verify_ledger_attestation
READ-ONLY Secure Element attestation challenge (issue #325 P1). INTENDED behavior: issue a fresh nonce APDU to the device, receive the SE's attestation signature, verify locally against Ledger's published attestation root CA. CURRENT behavior: returns status: "not-implemented" with a structured e...
This record as markdown: /tools/io-github-szhygulin-vaultpilot-mcp/verify-ledger-attestation.md
What verify_ledger_attestation does on VaultPilot MCP
AI agents call verify_ledger_attestation to retrieve information from VaultPilot MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why verify_ledger_attestation is rated Low
This is a pure attestation verification tool that retrieves and validates cryptographic signatures from a Ledger Secure Element. The description confirms read-only semantics: it issues a challenge, receives a response, and performs local verification. The current implementation returns 'not-implemented' status, further limiting any potential impact.
From the tool's definition Tool name and description explicitly state 'READ-ONLY' and 'issue a fresh nonce APDU to the device, receive the SE's attestation signature, verify locally'.
Risk signalsAdmin/system-level operation
Attacks that exploit this kind of access
The rule that runs verify_ledger_attestation safely
PolicyLayer is an MCP gateway: it sits between your AI agents and VaultPilot MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For verify_ledger_attestation, this is the rule to start with:
verify_ledger_attestation 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 VaultPilot MCP, apply this rule, and every verify_ledger_attestation call is checked against it from then on.
Questions about verify_ledger_attestation
READ-ONLY Secure Element attestation challenge (issue #325 P1). INTENDED behavior: issue a fresh nonce APDU to the device, receive the SE's attestation signature, verify locally against Ledger's published attestation root CA. CURRENT behavior: returns status: "not-implemented" with a structured explanation — the actual cryptographic check is gated on live-device research that hasn't happened yet (canonical APDU for current firmware, PEM/DER of Ledger's attestation root CA, signature-verification algorithm). Sibling defenses cover most of the threat surface in the meantime: verify_ledger_firmware (P3, #354), verify_ledger_live_codesign (P4, #360), the WC peer pin (P5, #356), and the per-chain device identity binding at signing time. The tool surface is shipped now so future research can fill in the implementation without a redesign. 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 verify_ledger_attestation: 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.
verify_ledger_attestation 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 verify_ledger_attestation 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 verify_ledger_attestation. 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.
verify_ledger_attestation 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.
More on VaultPilot, and thousands of servers like it.
This server
Across the catalogue