SpendPreflight for Claude.ai

io.github.spendpreflight/spendpreflight

Preflight x402 payments. Base ERC-8004 agent #1151628; wallet binding verified Nov 3, 2026.

client:Claude.ai transport:streamable-http tools:17

Install SpendPreflight in Claude.ai

Settings → Connectors → Add custom connector

https://api.spendpreflight.com/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

preflight_payment
check_payee
lint_endpoint
check_token
payment_receipt
get_service_info
verify_payee_binding
quote_check
listing_guard
check_listing
security_check
seller_index
domain_auth
check_endpoint
wallet_statement
find_rv_stations
size_solar

SpendPreflight in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

SpendPreflight MCP server