* feat(observability): optional PostHog integration (errors, LLM traces, replay, flags)
Off by default. Activates when POSTHOG_API_KEY is set in env. Defaults
to PostHog Cloud EU; override host for US Cloud or self-hosted.
Coverage:
- FastAPI 500 handler captures unhandled exceptions
- src/orchestrator.py rebuild + rebuild_source failures
- services/scheduler/ HTTP-job failures
- cli/main.py uncaught CLI errors (Typer.Exit/SystemExit/KeyboardInterrupt
skipped; flushes before re-raise so short-lived CLI invocations don't
drop events)
- connectors/llm/anthropic_provider.py + openai_compat.py emit
$ai_generation events with provider, model, latency, token counts
(prompt/completion bodies stay off unless POSTHOG_LLM_PAYLOADS=1
because LLM prompts here routinely include customer SQL/data)
- Browser snippet injected into every text/html response by
PosthogInjectionMiddleware — registered inside the GZip layer so it
sees uncompressed HTML before compression. Many templates are
standalone (their own DOCTYPE) and never extend base.html, so a
per-template include would miss them.
- Frontend: $pageview, $pageleave, JS error capture via window.error
and unhandledrejection handlers, masked session replay
(maskAllInputs: true plus CSS-selector mask for known data surfaces),
feature flags (browser posthog.isFeatureEnabled + server-side
feature_enabled with fallback for older SDKs).
Identification mode operator-configurable: none / id / email / full.
Default email ships user.id + email but never name. CLI entry point
moves from cli.main:app to cli.main:main (Typer wrapper).
Files:
- src/observability/posthog_client.py — lazy singleton, no network
when disabled, single-process flush on shutdown
- src/observability/llm_tracing.py — trace_generation context manager
- app/middleware/posthog_inject.py — HTML rewrite middleware
- app/web/templates/_posthog.html — browser snippet template
- docs/observability.md — operator guide
- config/.env.template — documented POSTHOG_* knobs
- tests/test_posthog_disabled.py + tests/test_posthog_client.py +
tests/test_llm_tracing.py — 18 tests covering disabled state,
identify-mode payloads, $ai_generation shape, error variant.
CHANGELOG entry under [Unreleased] Added.
* feat(observability): tag every PostHog event with environment + release
Splits PostHog dashboards cleanly between localhost / dev / staging /
production without manual tagging on every capture call.
- POSTHOG_ENVIRONMENT explicit override; auto-resolves to "local" when
LOCAL_DEV_MODE=1, else RELEASE_CHANNEL, else AGNES_DEPLOYMENT_ENV,
else "unknown".
- AGNES_VERSION → RELEASE_CHANNEL fallback feeds the `release` property
for "is this error new in this release?" cohorting.
- Backend gets both via the PostHog SDK's super_properties constructor
arg (every captured event picks them up automatically).
- Browser snippet calls posthog.register({environment, release}) inside
the loaded callback so $pageview, $exception, autocapture, etc. all
carry the same labels.
- request.state.user now populated by auth dependencies so the snippet
can actually call posthog.identify(user_id, {email}) for logged-in
users (previously the user block always resolved to None because
nothing wrote to request.state.user).
4 new tests cover env resolution: explicit > LOCAL_DEV_MODE > channel
> unknown, plus super-properties forwarding into the SDK constructor.
* feat(observability): inline user attrs on every PostHog event + debug throw route
PostHog's UI shows person properties on the Person profile page, not
inline on each event — so a reviewer triaging an exception couldn't tell
which user hit the bug without clicking through. Fix it on both sides.
- Backend capture_exception merges user_id / user_email / user_name into
the event properties (gated by POSTHOG_IDENTIFY_PII: none/id/email/full).
Backed by a new _user_props_for_event helper on PosthogClient.
- Browser snippet registers user_id + user_email + user_name as super-
properties via posthog.register({...}) so every $exception, $pageview,
and custom event coming from posthog.captureException() carries them
inline. Mirrors the backend so cross-referencing client/server events
doesn't require a person-profile lookup.
- /api/debug/throw — debug-only endpoint gated by DEBUG=1 (404 in prod).
Runs Depends(get_current_user) first so request.state.user is set when
the unhandled-exception handler captures the event. Lets operators
exercise the full observability path end-to-end without hand-rolling
a TestClient script. Configurable via ?kind=ValueError&msg=...
7 new tests cover: backend user-attr merge across identify modes,
anonymous request fall-through, browser snippet super-prop emission for
logged-in / anonymous / id-only / full-name cases.
* fix(observability): address minasarustamyan PR #231 review
Two bugs caught in review.
1. PosthogInjectionMiddleware dropped Response.background on every
return path. BaseHTTPMiddleware materialises the body and asks
subclasses to return a fresh Response — three paths in dispatch()
omitted background=, silently cancelling any BackgroundTask /
BackgroundTasks the route attached (audit logging, async webhooks,
email sends) with no log line. Fix: route every return through a
_passthrough() helper that forwards background.
Also adds a _MAX_BUFFER_BYTES (4 MB) cap so a streamed-HTML response
can't balloon RSS during buffering. Bigger bodies short-circuit
through with a warning rather than being injected.
Regression tests in tests/test_posthog_inject_middleware.py exercise
four return paths (snippet present, render-fail, double-injection
guard, non-HTML passthrough) plus the streaming-guard short-circuit.
2. $ai_input / $ai_output_choices were emitted without truncation, so
POSTHOG_LLM_PAYLOADS=1 silently dropped events past PostHog's ~32 KB
per-event ingest limit — exactly the calls (large prompts with
schemas / sample rows / SQL) an operator would want to inspect.
Fix: clip both at POSTHOG_LLM_PAYLOAD_MAX_CHARS (default 30000) with
an explicit "…[truncated N chars]" marker so readers don't mistake
truncated captures for complete ones. Metadata (provider, model,
tokens, latency, error) flows regardless. Three new tests cover
default-cap clipping, env-override, and pass-through under the cap.
37 PostHog tests pass.
E2E test on a real BQ deploy showed every verification-extraction call
fails with HTTP 400 invalid_request_error: "output_config.format.schema:
For 'object' type, 'additionalProperties' must be explicitly set to false".
The Anthropic structured-output API now requires the field on every object
node in the json_schema. Fix: connectors/llm/anthropic_provider.py wraps
the caller-supplied schema through a recursive _strict_json_schema()
walker that adds the field where missing (preserving any explicit
override), then passes the strict variant to the API. Six unit tests in
TestStrictJsonSchema pin the recursion across nested objects, array items,
and the no-mutation invariant.
Adds /admin/scheduler-runs — a read-only admin page that surfaces the
last 200 audit-log entries from scheduler-driven actions. New
AuditRepository.query_actions(actions, limit) helper, new admin nav
entry. Failed scheduler ticks (HTTP 401, network errors) don't reach
the audit_log; the page calls that out with a hint to set
SCHEDULER_API_TOKEN if no rows show up.
Replace hardwired Anthropic API calls with a pluggable provider system.
Each deployment configures its AI provider in instance.yaml — switching
between Anthropic, LiteLLM, OpenRouter, or any OpenAI-compatible proxy
is a config change, not a code change.
New connectors/llm/ module:
- StructuredExtractor Protocol with extract_json() interface
- AnthropicExtractor: direct Anthropic SDK with retry + backoff
- OpenAICompatExtractor: any OpenAI-compatible proxy with three-layer
structured output fallback (json_schema -> json_object -> prompt)
- Configurable structured_output policy (strict/json/auto)
- Custom exception hierarchy (auth/rate_limit/timeout/format/refusal)
- Zero secrets in logs: no API keys, prompts, or responses logged
Reviewed by: Google Gemini, Claude Sonnet, OpenAI GPT-5.4.
Security audit passed with all critical findings resolved.
Vojtech