Claude Code - OnePerfectSlice

The OnePerfectSlice MCP server is hosted — there’s nothing to install. You add the URL once and authenticate through your browser.

Connect

Add the server

claude mcp add --transport http ops https://mcp.oneperfectslice.ai/mcp

Add --scope user to make ops available across all your projects:

claude mcp add --transport http ops --scope user https://mcp.oneperfectslice.ai/mcp

Authenticate

In Claude Code, open the MCP panel:

/mcp

Select ops, choose Authenticate, and your browser will open. Log in to OnePerfectSlice and select the team whose data this connection should access. Claude Code receives the token and reconnects automatically.

Verify

Run /mcp again — ops should show as connected with 9 tools.

Test it

In Claude Code, try:

Use ops to list available slices

You should see a tool call to list_slices and get back a list of your team’s slices.

Troubleshooting

Problem	Solution
`ops` not showing in `/mcp`	Re-run the `claude mcp add` command, then restart Claude Code
Stuck “needs authentication”	Run `/mcp`, select `ops`, and choose Authenticate to complete the browser flow
Browser flow didn’t finish	Make sure you completed login and team selection; then retry from `/mcp`
Wrong team’s data	Reconnect from `/mcp` and select a different team during authentication
Session expired	Tokens refresh automatically; if a call fails, re-authenticate from `/mcp`

Switching teams

Each connection is scoped to one team. To point ops at a different team, run /mcp, choose ops, re-authenticate, and select the new team.

​Connect

​Test it

​Troubleshooting

​Switching teams

Connect

Test it

Troubleshooting

Switching teams