"Described well" by AI vs "callable" by an agent — a fork most of us haven't noticed
A comment thread here last week crystallized something I'd been circling for months, so I want to open it up.
Most of us optimizing for AI visibility are playing one game: being described well. Clean pages, clear claims, structured data, so when someone asks an assistant about our space, we get cited accurately. That's real work and it matters.
But there's a second, very different game: being callable. Not "the AI mentions you" but "the AI invokes your tool directly, mid-conversation, with no human in the loop." For that you don't write better copy — you build actual tools (MCP servers, etc.) with tight inputs, honest outputs, and error messages a machine can relay.
What surprised me building the second kind: it forces honesty. When an agent calls your tool and it returns garbage or guesses, that goes straight to the user — there's no marketing layer in between to smooth it over. It pushed me to make my tool say "I don't have this" instead of bluffing, because bluffing in an agent context is instantly visible.
So I think it's a genuine fork, not a feature:
- "Described well" = a content/positioning game (most of us are here)
- "Callable" = a product game (far fewer are here, far less competition)
For some products only the first makes sense. For tools with a clear input→output shape, the second might be the cheaper, less crowded bet.
Curious where others land: is "callable by an agent" on your radar, or does it feel like overkill for what you're building?
I hadn't thought about it in those terms before.
Getting mentioned by an AI and getting trusted to take an action on a user's behalf feel like two completely different bars to clear.
Makes me wonder how many products are optimizing for one while assuming they've achieved the other.
Thanks for engaging with this — and that last line of yours is the sharp one: "optimizing for one while assuming they've achieved the other." I think it's extremely common, and the trap is that the first game feels like progress on the second. You polish your landing page, you get cited in a few AI answers, and it looks like you're "AI-ready." But none of that makes you callable — a model can describe you perfectly and still have no way to actually invoke you.
The tell, I think, is whether there's a machine-readable contract. If the only way an AI can use you is by reading your marketing and paraphrasing it, you're in game one. If it can call a defined tool with structured input and get structured output back, you're in game two. Most products have the first and assume it implies the second.
What's interesting is the second bar is lower than it sounds for a lot of products — if you already have an API, you're most of the way to being callable. The gap is usually awareness, not engineering.
Are you building toward the callable side, or mostly thinking about it for now?
I'm building toward that distinction too, which is why your reply caught my attention.
I think there's another decision underneath it that's probably too much to unpack properly in a thread.
What's the best email to reach you on?
Happy to keep going! I'd actually lean toward keeping it in the open if you're up for it — whatever deeper decision you're circling is probably useful to others here too, and public threads tend to pull better answers than a 1:1.
But if it really needs to go offline, the contact on my site (checkmyvin.net) reaches me. What's the decision you're chewing on?
Just sent it over to [email protected].