AI agents invoke deep_research_heavy to trigger actions in Openai. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
The sibling tool 'deep_research' and the server description mention 'deep research' as an external operation triggered via ChatGPT Plus/Pro account. 'deep_research_heavy' likely triggers a more intensive version of that operation. With no description, confidence is low, but by analogy to the sibling tool it most plausibly executes an external research process rather than simply reading local data.
From the tool's definition Tool name 'deep_research_heavy' on a server that includes 'deep_research' among sibling tools; description is empty.
Attacks that exploit this kind of access
deep_research_heavy. It is categorised as a Execute tool in the Openai MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Openai MCP server in PolicyLayer and add a rule for deep_research_heavy: 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 Openai. Nothing to install.
deep_research_heavy is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the deep_research_heavy 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 deep_research_heavy. 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.
deep_research_heavy is provided by the Openai MCP server (robotlearning123/gpt2agent). 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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