Two-part surface for cross-repo contract discovery. (1) Match unresolved FETCHES edges (consumer) against Route nodes (producer) across every repo in the group — this is the graph-derived HTTP surface. (2) When
AI agents call group_contracts 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 performs discovery and matching of contract information across repositories by querying a hybrid knowledge graph. It identifies HTTP surfaces and dependencies through pattern matching, which is fundamentally a read operation with no side effects.
From the tool's definition Tool description indicates 'cross-repo contract discovery' and 'match unresolved FETCHES edges' and 'graph-derived HTTP surface' — these are queries/inspection operations against a knowledge graph to discover and analyze contracts, not to modify, execute, or…
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
Two-part surface for cross-repo contract discovery. (1) Match unresolved FETCHES edges (consumer) against Route nodes (producer) across every repo in the group — this is the graph-derived HTTP surface. (2) When. 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 group_contracts: 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.
group_contracts 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 group_contracts 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 group_contracts. 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.
group_contracts 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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