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Rank #6 of 8 in Agent Sandboxes & Code Execution

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Blaxel

YC X25

Blaxel · commercial

blaxel.ai ↗Try it →
PA Score21/100AGENT-READY39/100BUILT-IN AI33/100API10/100
MCP✓CLI✓API~
npm 115.1k/wkpypi 30.3k/wk
ArenasAgent Sandboxes & Code Execution#6/8

Access

Open app ↗API docs ↗CLI docs ↗MCP docs ↗

Install

brewbrew install blaxel-ai/blaxel/blaxel
pippip install blaxel
npmnpm install @blaxel/core

Compare head-to-head

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Alternatives to Blaxel →

Try itExperimental

See what an agent can do with Blaxel before you ever sign up. Pick a story: recorded sessions replay real probe-harness transcripts; commands tagged live-capable can re-run against the real endpoint from our edge, right now (▶ run live — the exact same request, live and recorded lines always labeled); sandboxed self-drive sessions are designed and gated (docs/TRY-IT.md).

$curl -s https://docs.blaxel.ai/Get-started.md | head -6recorded session — replayed, not live
recorded 2026-09-10 · exit 0 · captured verbatim by our probe harness, secrets redacted · pure-HTTP probe — ▶ run live re-runs it from our edge

Verified integrations

No integration evidence found in our corpus for this product yet — that means none was found, never that it doesn’t integrate.

By theme — the product's score on each story themeBy theme

Agenticness — how well agents can access and operate the productAgenticnessevidence →

How well agents can access and operate the product

31.9/100

Automation depth — how much of the product can run unattendedAutomation depthevidence →

How much of the product can run unattended

9.0/100

Capabilities hardware — stories about capabilities hardware in this arenaCapabilities hardwareevidence →

Stories about capabilities hardware in this arena

0.0/100

Code execution — stories about code execution in this arenaCode executionevidence →

Stories about code execution in this arena

34.4/100

Dev experience — day-to-day developer experience — setup friction, docs, debugging, iteration speedDev experienceevidence →

Day-to-day developer experience — setup friction, docs, debugging, iteration speed

80.0/100

Isolation security — stories about isolation security in this arenaIsolation securityevidence →

Stories about isolation security in this arena

7.5/100

Openness — open source, data portability, and self-hosting storiesOpennessevidence →

Open source, data portability, and self-hosting stories

6.0/100

Performance scale — stories about performance scale in this arenaPerformance scaleevidence →

Stories about performance scale in this arena

27.7/100

Pricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limitsevidence →

Free-tier ceilings, usage caps, and rate limits before you have to pay

13.5/100

Privacy posture — data-handling and privacy storiesPrivacy postureevidence →

Data-handling and privacy stories

8.0/100

Provisioning lifecycle — creating, updating, and tearing down resources across their lifecycleProvisioning lifecycleevidence →

Creating, updating, and tearing down resources across their lifecycle

48.6/100

Snapshot persistence — stories about snapshot persistence in this arenaSnapshot persistenceevidence →

Stories about snapshot persistence in this arena

12.0/100

Story verdicts — every judged story with its evidenceStory verdicts

?

Sorted by importance (agentic first) (high → low) · 51/51 stories · click a row’s chevron for the rationale and evidence

Connect an agent via an official MCP server G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness3full7/10T

Drive the product through a documented public API G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness3partial5/10T

Plug MCP servers into this product so it can use their tools G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness3partial5/10T

Delegate tasks to a built-in AI assistant inside the product G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness3n/auntestednone yet

Point an agent at llms.txt or agent-oriented docs G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2full9/10T

Use an official CLI G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2full7/10T

Operate the product with natural-language commands G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness2partial6/10T

Run the product headlessly / in CI for automation G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2partial6/10T

Set up automations that run autonomously in the background G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness2partial5/10C

Build against official SDKs G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2partial3/10C

Download a machine-readable API spec (OpenAPI or equivalent) G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Explore an interactive API reference with runnable examples G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Issue scoped/least-privilege API credentials for an agent G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Rely on versioned APIs with a documented deprecation policy G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Get AI-generated insights and suggestions from my data inside the product G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness2n/auntestednone yet

Subscribe to events via webhooks G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2noneuntestednone yet

Test against a sandbox environment without touching production data G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness1full7/10C

My agent can provision its own sandbox, execute code, read the results, and tear it down — end to end without a human C

Agent lifecycle

ai-native userDev experience — day-to-day developer experience — setup friction, docs, debugging, iteration speedDev experience3full8/10C

Execute untrusted, AI-generated code without risking my own infrastructure C

Untrusted code

developerCode execution — stories about code execution in this arenaCode execution3full7/10C

Spin up an isolated sandbox with one API/SDK call and get a live environment in seconds C

Lifecycle

developerProvisioning lifecycle — creating, updating, and tearing down resources across their lifecycleProvisioning lifecycle3partial6/10T

Start sandboxes with documented sub-second-to-few-second cold starts C

Latency

developerPerformance scale — stories about performance scale in this arenaPerformance scale3partial6/10C

Pay per second only for the compute a sandbox actually uses G

Pricing

platform-engineerPricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limits3partial3/10C

Run large concurrent fleets of sandboxes with documented concurrency limits C

Scale

platform-engineerPerformance scale — stories about performance scale in this arenaPerformance scale3partial3/10C

Rely on a documented hard isolation boundary (microVM or equivalent) between sandboxes and my systems C

Isolation

platform-engineerIsolation security — stories about isolation security in this arenaIsolation security3none0/10

Self-host the core product G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness3none0/10

Snapshot a sandbox and later restore or fork new sandboxes from that snapshot C

Snapshots

developerSnapshot persistence — stories about snapshot persistence in this arenaSnapshot persistence3none0/10

Define rules that trigger actions automatically on events G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth3noneuntestednone yet

Export all of my data in open formats and leave G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness3noneuntestednone yet

Prevent my data from being used to train AI models G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture3noneuntestednone yet

Restrict or allow the sandbox's network egress with explicit policy C

Network policy

platform-engineerIsolation security — stories about isolation security in this arenaIsolation security3noneuntestednone yet

Expose a port from the sandbox on a public preview URL to reach services running inside C

Preview access

developerProvisioning lifecycle — creating, updating, and tearing down resources across their lifecycleProvisioning lifecycle2full8/10C

Choose where my data is stored (region/residency) G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture2partial6/10C

Define custom sandbox templates or bring my own container image C

Runtimes

developerCode execution — stories about code execution in this arenaCode execution2partial6/10C

Perform bulk operations across many items at once G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth2partial6/10C

Set timeouts so sandboxes shut down automatically and stop billing when idle or done G

Lifecycle

developerProvisioning lifecycle — creating, updating, and tearing down resources across their lifecycleProvisioning lifecycle2partial6/10C

Do everything through the API that I can do in the UI G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness2partial5/10T

Give an agent a sandbox where host secrets and credentials are unreachable by the code it runs C

Isolation

ai-native userIsolation security — stories about isolation security in this arenaIsolation security2partial5/10C

Keep a sandbox session running for hours or days for long agent tasks C

Scale

developerPerformance scale — stories about performance scale in this arenaPerformance scale2partial5/10C

Pause a running sandbox and resume it later with filesystem and memory state intact C

Snapshots

developerSnapshot persistence — stories about snapshot persistence in this arenaSnapshot persistence2partial5/10C

Run arbitrary shell commands and install packages inside the sandbox C

Untrusted code

developerCode execution — stories about code execution in this arenaCode execution2partial5/10C

Execute code in multiple language runtimes (Python, JavaScript, and more) and get rich results back C

Runtimes

developerCode execution — stories about code execution in this arenaCode execution2partial3/10C

Read the product's source under an open license G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness2none0/10

Read, write, upload, and download files in the sandbox filesystem via the SDK C

Files

developerCode execution — stories about code execution in this arenaCode execution2none0/10

Run coding agents like Claude Code or Codex inside the sandbox following the vendor's own recipe C

Agent workloads

ai-native userCapabilities hardware — stories about capabilities hardware in this arenaCapabilities hardware2none0/10

Schedule recurring jobs or workflows G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth2none0/10

Attach GPUs to sandboxed workloads C

Workloads

developerCapabilities hardware — stories about capabilities hardware in this arenaCapabilities hardware2noneuntestednone yet

Control data retention and deletion G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture2noneuntestednone yet

Opt out of telemetry and usage tracking G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture2noneuntestednone yet

Run a headless browser or full desktop environment inside the sandbox C

Workloads

developerCapabilities hardware — stories about capabilities hardware in this arenaCapabilities hardware2noneuntestednone yet

Start building with a free tier or included credits without talking to sales G

Pricing

developerPricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limits1noneuntestednone yet

Version, review, and roll back my automations G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth1noneuntestednone yet

Opportunities — the stories that would move this product's scores, from its own judged verdictsOpportunitiestop 8 of 42 stories with headroom

What would move Blaxel’s scores — derived from its own judged verdicts, biggest headroom first. Each line quotes what the judge found missing; shipping it (or evidencing it publicly) is the fix.

  1. Automation depth — how much of the product can run unattendedDefine rules that trigger actions automatically on events

    nonemoves PA Scoreimpact 30

    Blaxel's evidence covers deployment, sandboxes, MCP hosting, batch jobs, and scale-to-zero infrastructure, but nothing describes a rules/trigger engine where users define conditions that automatically fire actions on events (e.g., webhooks, event-based automation rules).

  2. Isolation security — stories about isolation security in this arenaRely on a documented hard isolation boundary (microVM or equivalent) between sandboxes and my systems

    nonemoves PA Scoreimpact 30

    Missing: any mention of microVM/hypervisor-based isolation, a security/architecture whitepaper describing the isolation boundary, or third-party/independent verification of sandbox isolation.

  3. Isolation security — stories about isolation security in this arenaRestrict or allow the sandbox's network egress with explicit policy

    nonemoves PA Scoreimpact 30

    Missing: any mention of egress policy configuration, allow/deny lists, network isolation controls, or firewall rules for sandboxes.

  4. Openness — open source, data portability, and self-hosting storiesExport all of my data in open formats and leave

    nonemoves PA Scoreimpact 30

    No evidence pack items address data export or portability in open formats, or any means to leave the platform with one's data; the closest is a migration skill for importing sandbox code from other providers, not exporting data out of Blaxel.

  5. Openness — open source, data portability, and self-hosting storiesSelf-host the core product

    nonemoves PA Scoreimpact 30

    Blaxel is presented entirely as a serverless/managed cloud platform (scale-to-zero, regions, hosted MCP servers, hosted sandboxes) with no mention of a self-hostable core product, on-prem deployment, or open-source server component that a user could run themselves; only a migration skill and CLI/SDK for interacting with the hosted service are documented.

  6. Privacy posture — data-handling and privacy storiesPrevent my data from being used to train AI models

    nonemoves PA Scoreimpact 30

    Missing: any privacy policy or ToS statement on training data usage, opt-out mechanism, or data retention controls.

  7. Snapshot persistence — stories about snapshot persistence in this arenaSnapshot a sandbox and later restore or fork new sandboxes from that snapshot

    nonemoves PA Scoreimpact 30

    The evidence covers sandbox creation, scale-to-zero/resume, preview URLs, templates, and filesystem mounting, but nowhere mentions snapshotting a sandbox's state or forking new sandboxes from a saved snapshot.

  8. Agenticness — how well agents can access and operate the productIssue scoped/least-privilege API credentials for an agent

    nonemoves agent-readyimpact 30

    Evidence shows Blaxel issues generic API keys usable across its APIs, CLI, and SDK (blaxel-docs-12), and preview URLs can require an access token (blaxel-docs-8), but there is no documentation of scoping, role-based permissions, or least-privilege credential configuration for agents specifically.

Showing the top 8 of 42 — every none/partial verdict in the story verdicts table is headroom.

Think a verdict is wrong? Every verdicts-table row has a Flag link — see the methodology.

Coverage map — which docs area, API section, or community source covers which judged storiesCoverage map12 surfaces · 27 covered stories

Where the cited evidence behind each covered verdict came from — the same citations the verdicts table shows, no extra judging.

Sandboxes docs12 stories

Overview docs11 stories

docs.blaxel.ai10 stories

Security docs7 stories

CLI reference docs4 stories

Skills MCP docs4 stories

Agent drive docs4 stories

Jobs docs4 stories

Functions docs3 stories

llms.txt2 stories

OpenAPI spec2 stories

Infrastructure docs2 stories

Probe proofs — replayable recordings from the probe harnessProbe proofs

Replayable recordings from our probe harness — see the Prove-It protocol to submit one.

$curl -s https://docs.blaxel.ai/Get-started.md | head -6reproduced
$ curl -s https://docs.blaxel.ai/Get-started.md | head -6
> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blaxel.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Get started
proves: Point an agent at llms.txt or agent-oriented docsrecorded 2026-09-10
$curl -s https://blaxel.ai/llms.txt | head -6reproduced
$ curl -s https://blaxel.ai/llms.txt | head -6
# Blaxel

> Blaxel is the infrastructure foundation for autonomous agents: hardware-isolated microVM sandboxes that boot in milliseconds, suspend to zero when idle and resume in about 25 milliseconds with memory and filesystem intact; persistent storage (in-memory snapshots, durable Volumes, shared Agent Drive); and programmable networking (outbound allow-lists, static IPs, secret-injecting egress proxy, model gateway).

## Platform
- [Compute](https://blaxel.ai/platform/compute): Sandboxes, Agent Runtime, Batch API, MCP Servers
proves: Point an agent at llms.txt or agent-oriented docsrecorded 2026-09-10
$curl -si -X POST https://api.blaxel.ai/v0/mcp -H 'Content-Type: application/json' -d '<jsonrpc initialize>'reproduced
$ curl -si -X POST https://api.blaxel.ai/v0/mcp -H 'Content-Type: application/json' -d '<jsonrpc initialize>'
HTTP/2 401

content-type: application/json; charset=utf-8

content-length: 60

server: awselb/2.0

date: Thu, 10 Sep 2026 19:14:54 GMT

access-control-allow-headers: Content-Type,Authorization,Content-Length,X-Requested-With,Accept,Origin,Access-Control-Request-Method,Access-Control-Request-Headers,X-Blaxel-Authorization,X-Blaxel-Workspace,mcp-protocol-version,mcp-session-id,Blaxel-Version

x-cf-request-id: aL8ayDb0B3KBDXgPQKrS03GIh1178pWUCmF1W4BEPn-YaqpkD9dwmA==

www-authenticate: Bearer realm="Blaxel MCP", resource_metadata="https://api.blaxel.ai/v0/mcp/.well-known/oauth-protected-resource"

blaxel-version: 2026-04-16

access-control-allow-origin: *

access-control-allow-methods: GET, POST, OPTIONS

x-cache: Error from cloudfront

via: 1.1 61bc5c2437da1cb95629df175a99fca2.cloudfront.net (CloudFront)

x-amz-cf-pop: SFO53-P10

alt-svc: h3=":443"; ma=86400

x-amz-cf-id: aL8ayDb0B3KBDXgPQKrS03GIh1178pWUCmF1W4BEPn-YaqpkD9dwmA==

x-frame-options: DENY

referrer-policy: strict-origin-when-cross-origin

content-security-policy: default-src 'none'; frame-ancestors 'none'; base-uri 'none'

x-content-type-options: nosniff

strict-transport-security: max-age=63072000; includeSubDomains

{"error":"invalid_[redacted]","error_description":"Unauthorized"}
proves: Connect an agent via an official MCP serverrecorded 2026-09-10

Claims vs evidence — vendor claims reconciled against independent verdictsClaims vs evidence

5 of 15 testable claims verified · 1 contradicted → integrity 20/100

14 distinct capability claims found in Blaxel’s own claimed-docs/GitHub materials, reconciled against our judge’s independent verdicts.

5

Verified

9

Unverified

1

Contradicted

13

Undersold

Verified (6)
Unverified (10)
Contradicted (1)
Undersold (13)
Claims outside our story set (2)

Real capability claims found in Blaxel’s own materials, but no story in this arena’s taxonomy covers them yet — that’s feedback on the taxonomy, not a mark against the product.

  • “An open-source migration skill teaches agents how to migrate sandbox code from other providers to Blaxel”

    source ↗

  • “Private preview URLs require a token to access them”

    source ↗
Suggest a story for these →

Business model

free-tierusage-basedenterprise-custom

Pay-as-you-go compute: sandboxes $0.0000115/GB-RAM-sec active, $0.20/GB-mo snapshots; up to $200 free credits, quota tiers unlock with monthly top-ups; custom deployments and paid support add-ons.

pricing ↗

Score trend

How this product’s scores have moved as evidence and verdicts are re-derived — a point per change, not per day.

PA Scoretracked since Sep 10 '26 — no movement recorded yet
Agent-readytracked since Sep 10 '26 — no movement recorded yet

Try Experimental

Run it in the microterminal →

Recorded agent sessions — and a live MCP handshake where the vendor ships one.

Flag

⚑ Flag a verdict

Think a verdict is wrong? Opens a prefilled GitHub issue — or use the ⚑ next to any verdict above.

Badge

Embed this product's score badge →

Hotlinked SVG — always shows the live current score.

For agents

This page as markdown/llms.txt

Data

Evidence (JSON)Verdicts (JSON)

Agent surface uptime MCP up · llms.txt up (tracking since Sep 11 '26)