Fathom Local Dev Loop

What it does

When your agent uses it

• Building meeting analytics tools
• Testing webhook handlers
• Iterating on transcript processing pipelines
• With phrases like fathom dev setup

Example prompts

• “fathom dev setup”
• “fathom local testing”
• “develop with fathom”
• “/fathom-local-dev-loop”

Requirements

• Python 3
• Compatibility (from SKILL.md): Designed for Claude Code
• Pre-approved tools (allowed-tools): Read, Write, Edit, Bash(npm:*), Bash(python3:*), Grep

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

1. 1Make one scoped integration/configuration change using development-only data and identity.
2. 2Inspect the diff, run focused mock/unit checks, and execute a bounded synthetic workflow test.
3. 3Commit reviewed changes separately and promote only through normal protected workflow.

What it can do on your machine

Read from SKILL.md and the folder at commit 23ea8d4. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Read
  • Write
  • Edit
  • Bash(npm:*)
  • Bash(python3:*)
  • Grep

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • python3

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  Links to these hosts (documentation or services it may open):

  • developers.fathom.ai

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  Designed for Claude Code

  From compatibility in the SKILL.md frontmatter.

Context cost

Fathom Local Dev Loop loads about 843 tokens when it runs. Until then it costs about 82 tokens; SKILL.md has 200 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~82

When it runs · the whole SKILL.md, loaded when a task matches

~843

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

• NoteMentions a .env fileSKILL.md:71

  ├── .env.local

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from jeremylongshore/tons-of-skills-marketplace at commit 23ea8d4, republished under its MIT licence (© jeremylongshore). 200 words, ~843 tokens.

name

fathom-local-dev-loop

description

Set up local development for Fathom API integrations with mock meeting data. Use when building meeting analytics tools, testing webhook handlers, or iterating on transcript processing pipelines. Trigger with phrases like "fathom dev setup", "fathom local testing", "develop with fathom", "fathom mock data".

allowed-tools

Read, Write, Edit, Bash(npm:*), Bash(python3:*), Grep

compatibility

Designed for Claude Code

version

1.6.0

license

MIT

author

Jeremy Longshore <jeremy@intentsolutions.io>

tags

saas, meeting-intelligence, ai-notes, fathom

fathom-integration/
├── src/
│   ├── fathom_client.py
│   ├── transcript_processor.py
│   └── webhook_handler.py
├── tests/
│   ├── fixtures/
│   │   ├── meeting.json
│   │   └── transcript.json
│   └── test_processor.py
├── .env.local
└── requirements.txt

MOCK_MEETING = {
    "id": "mtg-123",
    "title": "Product Review Q1",
    "created_at": "2026-03-20T14:00:00Z",
    "duration_seconds": 1800,
    "participants": ["alice@example.com", "bob@example.com"],
    "summary": "Discussed Q1 roadmap priorities. Agreed to focus on API improvements.",
    "action_items": [
        {"text": "Alice to draft API spec by Friday", "assignee": "alice@example.com"},
        {"text": "Bob to review competitor analysis", "assignee": "bob@example.com"}
    ]
}

MOCK_TRANSCRIPT = {
    "segments": [
        {"speaker": "Alice", "text": "Let us review the Q1 priorities.", "start_time": 0.0},
        {"speaker": "Bob", "text": "I think the API work should come first.", "start_time": 5.2},
    ]
}

# Run with mock data (no API calls)
FATHOM_MOCK=true python3 src/transcript_processor.py

# Run with real API
python3 src/transcript_processor.py

© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/.curated/fathom-local-dev-loop of jeremylongshore/tons-of-skills-marketplace.

Open the folder on GitHubat commit 23ea8d4