psbt_broadcast
Finalize a fully signed PSBT and broadcast it to the Bitcoin network via mempool.space.
This record as markdown: /tools/io-github-aibtcdev-mcp-server/psbt-broadcast.md
What psbt_broadcast does on Aibtc
AI agents invoke psbt_broadcast 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 psbt_broadcast is rated High
Broadcasting a signed PSBT to the Bitcoin network is an irreversible on-chain transaction. Once broadcast, it cannot be undone. While it could be considered Financial (it moves BTC), the primary action is executing a network broadcast of a cryptographic transaction. The irreversibility and potential to move arbitrary amounts of Bitcoin make this critical severity.
From the tool's definition Finalize a fully signed PSBT and broadcast it to the Bitcoin network via mempool.space
Attacks that exploit this kind of access
The rule that runs psbt_broadcast 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 psbt_broadcast, this is the rule to start with:
psbt_broadcast 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 psbt_broadcast call is checked against it from then on.
Questions about psbt_broadcast
Finalize a fully signed PSBT and broadcast it to the Bitcoin network via mempool.space. 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 psbt_broadcast: 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.
psbt_broadcast 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 psbt_broadcast 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 psbt_broadcast. 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.
psbt_broadcast 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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