swiftapplications

Field guides · native apps

Build for the agent era, on the Mac.

32 field guides for Apple developers and AI-agent builders: Keychain and Secure Enclave, Claude Code and Codex, MCP on macOS, and putting a human in the loop. Every guide ends at the safe way to do it.

Read the field guides Browse apps
CoversClaude CodeClaudeCodexCursorOpenClawHermes
zsh — my-app

Proposal · Stripe

Refund 49.00 EUR

charge ch_3Q… · customer ⟨cust_7F3A⟩

ApproveDeny with a note

Four field guides

Everything between your agent and your keys.

8 guides

Apple security for developers

Store secrets in the macOS Keychain, use the Secure Enclave and Touch ID, sandbox and notarize your Mac app. Practical guides with Swift code.

All apple security guides
8 guides

AI agents on the Mac

Run Claude Code, Codex, Cursor and local models on your Mac without handing them your keys. What agents can reach, and how to limit it.

All ai agents guides
8 guides

MCP on macOS

The Model Context Protocol on a Mac: where each client keeps its config, how to build and debug a server, and how to keep keys out of config files.

All mcp guides
8 guides

Agent approvals & safety

Let AI agents act on Stripe, email and your business tools with a human approving each change. Least privilege, audit logs and prompt injection, explained.

All approvals guides

Where the guides end

The safe stack for AI agents on a Mac.

Agents read freely, keys stay sealed, and anything that changes money, data or messages waits for you. This is the MoltenRock suite, built in Swift by the people who write these guides.

Your agentsClaude Code, Codex, Cursor, OpenClaw, Hermes
MoltenRock Connect30 business tools over one local MCP server; agents never see a key
MoltenRockThe vault at the core: keys sealed by the Secure Enclave
The Human QueueChanges wait for your Touch ID; live for Stripe
MoltenMailRead and draft email, never send
MoltenViewYour agent shows its work on your Mac
Get MoltenRock, free See the Human Queue

Latest

New in the field guides

All 32 guides
AI agentsA checklist for running AI agents safely on your MacTwelve practical checks for running AI agents on macOS: folders, permissions, keys, MCP, approvals, audit logs and network, from a developer’s point of view.3 min readRead Apple securityApp Sandbox on macOS: the entitlements an app actually needsWhat the macOS App Sandbox blocks, the entitlements for network, files and app groups, how to inspect an app’s entitlements, and the 104-byte socket path trap.3 min readRead Apple securityAsk for Touch ID before releasing a secret (LocalAuthentication and Keychain)Two ways to require Touch ID on a Mac: LocalAuthentication for a prompt, and Keychain access control so the system itself refuses without a fingerprint.3 min readRead ApprovalsAudit logs for AI agents: what to record, and whyWhat an AI agent audit log should capture (agent, tool, redacted inputs, result, approval and approver), where to keep it, and how long, without leaking secrets.3 min readRead MCPBuild an MCP server in Swift with the official Swift SDKA minimal MCP server in Swift using the official swift-sdk: package setup, one tool, the stdio transport, logging to stderr, and adding it to Claude Code.3 min readRead AI agentsCursor on macOS: MCP servers and where the keys goWhere Cursor keeps MCP config on a Mac (global and per project), the mcp.json format, and a wrapper-script pattern that keeps API keys out of the file.3 min readRead

What is Swift Applications?

Native apps, and the know-how to use them.

A curated showcase of native Mac apps built for the AI agent ecosystem, and the field guides behind them. Every app is picked for quality, security and how well it works with agents.

Privacy first

Local-first apps that respect your data. No cloud required, no tracking, no surprises.

Native performance

Built with Swift for Apple silicon: fast, efficient and reliable.

Apple security

The Keychain, Secure Enclave, Touch ID and App Sandbox, used properly.

Featured apps

Built for AI agents, built for the Mac

View all apps
MLiveMoltenRock ConnectOne local MCP server for 30 business platforms, and your agents never see a keymacOSMLiveMoltenRockThe encrypted vault for your API keys and AI agentsmacOSMLiveMoltenMailLet an AI agent read and draft your email, never send itmacOSMLiveMoltenViewA canvas on your Mac where your AI agent shows its workmacOS

Why native Swift?

What web apps can’t do for agents.

Performance

Native code runs faster and uses less energy on Apple silicon.

Security

Secure Enclave, Keychain and App Sandbox: features web apps can’t reach.

A human in the loop

Touch ID approvals the system enforces, not a button an agent can click.

humanqueue.com

Supervising agents is a skill. Prove you have it.

Free training on approving what agents propose, then the Certified AI Agent Supervisor exam: 20 scenarios, $29 only if you pass.

Start the free training Read the guide

Questions

Frequently asked

What are Swift Applications?

Swift Applications is a set of field guides and a curated directory of native Mac apps for building with AI agents safely: storing keys, running agents like Claude Code and Codex, using MCP on macOS, and putting a person in the loop.

Why use native Swift apps for AI agents?

Native apps can use the Mac’s own security: the Keychain, the Secure Enclave, Touch ID and the App Sandbox. That lets them keep keys away from agents and ask you before anything important happens, which web and cross-platform tools can’t do as well.

What AI agents are supported?

The guides cover Claude Code, Claude Desktop, Codex, Cursor, OpenClaw, Hermes and other MCP-compatible agents. Each app listing says which agents it works with.

How do I submit my Swift app?

Use the Submit App page. Your app should be a native Mac or iOS app that works with AI agents and respects privacy. We review every submission and reply by email.

Who makes Swift Applications?

Swift Applications is a Goldcote site, alongside MoltenRock and humanqueue.com. Guides point to our own apps where they solve the problem, and say so.