This record as markdown: /tools/abdelstark-bitcoin-mcp/decode-tx.md
What decode_tx does on Bitcoin MCP Server
AI agents call decode_tx to retrieve information from Bitcoin MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why decode_tx is rated Low
Decoding a transaction is purely informational; it retrieves and interprets existing blockchain data without side effects, state changes, or execution of operations. This is clearly a Read operation with low severity since misuse would only result in an agent examining transaction details it shouldn't, not causing financial loss or system compromise.
From the tool's definition Tool name is 'decode_tx' and description states it 'Decode a Bitcoin transaction' — this is a read-only operation that retrieves and parses transaction data without modifying or executing anything on the blockchain.
Attacks that exploit this kind of access
The rule that runs decode_tx safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Bitcoin MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For decode_tx, this is the rule to start with:
decode_tx is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Bitcoin MCP Server, apply this rule, and every decode_tx call is checked against it from then on.
Questions about decode_tx
Decode a Bitcoin transaction. It is categorised as a Read tool in the Bitcoin MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Bitcoin MCP Server MCP server in PolicyLayer and add a rule for decode_tx: 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 MCP Server. Nothing to install.
decode_tx 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 decode_tx 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 decode_tx. 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.
decode_tx is provided by the Bitcoin MCP Server MCP server (abdelstark/bitcoin-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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