Merge pull request #912 from onur-saf/main

MAX_TWEET_LENGTH env implementation

Author: jkbrooks

packages/client-twitter/src/environment.ts

@@ -1,6 +1,8 @@
 import { IAgentRuntime } from "@ai16z/eliza";
 import { z } from "zod";
 
+const DEFAULT_MAX_TWEET_LENGTH = 280;
+
 export const twitterEnvSchema = z.object({
     TWITTER_DRY_RUN: z
         .string()
@@ -9,6 +11,10 @@ export const twitterEnvSchema = z.object({
     TWITTER_PASSWORD: z.string().min(1, "Twitter password is required"),
     TWITTER_EMAIL: z.string().email("Valid Twitter email is required"),
     TWITTER_COOKIES: z.string().optional(),
+    MAX_TWEET_LENGTH: z
+        .string()
+        .pipe(z.coerce.number().min(0).int())
+        .default(DEFAULT_MAX_TWEET_LENGTH.toString()),
 });
 
 export type TwitterConfig = z.infer<typeof twitterEnvSchema>;
@@ -34,6 +40,10 @@ export async function validateTwitterConfig(
             TWITTER_COOKIES:
                 runtime.getSetting("TWITTER_COOKIES") ||
                 process.env.TWITTER_COOKIES,
+            MAX_TWEET_LENGTH:
+                runtime.getSetting("MAX_TWEET_LENGTH") ||
+                process.env.MAX_TWEET_LENGTH ||
+                DEFAULT_MAX_TWEET_LENGTH.toString(),
         };
 
         return twitterEnvSchema.parse(config);

packages/client-twitter/src/post.ts

@@ -28,22 +28,23 @@ const twitterPostTemplate = `
 
 # Task: Generate a post in the voice and style and perspective of {{agentName}} @{{twitterUserName}}.
 Write a 1-3 sentence post that is {{adjective}} about {{topic}} (without mentioning {{topic}} directly), from the perspective of {{agentName}}. Do not add commentary or acknowledge this request, just write the post.
-Your response should not contain any questions. Brief, concise statements only. The total character count MUST be less than 280. No emojis. Use \\n\\n (double spaces) between statements.`;
-
-const MAX_TWEET_LENGTH = 280;
+Your response should not contain any questions. Brief, concise statements only. The total character count MUST be less than {{maxTweetLength}}. No emojis. Use \\n\\n (double spaces) between statements.`;
 
 /**
  * Truncate text to fit within the Twitter character limit, ensuring it ends at a complete sentence.
  */
-function truncateToCompleteSentence(text: string): string {
-    if (text.length <= MAX_TWEET_LENGTH) {
+function truncateToCompleteSentence(
+    text: string,
+    maxTweetLength: number
+): string {
+    if (text.length <= maxTweetLength) {
         return text;
     }
 
     // Attempt to truncate at the last period within the limit
     const truncatedAtPeriod = text.slice(
         0,
-        text.lastIndexOf(".", MAX_TWEET_LENGTH) + 1
+        text.lastIndexOf(".", maxTweetLength) + 1
     );
     if (truncatedAtPeriod.trim().length > 0) {
         return truncatedAtPeriod.trim();
@@ -52,14 +53,14 @@ function truncateToCompleteSentence(text: string): string {
     // If no period is found, truncate to the nearest whitespace
     const truncatedAtSpace = text.slice(
         0,
-        text.lastIndexOf(" ", MAX_TWEET_LENGTH)
+        text.lastIndexOf(" ", maxTweetLength)
     );
     if (truncatedAtSpace.trim().length > 0) {
         return truncatedAtSpace.trim() + "...";
     }
 
     // Fallback: Hard truncate and add ellipsis
-    return text.slice(0, MAX_TWEET_LENGTH - 3).trim() + "...";
+    return text.slice(0, maxTweetLength - 3).trim() + "...";
 }
 
 export class TwitterPostClient {
@@ -147,6 +148,7 @@ export class TwitterPostClient {
                 },
                 {
                     twitterUserName: this.client.profile.username,
+                    maxTweetLength: this.runtime.getSetting("MAX_TWEET_LENGTH"),
                 }
             );
 
@@ -171,7 +173,10 @@ export class TwitterPostClient {
                 .trim();
 
             // Use the helper function to truncate to complete sentence
-            const content = truncateToCompleteSentence(formattedTweet);
+            const content = truncateToCompleteSentence(
+                formattedTweet,
+                Number(this.runtime.getSetting("MAX_TWEET_LENGTH"))
+            );
 
             if (this.runtime.getSetting("TWITTER_DRY_RUN") === "true") {
                 elizaLogger.info(