Code

Code is an open, self-custodial payments protocol and mobile wallet built on the Solana blockchain. Its SDK lets any web developer embed a "Pay with Code" button and accept permissionless micropayments — as little as 5 cents per transaction plus a flat 1-cent blockchain fee — with no sign-up required and just a few lines of code. The API is defined as gRPC/Protobuf services (code-protobuf-api): clients sign transaction intents with a self-custodial Ed25519 keypair, payments are created as idempotent payment intents, and completion is confirmed server-side or via JWT-signed webhooks. The entire stack — SDKs (JavaScript, Go, Python, PHP), the Code VM, and the on-chain Solana programs — is open source under the code-payments GitHub org. Code was seeded by Union Square Ventures.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

How we profile Code

Each block below is one kind of artifact we hold for Code. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

APIs 1

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

Individual APIs this provider publishes, each with its own machine-readable definition.

Code Protobuf API

The Code payments gRPC/Protobuf API — account, currency, messaging, and transaction (intent/swap) services that power the Code wallet and SDK.

MCP Servers 1

Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.

Model Context Protocol servers that expose these APIs to AI agents.

code-mcp.yml

MCP SERVER

Event Specifications 1

Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Code Webhooks

ASYNCAPI

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Code Authentication

self-custodial-keypair/jwt · 2 schemes

SECURITY

Code Domain Security

DMARC

SECURITY

Resources

Every other property we hold for Code — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

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