generated: '2026-07-21'
method: searched
status: published
source: https://docs.paysponge.com/wallet/mcp.md
docs:
- https://docs.paysponge.com/wallet/mcp.md
- https://docs.paysponge.com/gateway/mcp.md
description: Sponge publishes official, hosted (remote) MCP servers for both the agent Wallet and the
  merchant Gateway. Wallet servers authenticate with an agent API key (sponge_live_...) for CLI clients,
  or OAuth 2.0 (PKCE, dynamic client registration) for connectors that support it. The Gateway server
  authenticates with sk_test_/sk_live_ secret keys or a dashboard session cookie.
servers:
- name: sponge-wallet
  transport: http
  url: https://api.wallet.paysponge.com/mcp
  auth: bearer agent API key (sponge_live_...) or OAuth 2.0 (S256 PKCE)
  description: Full agent wallet tool surface — balances, transfers, swaps, bridges, cards, x402/MPP payments,
    trading, onramp.
- name: sponge-wallet-trading
  transport: http
  url: https://api.wallet.paysponge.com/trade/mcp
  auth: bearer agent API key (sponge_live_...) or OAuth 2.0
  description: Trading-only server exposing get_balance, render_portfolio_ui, render_trade_ui, transfer,
    bridge, create_crypto_onramp (mainnet-only; hidden on test keys), and a read-only hyperliquid tool.
    Ships MCP Apps UI widgets for ChatGPT.
  tools:
  - name: get_balance
  - name: render_portfolio_ui
    description: Read-only MCP Apps widget with balances plus Hyperliquid and Polymarket status.
  - name: render_trade_ui
    description: Prefilled Hyperliquid confirmation widget; submits the confirmed order via an app-only
      execution tool.
  - name: transfer
  - name: bridge
  - name: create_crypto_onramp
    description: Mainnet-only; hidden when authenticated with a test key.
  - name: hyperliquid
    description: Read-only.
- name: sponge-gateway
  transport: http
  url: https://api.paysponge.com/mcp
  auth: bearer sk_test_/sk_live_ secret key or dashboard session cookie
  description: Merchant Gateway server for spec-first service creation — inspect docs, discover/import
    an OpenAPI spec, plan and create paid gateway services and endpoints. Writes the same objects as /api/services
    and /api/endpoints.
  tools:
  - name: list_services
  - name: plan_service_from_source
    description: Safest default — rejects ambiguous index pages, tries OpenAPI sources first, returns
      a deterministic service draft.
  - name: discover_openapi_spec
  - name: fetch_openapi_spec
  - name: apply_service_plan
  - name: create_service
  - name: update_service
  - name: list_endpoints
  - name: create_endpoint
  - name: update_endpoint
  - name: delete_endpoint
  - name: import_from_spec
deployment:
  mode: remote
  endpoint: https://api.wallet.paysponge.com/mcp
  verified: probed
  probe: gated
  checked: '2026-08-12'
  source: catalog MCP census