Give an AI agent a gas wallet (MCP)

Agents can read balances and invoice state. They should not push money on-chain without an idempotency key and an approval policy. Pontoon's /mcp is standard Streamable HTTP. Writes stay on REST.

Why sponsorship is not an MCP tool

  • Sponsorship spends prepaid budget and on-chain inventory; it needs an idempotencyKey.
  • Most agent auto-approve policies are unsafe for “send funds.”
  • Read tools can sit in ChatGPT / Claude / Cursor. Write tools stay in your backend.
Other MCP servers already invoice in crypto for agents. Pontoon's slot is gas / Energy provisioning plus USDT checkout state, not another generic payments MCP.

Probe

bash
curl https://pontoon.dev/mcp \
  -H 'content-type: application/json' \
  -H 'accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

With an API key the agent can read prepaid balance and checkout intents. To actually sponsor gas: POST /api/v1/sponsor. Client setup: AI and MCP.