For Developers & Engineering Teams

Payment infrastructure built for engineers, by engineers.

API-first by default. MCP-native across every product. Real documentation, not marketing pages dressed as docs. If you're integrating Paying.co into your stack, here's what to expect — clean endpoints, predictable auth, well-typed responses, and webhooks that fire when they say they will.

3
MCP Servers Live
7
API-First Products
1.2M+
Links Shortened via Puny.io
20K+
Sites Built via Landed.net
The Developer Reality

Payment APIs shouldn't require a phone call.

We've integrated against enough payment APIs to know what makes a developer experience good or terrible. Here are the principles we hold ourselves to.

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Real documentation, not marketing pages

Every endpoint documented with request shapes, response shapes, edge cases, and runnable examples. No “contact your account manager for details.” If a developer can't self-serve their integration end-to-end from the docs alone, the docs are broken.

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MCP-native by default across the suite

Every product in our suite ships with an MCP server — Landed.net, Puny.io, and Ask all expose their capabilities to AI agents and tools natively. Building agentic payment workflows shouldn't require glue code to convert your APIs into something an LLM can use.

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Predictable auth, sane error handling

Bearer tokens. Scoped API keys. Webhook signatures you can actually verify. Error responses with stable codes, machine-readable details, and human-readable messages. The boring fundamentals other payment APIs get wrong — we get right.

Developer Surface Area

Everything you need to integrate, ship, and operate.

The full developer surface across Paying.co products and services. Built to be self-serve, opinionated where it counts, and flexible where it should be.

Product Ecosystem

Every product, API-first and MCP-native.

Each product in our suite ships with both REST APIs and MCP server interfaces. Build classic integrations or wire them into agentic workflows — same primitives, different protocols.

Tell us your integration.

Send a short note about what you're integrating, what stack you're working in, and where you're stuck. You'll hear back from an engineer who's actually shipped against our APIs — not a sales rep with a pricing deck.

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Response within one business day Integration questions usually get answered in the first reply
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Engineer-to-engineer conversations Your questions go directly to someone who's written against the APIs
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API-first, MCP-native by default Every product exposes both REST and MCP — pick the protocol that fits your stack
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Real documentation, runnable examples Docs include request/response shapes, edge cases, and code you can copy-paste
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Built with security in mind Scoped keys, signed webhooks, audit logs — the boring fundamentals done right