diff --git a/docs/docs/getting-started/guide-chat.mdx b/docs/docs/getting-started/guide-chat.mdx
index 1acd97a81389..cdefe0697add 100644
--- a/docs/docs/getting-started/guide-chat.mdx
+++ b/docs/docs/getting-started/guide-chat.mdx
@@ -278,7 +278,13 @@ And finally, we can use the AgentExecutor to run an agent:
 
 ```typescript
 // Define the list of tools the agent can use
-const tools = [new SerpAPI()];
+const tools = [
+  new SerpAPI(process.env.SERPAPI_API_KEY, {
+    location: "Austin,Texas,United States",
+    hl: "en",
+    gl: "us",
+  }),
+];
 // Create the agent from the chat model and the tools
 const agent = ChatAgent.fromLLMAndTools(new ChatOpenAI(), tools);
 // Create an executor, which calls to the agent until an answer is found
diff --git a/docs/docs/getting-started/guide-llm.mdx b/docs/docs/getting-started/guide-llm.mdx
index 436e17ac4ed0..04476c4ac825 100644
--- a/docs/docs/getting-started/guide-llm.mdx
+++ b/docs/docs/getting-started/guide-llm.mdx
@@ -171,7 +171,14 @@ import { SerpAPI } from "langchain/tools";
 import { Calculator } from "langchain/tools/calculator";
 
 const model = new OpenAI({ temperature: 0 });
-const tools = [new SerpAPI(), new Calculator()];
+const tools = [
+  new SerpAPI(process.env.SERPAPI_API_KEY, {
+    location: "Austin,Texas,United States",
+    hl: "en",
+    gl: "us",
+  }),
+  new Calculator(),
+];
 
 const executor = await initializeAgentExecutor(
   tools,
diff --git a/docs/docs/modules/agents/executor/getting-started.md b/docs/docs/modules/agents/executor/getting-started.md
index a23eacf66298..f84af780928c 100644
--- a/docs/docs/modules/agents/executor/getting-started.md
+++ b/docs/docs/modules/agents/executor/getting-started.md
@@ -30,7 +30,14 @@ import { SerpAPI } from "langchain/tools";
 import { Calculator } from "langchain/tools/calculator";
 
 const model = new OpenAI({ temperature: 0 });
-const tools = [new SerpAPI(), new Calculator()];
+const tools = [
+  new SerpAPI(process.env.SERPAPI_API_KEY, {
+    location: "Austin,Texas,United States",
+    hl: "en",
+    gl: "us",
+  }),
+  new Calculator(),
+];
 
 const executor = await initializeAgentExecutor(
   tools,
diff --git a/docs/docs/modules/agents/tools/agents_with_vectorstores.md b/docs/docs/modules/agents/tools/agents_with_vectorstores.md
index 473b59d365fc..946d27c353d4 100644
--- a/docs/docs/modules/agents/tools/agents_with_vectorstores.md
+++ b/docs/docs/modules/agents/tools/agents_with_vectorstores.md
@@ -47,7 +47,15 @@ const qaTool = new ChainTool({
 Now you can construct and using the tool just as you would any other!
 
 ```typescript
-const tools = [new SerpAPI(), new Calculator(), qaTool];
+const tools = [
+  new SerpAPI(process.env.SERPAPI_API_KEY, {
+    location: "Austin,Texas,United States",
+    hl: "en",
+    gl: "us",
+  }),
+  new Calculator(),
+  qaTool,
+];
 
 const executor = await initializeAgentExecutor(
   tools,
diff --git a/docs/docs/production/tracing.md b/docs/docs/production/tracing.md
index b1216c19f72e..14b126fb3d14 100644
--- a/docs/docs/production/tracing.md
+++ b/docs/docs/production/tracing.md
@@ -18,7 +18,14 @@ import process from "process";
 export const run = async () => {
   process.env.LANGCHAIN_HANDLER = "langchain";
   const model = new OpenAI({ temperature: 0 });
-  const tools = [new SerpAPI(), new Calculator()];
+  const tools = [
+    new SerpAPI(process.env.SERPAPI_API_KEY, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+    new Calculator(),
+  ];
 
   const executor = await initializeAgentExecutor(
     tools,
@@ -55,7 +62,14 @@ import {
 export const run = async () => {
   process.env.LANGCHAIN_HANDLER = "langchain";
   const model = new OpenAI({ temperature: 0 });
-  const tools = [new SerpAPI(), new Calculator()];
+  const tools = [
+    new SerpAPI(process.env.SERPAPI_API_KEY, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+    new Calculator(),
+  ];
 
   const executor = await initializeAgentExecutor(
     tools,
@@ -90,7 +104,14 @@ export const run = async () => {
     callbackManager.addHandler(new LangChainTracer());
 
     const model = new OpenAI({ temperature: 0, callbackManager });
-    const tools = [new SerpAPI(), new Calculator()];
+    const tools = [
+      new SerpAPI(process.env.SERPAPI_API_KEY, {
+        location: "Austin,Texas,United States",
+        hl: "en",
+        gl: "us",
+      }),
+      new Calculator(),
+    ];
     for (const tool of tools) {
       tool.callbackManager = callbackManager;
     }
diff --git a/examples/src/agents/chat_convo_with_tracing.ts b/examples/src/agents/chat_convo_with_tracing.ts
index 3feee3e566a0..c449e9711a51 100644
--- a/examples/src/agents/chat_convo_with_tracing.ts
+++ b/examples/src/agents/chat_convo_with_tracing.ts
@@ -7,7 +7,14 @@ import { BufferMemory } from "langchain/memory";
 export const run = async () => {
   process.env.LANGCHAIN_HANDLER = "langchain";
   const model = new ChatOpenAI({ temperature: 0 });
-  const tools = [new SerpAPI(), new Calculator()];
+  const tools = [
+    new SerpAPI(process.env.SERPAPI_API_KEY, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+    new Calculator(),
+  ];
 
   const executor = await initializeAgentExecutor(
     tools,
diff --git a/examples/src/agents/chat_mrkl.ts b/examples/src/agents/chat_mrkl.ts
index 6ac91adcb130..7c74a0ff0d14 100644
--- a/examples/src/agents/chat_mrkl.ts
+++ b/examples/src/agents/chat_mrkl.ts
@@ -5,7 +5,14 @@ import { Calculator } from "langchain/tools/calculator";
 
 export const run = async () => {
   const model = new ChatOpenAI({ temperature: 0 });
-  const tools = [new SerpAPI(), new Calculator()];
+  const tools = [
+    new SerpAPI(process.env.SERPAPI_API_KEY, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+    new Calculator(),
+  ];
 
   const executor = await initializeAgentExecutor(
     tools,
diff --git a/examples/src/agents/chat_mrkl_with_tracing.ts b/examples/src/agents/chat_mrkl_with_tracing.ts
index 52639b2716f8..925302b0053c 100644
--- a/examples/src/agents/chat_mrkl_with_tracing.ts
+++ b/examples/src/agents/chat_mrkl_with_tracing.ts
@@ -6,7 +6,14 @@ import { Calculator } from "langchain/tools/calculator";
 export const run = async () => {
   process.env.LANGCHAIN_HANDLER = "langchain";
   const model = new ChatOpenAI({ temperature: 0 });
-  const tools = [new SerpAPI(), new Calculator()];
+  const tools = [
+    new SerpAPI(process.env.SERPAPI_API_KEY, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+    new Calculator(),
+  ];
 
   const executor = await initializeAgentExecutor(
     tools,
diff --git a/examples/src/agents/concurrent_mrkl.ts b/examples/src/agents/concurrent_mrkl.ts
index 99e2f278654b..506ed3433937 100644
--- a/examples/src/agents/concurrent_mrkl.ts
+++ b/examples/src/agents/concurrent_mrkl.ts
@@ -12,7 +12,14 @@ import {
 export const run = async () => {
   process.env.LANGCHAIN_HANDLER = "langchain";
   const model = new OpenAI({ temperature: 0 });
-  const tools = [new SerpAPI(), new Calculator()];
+  const tools = [
+    new SerpAPI(process.env.SERPAPI_API_KEY, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+    new Calculator(),
+  ];
 
   const executor = await initializeAgentExecutor(
     tools,
@@ -47,7 +54,14 @@ export const run = async () => {
     callbackManager.addHandler(new LangChainTracer());
 
     const model = new OpenAI({ temperature: 0, callbackManager });
-    const tools = [new SerpAPI(), new Calculator()];
+    const tools = [
+      new SerpAPI(process.env.SERPAPI_API_KEY, {
+        location: "Austin,Texas,United States",
+        hl: "en",
+        gl: "us",
+      }),
+      new Calculator(),
+    ];
     for (const tool of tools) {
       tool.callbackManager = callbackManager;
     }
diff --git a/examples/src/agents/custom_agent.ts b/examples/src/agents/custom_agent.ts
index f24441fc21c9..034717de06ed 100644
--- a/examples/src/agents/custom_agent.ts
+++ b/examples/src/agents/custom_agent.ts
@@ -6,7 +6,14 @@ import { LLMChain } from "langchain/chains";
 
 export const run = async () => {
   const model = new OpenAI({ temperature: 0 });
-  const tools = [new SerpAPI(), new Calculator()];
+  const tools = [
+    new SerpAPI(process.env.SERPAPI_API_KEY, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+    new Calculator(),
+  ];
 
   const prefix = `Answer the following questions as best you can, but speaking as a pirate might speak. You have access to the following tools:`;
   const suffix = `Begin! Remember to speak as a pirate when giving your final answer. Use lots of "Args"
diff --git a/examples/src/agents/custom_llm_agent.ts b/examples/src/agents/custom_llm_agent.ts
index fff3ac53019b..6694d42af302 100644
--- a/examples/src/agents/custom_llm_agent.ts
+++ b/examples/src/agents/custom_llm_agent.ts
@@ -107,7 +107,14 @@ class CustomOutputParser extends AgentActionOutputParser {
 
 export const run = async () => {
   const model = new OpenAI({ temperature: 0 });
-  const tools = [new SerpAPI(), new Calculator()];
+  const tools = [
+    new SerpAPI(process.env.SERPAPI_API_KEY, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+    new Calculator(),
+  ];
 
   const llmChain = new LLMChain({
     prompt: new CustomPromptTemplate({
diff --git a/examples/src/agents/custom_llm_agent_chat.ts b/examples/src/agents/custom_llm_agent_chat.ts
index 62818a9c9edd..af602846b546 100644
--- a/examples/src/agents/custom_llm_agent_chat.ts
+++ b/examples/src/agents/custom_llm_agent_chat.ts
@@ -110,7 +110,14 @@ class CustomOutputParser extends AgentActionOutputParser {
 
 export const run = async () => {
   const model = new ChatOpenAI({ temperature: 0 });
-  const tools = [new SerpAPI(), new Calculator()];
+  const tools = [
+    new SerpAPI(process.env.SERPAPI_API_KEY, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+    new Calculator(),
+  ];
 
   const llmChain = new LLMChain({
     prompt: new CustomPromptTemplate({
diff --git a/examples/src/agents/load_from_hub.ts b/examples/src/agents/load_from_hub.ts
index 57cb275a0db6..31d90d586969 100644
--- a/examples/src/agents/load_from_hub.ts
+++ b/examples/src/agents/load_from_hub.ts
@@ -6,7 +6,14 @@ import { Calculator } from "langchain/tools/calculator";
 
 export const run = async () => {
   const model = new OpenAI({ temperature: 0 });
-  const tools = [new SerpAPI(), new Calculator()];
+  const tools = [
+    new SerpAPI(process.env.SERPAPI_API_KEY, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+    new Calculator(),
+  ];
 
   const agent = await loadAgent(
     "lc://agents/zero-shot-react-description/agent.json",
diff --git a/examples/src/agents/mrkl.ts b/examples/src/agents/mrkl.ts
index 03c1a433db77..22f3f2a920fd 100644
--- a/examples/src/agents/mrkl.ts
+++ b/examples/src/agents/mrkl.ts
@@ -5,7 +5,14 @@ import { Calculator } from "langchain/tools/calculator";
 
 export const run = async () => {
   const model = new OpenAI({ temperature: 0 });
-  const tools = [new SerpAPI(), new Calculator()];
+  const tools = [
+    new SerpAPI(process.env.SERPAPI_API_KEY, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+    new Calculator(),
+  ];
 
   const executor = await initializeAgentExecutor(
     tools,
diff --git a/examples/src/agents/mrkl_with_tracing.ts b/examples/src/agents/mrkl_with_tracing.ts
index 9d538b6f0cda..cfae736d43bd 100644
--- a/examples/src/agents/mrkl_with_tracing.ts
+++ b/examples/src/agents/mrkl_with_tracing.ts
@@ -7,7 +7,14 @@ import process from "process";
 export const run = async () => {
   process.env.LANGCHAIN_HANDLER = "langchain";
   const model = new OpenAI({ temperature: 0 });
-  const tools = [new SerpAPI(), new Calculator()];
+  const tools = [
+    new SerpAPI(process.env.SERPAPI_API_KEY, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+    new Calculator(),
+  ];
 
   const executor = await initializeAgentExecutor(
     tools,
diff --git a/examples/src/chat/agent.ts b/examples/src/chat/agent.ts
index 97322bf6db0f..49ff100f2cef 100644
--- a/examples/src/chat/agent.ts
+++ b/examples/src/chat/agent.ts
@@ -9,7 +9,13 @@ import {
 } from "langchain/prompts";
 
 export const run = async () => {
-  const tools = [new SerpAPI()];
+  const tools = [
+    new SerpAPI(process.env.SERPAPI_API_KEY, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+  ];
 
   const prompt = ZeroShotAgent.createPrompt(tools, {
     prefix: `Answer the following questions as best you can, but speaking as a pirate might speak. You have access to the following tools:`,
diff --git a/examples/src/chat/overview.ts b/examples/src/chat/overview.ts
index 36f382ab5702..f403371ca23f 100644
--- a/examples/src/chat/overview.ts
+++ b/examples/src/chat/overview.ts
@@ -125,7 +125,13 @@ export const run = async () => {
   // other abilities, such as search, or a calculator
 
   // Define the list of tools the agent can use
-  const tools = [new SerpAPI()];
+  const tools = [
+    new SerpAPI(process.env.SERPAPI_API_KEY, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+  ];
   // Create the agent from the chat model and the tools
   const agent = ChatAgent.fromLLMAndTools(new ChatOpenAI(), tools);
   // Create an executor, which calls to the agent until an answer is found
diff --git a/langchain/src/agents/tests/agent.int.test.ts b/langchain/src/agents/tests/agent.int.test.ts
index 27f2a9e1cc3b..a415edcf3f6a 100644
--- a/langchain/src/agents/tests/agent.int.test.ts
+++ b/langchain/src/agents/tests/agent.int.test.ts
@@ -8,7 +8,14 @@ import { initializeAgentExecutor } from "../initialize.js";
 
 test("Run agent from hub", async () => {
   const model = new OpenAI({ temperature: 0, modelName: "text-babbage-001" });
-  const tools: Tool[] = [new SerpAPI(), new Calculator()];
+  const tools: Tool[] = [
+    new SerpAPI(undefined, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+    new Calculator(),
+  ];
   const agent = await loadAgent(
     "lc://agents/zero-shot-react-description/agent.json",
     { llm: model, tools }
@@ -27,7 +34,14 @@ test("Run agent from hub", async () => {
 
 test("Run agent locally", async () => {
   const model = new OpenAI({ temperature: 0, modelName: "text-babbage-001" });
-  const tools = [new SerpAPI(), new Calculator()];
+  const tools = [
+    new SerpAPI(undefined, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+    new Calculator(),
+  ];
 
   const executor = await initializeAgentExecutor(
     tools,
diff --git a/langchain/src/callbacks/tests/langchain_tracer.int.test.ts b/langchain/src/callbacks/tests/langchain_tracer.int.test.ts
index 5175e21c0655..c88fbdb3ef4d 100644
--- a/langchain/src/callbacks/tests/langchain_tracer.int.test.ts
+++ b/langchain/src/callbacks/tests/langchain_tracer.int.test.ts
@@ -27,7 +27,14 @@ test("Test LangChain tracer", async () => {
 test.skip("Test Traced Agent with concurrency (skipped until we fix concurrency)", async () => {
   process.env.LANGCHAIN_HANDLER = "langchain";
   const model = new OpenAI({ temperature: 0 });
-  const tools = [new SerpAPI(), new Calculator()];
+  const tools = [
+    new SerpAPI(undefined, {
+      location: "Austin,Texas,United States",
+      hl: "en",
+      gl: "us",
+    }),
+    new Calculator(),
+  ];
 
   const executor = await initializeAgentExecutor(
     tools,
diff --git a/langchain/src/tools/serpapi.ts b/langchain/src/tools/serpapi.ts
index 56a33a80b841..555d82318f2e 100644
--- a/langchain/src/tools/serpapi.ts
+++ b/langchain/src/tools/serpapi.ts
@@ -5,6 +5,9 @@ import { Tool } from "./base.js";
  * when used in `jest` tests. Part of the issue seems to be that the `serpapi`
  * package imports a wasm module to use instead of native `fetch`, which we
  * don't want anyway.
+ *
+ * NOTE: you must provide location, gl and hl or your region and language will
+ * may not match your location, and will not be deterministic.
  */
 
 // Copied over from `serpapi` package
@@ -45,7 +48,7 @@ interface GoogleParameters extends BaseParameters {
    * Location
    * Parameter defines from where you want the search to originate. If several
    * locations match the location requested, we'll pick the most popular one. Head to
-   * the [/locations.json API](https://serpapi.com/locations-api) if you need more
+   * [/locations.json API](https://serpapi.com/locations-api) if you need more
    * precise control. location and uule parameters can't be used together. Avoid
    * utilizing location when setting the location outside the U.S. when using Google
    * Shopping and/or Google Product API.