Session recording for MCP servers on AWS

Why session recording matters for MCP servers on AWS

Many assume that session recording for AI‑driven MCP servers can only be added after the service is deployed, but the recording must be baked into the data path from the start. Without a recording layer, every command, query, and response that flows between an operator and an MCP instance disappears the moment the connection closes. That loss of visibility makes forensic analysis, compliance reporting, and post‑mortem debugging virtually impossible.

In most organizations, engineers launch MCP servers on AWS and connect directly using standard client tools. The connection is authenticated via an OIDC token, and the AWS credential lives on the host or in an environment variable. The operator can issue any command the server accepts, and the response streams back unfiltered. No central point intercepts the traffic, so there is no guarantee that a privileged action was performed by an authorized identity, nor is there any immutable log of what data was returned.

What the current setup fixes – and what it still leaves open

Introducing OIDC‑based identity and just‑in‑time (JIT) access improves who can start a session, but the request still travels straight to the MCP endpoint. The gateway that could enforce policies is missing, so the system lacks three critical capabilities:

• Recording of every byte that passes through the connection, creating a replayable audit trail.
• Inline masking of sensitive fields in responses, preventing accidental exposure of secrets.
• The ability to pause or reject dangerous commands before they reach the server.

These gaps exist because enforcement must happen where the traffic is observable – in the data path – not merely at the identity layer.

How hoop.dev provides the missing data‑path enforcement

hoop.dev is a Layer 7 gateway that sits between the operator’s client and the MCP server running on AWS. The gateway runs a lightweight agent inside the same network as the server, holds the AWS credential, and proxies the connection. Because every packet passes through hoop.dev, it can apply session recording, inline masking, and command‑level guardrails in real time.

When a user authenticates via OIDC, hoop.dev validates the token, extracts group membership, and decides whether the user may start a session. Once the session is allowed, the gateway streams the traffic and writes a complete record of the interaction to a secure store. The record includes timestamps, the identity of the requester, and the full command‑response exchange, enabling replay and forensic analysis.

Because the gateway owns the credential, the operator never sees the raw AWS key. This isolation prevents credential leakage and ensures that all access is mediated by hoop.dev’s policy engine.

Design considerations for AWS environments

In AWS, MCP servers often run behind VPC endpoints or within private subnets. Deploying hoop.dev’s agent inside the same subnet guarantees that traffic never leaves the VPC, preserving network isolation while still capturing the session. When you run many MCP instances, a single hoop.dev gateway per availability zone can proxy multiple connections, aggregating recordings centrally and simplifying retention policy management.

Regulators that require traceability, such as SOC 2 auditors, look for immutable logs of privileged actions. hoop.dev’s recordings satisfy that need without requiring custom logging inside the MCP application. The recorded sessions can be replayed through hoop.dev’s web console, where you can step through each command, filter by user, and export the transcript for audit reports.

Getting started quickly

To try this flow, follow the getting‑started guide. The guide walks you through deploying the gateway with Docker Compose, registering an MCP server as a connection, and configuring OIDC authentication. Once the gateway is running, connect to the MCP server using your usual client – the traffic will be automatically recorded.

For a deeper dive into the feature set, explore the learn section, which explains masking policies, approval workflows, and session replay tooling.

Frequently asked questions

Does session recording add latency to MCP interactions?

hoop.dev records traffic at the protocol layer, which adds only a minimal amount of processing time. In practice the latency is indistinguishable from a direct connection, while providing a complete audit trail.

Can I retrieve a recorded session after the fact?

Yes. Recorded sessions are stored in a secure location defined during deployment. You can search by user, time range, or resource, and replay the exact command‑response sequence through the UI or API.

Is the recorded data encrypted?

The recording store is configured with encryption at rest by default. Access to the recordings is controlled by the same OIDC policies that govern live sessions, ensuring that only authorized personnel can view them.

How long are recordings retained?

Retention is defined by your organization’s policy. hoop.dev lets you set a retention period when you configure the storage backend, after which recordings are automatically purged.

Next steps

Visit the GitHub repository to explore the source code, contribute enhancements, or file issues. The repository includes the Docker Compose files, Helm charts, and detailed documentation to help you integrate session recording for MCP servers on AWS into your production environment.