Services · Guardrail Engineering
Put controls around the actions that matter.
Engineer identity, action policies, approvals and evidence into your agent workflows, with a staged rollout.
What the engagement covers
Architecture and policy
Identify enforcement points, trust boundaries and permitted actions.
Integration and tests
Implement the controls selected for your stack and test failure paths as well as allowed actions.
Controlled rollout
Observe first where appropriate; define enforcement criteria, rollback and change approval.
Handover
Configuration, test artefacts, runbooks and ownership of ongoing maintenance.
Scope and responsibilities
The scope identifies supported versions, engineering access, customer dependencies, test environments and acceptance criteria. Integration compatibility is established during discovery. A VPC, on-premises or isolated deployment is an architecture requirement to assess, rather than an automatic product option.
A practical example
For a network-change agent, enforce allowed targets and commands outside the model. Bind an approval to the proposed change, check it again at execution, and record the result. Rollback and emergency access need their own tested paths.
AI agent guardrails at the execution boundary
Guardrail engineering connects a security requirement to a control in the path of an action. A prompt can describe the intended behaviour; the tool or downstream service still needs to enforce the permission, target, argument and approval limits that protect the deployment.
We start with the systems the agent can affect. Depending on the agreed scope, this can mean scoped service identities, tool allowlists, argument validation, destination restrictions, approval bindings and decision records. Compatibility and implementation responsibilities are established during discovery.
Read why agent guardrails belong at the action boundary and how to design human approvals without fatigue.
Acceptance tests that demonstrate the control
For a refund tool, an acceptance test could show that an in-limit request proceeds, an over-limit request is held for the required approval, and an altered request cannot reuse the old approval. Test expiry, duplicate execution and unavailable policy dependencies as separate conditions.
For a data-export tool, test the permitted dataset and destination alongside denied records and destinations. Record which version and configuration produced the result. A positive response from the model is not evidence that the downstream action was restricted.
The acceptance criteria belong in the implementation scope before rollout. A failed or untested path remains visible in the handover record.
A staged route into operation
- Discover: confirm integration points, supported versions, dependencies and control ownership.
- Implement: build the agreed checks and connect identity, approval and logging paths.
- Validate: run authorised allowed-action and denied-action tests in a representative environment.
- Roll out: agree enforcement thresholds, change approval, monitoring and rollback.
- Hand over: deliver configuration, test artefacts and runbooks, with a clear owner for maintenance.
A security assessment can identify the initial gaps. Continuous assurance can scope retesting as tools and permissions change.
Engineering questions
Can controls integrate with our existing agent framework?
Discovery checks your framework, tool gateways, identity provider and deployment constraints. We agree the feasible integration points and versions before committing to implementation; support for every framework is not assumed.
Do guardrails guarantee that an agent is safe?
No single control removes every failure path. The work establishes agreed boundaries, tests them and records remaining limitations. Risk acceptance and independent assurance decisions remain with the responsible owners.
Turn security challenges into a clear plan
Tell us what you need to protect, improve or achieve. We will help you identify the control gaps, prioritise the work and define practical steps towards your goal.