feat: add exact_match parameter to tavily_search tool

- Add exact_match boolean parameter to tavily_search inputSchema
- Pass exact_match through tool handler to search method
- Include exact_match in search API request payload
- Update README with exact_match usage example
- Bump version to 0.2.18

The exact_match parameter, when set to true, restricts results to those
containing the exact quoted phrase(s) in the query.

Refs: TAV-5096

README.md

@@ -190,6 +190,15 @@ You can set default parameter values for the `tavily-search` tool using the `DEF
 export DEFAULT_PARAMETERS='{"include_images": true}'
 ```
 
+### Exact Match Search
+
+Use the `exact_match` parameter to only return results containing the exact phrase(s) in quotes within your query:
+
+```js
+// Only return results containing the exact phrase "John Smith"
+tavily_search({ query: '"John Smith" CEO Acme Corp', exact_match: true })
+```
+
 ### Example usage from Client
 ```json
 {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "tavily-mcp",
-  "version": "0.2.17",
+  "version": "0.2.18",
   "mcpName": "io.github.tavily-ai/tavily-mcp",
   "description": "MCP server for advanced web search using Tavily",
   "repository": {

src/index.ts

@@ -73,7 +73,7 @@ class TavilyClient {
     this.server = new Server(
       {
         name: "tavily-mcp",
-        version: "0.2.10",
+        version: "0.2.18",
       },
       {
         capabilities: {
@@ -226,6 +226,10 @@ class TavilyClient {
                 type: "boolean",
                 description: "Whether to include the favicon URL for each result",
                 default: false
+              },
+              exact_match: {
+                type: "boolean",
+                description: "If true, only return results containing the exact phrase(s) in quotes within the query"
               }
             },
             required: ["query"]
@@ -453,7 +457,8 @@ class TavilyClient {
               country: args.country,
               include_favicon: args.include_favicon,
               start_date: args.start_date,
-              end_date: args.end_date
+              end_date: args.end_date,
+              exact_match: args.exact_match
             });
             break;
           
@@ -577,6 +582,7 @@ class TavilyClient {
         include_favicon: params.include_favicon,
         start_date: params.start_date,
         end_date: params.end_date,
+        exact_match: params.exact_match,
         api_key: API_KEY,
       };