Justuno

Fair

Agent Native Score

Free TierAPI Key Auth

Justuno is a conversion rate optimization platform that helps e-commerce businesses create personalized popups, forms, and landing pages to capture leads and boost sales. It provides tools for A/B testing, segmentation, and visitor targeting.

Categories: Conversion Optimization · Marketing Automation · Ecommerce

#2 of 4 in Conversion Optimization · #6 of 10 in Marketing Automation · #21 of 28 in Ecommerce

Checklist Breakdown

12 of 33 checks passed. 14 unscored.

Discovery 50%

Can an agent find and understand this tool without a web search?

✗ Published OpenAPI/Swagger spec

✗ Has llms.txt or llms-full.txt

✗ Has an MCP server (official or well-maintained)

✗ MCP server listed in a public registry

✓ API reference docs are publicly accessible

✓ Docs include runnable code examples

✓ Has a public changelog or release notes

✓ Has a public status page

Auth & Onboarding 50%

Can an agent create an account and get credentials without human intervention?

✗ Signup does not require CAPTCHA

✗ Signup does not require phone verification

✓ Supports API key auth (not only OAuth)

✗ API key obtainable without manual approval

✓ No mandatory billing info to start

✓ Can sign up without creating an organization

Pricing 100%

Can an agent operate autonomously without upfront payment or contracts?

✓ Has a free tier

✓ Usage-based pricing available

✓ No minimum contract or commitment

✓ Pricing page is public (no 'contact sales')

✓ Free tier sufficient for testing (not just a trial)

Agent Tooling Not yet scored

How well does the API work for non-human consumers?

— SDK available in 2+ languages

— Structured error responses (JSON with error codes)

— Idempotency support on write endpoints

— Pagination on list endpoints

— Webhook/event support

— Sandbox or test mode available

— Rate limit headers in responses

— Consistent REST resource naming

Reliability Not yet scored

Does the tool fail gracefully when an agent makes a mistake?

— Meaningful error messages (not just 500)

— 429 responses include Retry-After header

— Documented uptime SLA (99.9%+)

— Graceful degradation under rate limits

— Request IDs in responses for debugging

— API versioning supported

Reviewer Notes

Justuno offers basic API access via API key authentication and a free tier, but lacks modern agent discovery mechanisms—no MCP server, OpenAPI spec, or llms.txt. Account creation requires human signup with email verification and likely dashboard navigation. The API documentation is limited and not designed for programmatic agent-first workflows, making tooling integration challenging. Reliability appears moderate for an established platform, but no sandbox environment is available for safe testing. The platform is primarily UI-driven rather than API-native, significantly limiting autonomous agent capability.

Justuno

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