AI article
Your Agent's Free-Text Output Is an API You Never Designed
Community description: Parsing a recommendation out of an LLM's prose is a fragile interface. Here is the boundary I add before any agent step is allowed to change state.
Dev.to | Sep 25, 2026 | ruixuan jiang
Automated excerpt
There is no error when the shape is wrong, only a wrong branch. It is that the schema is checked before anything changes. if (typeof value ! == "object" || value === null) { if (typeof d. status ! == "string" || ! ALLOWED. has(d. status)) { confidence: d. confidence === "high" || d. confidence === "medium" ? d. confidence : "low", A thrown error is a feature here. Can an invalid decision be rejected before any action runs?
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