READ-ONLY — bitcoind getchaintips output: every fork the node knows about, with branchlen and status (active / valid-fork / valid-headers / headers-only / invalid). THE primitive for fork / deep-reorg detection — Esplora indexers cannot expose this; they only know the chain they followed. Require...
AI agents call get_btc_chain_tips to retrieve information from VaultPilot MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Even though get_btc_chain_tips only reads data, uncontrolled read access leaks sensitive information and racks up API costs — an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
READ-ONLY — bitcoind getchaintips output: every fork the node knows about, with branchlen and status (active / valid-fork / valid-headers / headers-only / invalid). THE primitive for fork / deep-reorg detection — Esplora indexers cannot expose this; they only know the chain they followed. Requires BITCOIN_RPC_URL configured (self-hosted bitcoind or a public RPC provider). Returns available: false with a setup hint when RPC is not configured. Issue #248 / #233 v2. It is categorised as a Read tool in the VaultPilot MCP MCP Server, which means it retrieves data without modifying state.
Register the VaultPilot MCP server in PolicyLayer and add a rule for get_btc_chain_tips: 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 VaultPilot MCP. Nothing to install.
get_btc_chain_tips 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 get_btc_chain_tips 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 get_btc_chain_tips. 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.
get_btc_chain_tips is provided by the VaultPilot MCP server (vaultpilot-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.