diff --git a/packages/nibijs/docs/classes/StableSwap.md b/packages/nibijs/docs/classes/StableSwap.md
index 6b526a38..a8ae01e9 100644
--- a/packages/nibijs/docs/classes/StableSwap.md
+++ b/packages/nibijs/docs/classes/StableSwap.md
@@ -178,7 +178,7 @@ y()
 Calculate x[j] if one makes x[i] = x
 
 Done by solving quadratic equation iteratively.
-x*1**2 + x1 * (sum' - (A*n**n - 1) * D / (A _ n**n)) = D ** (n+1)/(n \*\* (2 _ n) \_ prod' \* A)
+x*1\*\*2 + x1 * (sum' - (A*n\*\*n - 1) * D / (A _ n**n)) = D ** (n+1)/(n \*\* (2 _ n) \_ prod' \* A)
 x_1\*\*2 + b\*x_1 = c
 
 x_1 = (x_1\**2 + c) / (2*x_1 + b)
diff --git a/packages/nibijs/src/chain/chain.ts b/packages/nibijs/src/chain/chain.ts
index bed27c2d..6e063ecf 100644
--- a/packages/nibijs/src/chain/chain.ts
+++ b/packages/nibijs/src/chain/chain.ts
@@ -71,6 +71,16 @@ export class CustomChain implements Chain {
     this.endptGrpc = `grpc.${chainIdParts.shortName}-${chainIdParts.number}.nibiru.fi`
   }
 
+  public static fromChainId(chainId: string): Chain {
+    const parts = chainId.split("-")
+    const chainIdParts = {
+      prefix: parts[0],
+      shortName: parts[1],
+      number: Number(parts[2]),
+    } as ChainIdParts
+    return new CustomChain(chainIdParts)
+  }
+
   private initChainId = () => {
     const { prefix, shortName, number } = this.chainIdParts
     return [prefix, shortName, number].join("-")
diff --git a/packages/nibijs/src/test/chain.test.ts b/packages/nibijs/src/test/chain.test.ts
index 7257a14b..400019e5 100644
--- a/packages/nibijs/src/test/chain.test.ts
+++ b/packages/nibijs/src/test/chain.test.ts
@@ -4,6 +4,7 @@ import {
   Chain,
   Coin,
   CoinMap,
+  CustomChain,
   isRestEndptLive,
   newCoin,
   newCoinMapFromCoins,
@@ -18,6 +19,12 @@ describe("chain connections", () => {
     expect(blockHeight).toBeDefined()
     expect(blockHeight).toBeGreaterThanOrEqual(0)
   })
+
+  test("chain from chain-id", async () => {
+    const chain = CustomChain.fromChainId(TEST_CHAIN.chainId)
+    expect(chain.chainId).toEqual(TEST_CHAIN.chainId)
+  })
+
   test("inactive chain validation cases", async () => {
     const inactiveChain: Chain = {
       endptTm: "",