generated: '2026-07-21'
method: searched
source: https://docs.paysponge.com/wallet/mcp.md
description: >-
  Sponge separates test and live via key prefixes. Test keys expose the same tool
  surface as live keys, except mainnet-only capabilities are hidden. No published
  magic test card numbers or fixture values were found at capture time; only the
  test/live mode separation is documented.
test_live_separation:
  wallet_keys:
    live_prefix: sponge_live_
    test_prefix: sponge_test_
  gateway_keys:
    live_prefix: sk_live_
    test_prefix: sk_test_
test_mode_behavior:
- >-
  Test keys hide the create_crypto_onramp tool on the trading MCP server because
  crypto onramp links are mainnet-only.
- >-
  The Gateway MCP server accepts either sk_test_ or sk_live_ bearer keys (or a
  dashboard session cookie).
test_values:
  documented: false
  notes: No published test card numbers, test IBANs, or magic test identifiers were found in the docs at capture time.