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.
Code publishes 1 API on the APIs.io network. Tagged areas include Company, Payments, Micropayments, Wallet, and Solana.
The Code catalog on APIs.io includes 1 event-driven AsyncAPI specification.
Code’s developer surface includes documentation, API reference, getting-started guide, support, authentication, changelog, and 17 more developer resources.
Kin Score
APIs 1
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 that expose these APIs to AI agents.
code-mcp.yml
MCP SERVEREvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Code Webhooks
ASYNCAPISecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Get Started 2
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 3
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 8
Pagination, idempotency, versioning, errors, and events
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Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Company 1
The organization behind the API