plures-mcp

An MCP server that gives any AI agent a human in the loop: an ask_humans tool that sends a decision to ID verified people and returns their consensus before the agent acts. Built on Plures.

Works with Claude Desktop, Claude Code, Cursor, VS Code, and agent frameworks that support MCP (OpenAI Agents SDK, LangChain, Vercel AI SDK and more).

Set up

Get a free test key at plures.si, then add the server to your client:

{
  "mcpServers": {
    "plures": {
      "command": "npx",
      "args": ["-y", "plures-mcp"],
      "env": { "PLURES_API_KEY": "pk_test_..." }
    }
  }
}

Claude Code: claude mcp add plures --env PLURES_API_KEY=pk_test_... -- npx -y plures-mcp

A pk_test_ key answers instantly with a simulated result (always the first option, clearly marked as a test), so you can try the flow for free. A pk_live_ key sends tasks to real verified people and is paid from prepaid credit at $0.20 per answer, more for recordings and videos by length. If credit runs out, the tool says so; add credit or turn on auto top up at plures.si/dashboard/billing.

Tools

ask_humans: send a judgment call to verified people.

Set route: "team" to send a decision straight to your own team instead of verified people (for money and account decisions, and confidential or policy calls), team to pick one of your named teams, team_votes to have several of them vote, and category to let your routing rules decide. Live, each internal vote is $0.05.

• question (required): what people should decide, answerable from the context alone
• options (required): 2 to 8 possible answers
• context: the material to judge, as plain text
• image_url, instructions
• audio_url or video_url with media_seconds: a clip up to 3 minutes that people play through before answering
• sensitive: disturbing content, shown only to people who opted in
• verifiers: 1, 3, 5, 7 or 9 (default 3)
• fast: paid speed for decisions that can't wait; served first and pushed at once, $0.10 more per answer live
• use_precedent: look in your judgment graph first. When people already settled cases like this one, it's decided by precedent at once for $0.05 live; one in ten still goes to people as an audit
• wait_seconds: how long to wait for the answer, 0 to 240 (default 45). If people haven't answered by then, the tool returns a task_id to check later.

find_precedents: how people decided similar cases before, closest first, with a suggestion when the case is settled. Free.

get_human_answer: check a task by task_id, optionally waiting.

cancel_human_task: cancel a task that no longer matters.

get_mapping_guide, submit_agent_map, get_agent_map: ask your coding agent to "map this app for Plures". It reads the guide, reads your code where it runs, and sends Plures only the map: the steps, the actions with consequences, and a drafted check for each place a person should look. Open the map in your dashboard to try each check and add it.

Each result tells the agent the answer, how many people agreed and whether it is safe to act on. If you've added your team at plures.si/dashboard/team, decisions verified people don't all agree on go to your team, and the agent gets their decision as the final answer.

When agents should use it

The server tells the agent to ask verified people before acting on judgment calls where a mistake is costly: whether an AI answer is correct and on policy, which of two model responses is better, a customer's tone or intent, whether a listing, document or screenshot matches, a moderation edge case. Not for anything it can check with code or a lookup.

Money and account decisions (refunds, payments, invoices, payouts, account access) go to your own team: the agent sends them with route: "team", or your routing rules can match them by category.

Tasks are shown to strangers, so the agent is told not to include secrets or more personal data than the decision needs.

Environment

• PLURES_API_KEY (required)
• PLURES_BASE_URL (optional, defaults to https://plures.si)
• PLURES_APP (optional): the app tasks and maps belong to, like support-agent

MIT licensed. Source: github.com/plureslabs/plures.