services: add Surf Twitter, Reddit, and Web data APIs

[tenequm]

Services: Surf Data APIs

Three first-party data APIs with native MPP integration, accepting Tempo USDC.

Surf Twitter

URL: https://twitter.surf.cascade.fyi
Endpoints: 26 (tweets, users, lists, communities, spaces, trends)
Pricing: $0.001 - $0.005 per request

Full Twitter/X data access: search tweets, look up users and tweets, browse lists, communities, spaces, and trending topics. Supports pagination, batch lookups, and relationship checks.

Surf Reddit

URL: https://reddit.surf.cascade.fyi
Endpoints: 7 (search, subreddits, posts, comments, users)
Pricing: $0.001 - $0.005 per request

Reddit data: search posts, browse subreddits, read threads with full comment trees, and look up user profiles with post/comment history.

Surf Web

URL: https://web.surf.cascade.fyi
Endpoints: 2 (crawl, search)
Pricing: $0.005 - $0.01 per request

Web crawling (any URL to clean markdown/HTML) and AI-powered web search.

Why these are novel

• First-party MPP: Payment handling built directly into each service, not proxied.
• Comprehensive Twitter coverage: 26 endpoints covering the full Twitter/X data surface (tweets, users, lists, communities, spaces, trends). No existing service in the directory covers Twitter/X.
• Also support MCP (Model Context Protocol) for direct AI agent tool calls alongside REST.

Checklist

• All services are live and accepting MPP payments
• schemas/services.ts updated
• node scripts/generate-discovery.ts run, schemas/discovery.json committed
• node scripts/gen-icons.cjs run, icons committed
• pnpm check:types passes
• pnpm build succeeds

Verify they're live

# Twitter - 402 challenge
curl -s https://twitter.surf.cascade.fyi/users/CoinbaseDev -o /dev/null -w "%{http_code}"
# Returns: 402

# Reddit - 402 challenge
curl -s https://reddit.surf.cascade.fyi/r/programming -o /dev/null -w "%{http_code}"
# Returns: 402

# Web - 402 challenge
curl -s https://web.surf.cascade.fyi/v1/crawl \
  -X POST -H "Content-Type: application/json" \
  -d '{"url":"https://mpp.dev","format":"markdown"}' \
  -o /dev/null -w "%{http_code}"
# Returns: 402

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