spendctl

Connect Remote server

claude mcp add --transport http spendctl https://mcp.spendctl.dev/mcp

{
  "mcpServers": {
    "spendctl": {
      "url": "https://mcp.spendctl.dev/mcp"
    }
  }
}

{
  "servers": {
    "spendctl": {
      "type": "http",
      "url": "https://mcp.spendctl.dev/mcp"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://mcp.spendctl.dev/mcp

Tools 8 found in our last check

• sandbox_create

  Creates an isolated spendctl sandbox and returns its sandbox_id. Call it first: every other tool needs the sandbox_id, and one sandbox serves a whole conversation (create another only to try a different preset). The sandbox is a real spendctl sidecar with a throwaway wallet, a m…

• sandbox_pay

  Fetches one of the sandbox's paid endpoints (HTTP 402, x402) through the spendctl sidecar, which applies the sandbox agent's budget, allowlist and approval policy, pays with the throwaway wallet if allowed, and returns the response. Use it for every paid call in the sandbox: wit…

• await_approval

  Waits for the decision on a payment that sandbox_pay reported as held, without paying again: long-polls the sandbox sidecar for up to timeoutSeconds (default 10, at most 20) and returns pending, approved, denied, expired or withdrawn, with the ledger entry and the decision deadl…

• withdraw_approval

  Takes back a payment that sandbox_pay reported as held, as a real agent does when the task that needed the payment was cancelled or superseded: nothing is paid, the approval closes as withdrawn (distinct from deny), a later approve on that id is refused and await_approval answer…

• check_budget

  Shows the sandbox agent's spending limits, what has been spent in each window and what is left. Use it before a paid call when the remaining budget matters, or after a refusal to see which limit was hit. Returns the agent name and mode, the per-request limit, the approval thresh…

• list_receipts

  Lists the sandbox agent's most recent payment attempts, newest first: paid (amount and mock transaction hash), refused (reason codes) and waiting for approval. Use it to report what happened so far or to find a receipt id; after a hold, the approval id is in the sandbox_pay resu…

• get_policy

  Returns the sandbox's spendctl.yaml as text: the preset name and the agent's budgets, allowed hosts and approval rules. Use it to explain why a payment was refused or held, or to show what a spendctl policy file looks like. Read-only; the sandbox policy cannot be changed, create…

• approve

  Approves or denies a payment that sandbox_pay reported as waiting for approval, as the human approver would with `spendctl approve`. Use it only with an approval id from this sandbox; in the real product a human decides, in the sandbox the model plays that role. Returns the appr…

Details

More ai and media servers See all

• bv7x strategy agents

  Find bv7x prediction agents on Robinhood Chain by market; quote their sealed calls, sold via x402.

• Chronary

  Calendar API for AI agents: events, availability, Google/Microsoft setup, scheduling, and iCal.

• Mastering

  Audio mastering for AI agents: LUFS analysis, Suno artifact cleanup, free daily master.

• Modulos AI Governance Platform

  Evaluate Modulos (EU AI Act, ISO 42001, NIST AI RMF): capabilities, trust, comparisons. Book a demo.

• naulon

  Check citations and retractions by DOI, and see the x402 price an AI agent pays to cite a source.

• NextConstraint

  Your SaaS funnel's costliest leak, its fix, watchdog alerts and verdicts, from NextConstraint.