wallet_cancelListing

Cancel an ordinal marketplace listing

SERVERBitcoin SV MCP Server SOURCEb-open-io/bsv-mcp

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/b-open-io-bsv-mcp/wallet-cancellisting.md

WHAT IT DOES

What wallet_cancelListing does on Bitcoin SV MCP Server

AI agents use wallet_cancelListing to commit financial operations through Bitcoin SV MCP Server, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why wallet_cancelListing is rated Critical

Cancelling a marketplace listing is a financial/blockchain operation that modifies an active market listing for an ordinal (NFT) on the BSV blockchain. This involves broadcasting a transaction to the blockchain, which is irreversible once confirmed and directly affects financial/marketplace commitments.

From the tool's definition Cancel an ordinal marketplace listing

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs wallet_cancelListing safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Bitcoin SV MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For wallet_cancelListing, this is the rule to start with:

wallet_cancelListing Approval-gated

Any call to wallet_cancelListing is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "wallet_cancelListing": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Bitcoin SV MCP Server, apply this rule, and every wallet_cancelListing call is checked against it from then on.

FAQ

Questions about wallet_cancelListing

What does the wallet_cancelListing tool do? +

Cancel an ordinal marketplace listing. It is categorised as a Financial tool in the Bitcoin SV MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on wallet_cancelListing? +

Register the Bitcoin SV MCP Server MCP server in PolicyLayer and add a rule for wallet_cancelListing: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Bitcoin SV MCP Server. Nothing to install.

What risk level is wallet_cancelListing? +

wallet_cancelListing is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit wallet_cancelListing? +

Yes. Add a rate_limit block to the wallet_cancelListing rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block wallet_cancelListing completely? +

Set action: deny in the PolicyLayer policy for wallet_cancelListing. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides wallet_cancelListing? +

wallet_cancelListing is provided by the Bitcoin SV MCP Server MCP server (b-open-io/bsv-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Bitcoin SV MCP Server, and thousands of servers like it.

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export_wallet on Conviction → All critical-risk MCP tools → The MCP Attack Database →

Guides

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