Add CreateJwt MCP tool for Dev Proxy jwt create command

[Copilot]

New MCP tool that wraps devproxy jwt create to let LLM clients generate JWT tokens on demand.

Changes

• src/createJwt.ts — New module executing devproxy jwt create via execFile (not exec) to avoid shell injection from user-supplied args. Supports all CLI parameters: name, issuer, audiences, roles, scopes, claims, validFor, signingKey.
• src/index.ts — Registers CreateJwt tool with Zod schemas. All parameters optional, matching CLI defaults.

Usage

The tool accepts the same parameters as the CLI:

{
  "name": "Megan Bowen",
  "issuer": "my-app",
  "audiences": ["https://myserver.com"],
  "roles": ["admin"],
  "scopes": ["read", "write"],
  "claims": ["custom:claim"],
  "validFor": 120
}

Array parameters (audiences, roles, scopes, claims) expand to repeated --flag value pairs per the CLI convention.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• learn.microsoft.com
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)