Blog

The Signl Blog

Playbooks, comparisons and market notes on turning LinkedIn engagement into sales conversations, and on agent-native prospecting.

MCP

MCP for sales: how AI agents get live GTM data

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.

MCP

MCP security for revenue teams

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.

MCP

Why your prospecting agent silently drops results

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.

MCP

MCP vs API integration for GTM teams

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.

MCP

Signl vs Clay: tables or a data layer for agents

Clay orchestrates providers in a spreadsheet. Signl answers a question when an agent asks. Two different jobs, compared with our bias stated up front.

Playbooks

Waterfall enrichment, explained by someone running one

Why one email provider is never enough, what each rung actually costs, and the ordering decisions that decide your hit rate and your bill.

Playbooks

What "verified email" should actually mean

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.

MCP

The best MCP servers for sales in 2026, honestly compared

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.