Know what your AI agent can actually do.
Agents now hold real permissions: customer data, tools, APIs, sometimes money. We test whether yours can cross a tenant, misuse a tool, leak a credential or act without approval, and prove it if it can.
From $1,500 as a focused review · Included in Continuous scoping · Authorized testing only
The controls around the model, not just the model.
Permissions & authorization
Can the agent read or change data the signed-in user isn't allowed to?
Tool-call limits
Can a user, or text the agent reads, make it call a tool it shouldn't, or with arguments it shouldn't?
Tenant isolation
Can one customer's agent session reach another customer's data or execution?
Prompt injection that crosses a boundary
Not whether the model says something odd: whether injected text makes it act.
Credentials & secrets
Are API keys and tokens scoped per tenant, kept out of prompts, logs and tool output?
Sandboxes & unintended actions
Code execution, connected APIs, email and payments: can the agent do what nobody approved?
What counts as a finding: a model saying something odd isn't a vulnerability. An agent doing something it shouldn't is.
Find the risk. Fix the code. Prove the fix.
Map the agent
Its tools, permissions, data sources, MCP servers and the boundaries your app enforces around it.
Attack the boundaries
Authorized testing with real test accounts across roles and tenants, in the scope you approve in writing.
Prove, fix and verify
Every crossed boundary is reproduced by an engineer, sent to your coding agent over MCP, and retested before it closes.
Your coding agent fixes it. Our retest closes it.
Findings arrive in Claude Code, Cursor or any MCP agent with the evidence and the fix. Your agent can propose a patch; only a Zentinel engineer replaying the original attack can mark it verified.
Connect your agentTeams shipping agents to real customers.
Agentic SaaS
Agents that act inside your customers' accounts, data and workflows.
AI infrastructure & MCP
MCP servers, tool platforms and model gateways other teams build on.
Enterprise-bound startups
When a buyer asks “what can your agent access?”, you answer with evidence.
Find out what your agent can do, before someone else does.
Testing only with written authorization, within the scope you approve.