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AI Gateway Changelog

Release date: 2026-10-29
Previous version: 2026.09.24 (2026-09-24)

New feature additions

  • TypeSafe Jev guardrails: Five new policies use a TypeSafe Jev endpoint to screen request and response content, pick the model from plain-language rules, and trim the tool list sent to the LLM. For MCP traffic, they check tool calls against the agent's scope and screen tool results for injected instructions. See New policies.
  • Semantic caching admission check: The semantic-cache policy (v1.2.1) can use an optional TypeSafe Jev check to decide which responses to cache.
  • Bedrock file attachments: The OpenAI to Bedrock Transformer policy (v0.9.3) forwards PDF, Word, Excel, CSV, HTML, text and Markdown attachments to AWS Bedrock. It returns 400 for an attachment it can't forward, instead of silently dropping it.
  • Bedrock guardrail by status code: The AWS Bedrock Guardrail policy (v1.3.0) can be limited to chosen upstream status codes with applicableStatusCodes.
  • Fault policies: Attach policies that run only when a request fails to LLM providers, LLM proxies, MCP proxies and A2A agents.
  • A2A agents from the control plane: Agent proxies can be deployed from the control plane, and Agent keys are included in key synchronization. Agent Card interface URLs can use http://.
  • Mutual TLS: The new mtls-auth policy authenticates clients by certificate, and a tls block on an upstream sets the client certificate the gateway presents to that provider or backend. Certificates can be rotated in place through the certificate management API.
  • Request IDs in responses: Every response carries an x-request-id header that matches the gateway's logs and analytics.
  • OpenShift support: The gateway images run under arbitrary user IDs, and the Helm chart can create OpenShift Routes. For more information, see OpenShift standalone deployment.

New policies

See Policy Hub for policy references.

Changed

  • New defaults: Each of these is on by default. To keep the previous behavior, set it to false.
    • [router.upstream.tls] present_default_identity: the gateway presents its default client certificate to backends that request one.
    • [router.http_listener] return_request_id_in_response: responses carry x-request-id, replacing any value a backend or policy set.
    • [signing] jwks_endpoint_enabled: /.well-known/jwks is served on every host, ahead of any API on that path.
  • Analytics and traffic logging keep up under constrained CPU, and repeated headers keep every value.
  • Upgrading: SQLite databases from 2026.09.24 are migrated automatically. For PostgreSQL or SQL Server, re-run the scripts in resources/gateway-controller/db-scripts before you start the new version. For Helm upgrades, use --reset-then-reuse-values (Helm 3.14 or later) or pass your values file, not --reuse-values.
  • Platform updates: Envoy v1.39.6, with updated Go dependencies and OS packages.

Fixed

  • Fixed MCP proxies that use the legacy header authentication type: it is now normalized to api-key (#3589).
  • Fixed analytics-header-filter not applying to response headers: it now filters them when response-header capture is on, and headers it removes no longer reach analytics (#3530).
  • Fixed analytics events with multi-value headers not reaching OpenTelemetry backends (#3608).
  • Fixed the gateway operator not redeploying a failed gateway after a configuration change (#3509).
  • Fixed gateways with long names failing to deploy through the operator: the Helm release name is now bounded so derived Service names fit (#3566).