diff --git a/simulations/20240812 Stacks Inspector CityCoins Proposal and Stacking Simulation.pdf b/simulations/20240812 Stacks Inspector CityCoins Proposal and Stacking Simulation.pdf
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Binary files /dev/null and b/simulations/20240812 Stacks Inspector CityCoins Proposal and Stacking Simulation.pdf differ
diff --git a/simulations/stxer-ccip019-execution.ts b/simulations/stxer-ccip019-execution.ts
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+++ b/simulations/stxer-ccip019-execution.ts
@@ -0,0 +1,85 @@
+import { StacksMainnet } from "@stacks/network";
+import { AnchorMode, PostConditionMode, SignedTokenTransferOptions, StacksTransaction, boolCV, bufferCV, contractPrincipalCV, listCV, makeSTXTokenTransfer, makeUnsignedContractCall, makeUnsignedContractDeploy, makeUnsignedSTXTokenTransfer, principalCV, serializeCV, stringAsciiCV, tupleCV, uintCV } from "@stacks/transactions";
+import { c32addressDecode } from "c32check";
+import fs from "fs";
+
+// current beta api endpoint
+const SIMULATION_API_ENDPOINT = "https://api.stxer.xyz/simulations";
+
+function runTx(tx: StacksTransaction) {
+  // type 0: run transaction
+  return tupleCV({ type: uintCV(0), data: bufferCV(tx.serialize()) });
+}
+
+const common_params = {
+  network: new StacksMainnet(),
+  publicKey: "",
+  postConditionMode: PostConditionMode.Allow,
+  anchorMode: AnchorMode.Any,
+  fee: 100,
+};
+
+function runEval(address: string, contractName: string, code: string) {
+  // type 1: eval arbitrary code inside a contract
+  return tupleCV({
+    type: uintCV(1),
+    data: bufferCV(
+      serializeCV(
+        tupleCV({
+          contract: contractPrincipalCV(address, contractName),
+          code: stringAsciiCV(code),
+        })
+      )
+    ),
+  });
+}
+
+async function directExecute(address: string, nonce: number) {
+  const [, addressHash] = c32addressDecode(address);
+  const directExecuteTx = await makeUnsignedContractCall({
+    contractAddress: "SP8A9HZ3PKST0S42VM9523Z9NV42SZ026V4K39WH",
+    contractName: "ccd001-direct-execute",
+    functionName: "direct-execute",
+    functionArgs: [principalCV("SP8A9HZ3PKST0S42VM9523Z9NV42SZ026V4K39WH.ccip019-pox-4-stacking")],
+    nonce: nonce++,
+    ...common_params,
+  });
+  directExecuteTx.auth.spendingCondition.signer = addressHash;
+  return directExecuteTx;
+}
+
+async function main() {
+  // set current block height and hash
+  const block_height = 161649;
+  const block_hash = "654a1b5a9f3a8345b62d8cf854e57a742c84c7330991b86f4585949ca6fa2033";
+
+  // execute the proposal with 3rd tx
+  const executeTx = await directExecute("SP7DGES13508FHRWS1FB0J3SZA326FP6QRMB6JDE", 122);
+
+  // lock stx to the pool
+  const address = "SPN4Y5QPGQA8882ZXW90ADC2DHYXMSTN8VAR8C3X";
+  const [, addressHash] = c32addressDecode(address);
+  const lockStxTx = await makeUnsignedContractCall({
+    contractAddress: "SP21YTSM60CAY6D011EZVEVNKXVW8FVZE198XEFFP",
+    contractName: "pox4-fast-pool-v3",
+    functionName: "delegate-stack-stx-many",
+    functionArgs: [listCV([principalCV("SP8A9HZ3PKST0S42VM9523Z9NV42SZ026V4K39WH.ccd002-treasury-mia-mining-v3"), principalCV("SP8A9HZ3PKST0S42VM9523Z9NV42SZ026V4K39WH.ccd002-treasury-mia-rewards-v3")])],
+    nonce: 816, // matches Hiro Explorer
+    ...common_params,
+  });
+  lockStxTx.auth.spendingCondition.signer = addressHash;
+
+  const req = tupleCV({
+    block_height: uintCV(block_height),
+    block_hash: bufferCV(Buffer.from(block_hash, "hex")),
+    steps: listCV([executeTx, lockStxTx].map((t) => runTx(t))),
+  });
+  const body = serializeCV(req);
+  const rs: any = await fetch(SIMULATION_API_ENDPOINT, {
+    method: "POST",
+    body,
+  }).then((rs) => rs.json());
+  console.log("Simulation will be available at: https://stxer.xyz/simulations/" + rs.id);
+}
+
+main().catch(console.error);