Web Research with x402 APIs

Setup

Quick Reference

https://stableenrich.dev/api/exa/search

https://stableenrich.dev/api/exa/find-similar

https://stableenrich.dev/api/exa/contents

https://stableenrich.dev/api/exa/answer

https://stableenrich.dev/api/firecrawl/scrape

https://stableenrich.dev/api/firecrawl/search

When to Use What

Exa Neural Search

npx agentcash fetch https://stableenrich.dev/api/exa/search -m POST -b '{
  "query": "startups building AI agents for customer support",
  "numResults": 10,
  "type": "neural"
}'

• query

  - Search query (required)

• numResults

  - Number of results (default: 10, max: 25)

• type

  - "neural" (semantic) or "keyword" (traditional)

• includeDomains

  - Only search these domains

• excludeDomains

  - Skip these domains

• startPublishedDate

  /

  endPublishedDate

  - Date range filter

Find Similar Pages

npx agentcash fetch https://stableenrich.dev/api/exa/find-similar -m POST -b '{
  "url": "https://example.com/article-i-like",
  "numResults": 10
}'

• Finding competitor products
• Discovering related content
• Expanding research sources

Extract Text Content

npx agentcash fetch https://stableenrich.dev/api/exa/contents -m POST -b '{
  "urls": [
    "https://example.com/article1",
    "https://example.com/article2"
  ]
}'

• urls

  - Array of URLs to extract

• text

  - Include full text (default: true)

• highlights

  - Include key highlights

Direct Answers

npx agentcash fetch https://stableenrich.dev/api/exa/answer -m POST -b '{"query": "What is the population of Tokyo?"}'

• Factual questions
• Quick lookups
• Verification of claims

Firecrawl Scrape

npx agentcash fetch https://stableenrich.dev/api/firecrawl/scrape -m POST -b '{"url": "https://example.com/page-to-scrape"}'

• url

  - Page to scrape (required)

• formats

  - Output formats: ["markdown", "html", "links"]

• onlyMainContent

  - Skip nav/footer/ads (default: true)

• waitFor

  - Wait ms for JS to render

• Handles JavaScript-rendered content
• Bypasses common blocking
• Extracts main content only
• LLM-optimized markdown output

Firecrawl Search

npx agentcash fetch https://stableenrich.dev/api/firecrawl/search -m POST -b '{
  "query": "best practices for react server components",
  "limit": 5
}'

• query

  - Search query (required)

• limit

  - Number of results (default: 5)

• scrapeOptions

  - Options passed to scraper

Workflows

Deep Research

• (Optional) Check balance:

  npx agentcash wallet info

• Search broadly with Exa
• Find related sources with find-similar
• Extract content from top sources
• Synthesize findings

npx agentcash fetch https://stableenrich.dev/api/exa/search -m POST -b '{"query": "AI agents in healthcare 2024", "numResults": 15}'

npx agentcash fetch https://stableenrich.dev/api/exa/find-similar -m POST -b '{"url": "https://best-article-found.com"}'

npx agentcash fetch https://stableenrich.dev/api/exa/contents -m POST -b '{"urls": ["url1", "url2", "url3"]}'

Blocked Site Scraping

• Try WebFetch first (free)
• If blocked/empty, use Firecrawl with

  waitFor

  for JS-heavy sites

npx agentcash fetch https://stableenrich.dev/api/firecrawl/scrape -m POST -b '{"url": "https://blocked-site.com/article", "waitFor": 3000}'

Cost Optimization

• Use Exa contents ($0.002) when you already have URLs
• Use WebSearch/WebFetch first (free) and fall back to x402 endpoints
• Batch URL extraction - pass multiple URLs to Exa contents
• Limit results - request only as many as needed