Let's say you're building an agent. It reads Linear issues, pulls context from Gmail, opens GitHub PRs, and posts updates in Slack. Or maybe it's a system of agents with an orchestrator that hands off to specialists, each with its own job to do. Now you need to figure out how to secure everything, and you end up with several browser tabs pulling you in different directions. One tab is selling you an MCP gateway. Another is a non-human identity inventory tool. Another is a runtime guardrail that watches for prompt injection. Another is a connector platform. Another is a policy engine. Another is a new spec that wants to replace API keys entirely. They all look like answers to "how do I secure my agent," but they actually address different questions. I work on agent identity and access at Keycard , and agent security solutions are proliferating so rapidly it's challenging to know what you actually need for what, and why.…