Fathom Cost Tuning

API Call Reduction

class FathomTranscriptCache {
  private cache = new Map<string, { transcript: string; summary: string }>();

  async getTranscript(meetingId: string, apiFn: () => Promise<any>): Promise<any> {
    // Transcripts are immutable after generation — cache permanently
    if (this.cache.has(meetingId)) return this.cache.get(meetingId);
    const result = await apiFn();
    this.cache.set(meetingId, result);
    return result;
  }

  async listMeetings(params: { include_summary: boolean }): Promise<any[]> {
    // Always use include_summary=true to avoid N+1 calls
    // Fetches summaries inline with the list response
    const response = await fetch('/api/meetings?include_summary=true');
    return response.json();
  }
}

Usage Monitoring

class FathomUsageTracker {
  private apiCalls = 0;
  private readonly rateLimit = 60; // 60 req/min
  private windowStart = Date.now();

  async throttledCall<T>(fn: () => Promise<T>): Promise<T> {
    if (Date.now() - this.windowStart > 60_000) {
      this.apiCalls = 0;
      this.windowStart = Date.now();
    }
    if (this.apiCalls >= this.rateLimit) {
      const waitMs = 60_000 - (Date.now() - this.windowStart);
      await new Promise(r => setTimeout(r, waitMs));
      this.apiCalls = 0;
      this.windowStart = Date.now();
    }
    this.apiCalls++;
    return fn();
  }

  getUsageReport(): { callsThisMinute: number; remainingCapacity: number } {
    return { callsThisMinute: this.apiCalls, remainingCapacity: this.rateLimit - this.apiCalls };
  }
}

Cost Optimization Checklist

• Use webhooks for meeting completion events instead of polling
• Always pass include_summary=true in list requests to avoid extra calls
• Cache transcripts permanently — they never change after generation
• Batch API processing within the 60 req/min rate limit
• Audit team seats quarterly and remove inactive users
• Archive transcripts older than 90 days to reduce storage costs
• Disable auto-recording for informal or standup meetings
• Skip CRM sync for internal-only meetings

Error Handling

Resources

• Fathom Pricing
• Fathom API Documentation

Next Steps

See fathom-performance-tuning.