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    <title><![CDATA[The Signl Blog]]></title>
    <link>https://heysignl.com/blog/</link>
    <description><![CDATA[Playbooks, teardowns and market notes on agent-native prospecting: MCP servers, buying signals and GTM engineering.]]></description>
    <language>en</language>
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    <item>
      <title><![CDATA[ChatGPT for B2B prospecting: a setup that works]]></title>
      <link>https://heysignl.com/blog/connect-chatgpt-to-b2b-data/</link>
      <guid isPermaLink="true">https://heysignl.com/blog/connect-chatgpt-to-b2b-data/</guid>
      <pubDate>Tue, 25 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[A prospecting workflow that runs inside ChatGPT with live company data, the exact prompts to use, and the failure modes nobody warns you about.]]></description>
      <category><![CDATA[Playbooks]]></category>
    </item>
    <item>
      <title><![CDATA[GDPR and B2B prospecting in the UK and EU]]></title>
      <link>https://heysignl.com/blog/gdpr-b2b-prospecting/</link>
      <guid isPermaLink="true">https://heysignl.com/blog/gdpr-b2b-prospecting/</guid>
      <pubDate>Tue, 25 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[No, B2B is not exempt. What the ICO actually says about corporate subscribers, why sole traders are different, and where the usual advice is simply wrong.]]></description>
      <category><![CDATA[Playbooks]]></category>
    </item>
    <item>
      <title><![CDATA[Live query vs static database: which data model wins]]></title>
      <link>https://heysignl.com/blog/live-query-vs-static-database/</link>
      <guid isPermaLink="true">https://heysignl.com/blog/live-query-vs-static-database/</guid>
      <pubDate>Tue, 25 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[A static database is a snapshot with a decay curve. A live query is a request with a latency cost. The real trade-off, stated without the vendor spin.]]></description>
      <category><![CDATA[Playbooks]]></category>
    </item>
    <item>
      <title><![CDATA[MCP clients compared for GTM work]]></title>
      <link>https://heysignl.com/blog/mcp-clients-compared/</link>
      <guid isPermaLink="true">https://heysignl.com/blog/mcp-clients-compared/</guid>
      <pubDate>Tue, 25 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[Claude, ChatGPT, Cursor and VS Code compared on what each actually supports: primitives, auth specs, transports and the result limits almost none of them publish.]]></description>
      <category><![CDATA[MCP]]></category>
    </item>
    <item>
      <title><![CDATA[MCP for sales: how AI agents get live GTM data]]></title>
      <link>https://heysignl.com/blog/mcp-for-sales/</link>
      <guid isPermaLink="true">https://heysignl.com/blog/mcp-for-sales/</guid>
      <pubDate>Tue, 25 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[MCP lets an AI agent query live company data, buying signals and verified contacts mid-conversation. How it works, what breaks, and how to evaluate a server.]]></description>
      <category><![CDATA[MCP]]></category>
    </item>
    <item>
      <title><![CDATA[MCP security for revenue teams]]></title>
      <link>https://heysignl.com/blog/mcp-security-for-revenue-teams/</link>
      <guid isPermaLink="true">https://heysignl.com/blog/mcp-security-for-revenue-teams/</guid>
      <pubDate>Tue, 25 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[OAuth versus pasted API keys, what a connector can actually reach, how to revoke one client, and the questions to ask a data vendor before connecting.]]></description>
      <category><![CDATA[MCP]]></category>
    </item>
    <item>
      <title><![CDATA[Why your prospecting agent silently drops results]]></title>
      <link>https://heysignl.com/blog/mcp-tool-result-limits/</link>
      <guid isPermaLink="true">https://heysignl.com/blog/mcp-tool-result-limits/</guid>
      <pubDate>Tue, 25 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[MCP tool results are capped at about 150,000 characters in Claude and 25,000 tokens in Claude Code. What that means when you ask an agent for 100 companies.]]></description>
      <category><![CDATA[MCP]]></category>
    </item>
    <item>
      <title><![CDATA[MCP vs API integration for GTM teams]]></title>
      <link>https://heysignl.com/blog/mcp-vs-api-integration/</link>
      <guid isPermaLink="true">https://heysignl.com/blog/mcp-vs-api-integration/</guid>
      <pubDate>Tue, 25 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[An API needs someone to write the integration. An MCP server describes itself so the agent calls it directly. When each wins, and where Zapier fits.]]></description>
      <category><![CDATA[MCP]]></category>
    </item>
    <item>
      <title><![CDATA[Signl vs Clay: tables or a data layer for agents]]></title>
      <link>https://heysignl.com/blog/signl-vs-clay/</link>
      <guid isPermaLink="true">https://heysignl.com/blog/signl-vs-clay/</guid>
      <pubDate>Tue, 25 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[Clay orchestrates providers in a spreadsheet. Signl answers a question when an agent asks. Two different jobs, compared with our bias stated up front.]]></description>
      <category><![CDATA[MCP]]></category>
    </item>
    <item>
      <title><![CDATA[Waterfall enrichment, explained by someone running one]]></title>
      <link>https://heysignl.com/blog/waterfall-enrichment/</link>
      <guid isPermaLink="true">https://heysignl.com/blog/waterfall-enrichment/</guid>
      <pubDate>Tue, 25 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[Why one email provider is never enough, what each rung actually costs, and the ordering decisions that decide your hit rate and your bill.]]></description>
      <category><![CDATA[Playbooks]]></category>
    </item>
    <item>
      <title><![CDATA[What "verified email" should actually mean]]></title>
      <link>https://heysignl.com/blog/what-verified-email-means/</link>
      <guid isPermaLink="true">https://heysignl.com/blog/what-verified-email-means/</guid>
      <pubDate>Tue, 25 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[Pattern-guessed, cataloged and verified are three different things sold under one word. How to tell which one your data vendor is actually selling you.]]></description>
      <category><![CDATA[Playbooks]]></category>
    </item>
    <item>
      <title><![CDATA[The best MCP servers for sales in 2026, honestly compared]]></title>
      <link>https://heysignl.com/blog/best-mcp-servers-for-sales/</link>
      <guid isPermaLink="true">https://heysignl.com/blog/best-mcp-servers-for-sales/</guid>
      <pubDate>Thu, 20 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[Looking for the best MCP server for sales? Apollo, ZoomInfo, Amplemarket, Crustdata and Signl compared on data, pricing and agent fit, with our bias disclosed.]]></description>
      <category><![CDATA[MCP]]></category>
    </item>
    <item>
      <title><![CDATA[How to connect Claude to live B2B data in 10 minutes]]></title>
      <link>https://heysignl.com/blog/connect-claude-to-b2b-data/</link>
      <guid isPermaLink="true">https://heysignl.com/blog/connect-claude-to-b2b-data/</guid>
      <pubDate>Thu, 20 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[A step-by-step playbook to connect Claude to live B2B data over MCP: setup, first prompts, ICP tuning, and the failure modes to expect on day one.]]></description>
      <category><![CDATA[Playbooks]]></category>
    </item>
    <item>
      <title><![CDATA[The bounce tax: why you're paying for emails that don't exist]]></title>
      <link>https://heysignl.com/blog/stop-paying-for-bounced-emails/</link>
      <guid isPermaLink="true">https://heysignl.com/blog/stop-paying-for-bounced-emails/</guid>
      <pubDate>Thu, 20 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[Most B2B data tools charge per lookup attempt, hit or miss. Here's what that 'bounce tax' really costs at typical match rates, and what hit-only pricing changes.]]></description>
      <category><![CDATA[Playbooks]]></category>
    </item>
    <item>
      <title><![CDATA[What is an MCP server for sales? A plain-English guide]]></title>
      <link>https://heysignl.com/blog/what-is-an-mcp-server-for-sales/</link>
      <guid isPermaLink="true">https://heysignl.com/blog/what-is-an-mcp-server-for-sales/</guid>
      <pubDate>Tue, 18 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[An MCP server for sales lets AI agents like Claude query live B2B data, signals and verified contacts in plain English. How they work and what to look for.]]></description>
      <category><![CDATA[MCP]]></category>
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