Turn Claude Code into a sales agent.
One that knows a buyer from a bystander.

Published 30 September 2026 · tools checked against the live MCP server the same day

What you need

• Claude Code, in any project.
• An operator key, from your console once you are on a plan.
• A few minutes to describe what you sell (step 2 has Claude Code do most of it).

1. Connect SignalPipe

One command adds the server to the current project:

claude mcp add --transport http signalpipe https://api.signalpipe.io/mcp \
  --header "Authorization: Bearer YOUR_OPERATOR_KEY"

To use it in every project, add --scope user:

claude mcp add --scope user --transport http signalpipe https://api.signalpipe.io/mcp \
  --header "Authorization: Bearer YOUR_OPERATOR_KEY"

Or share it with your team in the project’s .mcp.json. Claude Code fills in environment variables there, so the key stays out of the repository:

{
  "mcpServers": {
    "signalpipe": {
      "type": "http",
      "url": "https://api.signalpipe.io/mcp",
      "headers": { "Authorization": "Bearer ${SIGNALPIPE_OPERATOR_KEY}" }
    }
  }
}

Run /mcp inside Claude Code to check the server is connected.

2. Describe what you sell, once

SignalPipe judges text against a product profile: who buys it, what it does for them, and a few anchor sentences written in the buyer’s voice. Let Claude Code interview you:

Set up SignalPipe for my product. Ask me what it is, who buys it and
what it does for them. Suggest anchor sentences with suggest_anchors,
show them to me, and add the product with add_product once I approve.

It calls suggest_anchors, shows you the sentences, and calls add_product after you approve them. Describe one buyer, narrowly. If you have clearly different buyers, add each as its own product.

3. Judge the text you already have

This is the core of a sales agent that does not waste your time. Claude Code already reads your email exports, support tickets, CRM notes and the posts other MCP servers fetch. Hand any of it to score_signal:

Here is an email thread from a prospect. Judge the last message with
SignalPipe's score_signal, using my product, source_hint "gmail" and the
earlier messages as context. Tell me the verdict, whether the judges
agreed, and whether it is worth a reply.

Each verdict says whether the text reads as a buyer, a competitor mention, churn risk or noise; whether the three judges were needed; and whether they agreed. When the judges split, read that one yourself. When a verdict is marked degraded, the panel could not run, so treat it as provisional rather than “not a buyer”. For a reply or a comment, pass the message it answers as context, as the prompt above does. Replies to cold email work the same way; the Instantly recipe pairs Instantly’s MCP server with this one. For what a written buying signal looks like, see buying signals.

4. Work a lead queue (optional)

If you want SignalPipe to find text for you as well, add feeds: any RSS or Atom feed from a community, forum or search alert. Check a feed before you add it:

Check whether https://hnrss.org/newest?q=crm+alternative has buyers for
my product with preview_station. If the verdict is VIABLE or MARGINAL,
add it as a station.

Leads the judges keep arrive with a drafted reply that answers what the person asked. Review them in Claude Code:

Show me today's leads. For the strongest one, get the drafting context
with draft_mission, write a reply that answers what they asked, show it
to me, and upload it with upload_draft once I have edited it.

Approve what is worth sending with approve_mission, or record a reply you already made by hand with mark_sent. Reject the rest with reject_mission and a reason, so the feed it came from learns; if a post has simply disappeared, delete_mission clears it without teaching anything.

5. Follow up with the people who answer

The founder I replied to yesterday wrote back: "Sounds useful. What
does it cost for a team of three?" Record it with record_reply and tell
me their new stage and what to say next.

record_reply reads the reply and updates the prospect’s temperature, stage and objections. It also says when someone asked not to be contacted, and when a reply explicitly asks to continue in private: Reddit and X require that consent before an app sends a private message. get_pipeline lists your prospects hottest first.

What it will not do

• Send anything without your approval. Public Reddit comments, X replies and private messages are never approved automatically.
• Post from SignalPipe’s accounts. Replies go out from your side, from your own accounts.
• Connect to your inbox, CRM or social accounts. Claude Code reads those with your permission and passes SignalPipe the text.

The 24 tools

Every tool and parameter carries its own description, which Claude Code reads before calling it. The same server is on the agents page, with the OpenAPI spec for scripts.

What it costs

Judging is metered in judgements. One judgement is one run of the three-judge panel. Text that is clearly noise, or clearly a buyer, is decided without the panel and costs nothing, so judging normally spends well below one judgement per message. Plans start at $29 a month for 3,000; see pricing.