[proxy,management] Conform the Agent Network endpoint to the LLM gateway protocol
Reviewed the proxy against Claude Code's published gateway contract. The
transport layer already held up; fourteen gaps sat one layer up, in the model
catalog and in the non-inference endpoints clients call.
Two of them cost money. The catalog carried no claude-opus-5 or
claude-sonnet-5, so an operator could not authorise the models coding agents
default to — those requests denied as not-routable, or priced at zero where a
catch-all carried them. And gateway records pin ParserID "openai" while the
same record serves /v1/messages, so Anthropic responses were read with the
OpenAI parser, which never looks at message_start where input tokens live:
input metered as roughly zero on every stream and cost was skipped entirely.
The rest fix requests refused for structural rather than policy reasons: model
discovery denied for every account with a model allowlist, token counting
denied on Bedrock and mis-parsed on Vertex, startup probes refused and written
into the access log at every session start, and denials rendered in a shape no
LLM client parses. Two changes are additive by design — the deny body keeps
every field it had and adds the vendor's error object alongside, and body-level
identity injection is now gated on the request's dialect so it stops sending
OpenAI-shape fields into Anthropic bodies that reject them.
The end-to-end work turned up one more: the discovery filter treated any slash
in a model id as a gateway prefix, which would have dropped every self-hosted
"Qwen/..." model from the picker.
The usage overview and access-log listings no longer deny callers without
the account-wide grant: the filter is pinned to the caller (their own
user id, group filters dropped), so every authenticated user reads their
own usage and requests through the same endpoints the admin dashboard
uses. The dedicated /agent-network/me/usage/overview endpoint is removed
in favor of that fallback.
usage_viewer gains read-only access to the resources the usage view's
filters and columns resolve against: users, groups, peers, and the
provider list (provider and model filter options).
Field testing the role surfaced two gaps. GET /api/accounts validates
Settings read (the settings manager gates account settings), so an
agent_network_admin got permission denied on the endpoint the dashboard
needs to boot; grant Settings read-only, the same as network_admin.
The me/consumption endpoint returned raw per-window counter rows, which
reads nothing like the usage overview admins see. Replace it with
GET /api/agent-network/me/usage/overview: the same filter parsing,
bounds, granularity, and bucket aggregation as the admin overview, with
the user filter forced to the caller and group filters dropped, so the
dashboard renders My Usage with the exact component of the admin view
while never exposing another user's rows.
Delegating Agent Network today means handing out full account admin, and
regular users cannot see their own usage or how to connect a local tool.
Add two roles on top of the existing agent_network permission
submodules. agent_network_admin owns the whole area (providers,
policies, guardrails, budgets, usage, logs, settings) with read-only
users, groups, peers, and account info needed to build policies, and
nothing else in the account. usage_viewer is the regular User baseline
plus read on the aggregated usage and cost overview: no provider
configuration, no policies, no request-level logs, which can contain
captured prompts. billing_admin gets a proper permission-map entry with
the User baseline so role resolution stops failing with role-not-found;
its plan and invoice permissions stay enforced cloud-side.
Add the self-service endpoints behind the "My Agent Network" view,
available to every authenticated user because both answers are scoped
strictly to the caller. GET /api/agent-network/me/setup returns the
account endpoint plus the providers and models the caller's own groups
authorize, computed with the same rules the proxy enforces: policy
filtering as in policy selection, model allowlist union intersected
with declared models, orphan and disabled providers omitted. Not set up
and no access are deliberately indistinguishable, and the response
carries display metadata only. GET /api/agent-network/me/consumption
returns the caller's own user-dimension counters.
Linear: NET-1399
