Get witness chain provenance
AI agents call iot_witness_chain to retrieve information from Claude Flow without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves historical provenance information from a witness chain (likely an immutable audit log or blockchain-style record). Reading provenance data is a non-destructive query operation that does not create, modify, delete, or execute external actions. It poses minimal risk as it only exposes information that already exists in the system.
From the tool's definition Tool name 'iot_witness_chain' with description 'Get witness chain provenance' indicates retrieval of existing provenance/audit chain data. The verb 'Get' explicitly signals a read operation with no modification or side effects.
Attacks that exploit this kind of access
Get witness chain provenance. It is categorised as a Read tool in the Claude Flow MCP Server, which means it retrieves data without modifying state.
Register the Claude Flow MCP server in PolicyLayer and add a rule for iot_witness_chain: 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 Claude Flow. Nothing to install.
iot_witness_chain 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 iot_witness_chain 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 iot_witness_chain. 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.
iot_witness_chain is provided by the Claude Flow MCP server (claude-flow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.