LlamaIndex Agent Telemetry: from boundary to verified row
Use LlamaIndex Agent Telemetry at a controlled application boundary, keep the event contract small, and verify a known outcome before building aggregate views.
- 1
Choose the outcome
LlamaIndex agent monitoring
- 2
Define the contract
run_id, workflow, agent_name, model_alias, index_version, prompt_version, and release
- 3
Instrument the boundary
Wrap the public agent.run or workflow boundary and emit one terminal application outcome after the handler completes.
- 4
Verify the evidence
Exercise a known fixture, then inspect agent_run_completed for one correctly typed terminal row.
Before you start
Prerequisites and boundaries
- LlamaIndex and telemetry-sh initialized in a trusted Python process
- An application-owned run ID plus stable workflow, agent, index, and release versions
- A reviewed policy for prompts, outputs, retrieved nodes, tool arguments, and trace content
Delivery setup
Install and initialize server-side
Initialize Telemetry for synchronous code or TelemetryAsync for asyncio code once per process with a server-side key. Keep ingestion credentials out of browser bundles, client-visible environment variables, source control, logs, and exception messages.
pip installation
python -m pip install telemetry-sh- 1Prepare one reusable server-side delivery client with bounded network behavior.
- 2Add the outcome event at the success, failure, retry, or timeout boundary.
- 3Send controlled fixtures and inspect the stored rows before enabling an alert.
Snippet
Start with one structured event
Add this shape where the workflow completes, fails, or retries. Then build the dashboard from real fields.
LlamaIndex Agent Telemetry event
from time import perf_counter
async def run_support_agent(agent, user_message: str, run_id: str):
started_at = perf_counter()
status = "success"
error_type = None
try:
return await agent.run(user_msg=user_message)
except Exception as error:
status = "failed"
error_type = classify_agent_error(error)
raise
finally:
await telemetry.log("agent_run_completed", {
"run_id": run_id,
"workflow": "support_resolution",
"agent_name": "llamaindex_support_agent",
"status": status,
"error_type": error_type,
"duration_ms": round((perf_counter() - started_at) * 1000),
"index_version": INDEX_VERSION,
"prompt_version": PROMPT_VERSION,
"release": APP_RELEASE,
})Event contract
run_id, workflow, agent_name, model_alias, index_version, prompt_version, and release
status, duration_ms, tool_call_count, retry_count, human_handoff, and error_type
estimated_cost_usd, accepted, evaluation_score, evaluator_version, and environment when approved
Implementation checkpoints
Checkpoint 1
Wrap the public agent.run or workflow boundary and emit one terminal application outcome after the handler completes.
Checkpoint 2
Use LlamaIndex workflow events and instrumentation for step-level inspection; send only the aggregate fields needed for a reviewed SQL question to Telemetry.
Checkpoint 3
Do not serialize prompts, agent messages, retrieved nodes, embeddings, tool inputs, tool outputs, or exception messages into the event.
Verification
Prove the event arrived
Run this after exercising known success and failure cases. Replace the fallback table name if your final event contract differs from the snippet.
LlamaIndex Agent Telemetry verification query
SELECT *
FROM agent_run_completed
ORDER BY timestamp_utc DESC
LIMIT 20;Implementation references
Review the event contract, data-safety guidance, and upstream primary documentation before enabling a new production path.
Production boundary
Keep the outcome event small and recoverable
This pattern provides
- A bounded, SQL-ready outcome beside the upstream workflow.
- Stable fields for dashboards, alerts, and cross-event correlation.
- A fixture-driven path for validating success, failure, retry, and timeout behavior.
This pattern does not provide
- An OTLP exporter, automatic collection pipeline, or replacement for detailed traces and diagnostic logs.
- Exactly-once delivery merely because the payload contains an event ID.
- Permission to collect raw provider payloads, user content, credentials, or regulated data.
Event schema starting points
Event contracts for this workflow
Review the row grain, emit boundary, required types, privacy classes, example payload, and validation checklist before adapting a query or snippet to production.
llm_request_completed
One completed model-provider request.
Inspect contractai_agent_run_completed
One terminal outcome per logical agent run.
Inspect contractagent_tool_call_completed
One completed tool-call attempt within an agent run.
Inspect contractRelated product capability
Continue this workflow in AI agent monitoring
Connect agent runs, tool use, model cost, quality, and product outcomes with reviewable SQL.
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