Zod Examples You Can Edit and Run

5 small Zod examples written by AgentGid from the official docs, one feature each. Every one runs in your browser: change the code and see the result at once, or describe a change and let AI rewrite it. The screenshots are taken from the same code by our server, which also checks that each example starts without errors.

Zod: usage and stats 1,553 AI-built projects use it

Handling errors with ZodError in Zod: screenshot of the example running

Handling errors with ZodError in ZodChange the invalid object so only one field is wrong and watch the issue list shrink.

String formats in Zod: email, UUID, phone, datetime: screenshot of the example running

String formats in Zod: email, UUID, phone, datetimeEach line prints the format name, the value and whether it passed.

String validation in Zod: screenshot of the example running

String validation in ZodTry inputs like "ab" or "has space" to see which rule reports an issue.

Type coercion in Zod: screenshot of the example running

Type coercion in ZodThe boolean lines print what z.coerce.boolean() returns for each value, including the string "false".

Literal values in Zod: screenshot of the example running

Literal values in ZodAdd "yellow" to the literal array and run again to see it pass.

Try them all in one place

import * as z from "zod";

const Player = z.object({
  username: z.string(),
  xp: z.number(),
});

// valid input: parse returns the value
const ok = Player.parse({ username: "billie", xp: 100 });
console.log("parsed:", JSON.stringify(ok));

// invalid input: parse throws
try {
  Player.parse({ username: 42, xp: "100" });
  console.log("no error thrown");
} catch (err) {
  if (err instanceof z.ZodError) {
    console.log("ZodError with", err.issues.length, "issues:");
    for (const issue of err.issues) {
      console.log("  path:", issue.path.join("."));
      console.log("  code:", issue.code);
      console.log("  message:", issue.message);
    }
  } else {
    console.log("other error:", String(err));
  }
}

Ctrl/⌘ + Enter runs

Change the invalid object so only one field is wrong and watch the issue list shrink. Code written by AgentGid [1]. How it works, with a screenshot →

Checked Oct 12, 2026: each example starts without errors in Chromium with zod 4.6.6. Needs WebGL.

Sources

Explanations written by AgentGid from the official docs; the numbers in brackets point here. The code marked "written by AgentGid" is ours and free to copy.

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