MockAgent

One-click local mock servers so an agent can test its own API integration code without real keys or charges.

Price: $15 one-time

Included free

• Stripe + generic REST mock server, manual start/stop
• Status bar active-mocks indicator

Unlocked with a license

• Twilio + SendGrid mock fixtures
• Request log webview + pre-deploy swap-back safety check

Getting a license

Open the MockAgent sidebar (activity bar icon) and click Get License. After purchase you'll receive a license key — paste it into the sidebar and click Activate License. Keys are machine-locked; use Move to another machine… in the sidebar before reinstalling on a new device.

Notes and limitations

"Check for Leftover Mock Endpoints" greps the workspace for the literal localhost:<port> / 127.0.0.1:<port> strings of ports used by mock servers started this session — it does not persist across VS Code restarts and won't catch endpoints referenced through an environment variable or config indirection. Auto-detection of which third-party SDKs are in play (so MockAgent could suggest fixtures automatically) is not implemented; it's an unimplemented v2 stretch goal.