The SaaS Collapse Hits Developer Tools First

AI agents don't evaluate your product - they decide whether to replace it.

Engineering time is now nearly free

SaaS value prop was "we save you engineering time." Agents made engineering time nearly free.

3-5 person team + AI coding agent can reimplement a major compute platform in ~6 months
Cost of "build it yourself" collapsed
Value prop evaporates

Engineer asks agent "should I use X?" - agent evaluates the product AND can build the replacement.

Same dynamic as consultants - they evaluate tools, or suggest building it for you
But consultants have natural brakes: cost, time, risk
Agents removed all the brakes - builds it now, for free, iterates until it works
Adoption cost (API, auth, billing, constraints) vs. implementation cost (near zero)
Implementation wins every time

Not uniform across SaaS. Developer tools are in the blast radius first because three things compound:

Developers adopted agents first, trust them on code decisions more than any other role
The products being evaluated are themselves code
Agent is assessing software against its own ability to produce software - tightest possible feedback loop

Developers fear AI replacing them. Dev tool companies are one level up the same food chain.

Exposed: pure software abstraction layers - "we saved you from building this"
Durable: network effects (Stripe), proprietary data (Bloomberg), physical infrastructure (Twilio)
Asymmetry: open-source frameworks get more durable while commercial wrappers die - agent uses the framework directly, doesn't need the managed platform

Companies that see this are reorienting around agents as the primary user:

"We already exist" - agents have no switching costs. "We're more reliable" - agents iterate. Need something agents genuinely can't replicate.