Non-coder builds full prospecting stack with Claude Code and APIs

A Reddit user on r/ClaudeAI shared how they built a complete outbound prospecting system over a weekend using Claude Code, despite having zero coding experience. The system replaces a manual multi-tool setup and relies on three API-based tools chained together by Claude Code.

Workflow

• ICP file: The user maintains a plain text file with Ideal Customer Profile criteria (industry, headcount range, funding stage, target personas). Claude Code reads this file as context.
• Company search: Claude Code queries Crustdata API with ICP filters, returning structured data (headcount, funding, tech stack, hiring signals). The user tried Exa before but found the data insufficiently structured.
• People search: Filters by persona (Director of Sales, Head of Revenue, VP Marketing, etc.) within target companies.
• Contact enrichment: Uses FullEnrich waterfall provider checking 20+ sources; only pays for verified contacts.
• Personalization: Claude Code pulls recent social posts for each contact and drafts personalized openers referencing specific content.
• Monitoring: Webhooks fire on job changes and hiring signals; Claude Code auto-generates outreach when trigger events occur.

Key lessons

• Read API docs carefully — the user burned credits by using the expensive realtime endpoint when the cached version sufficed for 90% of searches (33x cost difference).
• Claude Code handles chaining API calls well when given enough context in plain English. The ICP file is critical for filtering.
• Personalization quality and webhook relevance still need iteration (some irrelevant job posting alerts).

Stack

• Crustdata: Company/people search, firmographics, hiring signals, social posts (API).
• FullEnrich: Email/phone waterfall with inline verification (API).
• Instantly: Sending with inbox management and warming.

The user emphasizes that for solo founders or small teams running outbound without an engineering team, Claude Code + one good data API + a sending tool is sufficient.