updated readme with free tier

Author: shahar-brd

README.md

@@ -33,8 +33,8 @@
 
   <div>
     <h3>🎉 <strong>Free Tier Available!</strong> 🎉</h3>
-    <p><strong>5,000 requests/month FREE</strong> <br/>
-    <sub>Perfect for prototyping and everyday AI workflows</sub></p>
+    <p><strong>5,000 credits/month FREE</strong> <br/>
+    <sub>No credit card required · Auto-renews monthly · Perfect for prototyping and everyday AI workflows</sub></p>
   </div>
 </div>
 
@@ -90,7 +90,7 @@ Built by [Bright Data](https://brightdata.com), the world's #1 web data platform
     <tr>
       <td align="center">✅ <strong>Works with Any LLM</strong><br/><sub>Claude, GPT, Gemini, Llama</sub></td>
       <td align="center">🛡️ <strong>Never Gets Blocked</strong><br/><sub>Enterprise-grade unblocking</sub></td>
-      <td align="center">🚀 <strong>5,000 Free Requests</strong><br/><sub>Monthly</sub></td>
+      <td align="center">🚀 <strong>5,000 Free Credits</strong><br/><sub>Monthly · No card needed</sub></td>
       <td align="center">⚡ <strong>Zero Config</strong><br/><sub>Works out of the box</sub></td>
     </tr>
   </table>
@@ -164,7 +164,7 @@ https://mcp.brightdata.com/mcp?token=YOUR_API_TOKEN_HERE
     <tr>
       <td align="center">
         <h3>$0/month</h3>
-        <p><strong>5,000 requests</strong></p>
+        <p><strong>5,000 credits</strong></p>
         <hr/>
         <p>✅ Web Search<br/>
         ✅ Scraping with Web unlocker<br/>
@@ -200,8 +200,14 @@ https://mcp.brightdata.com/mcp?token=YOUR_API_TOKEN_HERE
   </table>
 </div>
 
-> **💡 Note:** Pro mode is **not included** in the free tier and incurs
-> additional charges based on usage.
+> **💡 How the free tier works:** Your account gets **5,000 credits/month**
+> (~$7.50 value), auto-renewed on the 1st with **no credit card required**.
+> MCP requests draw from this shared pool — base tools (`search_engine`,
+> `scrape_as_markdown`, `discover`) cost **1 credit per request**, while
+> `web_data_*` tools cost **1 credit per record returned**. Unused credits
+> **don't roll over**, and when they run out requests stop (no surprise
+> charges unless you've deposited funds). Pro mode is **not included** in the
+> free tier and incurs additional charges based on usage.
 
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