9Router: evaluate an AI gateway without assuming unlimited access
Operate 9Router with approved credentials and bounded retries
Protect gateway access, proxy assumptions and diagnostic records without using account rotation as a substitute for authorization.
What you will learn
- Keep account use authorized
- Enforce the proxy assumption
- Handle failures without loops
Before you start
- Basic command-line and configuration reading
- Ability to work in a disposable authorized environment
Design an evidence record that separates requested model, actual attempts and accepted response without retaining secrets.
Key takeaways
- Routing does not override account rules.
- A trusted local proxy must supply clean headers.
- Authentication failures need diagnosis, not endless retries.
Keep account use authorized
Use provider integrations and credentials allowed for your account. Routing, fallback and multi-account features do not waive provider restrictions. Stop at an authorization or quota boundary instead of treating another account as an automatic workaround.
Protect both gateway access and upstream credentials. A locally running proxy can still expose secrets through logs, backups or an unexpectedly public listener. Review those surfaces before connecting real development data.
Enforce the proxy assumption
The custom wrapper trusts forwarding information from loopback peers. A local reverse proxy must therefore strip untrusted client values and set its own. A misconfigured proxy can pass attacker-controlled information into a trusted branch.
If the proxy is not loopback, inspect how downstream rate limits and logs see the derived address. Do not modify trust rules blindly to make a test pass. Document the actual network topology and test it under the production entry point.
Handle failures without loops
Set a bounded retry and fallback policy supported by the chosen deployment, and keep a stop procedure. An authentication failure should lead to account diagnosis, not an unbounded retry storm across unrelated providers.
Preserve sanitized route and error evidence before changing configuration. Revoke affected credentials through their owners and restore only reviewed settings. This series did not perform penetration testing or verify every provider integration.
Decision guide
| Criterion | Option A | Option B |
|---|---|---|
| Best when | You need predictable behavior and easy auditing | You need adaptive optimization and have reliable telemetry |
| Main risk | May leave performance on the table | Can become difficult to explain or debug |
Implementation steps
- 1
Confirm permitted provider use and data destinations.
- 2
Verify local proxy stripping and listener access.
- 3
Bound failure handling and preserve sanitized evidence.
Copy-ready example
{
"policyExample": true,
"authorizedProvidersOnly": true,
"publicDashboard": false,
"shareProviderSecrets": false,
"unboundedRetries": false
}Frequently asked questions
Can fallback bypass a provider restriction?
This series only covers authorized routes and does not recommend bypassing restrictions.
Is localhost alone a complete security policy?
Also review bindings, proxy paths, credentials, logs and backups.
Sources
- 9Router / README.mdSource checked 2026-09-18
- 9Router / custom-server.jsSource checked 2026-09-18