Find all Hive Prior receipts for a content hash. Multiple inventors can stamp the same content — this endpoint proves who stamped first by returning records in chronological order with a first_mover flag.
AI agents call prior_by_hash to retrieve information from Hive Mcp Prior without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves existing patent priority records by content hash. It performs a read-only lookup with no side effects, modifications, or destructive actions. The description explicitly states it 'finds' and 'returns records', confirming a pure read operation.
From the tool's definition Find all Hive Prior receipts for a content hash... returning records in chronological order with a first_mover flag
Attacks that exploit this kind of access
Find all Hive Prior receipts for a content hash. Multiple inventors can stamp the same content — this endpoint proves who stamped first by returning records in chronological order with a first_mover flag. It is categorised as a Read tool in the Hive Mcp Prior MCP Server, which means it retrieves data without modifying state.
Register the Hive Mcp Prior MCP server in PolicyLayer and add a rule for prior_by_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 Hive Mcp Prior. Nothing to install.
prior_by_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 prior_by_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 prior_by_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.
prior_by_hash is provided by the Hive Mcp Prior MCP server (srotzin/hive-mcp-prior). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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