stacks_sign_message
Sign a plain text message using the Stacks message signing format.
This record as markdown: /tools/io-github-aibtcdev-mcp-server/stacks-sign-message.md
What stacks_sign_message does on Aibtc
AI agents invoke stacks_sign_message to trigger actions in Aibtc. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why stacks_sign_message is rated High
Signing a message with a private key is a cryptographic operation with significant security implications. It can be used to authorize transactions, prove identity, or enable downstream financial/destructive actions. Given the financial context of the server (DeFi/blockchain tools like alex_swap, bitflow_create_order), a signed message could be used to authorize transfers or smart contract interactions.
From the tool's definition Sign a plain text message using the Stacks message signing format
Attacks that exploit this kind of access
The rule that runs stacks_sign_message safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Aibtc, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For stacks_sign_message, this is the rule to start with:
stacks_sign_message stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Aibtc, apply this rule, and every stacks_sign_message call is checked against it from then on.
Questions about stacks_sign_message
Sign a plain text message using the Stacks message signing format. It is categorised as a Execute tool in the Aibtc MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Aibtc MCP server in PolicyLayer and add a rule for stacks_sign_message: 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 Aibtc. Nothing to install.
stacks_sign_message is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the stacks_sign_message 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 stacks_sign_message. 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.
stacks_sign_message is provided by the Aibtc MCP server (aibtcdev/aibtc-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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