List available fiat-to-crypto onramp providers with supported currencies.
AI agents call buy_get_providers to retrieve information from Bitcoin wallet MCP server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves informational data about onramp providers and their supported currencies. It does not execute transactions, move money, modify data, or trigger irreversible actions. It is purely a lookup/list operation that provides reference information to inform user decision-making about which provider to use.
From the tool's definition Tool name 'buy_get_providers' and description 'List available fiat-to-crypto onramp providers with supported currencies' indicate data retrieval with no side effects. The verb 'List' and action of querying available providers are read-only operations.
Attacks that exploit this kind of access
List available fiat-to-crypto onramp providers with supported currencies. It is categorised as a Read tool in the Bitcoin wallet MCP server MCP Server, which means it retrieves data without modifying state.
Register the Bitcoin wallet MCP server MCP server in PolicyLayer and add a rule for buy_get_providers: 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 wallet MCP server. Nothing to install.
buy_get_providers is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the buy_get_providers 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.
Set action: deny in the PolicyLayer policy for buy_get_providers. 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.
buy_get_providers is provided by the Bitcoin wallet MCP server MCP server (markmhendrickson/mcp-server-bitcoin). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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