Square Payments vs Stripe

Square Payments and Stripe are both Online Card Payment APIs, compared here on pricing, compliance, capabilities, and developer experience from structured, cited data - not reviews or paid placement. For coding-agent use, Stripe scores higher on agent-friendliness (75 vs 65).

Comparedby a transparent data-readiness score computed from each API's published, sourced fields. No reviews, no paid placement. How we rank.

Data last verified 2026-06-21, with every field cited on each profile.

Head-to-head, from published, cited fields (auto-generated; no paid placement)
Field	Square Payments	Stripe
Starting price	$0.30 transaction + percent	-
Pricing model	Hybrid	Usage
Free tier	✗	✗
Self-serve signup	✓	✓
SOC 2	Type II	Type II
HIPAA	·	✗
GDPR	✓	✓
Webhooks	✓	✓
Sandbox	✓	✓
Documented actions	26	304

Full data and citations: Square Payments · Stripe. See more Online Card Payment APIs.