Improve seller account filtering

src/main-loop.ts

@@ -254,29 +254,6 @@ export async function runMainLoop(app: AppContainer): Promise<void> {
             processedAt: Date.now(),
           });
 
-          // Skip OF/seller accounts before spending on AI.
-          if (
-            config.reddit.filterSellers &&
-            (config.reddit.sellerKeywords.length > 0 || config.reddit.sellerDomains.length > 0)
-          ) {
-            const isSeller = await redditApi.isSellerProfile(
-              post.author,
-              config.reddit.sellerKeywords,
-              config.reddit.sellerDomains
-            );
-            if (isSeller) {
-              logger.info(`Skipping u/${post.author} - seller/OnlyFans profile detected`);
-              webServer?.logActivity(
-                'skipped',
-                `Skipped post by u/${post.author} (seller/OnlyFans profile)`,
-                post.author,
-              );
-              webServer?.pushLog('info', `🚫 Skipped u/${post.author} - seller/OnlyFans profile`);
-              postsRepo.setError(post.id, 'Seller profile detected');
-              continue;
-            }
-          }
-
           // Refresh examples weighted toward this post's subreddit.
           const subredditExamples = responseChecker.getSuccessfulExamples(3, post.subreddit);
           processorService.setSuccessfulExamples(subredditExamples);

src/reddit/api.ts

@@ -48,6 +48,38 @@ export interface RedditPost {
   link_flair_text?: string | null;
 }
 
+interface RedditListingChild {
+  data?: {
+    title?: unknown;
+    selftext?: unknown;
+    body?: unknown;
+    url?: unknown;
+    subreddit?: unknown;
+  };
+}
+
+function joinText(values: unknown[]): string {
+  return values.filter((value): value is string => typeof value === 'string').join(' ');
+}
+
+/** Match configured seller signals in user-controlled text. */
+export function findSellerSignal(
+  text: string,
+  keywords: string[],
+  domains: string[],
+): { kind: 'keyword' | 'domain'; value: string } | null {
+  const normalized = text.toLocaleLowerCase();
+  for (const keyword of keywords) {
+    const candidate = keyword.trim().toLocaleLowerCase();
+    if (candidate && normalized.includes(candidate)) {
+      return { kind: 'keyword', value: keyword };
+    }
+  }
+
+  const domain = findSellerDomain(text, domains);
+  return domain ? { kind: 'domain', value: domain } : null;
+}
+
 // Extracts URL-ish tokens (with or without scheme) and returns the first
 // domain match. Matches `host` or any subdomain (`*.host`), case-insensitive.
 export function findSellerDomain(text: string, domains: string[]): string | null {
@@ -249,10 +281,28 @@ export class RedditApiClient {
   async isSellerProfile(
     username: string,
     sellerKeywords: string[],
-    sellerDomains: string[] = []
+    sellerDomains: string[] = [],
+    currentPost?: RedditPost,
   ): Promise<boolean> {
     if (sellerKeywords.length === 0 && sellerDomains.length === 0) return false;
 
+    // Check the post first. This catches direct promotional posts without an
+    // extra request and also covers accounts whose profile bio is deliberately
+    // vague.
+    if (currentPost) {
+      const postSignal = findSellerSignal(
+        joinText([currentPost.title, currentPost.selftext, currentPost.url]),
+        sellerKeywords,
+        sellerDomains,
+      );
+      if (postSignal) {
+        this.logger.info(
+          `u/${username} flagged as seller from current post (matched ${postSignal.kind}: "${postSignal.value}")`,
+        );
+        return true;
+      }
+    }
+
     try {
       const cookieHeader = await this.getCookieHeader();
       const headers: Record<string, string> = {};
@@ -260,51 +310,67 @@ export class RedditApiClient {
         headers['Cookie'] = cookieHeader;
       }
 
-      const response = await this.client.get(`/user/${username}/about.json`, {
+      const response = await this.client.get(`/user/${encodeURIComponent(username)}/about.json`, {
         params: { raw_json: 1 },
         headers,
       });
 
       const userData = response.data?.data;
-      if (!userData) return false;
-
-      // Combine all text fields to scan
-      const textToCheck = [
-        userData.subreddit?.public_description || '',
-        userData.subreddit?.title || '',
-        userData.subreddit?.display_name_prefixed || '',
-      ]
-        .join(' ')
-        .toLowerCase();
-
-      for (const keyword of sellerKeywords) {
-        if (textToCheck.includes(keyword.toLowerCase())) {
+      if (userData) {
+        const profileText = joinText([
+          userData.subreddit?.public_description || '',
+          userData.subreddit?.title || '',
+          userData.subreddit?.display_name_prefixed || '',
+        ]);
+        const profileSignal = findSellerSignal(profileText, sellerKeywords, sellerDomains);
+        if (profileSignal) {
           this.logger.info(
-            `u/${username} flagged as seller profile (matched keyword: "${keyword}")`
+            `u/${username} flagged as seller profile (matched ${profileSignal.kind}: "${profileSignal.value}")`,
           );
           return true;
         }
       }
-
-      if (sellerDomains.length > 0) {
-        const matchedDomain = findSellerDomain(textToCheck, sellerDomains);
-        if (matchedDomain) {
-          this.logger.info(
-            `u/${username} flagged as seller profile (matched domain: "${matchedDomain}")`
-          );
-          return true;
-        }
-      }
-
-      return false;
     } catch (error) {
       if (axios.isAxiosError(error) && error.response?.status === 404) {
         this.logger.warn(`User u/${username} profile not found`);
         return false;
       }
       this.logger.warn(`Failed to check profile for u/${username}:`, error);
-      return false; // Don't block on errors - let it through
     }
+
+    // Bios are often clean while recent posts advertise the paid account.
+    // Scan a small overview page, including comment bodies and subreddit
+    // names, before allowing the candidate through.
+    try {
+      const cookieHeader = await this.getCookieHeader();
+      const headers: Record<string, string> = {};
+      if (cookieHeader) headers.Cookie = cookieHeader;
+      const response = await this.client.get(`/user/${encodeURIComponent(username)}/overview.json`, {
+        params: { limit: 25, raw_json: 1 },
+        headers,
+      });
+      const children: RedditListingChild[] = Array.isArray(response.data?.data?.children)
+        ? response.data.data.children
+        : [];
+      const activityText = children.map(({ data }) => joinText([
+        data?.title,
+        data?.selftext,
+        data?.body,
+        data?.url,
+        data?.subreddit,
+      ])).join(' ');
+      const activitySignal = findSellerSignal(activityText, sellerKeywords, sellerDomains);
+      if (activitySignal) {
+        this.logger.info(
+          `u/${username} flagged as seller from recent activity (matched ${activitySignal.kind}: "${activitySignal.value}")`,
+        );
+        return true;
+      }
+    } catch (error) {
+      this.logger.warn(`Failed to check recent activity for u/${username}:`, error);
+    }
+
+    return false; // Fail open if Reddit profile endpoints are unavailable.
   }
 
   getPostUrl(post: RedditPost): string {

src/services/monitor.ts

@@ -48,6 +48,32 @@ export class MonitorService {
             continue;
           }
 
+          if (
+            this.config.reddit.filterSellers &&
+            (this.config.reddit.sellerKeywords.length > 0 || this.config.reddit.sellerDomains.length > 0)
+          ) {
+            const isSeller = await this.redditApi.isSellerProfile(
+              post.author,
+              this.config.reddit.sellerKeywords,
+              this.config.reddit.sellerDomains,
+              post,
+            );
+            if (isSeller) {
+              this.logger.info(`Skipping post ${post.id} from u/${post.author} - seller signals detected`);
+              this.postsRepo.insert({
+                id: post.id,
+                subreddit: post.subreddit,
+                author: post.author,
+                title: post.title,
+                postUrl: this.redditApi.getPostUrl(post),
+                imageUrl: subreddit.type === 'image' ? this.redditApi.getImageUrl(post) : null,
+                processedAt: Date.now(),
+              });
+              this.postsRepo.setError(post.id, 'Seller signals detected');
+              continue;
+            }
+          }
+
           // Chat subs almost always have a self-declared gender tag in the
           // title/body (e.g. [25F], M4F). Drop posts that don't match the
           // configured targetGenders here so they never enter the processor.

tests/monitor.test.ts

@@ -105,6 +105,31 @@ describe('MonitorService', () => {
     expect(messagesRepo.hasSentTo).toHaveBeenCalledWith('already_msgd');
   });
 
+  it('records seller posts as processed and continues to a clean candidate', async () => {
+    const sellerPost: RedditPost = {
+      id: 't3_seller', subreddit: 'sub1', author: 'seller', title: 'My page',
+      selftext: 'OnlyFans in bio', url: 'http://example.com/1.jpg', permalink: '/r/sub1/1', thumbnail: '',
+      is_self: false, created_utc: 2, over_18: true, spoiler: false,
+    };
+    const cleanPost: RedditPost = {
+      id: 't3_clean', subreddit: 'sub1', author: 'clean', title: 'Hello',
+      url: 'http://example.com/2.jpg', permalink: '/r/sub1/2', thumbnail: '',
+      is_self: false, created_utc: 1, over_18: true, spoiler: false,
+    };
+    const redditApi = createMockRedditApi([sellerPost, cleanPost]);
+    vi.mocked(redditApi.isSellerProfile).mockImplementation(async (username) => username === 'seller');
+    const postsRepo = createMockPostsRepo();
+    const config = getTestConfig({ reddit: { subreddits: [{ name: 'sub1', type: 'image' }] } });
+    monitor = new MonitorService(redditApi, postsRepo, createMockMessagesRepo(), config, logger, 0);
+
+    await expect(monitor.getUnprocessedPosts()).resolves.toEqual([cleanPost]);
+    expect(redditApi.isSellerProfile).toHaveBeenCalledWith(
+      'seller', config.reddit.sellerKeywords, config.reddit.sellerDomains, sellerPost,
+    );
+    expect(postsRepo.insert).toHaveBeenCalledWith(expect.objectContaining({ id: 't3_seller' }));
+    expect(postsRepo.setError).toHaveBeenCalledWith('t3_seller', 'Seller signals detected');
+  });
+
   it('returns newest post when multiple valid posts exist', async () => {
     const post1: RedditPost = {
       id: 't3_1', subreddit: 'sub1', author: 'user1', title: 'Older',

tests/reddit-api.test.ts

@@ -242,6 +242,38 @@ describe('RedditApiClient', () => {
   });
 
   describe('isSellerProfile', () => {
+    it('returns true for a seller signal in the current post without fetching the profile', async () => {
+      const get = vi.fn();
+      vi.mocked(axios.create).mockReturnValue({ get } as any);
+      const client2 = new RedditApiClient(getTestConfig(), logger);
+      const post = {
+        id: 'post-1', name: 't3_post-1', subreddit: 'test', author: 'testuser',
+        title: 'Come and subscribe', selftext: 'My page is at https://onlyfans.com/example',
+        url: 'https://reddit.com/post-1', permalink: '/r/test/post-1', thumbnail: '',
+        is_self: true, created_utc: 1, over_18: true, spoiler: false,
+      };
+
+      await expect(client2.isSellerProfile('testuser', ['onlyfans'], ['onlyfans.com'], post))
+        .resolves.toBe(true);
+      expect(get).not.toHaveBeenCalled();
+    });
+
+    it('detects seller signals in recent profile activity when the bio is clean', async () => {
+      const get = vi.fn()
+        .mockResolvedValueOnce({ data: { data: { subreddit: { public_description: 'Just me' } } } })
+        .mockResolvedValueOnce({
+          data: { data: { children: [{ data: { title: 'New content', subreddit: 'OnlyFansPromotions' } }] } },
+        });
+      vi.mocked(axios.create).mockReturnValue({ get } as any);
+      const client2 = new RedditApiClient(getTestConfig(), logger);
+
+      await expect(client2.isSellerProfile('testuser', ['onlyfans'])).resolves.toBe(true);
+      expect(get).toHaveBeenNthCalledWith(2, '/user/testuser/overview.json', {
+        params: { limit: 25, raw_json: 1 },
+        headers: {},
+      });
+    });
+
     it('returns true when seller keyword matches', async () => {
       const mockResponse = {
         data: {