Urlbox

Captures pixel-perfect screenshots, PDFs, and metadata of any URL using a managed headless browser fleet.

Evaluated Mar 07, 2026 (0d ago) vcurrent

Homepage ↗ Developer Tools screenshots website-capture headless-browser pdf automation

⚙ Agent Friendliness

/ 100

Can an agent use this?

🔒 Security

/ 100

Is it safe for agents?

⚡ Reliability

/ 100

Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality

Documentation

Error Messages

Auth Simplicity

Rate Limits

🔒 Security

TLS Enforcement

100

Auth Strength

Scope Granularity

Dep. Hygiene

Secret Handling

HMAC signing prevents key exposure in URLs; API key must still be protected server-side; SSRF considerations apply when accepting user-supplied URLs.

⚡ Reliability

Uptime/SLA

Version Stability

Breaking Changes

Error Recovery

Best When

You need a reliable, managed screenshot service with fine-grained rendering controls without managing your own browser infrastructure.

Avoid When

You need interactive browser automation or structured data extraction rather than visual capture.

Use Cases

• Generate website screenshots for visual regression testing in CI/CD pipelines
• Capture full-page PDF snapshots of legal or compliance web pages for archival agents
• Monitor competitor landing pages by taking scheduled screenshots for change detection
• Produce OG image previews of URLs for link preview features in applications
• Render and capture JavaScript-heavy SPAs that require full browser execution

Not For

• Extracting structured data from web pages (use a dedicated scraping API instead)
• Automating multi-step user interactions or form submissions on websites
• High-frequency real-time monitoring at sub-second intervals

Interface

REST API

Yes

GraphQL

gRPC

MCP Server

SDK

Yes

Webhooks

Yes

Authentication

Methods: api_key hmac_token

OAuth: No Scopes: No

API key used directly; HMAC token signing available for secure URL-based access to prevent key exposure in client-side code.

Pricing

Model: usage_based

Free tier: Yes

Requires CC: No

Renders include screenshots, PDFs, and metadata calls; async rendering available on higher plans.

Agent Metadata

Pagination

none

Idempotent

Full

Retry Guidance

Documented

Known Gotchas

⚠ Pages with bot detection (Cloudflare, reCAPTCHA) may return blank or error screenshots without a clear failure signal
⚠ The wait_for parameter must be tuned per target site; incorrect values cause premature or excessively delayed captures
⚠ HMAC token expiry must be managed by the agent; expired tokens return 401 without explicit expiry information in the error
⚠ Full-page screenshots of very long pages can produce extremely large image files that exceed downstream size limits
⚠ Cookie and header injection for authenticated pages requires careful session management; cookies may expire between agent calls

Alternatives

screenshotone-api microlink-api browserless-api

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Scores are editorial opinions as of 2026-03-07.