spendctl
by FastDrop
Spend policy for AI agents that pay (x402, MPP). Login-free sandbox, real sidecar, no real funds.
Spend policy for AI agents that pay (x402, MPP). Login-free sandbox, real sidecar, no real funds. Official MCP Registry: dev.spendctl/spendctl@0.1.0. Remote endpoint: https://mcp.spendctl.dev/mcp
Problem it solves
Discoverable MCP server listed in the official MCP Registry.
How it's different
Remote MCP endpoint ingested from the official registry and probed by FastDrop.
Ingested from the official MCP Registry
FastDrop pulled this entry from the official MCP Registry as dev.spendctl/spendctl and probed the endpoint. The maker did not submit it, so the outbound link is not endorsed
and the description is not theirs.
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Read directly from the endpoint on 26 Oct 2026. Not supplied by the maker.
sandbox_createCreates an isolated spendctl sandbox: a real spendctl sidecar with a throwaway wallet, mock paid APIs and a mock facilitator. No real money moves and nothing outside the sandbox is reachable. Returns
sandbox_payFetches one of the sandbox's paid endpoints (HTTP 402, x402) through the spendctl sidecar. The sidecar applies the sandbox agent's budget, allowlist and approval policy, pays with the throwaway wallet
check_budgetShows the sandbox agent's spending limits, what has been spent in each window, and what is left.
list_receiptsLists the sandbox agent's recent payment attempts (paid, refused, waiting for approval) with amounts, reasons and mock transaction hashes.
get_policyReturns the sandbox's spendctl.yaml: the agent's budgets, allowed hosts and approval rules.
approveDecides a pending approval in this sandbox, as the human approver would with `spendctl approve`. Then repeat sandbox_pay with approvalId to complete the payment.
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