signed_agent_card_canonical_hash
A read tool on the Tenzro Ledger MCP server.
This record as markdown: /tools/network-tenzro-tenzro/signed-agent-card-canonical-hash.md
What signed_agent_card_canonical_hash does on Tenzro Ledger MCP
AI agents call signed_agent_card_canonical_hash to retrieve information from Tenzro Ledger MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why signed_agent_card_canonical_hash is rated Low
With an empty description, confidence is reduced. However, the naming pattern indicates a read-only operation that computes or retrieves a hash—typical of identity/verification operations in a ledger system. No evidence suggests data mutation, deletion, or financial transaction. The tool appears to be a lookup or derivation function rather than an action with side effects.
From the tool's definition Tool name 'signed_agent_card_canonical_hash' suggests retrieval or computation of a hash value for an agent card. The suffix '_hash' and 'canonical' imply a deterministic read operation that returns a digest or identifier.
Attacks that exploit this kind of access
The rule that runs signed_agent_card_canonical_hash safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Tenzro Ledger MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For signed_agent_card_canonical_hash, this is the rule to start with:
signed_agent_card_canonical_hash 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 Tenzro Ledger MCP, apply this rule, and every signed_agent_card_canonical_hash call is checked against it from then on.
Questions about signed_agent_card_canonical_hash
signed_agent_card_canonical_hash is a read tool on the Tenzro Ledger MCP server. It is categorised as a Read tool in the Tenzro Ledger MCP MCP Server, which means it retrieves data without modifying state.
Register the Tenzro Ledger MCP server in PolicyLayer and add a rule for signed_agent_card_canonical_hash: 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 Tenzro Ledger MCP. Nothing to install.
signed_agent_card_canonical_hash 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 signed_agent_card_canonical_hash 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 signed_agent_card_canonical_hash. 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.
signed_agent_card_canonical_hash is provided by the Tenzro Ledger MCP server (https://canton-mcp.tenzro.network/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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