Engineering
A New Enum Value Breaks Clients That Trusted Your List
A new enum value passes every schema diff and still breaks clients that validate responses. Read as text, send from a closed list, and mark it Breaking.
Oct 7, 2026
#
Clipwright
10 posts
Startup Ops
What One Second of AI Video Costs Us, Layer by Layer
A video passes through several paid layers. We measured some of them; the rest are price lists and estimates, and each row says which.
Sep 24, 2026
Engineering
The Bill Is Authorised by the Work, Not by Your Spend
Paying a vendor feels like it should authorise charging the client. It does not, and the wording that says otherwise keeps coming back into the rules.
Sep 18, 2026
AI & Automation
We Shipped an Agent-Native API Without OpenAPI
No /openapi.json, no generator, no spec to drift. The machine-readable entry point is the MCP server's tools/list — and that turned out to be the honest choice, not the lazy one.
Sep 17, 2026
Engineering
Negotiate the Format Before You Pay the Vendor
A 3% aspect mismatch is a rounding error. A 40% one is a different video. The threshold between them decides whether you refuse before the bill or apologise after.
Sep 16, 2026
AI & Automation
Never Answer an Agent With a Silent Substitution
An unmet parameter should come back named. We learned why the hard way: two warnings went missing for weeks and every test stayed green.
Sep 15, 2026
Engineering
One Reviewer Approved It. The Other Found the Bug.
Six blockers across four consecutive stories, and the two reviews agreed on one of them. Here is what running both actually cost us, and the rule we ended up with.
Sep 14, 2026
Engineering
Your Container Lies About Its Size, and Your Library Believes It
Our render container reported 32 cores when it had 4. Remotion sized its defaults from that and OOMed. Five confident diagnoses died before the answer turned up in a version field nobody had thought to print.
Sep 3, 2026
Engineering
We Charged 900 Credits for a Video That Didn't Exist
Our billing rule said: failed run after a paid vendor call means we charge. It sounded fair. On a run that only paid for speech, it was false, and it cost a customer.
Sep 3, 2026
Engineering
Your Agent Isn't Confused. Your Schema Lied to It.
Teams blame MCP when agents fumble their tools. We shipped an MCP server for a video API and found the real defect: offering a field you answer with a 400.
Sep 3, 2026