SDK & Tools

The CLI, client libraries, and infrastructure tools that connect your agents and tools to Keycard.

With the Keycard SDK & CLI, you can:

• Secure any coding agent with keycard run — JIT credentials, policy enforcement, full audit
• Add OAuth authentication to MCP servers in a few lines of code
• Use low-level OAuth primitives for custom authorization flows
• Build agent-to-agent delegation chains with traced, scoped access
• Manage Keycard infrastructure as code with the Terraform provider

CLI

CLI

The fastest way to secure your coding agents.

Install the CLIAuthenticate, manage credentials, and run secure agent sessions from your terminalbrew install keycardai/tap/keycard

Secure Agentic CodingSecure coding agents with scoped credentials, enforced policy, and full auditkeycard run — claude

SDKs

SDKS

Client libraries for building with Keycard. Pick the package that matches your use case.

MCPOAuth authentication for MCP servers — the most common starting point. Python, TypeScript & Go.

OAuthLow-level OAuth 2.0 primitives — discovery, token exchange, JWT, PKCE. Python, TypeScript & Go.

AgentsAgent-to-agent delegation via the A2A protocol. Python.

Terraform ProviderManage Keycard zones, applications, and resources as infrastructure-as-code.

Python

# MCP server auth (most common)
pip install keycardai-mcp

# FastMCP integration
pip install keycardai-mcp-fastmcp

# OAuth primitives only
pip install keycardai-oauth

# Agent-to-agent delegation
pip install keycardai-agents

TypeScript

# MCP server auth (most common)
npm install @keycardai/mcp

# OAuth primitives only
npm install @keycardai/oauth

# Or install everything
npm install @keycardai/sdk

Go

# MCP server auth (most common)
go get github.com/keycardai/credentials-go/mcp

# OAuth primitives only
go get github.com/keycardai/credentials-go/oauth

Source on GitHub — Python, TypeScript, and Go →

API Reference