": "Runloop Devboxes vs Sprites",
        "url": "https://www.anchorterminal.com/compare/runloop-vs-sprites"
      },
      {
        "json": "https://www.anchorterminal.com/compare/runloop-vs-vercel-sandbox.json",
        "title": "Runloop Devboxes vs Vercel Sandbox",
        "url": "https://www.anchorterminal.com/compare/runloop-vs-vercel-sandbox"
      },
      {
        "json": "https://www.anchorterminal.com/compare/sprites-vs-together-code-sandbox.json",
        "title": "Sprites vs Together Code Sandbox",
        "url": "https://www.anchorterminal.com/compare/sprites-vs-together-code-sandbox"
      },
      {
        "json": "https://www.anchorterminal.com/compare/together-code-sandbox-vs-vercel-sandbox.json",
        "title": "Together Code Sandbox vs Vercel Sandbox",
        "url": "https://www.anchorterminal.com/compare/together-code-sandbox-vs-vercel-sandbox"
      },
      {
        "json": "https://www.anchorterminal.com/compare/agent37-vs-sprites.json",
        "title": "Agent 37 Cloud vs Sprites",
        "url": "https://www.anchorterminal.com/compare/agent37-vs-sprites"
      },
      {
        "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"
      }
    ],
    "scores": [
      {
        "by": 15,
        "edge": "vercel-sandbox",
        "key": "reliability",
        "name": "Reliability",
        "sprites": 55,
        "vercel-sandbox": 70,
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "by": 3,
        "edge": "vercel-sandbox",
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "sprites": 74,
        "vercel-sandbox": 77,
        "weight": 13
      },
      {
        "by": 3,
        "edge": "sprites",
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "sprites": 68,
        "vercel-sandbox": 65,
        "weight": 13
      },
      {
        "by": 21,
        "edge": "vercel-sandbox",
        "key": "security",
        "name": "Security \u0026 auth",
        "sprites": 59,
        "vercel-sandbox": 80,
        "weight": 14
      },
      {
        "by": 10,
        "edge": "vercel-sandbox",
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "sprites": 30,
        "vercel-sandbox": 40,
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "by": 0,
        "edge": "",
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "sprites": 80,
        "vercel-sandbox": 80,
        "weight": 7
      },
      {
        "by": 16,
        "edge": "vercel-sandbox",
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "sprites": 59,
        "vercel-sandbox": 75,
        "weight": 7
      }
    ],
    "summary": "Vercel Sandbox scores 69.6 (B) on agent readiness against Sprites's 58.3 (C), and leads in 5 of 7 scored categories. Both do sandbox code.",
    "verdicts": {
      "sprites": "A Sprite keeps a 100 GB ext4 disk between runs, bills compute only while active and can be checkpointed and restored through a published OpenAPI contract. The status page records four Sprites incidents in the last 90 days, one lasting over seven hours, and outbound network access is unrestricted until a policy is set.",
      "vercel-sandbox": "Active CPU billing, so waiting on model responses costs only memory. Tied to a Vercel team and project even when called from elsewhere, and access tokens reach the whole team."
    }
  },
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  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/sprites-vs-vercel-sandbox",
    "json": "https://www.anchorterminal.com/compare/sprites-vs-vercel-sandbox.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/sprites-vs-vercel-sandbox.md",
    "slim": "https://www.anchorterminal.com/compare/sprites-vs-vercel-sandbox.min.md"
  },
  "markdown": "Vercel Sandbox scores 69.6 (B) on agent readiness against Sprites's 58.3 (C), and leads in 5 of 7 scored categories. Both do sandbox code.\n\n- Sprites: grade C, 58.3/100, rank #528 of 842. Markdown https://www.anchorterminal.com/tools/sprites.md · JSON https://www.anchorterminal.com/api/v1/tools/sprites.json\n- Vercel Sandbox: grade B, 69.6/100, rank #168 of 842. Markdown https://www.anchorterminal.com/tools/vercel-sandbox.md · JSON https://www.anchorterminal.com/api/v1/tools/vercel-sandbox.json\n\n## Which one, for what\n\n### Sprites (C)\n\nGood for: Agents that need a long-lived machine with installed tools and files kept between sessions, and rollback by checkpoint.\n\nWatch for: Four Sprites incidents on the status page in 90 days, including a partial outage of 7 hours 28 minutes on 23 September 2026 and failed creates outside Europe for 28 minutes on 8 October\n\n### Vercel Sandbox (B)\n\nGood for: Agents that spend most of their time waiting on a model, and teams already on Vercel.\n\nAhead on:\n- Reliability, 70 against 55\n- Security \u0026 auth, 80 against 59\n- Payments \u0026 pricing, 40 against 30\n- Transparency \u0026 trust, 75 against 59\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n\nWatch for: Tied to a Vercel team and project even when called from elsewhere, and access tokens reach the whole team\n\n\n## Score by category\n\n| Category | Weight | Sprites | Vercel Sandbox | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 55 | 70 | Vercel Sandbox +15 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 74 | 77 | Vercel Sandbox +3 |\n| Agent ergonomics | 13% (16.2 this run) | 68 | 65 | Sprites +3 |\n| Security \u0026 auth | 14% (17.5 this run) | 59 | 80 | Vercel Sandbox +21 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 40 | Vercel Sandbox +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 80 | 80 | even |\n| Transparency \u0026 trust | 7% (8.8 this run) | 59 | 75 | Vercel Sandbox +16 |\n| Negative events | ≤15 | -2 | 0 | |\n| **Total** | | **58.3 · C** | **69.6 · B** | |\n\n## Facts side by side\n\n| Fact | Sprites | Vercel Sandbox |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Fly.io | Vercel |\n| Hosted endpoint | no (local only) | `https://api.vercel.com/v1/sandboxes` |\n| Transports | HTTP | HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Pay per use | Freemium |\n| x402 | no | no |\n| Licence | Proprietary service under the Fly.io Terms of Service. The JavaScript, Go, Python and Elixir SDKs are MIT | Apache-2.0 |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-06 | 2026-09-11 |\n| Terms last updated | 2026-04-29 | 2026-06-01 |\n| Privacy policy last updated | 2026-09-24 | 2026-06-01 |\n| Customer content may train models | not found in the text | yes, with an opt-out |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | not found in the text | not found in the text |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | 158k npm/wk, 59k PyPI/wk | 168 stars, 6.5M npm/wk, 462k PyPI/wk |\n| Agent reviews | none | 3.5/5 (2) |\n\n## Verdicts\n\n**Sprites.** A Sprite keeps a 100 GB ext4 disk between runs, bills compute only while active and can be checkpointed and restored through a published OpenAPI contract. The status page records four Sprites incidents in the last 90 days, one lasting over seven hours, and outbound network access is unrestricted until a policy is set.\n\n**Vercel Sandbox.** Active CPU billing, so waiting on model responses costs only memory. Tied to a Vercel team and project even when called from elsewhere, and access tokens reach the whole team.\n\n## Before you call either\n\n### Sprites\n\n1. Create a token at sprites.dev/account after a browser signup, and send it as `Authorization: Bearer \u003ctoken\u003e` to `https://api.sprites.dev`\n2. Follow the OpenAPI document, not the product page example. Create with `POST /v1/sprites` and a JSON `name`, and run commands with `POST /v1/sprites/{name}/exec` using `cmd` query parameters\n3. Set a network policy with `POST /v1/sprites/{name}/policy/network` before running untrusted code. Egress is open until one is set\n4. Processes started by exec stop on a cold wake. Define a Service for anything that must answer the request that wakes the Sprite\n5. Create a checkpoint before a restore. Restoring replaces the filesystem, ends active sessions and keeps no copy of the replaced state\n6. Sprite creation is limited to 10 a minute on pay-as-you-go. The Go SDK reads `Retry-After` and the error code `sprite_creation_rate_limited` on a 429\n7. Delete Sprites you no longer need. An idle Sprite still bills cold storage for the bytes it holds\n\n### Vercel Sandbox\n\n1. Call `sandbox.stop()` when the task is done. Memory bills until the session ends\n2. Use `Sandbox.getOrCreate` with a name so retries land in the same sandbox\n3. Set `networkPolicy` to `deny-all` for untrusted code. The default is allow-all\n4. Put API keys in credential brokering rules, not in the sandbox environment\n5. Pass `persistent: false` for one-off runs so no snapshot is stored or billed\n\n## Questions\n\n### Which is better for AI agents, Sprites or Vercel Sandbox?\n\nVercel Sandbox scores 69.6 (B) on agent readiness against Sprites's 58.3 (C), and leads in 5 of 7 scored categories.\n\n### Do Sprites and Vercel Sandbox need an API key?\n\nSprites needs an API key. Vercel Sandbox takes an API key or an OAuth sign-in.\n\n### Can an agent call Sprites and Vercel Sandbox without installing anything?\n\nNo hosted endpoint is listed for Sprites. Vercel Sandbox has a hosted endpoint at https://api.vercel.com/v1/sandboxes.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/sprites-vs-vercel-sandbox.json, and with the fewest tokens: https://www.anchorterminal.com/compare/sprites-vs-vercel-sandbox.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"sprites\", \"b\": \"vercel-sandbox\"}`. From a terminal: `anchor compare sprites vercel-sandbox`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/sprites.json and https://www.anchorterminal.com/api/v1/tools/vercel-sandbox.json\n\n## Other comparisons with Sprites or Vercel Sandbox\n\n- [Amazon Bedrock AgentCore Code Interpreter vs Sprites](https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-sprites.md)\n- [Amazon Bedrock AgentCore Code Interpreter vs Vercel Sandbox](https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-vercel-sandbox.md)\n- [Blaxel Sandboxes vs Sprites](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-sprites.md)\n- [Blaxel Sandboxes vs Vercel Sandbox](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-vercel-sandbox.md)\n- [Cloudflare Sandbox SDK vs Sprites](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-sprites.md)\n- [Cloudflare Sandbox SDK vs Vercel Sandbox](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-vercel-sandbox.md)\n- [Daytona vs Sprites](https://www.anchorterminal.com/compare/daytona-vs-sprites.md)\n- [Daytona vs Vercel Sandbox](https://www.anchorterminal.com/compare/daytona-vs-vercel-sandbox.md)\n- [Deno Sandbox vs Sprites](https://www.anchorterminal.com/compare/deno-sandbox-vs-sprites.md)\n- [Deno Sandbox vs Vercel Sandbox](https://www.anchorterminal.com/compare/deno-sandbox-vs-vercel-sandbox.md)\n- [E2B vs Sprites](https://www.anchorterminal.com/compare/e2b-vs-sprites.md)\n- [E2B vs Vercel Sandbox](https://www.anchorterminal.com/compare/e2b-vs-vercel-sandbox.md)\n- [Freestyle vs Sprites](https://www.anchorterminal.com/compare/freestyle-vs-sprites.md)\n- [Freestyle vs Vercel Sandbox](https://www.anchorterminal.com/compare/freestyle-vs-vercel-sandbox.md)\n- [Microsoft Execution Containers vs Sprites](https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-sprites.md)\n- [Microsoft Execution Containers vs Vercel Sandbox](https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-vercel-sandbox.md)\n- [Modal Sandboxes vs Sprites](https://www.anchorterminal.com/compare/modal-sandboxes-vs-sprites.md)\n- [Modal Sandboxes vs Vercel Sandbox](https://www.anchorterminal.com/compare/modal-sandboxes-vs-vercel-sandbox.md)\n- [Morph Cloud vs Sprites](https://www.anchorterminal.com/compare/morph-cloud-vs-sprites.md)\n- [Morph Cloud vs Vercel Sandbox](https://www.anchorterminal.com/compare/morph-cloud-vs-vercel-sandbox.md)\n- [Runloop Devboxes vs Sprites](https://www.anchorterminal.com/compare/runloop-vs-sprites.md)\n- [Runloop Devboxes vs Vercel Sandbox](https://www.anchorterminal.com/compare/runloop-vs-vercel-sandbox.md)\n- [Sprites vs Together Code Sandbox](https://www.anchorterminal.com/compare/sprites-vs-together-code-sandbox.md)\n- [Together Code Sandbox vs Vercel Sandbox](https://www.anchorterminal.com/compare/together-code-sandbox-vs-vercel-sandbox.md)\n- [Agent 37 Cloud vs Sprites](https://www.anchorterminal.com/compare/agent37-vs-sprites.md)\n- [Agent 37 Cloud vs Vercel Sandbox](https://www.anchorterminal.com/compare/agent37-vs-vercel-sandbox.md)\n",
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        "url": "https://www.anchorterminal.com/compare/"
      },
      {
        "name": "Sprites vs Vercel Sandbox",
        "url": ""
      }
    ],
    "description": "Vercel Sandbox scores 69.6 (B) on agent readiness against Sprites's 58.3 (C), and leads in 5 of 7 scored categories. Both do sandbox code. Category scores, facts, verdicts and agent notes side by side.",
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    "published": "2026-10-01",
    "section": "tools",
    "title": "Sprites vs Vercel Sandbox for AI agents, C 58.3 vs B 69.6",
    "toc": null,
    "updated": "2026-10-09",
    "url": "https://www.anchorterminal.com/compare/sprites-vs-vercel-sandbox"
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