diff --git a/.changeset/many-phones-study.md b/.changeset/many-phones-study.md
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+---
+"@latticexyz/protocol-parser": minor
+---
+
+feat: add `encodeKeyTuple`, a util to encode key tuples in Typescript (equivalent to key tuple encoding in Solidity and inverse of `decodeKeyTuple`).
+Example:
+
+```ts
+encodeKeyTuple({ staticFields: ["uint256", "int32", "bytes16", "address", "bool", "int8"], dynamicFields: [] }, [
+  42n,
+  -42,
+  "0x12340000000000000000000000000000",
+  "0xFFfFfFffFFfffFFfFFfFFFFFffFFFffffFfFFFfF",
+  true,
+  3,
+]);
+// [
+//  "0x000000000000000000000000000000000000000000000000000000000000002a",
+//  "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffd6",
+//  "0x1234000000000000000000000000000000000000000000000000000000000000",
+//  "0x000000000000000000000000ffffffffffffffffffffffffffffffffffffffff",
+//  "0x0000000000000000000000000000000000000000000000000000000000000001",
+//  "0x0000000000000000000000000000000000000000000000000000000000000003",
+// ]
+```