CVMI (wip)

ContextVM Interface (CVMI) is a CLI tool that allows you to navigate and use the ContextVM protocol. It provides a set of tools and skills to help you interact, and implement the protocol.

Note: This project is a fork of the skills CLI by Vercel Labs.

Quick Start

# Install ContextVM skills interactively
npx cvmi add

# Install a specific skill from the ContextVM repository
npx cvmi add --skill overview

Roadmap

• [x] cvmi add - Install skills with interactive picker
• [x] cvmi add --skill <name> - Install specific skills
• [x] cvmi serve - Expose a server (gateway)
• [x] cvmi use - Use a server from nostr as stdio (proxy)
• [x] cvmi discover - Discover announced servers on relays
• [ ] cvmi cn - Compile a server to code (ctxcn)
• [x] cvmi call - Call methods from a server
• [ ] cvmi inspect - Inspect server schema

Configuration

Configuration is stored in JSON format with the following priority:

1. CLI flags (highest priority)
2. Custom config: --config <path>
3. Project-level: ./.cvmi.json
4. Global: ~/.cvmi/config.json
5. Environment variables

Global config path: ~/.cvmi/config.json (separate from ~/.agents/ used for skills)

Nostr MCP environment variables:

• CVMI_SERVE_* / legacy CVMI_GATEWAY_* for serve/gateway settings
• CVMI_USE_* / legacy CVMI_PROXY_* for use/proxy settings
• CVMI_CALL_PRIVATE_KEY for direct cvmi call requests

Additional serve env vars:

• CVMI_SERVE_URL / CVMI_GATEWAY_URL to set the remote Streamable HTTP MCP server URL

Logging environment variables (SDK-level): The underlying @contextvm/sdk uses these env vars to control logging:

| Variable | Values | Description | | ----------------- | ------------------------------------------ | --------------------------------------------------- | | LOG_LEVEL | debug, info, warn, error, silent | Minimum log level to output (default: info) | | LOG_DESTINATION | stderr, stdout, file | Where to write logs (default: stderr) | | LOG_FILE | path string | Path to log file (used when LOG_DESTINATION=file) | | LOG_ENABLED | true, false | Disable all logging with false (default: true) |

Example: Run serve with debug logging to a file

LOG_LEVEL=debug LOG_DESTINATION=file LOG_FILE=./cvmi.log cvmi serve -- npx -y @modelcontextprotocol/server-filesystem /tmp

Example: Run use with only warnings and errors

LOG_LEVEL=warn cvmi use npub1q...

Example global config (~/.cvmi/config.json):

{
  "serve": {
    "url": "https://my.mcp.com/mcp",
    "command": "npx",
    "args": ["@modelcontextprotocol/server-filesystem", "."],
    "relays": ["wss://relay.damus.io"],
    "public": false,
    "encryption": "optional"
  },
  "use": {
    "relays": ["wss://relay.damus.io"],
    "serverPubkey": "npub1...",
    "encryption": "optional"
  },
  "servers": {
    "weather": {
      "pubkey": "npub1...",
      "relays": ["wss://relay.contextvm.org"]
    }
  }
}

Private keys are not stored in JSON config. Set them with environment variables or CLI flags instead.

cvmi call

cvmi call resolves server targets using this order:

1. Direct CLI flags such as --relays and --config
2. Custom config passed via --config <path>
3. Project config in ./.cvmi.json
4. Global config in ~/.cvmi/config.json

Create reusable aliases from the CLI:

# Save an alias in the current project's .cvmi.json
cvmi config add weather nprofile1example

# Save an alias globally
cvmi config add --global weather nprofile1example

# Call through the alias
cvmi call weather tool:weather.get_current city=Lisbon

# Use an alternate config file
cvmi call weather tool:weather.get_current city=Lisbon --config ./custom.cvmi.json

cvmi discover

cvmi discover queries relay-stored server announcement events so you can find public ContextVM servers before using cvmi call.

It is intentionally config-less and straightforward:

• pass relays explicitly with --relays, or
• rely on the built-in default relays

Examples:

# Discover public servers on the default relays
cvmi discover

# Discover on a specific relay
cvmi discover --relays wss://relay.contextvm.org

# Limit the number of returned announcements
cvmi discover --limit 10

# Get machine-readable JSON output
cvmi discover --raw

Note: For serve, you should configure either serve.url (remote Streamable HTTP MCP server) or serve.command/serve.args (spawn local stdio MCP server).

Public discovery and relay-list metadata

The underlying SDK can publish two complementary discoverability artifacts:

• kind:11316-11320 server announcement events for capabilities and metadata
• kind:10002 relay-list metadata so clients can discover where the server is reachable

Recommended behavior:

• keep your operational relays list focused on where the server actually runs
• use bootstrapRelayUrls to publish discoverability metadata more broadly
• keep publishRelayList enabled unless you explicitly want to opt out, including for private servers

This mirrors the CEP-17 model where discoverability publication targets can be broader than the relays advertised to clients.

About quoting commands

cvmi serve spawns the MCP server directly (no shell). Prefer passing the command and its arguments as separate tokens:

cvmi serve -- npx -y @modelcontextprotocol/server-filesystem /tmp

If you accidentally pass a full command as a single quoted string (e.g. "npx -y ..."), cvmi will split it into an executable + args for you.

Passing environment variables to the spawned MCP server

Use --env / -e (repeatable):

cvmi serve -e LOG_LEVEL=debug -- npx -y @modelcontextprotocol/server-filesystem /tmp

You can also set it in config under serve.env.

Note: The CLI auto-generates a private key if none is provided. Keys can be specified in hex format (with or without 0x prefix) or NIP-19 bech32 format (nsec1... for private keys, npub1... for public keys).

License

MIT