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Claude Code

This connects Claude Code to the Halyard MCP server so the agent can search knowledge, ask experts, and capture answers. For developers wiring up a single client.

There are two ways to register Halyard. The plugin also installs Halyard’s prompt rules; the direct registration is the minimal MCP-only path.

Add Halyard’s marketplace and install the plugin from inside Claude Code:

/plugin marketplace add halyard-labs/claude-plugin-marketplace
/plugin install halyard@halyard-labs

Using the Claude desktop app (Cowork) instead of the terminal? Add the same plugin through the UI — see Claude desktop app.

Register the remote server directly:

Terminal window
claude mcp add --transport http halyard https://mcp.usehalyard.ai

To make Halyard available to everyone who opens a repo, commit a .claude/settings.json that enables the plugin and declares the marketplace it comes from:

.claude/settings.json
{
"enabledPlugins": ["halyard@halyard-labs"],
"extraKnownMarketplaces": {
"halyard-labs": {
"source": {
"source": "github",
"repo": "halyard-labs/claude-plugin-marketplace"
}
}
}
}

The first time the agent calls a Halyard tool, Claude Code opens a browser to authorize against your Halyard account. Approve it once; the bearer token is then attached to every request.

Ask the agent to identify you and run a search:

Use Halyard to tell me who I am, then search the knowledge base for our most recent decision.

Expect a whoami call returning your user and organization, followed by a search_knowledge call. If the tools do not appear, see Troubleshooting.