## Problem
Centralized requests recorded *the first available key from the pool at
`CreateInterceptor` time* as `credential_hint`, so the interception
could be persisted in the database with a hint that didn't match the key
that actually served the request. The fix consists in storing, at
end-of-interception, the hint of the key that succeeded, or the last
attempted key if all keys are unavailable.
## Changes
- Add `Key.Hint()` and update `credential_hint` on every failover
attempt so it reflects the actually-used key.
- Stop pre-populating `credential_hint` at `CreateInterceptor`.
Centralized starts empty and is updated by the key failover loop.
- Persist the final hint via `RecordInterceptionEnded`; SQL updates
`credential_hint` only when `credential_kind = 'centralized'` so BYOK
keeps its start-time value.
- Log the actually-used hint on interception end/failure; start log uses
a `<keypool-pending>` placeholder for centralized.
> [!NOTE]
> Initially generated by Claude Opus 4.7, modified and reviewed by
@ssncferreira
_Disclosure: created with Coder Agents._
When providers are disabled, we should serve a sentinel error so the
requesting client (Claude Code, Coder Agents, etc) is informed. Coder
Agents can also conditionalize its display to show a helpful error
message.
---------
Signed-off-by: Danny Kopping <danny@coder.com>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Add metrics for `aibridged` and `aibridgeproxyd`'s provider statuses. AI providers can be modified, and possibly misconfigured, at runtime. These metrics help operators understand the state of these provider definitions in case unexpected behaviour is observed.
Previously the in-process aibridge daemon and the enterprise aibridgeproxy daemon both snapshotted their provider routing once at boot. Any `ai_providers` or `ai_provider_keys` mutation required a restart for either to pick it up.
Add an `ai_providers_changed` pubsub channel that the CRUD handlers publish on after Create / Update / Delete. Both daemons subscribe:
- **aibridged** rebuilds its `[]aibridge.Provider` snapshot via `BuildProviders` and swaps it into the pool atomically. Inflight requests keep serving against the bridge they already acquired; new acquires build against the new snapshot. Per-provider construction errors stay scoped to the offending row.
- **aibridgeproxyd** rebuilds its routing snapshot from `GetAIProviders` and swaps the host→provider map atomically. The MITM listener picks up new providers without restart.
DB read for aibridgeproxyd uses the existing `AsAIProviderMetadataReader` subject for routing-only access.
Previously we were only extracting the API when _not_ delegating auth;
this is incorrect.
We need to extract the key _always_ when BYOK is intended.
---------
Signed-off-by: Danny Kopping <danny@coder.com>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Allows an `api_key_id` to be passed from a trusted in-memory transport
(currently: `chatd`) to `aibridged` for use in authenticating LLM
requests.
This value can _only_ be passed via context, and all users of the
in-memory transport _must_ provide it.
It can be used in conjunction with BYOK headers.
---------
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
### TL;DR
Introduces an in-process `TransportFactory` for aibridge so that chatd (coder-agent LLM traffic) can route requests through the aibridged handler without crossing the HTTP route or requiring a license entitlement check.
### What changed?
- Added a new `coderd/aibridge` package with a `TransportFactory` interface and a `Source` type for tagging the call site on request contexts. `SourceAgents` is defined as the constant for coder-agent traffic.
- Implemented `NewTransportFactory` in `coderd/aibridged/transport.go`, which returns an `http.RoundTripper` that dispatches requests to the aibridged handler in-process. The response body is streamed through an `io.Pipe` so SSE/NDJSON/chunked responses propagate token-by-token. Handler panics are recovered and surfaced as 500 responses, and context cancellation closes the pipe with the appropriate error.
- `RegisterInMemoryAIBridgedHTTPHandler` now also constructs a `TransportFactory` from the registered handler and stores it on `API.AIBridgeTransportFactory` (an `atomic.Pointer`), making it available to chatd without going through the license-gated HTTP route.
- Added `API.AIBridgeTransportFactory` as a public `atomic.Pointer[aibridge.TransportFactory]` field on `coderd.API`.
### How to test?
- `coderd/aibridged/transport_test.go` covers: transport creation, nil-handler errors, source attachment to context, header/status passthrough, streaming (SSE-style chunked writes visible before handler completion), context cancellation closing the body with an error, concurrent requests, handler panics producing 500s, and handlers that return without writing.
- `coderd/aibridge_test.go` verifies that `AIBridgeTransportFactory` starts as nil on AGPL coderd, can be stored and loaded atomically, and that the stored factory correctly dispatches requests through the stub handler.
### Why make this change?
Chatd needs to send LLM requests through aibridge in-process rather than via the external HTTP route, which is license-gated. The `TransportFactory` abstraction provides a clean seam: the entitlement check remains on the HTTP route for external callers, while in-process coder-agent traffic bypasses it through the factory. The `Source` type allows downstream handlers and logs to attribute traffic without gating behavior on the caller identity.
In order to allow Coder Agents to use AI Gateway in OSS, we need to rehome the `aibridged`\-related code into the AGPL path.
The HTTP API is only registered under enterprise so will still require the AI Governance Add-on to be present in order to use it, whereas Coder Agents uses an in-memory pipe to the same handlers.
Susana Ferreira