---
name: fathom-sdk-patterns
description: 'Production-ready Fathom API client patterns in Python and TypeScript.

  Use when building reusable Fathom clients, implementing meeting data pipelines,

  or wrapping the Fathom REST API.

  Trigger with phrases like "fathom API patterns", "fathom client wrapper",

  "fathom Python client", "fathom TypeScript".

  '
allowed-tools: Read, Write, Edit
version: 1.6.0
license: MIT
author: Jeremy Longshore <jeremy@intentsolutions.io>
tags:
- saas
- meeting-intelligence
- ai-notes
- fathom
compatibility: Designed for Claude Code
---
# Fathom SDK Patterns

## Overview

Build a narrow Fathom client boundary that makes consent, data handling, idempotency, redaction, and human ownership explicit.

## Prerequisites

- Scoped development credentials, an approved recording/data policy, synthetic fixtures, and existing test conventions.

## Instructions

1. Inject credentials only from the approved secret manager and validate request/response contracts at the boundary.
2. Use stable IDs, bounded retries, and redacted telemetry for sync/follow-up actions.
3. Unit-test with mocks and run one synthetic development integration check before promotion.

## Output

- A test-backed SDK boundary with scoped credentials, safe errors, redacted observability, and rollback-friendly behavior.

## Examples

Instantiate the client with a development secret reference, send a synthetic meeting/action event with an idempotency key, and assert the mocked CRM-sync payload. Record only opaque IDs/results; never log a recording, transcript, contact, or token.

## Python Client

```python
import os, requests
from dataclasses import dataclass
from typing import Optional

@dataclass
class FathomConfig:
    api_key: str
    base_url: str = "https://api.fathom.ai/external/v1"
    timeout: int = 30

class FathomClient:
    def __init__(self, config: Optional[FathomConfig] = None):
        self.config = config or FathomConfig(api_key=os.environ["FATHOM_API_KEY"])
        self.session = requests.Session()
        self.session.headers.update({"X-Api-Key": self.config.api_key})

    def list_meetings(self, limit: int = 20, **filters) -> list[dict]:
        params = {"limit": limit, **filters}
        resp = self.session.get(f"{self.config.base_url}/meetings", params=params, timeout=self.config.timeout)
        resp.raise_for_status()
        return resp.json().get("meetings", [])

    def get_transcript(self, recording_id: str) -> dict:
        resp = self.session.get(f"{self.config.base_url}/recordings/{recording_id}/transcript", timeout=self.config.timeout)
        resp.raise_for_status()
        return resp.json()

    def get_summary(self, recording_id: str) -> dict:
        resp = self.session.get(f"{self.config.base_url}/recordings/{recording_id}/summary", timeout=self.config.timeout)
        resp.raise_for_status()
        return resp.json()
```

## TypeScript Client

```typescript
class FathomClient {
  private apiKey: string;
  private baseUrl: string;

  constructor(apiKey?: string) {
    this.apiKey = apiKey ?? process.env.FATHOM_API_KEY!;
    this.baseUrl = "https://api.fathom.ai/external/v1";
  }

  private async get<T>(path: string, params?: Record<string, string>): Promise<T> {
    const url = new URL(`${this.baseUrl}${path}`);
    if (params) Object.entries(params).forEach(([k, v]) => url.searchParams.set(k, v));
    const resp = await fetch(url, { headers: { "X-Api-Key": this.apiKey } });
    if (!resp.ok) throw new Error(`Fathom ${resp.status}: ${await resp.text()}`);
    return resp.json();
  }

  async listMeetings(limit = 20) { return this.get<{meetings: any[]}>("/meetings", {limit: String(limit)}); }
  async getTranscript(id: string) { return this.get(`/recordings/${id}/transcript`); }
  async getSummary(id: string) { return this.get(`/recordings/${id}/summary`); }
}
```

## Error Handling

| Status | Meaning | Action |
|--------|---------|--------|
| 401 | Invalid API key | Regenerate key |
| 404 | Recording not found | Verify recording ID |
| 429 | Rate limited (60/min) | Backoff and retry |

## Resources

- [Fathom API Reference](https://developers.fathom.ai/api-reference)

## Next Steps

Apply in `fathom-core-workflow-a` for meeting analytics.