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 is listed with 1 API on the APIs.io network. Tagged areas include Company, Payments, Micropayments, Wallets, 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
Markets this provider is in provisional
The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.
| Market | Position | Depth | Registered MCP server | Declares compatibility |
|---|---|---|---|---|
| x402 Micropayments & Agentic Pay-per-Call | distribution | 19.2 (thin) | - | - |
| Buf Schema Registry (public Protocol Buffers modules, gRPC / ConnectRPC schema publishers) | distribution | 19.2 (thin) | - | - |
Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
Standards implemented 1
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
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.
Agent Skills 1
Packaged agent skills for driving this provider's APIs from an AI assistant.
Request and verify a Code payment
AGENT SKILLEvent 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
Scroll for all 8
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
Source (apis.yml)
Code API — frequently asked questions
Does Code have an API?
Yes. APIs.io lists 1 API from Code, including Code Protobuf API.
How do I authenticate with the Code API?
Code uses bearer-token authentication (self-custodial-keypair/jwt · 2 schemes). The details are profiled on APIs.io as Code Authentication.
Is the Code API ready for AI agents?
Code has a Kin Score of 33.1 out of 100 (thin) and an Agent Readiness score of 24.6 (agent-aware), scored by API Evangelist on 2026-11-06.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.