Return a class/interface declaration plus its method and property signatures with bodies elided (stub syntax per language). For a standalone function, returns a single signature. Saves tokens vs reading the whole file.
AI agents call signature to retrieve information from OpenCodeHub MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool queries and retrieves code signature information (stubs without bodies) from indexed repositories. This is a read-only operation that extracts and returns syntactic/structural data for inspection. It has no side effects on the codebase, no execution capability, and no destructive or financial impact. The primary use is code intelligence and navigation for AI agents during analysis.
From the tool's definition Tool returns 'class/interface declaration plus method and property signatures' and 'For a standalone function, returns a single signature' — pure retrieval of code structure metadata. No modification, execution, deletion, or financial effects.
Attacks that exploit this kind of access
Return a class/interface declaration plus its method and property signatures with bodies elided (stub syntax per language). For a standalone function, returns a single signature. Saves tokens vs reading the whole file. It is categorised as a Read tool in the OpenCodeHub MCP Server MCP Server, which means it retrieves data without modifying state.
Register the OpenCodeHub MCP Server MCP server in PolicyLayer and add a rule for signature: 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 OpenCodeHub MCP Server. Nothing to install.
signature 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 signature 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 signature. 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.
signature is provided by the OpenCodeHub MCP Server MCP server (theagenticguy/opencodehub). 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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