io.github.e2xlabs

stablecoinx-mcp

StablecoinX

Drive a StablecoinX business account — auth, API keys, sessions, paymaster, and webhooks.

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Package Details

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Package Arguments

Positional
Position 0
setupRun setup to install the bundled skill and register this MCP via `claude mcp add` (optional; for MCP clients that provide an `mcp add` CLI).

Environment Variables

SCX_API_URL
Default:https://api.harness.stablecoinx.com
Required

API base URL.

SCX_CHAIN_ID
Default:84532
Required

EVM chain ID for the smart account. The StablecoinX harness supports three testnets: 84532 (Base Sepolia, default), 421614 (Arbitrum Sepolia), 11155111 (Ethereum Sepolia).

THIRDWEB_CLIENT_ID
Default:830ece55cd210c34f351166a85edbd0f
Required

Public thirdweb client ID (publishable, not a secret). Must match the harness dashboard client ID.

THIRDWEB_ORIGIN
Default:https://business.harness.stablecoinx.com
Required

Origin header sent on outbound thirdweb calls; must be a domain allowed for THIRDWEB_CLIENT_ID.

SCX_STATE_PASSPHRASE
RequiredSecret

Passphrase used to encrypt the local state file (JWT / API key / session key) at rest. Pick any string.