Maple agent tracing for Agno

Goal: every conversation with the Agno app shows up in Maple Agent Sessions as exactly one session, one turn per run(), with transcript, model calls, tool calls (failures marked), team-member lanes, tokens and cost where the provider returns it.

Mechanism: openinference-instrumentation-agno + OTel SDK + OTLP/HTTP exporter to Maple. Agno's setup_tracing(db=...) and AgentOS(tracing=True) only write to the AgentOS database; they never export OTLP.

Step 0: Detect versions and existing setup

1. Find the Python project file (pyproject.toml, requirements*.txt, uv.lock, poetry.lock) and the installed agno version. Target agno>=3.0 (verified 3.0.11). On Agno 2.x, openinference-instrumentation-agno needs agno>=2.5.0; the rest of this skill applies unchanged.
2. Grep for existing tracing: TracerProvider(, set_tracer_provider, AgnoInstrumentor, setup_tracing(, tracing=True, phoenix.otel.register, openlit.init, logfire.configure, langfuse, OpenAIInstrumentor, LiteLLMInstrumentor.
   • Existing TracerProvider of the app's own: reuse it. Add a BatchSpanProcessor(OTLPSpanExporter(...)) for Maple to it. Do not create a second provider.
   • Existing AgnoInstrumentor().instrument(...): edit that call (add config=); never call instrument() a second time (the second call is a silent no-op).
   • AgentOS(tracing=True) or setup_tracing(db=...): see Step 2c.
   • Any other LLM instrumentor on the same calls (OpenAI/LiteLLM OpenInference instrumentors, OpenLIT, register(auto_instrument=True)): remove it or scope it away from Agno, or every model call is recorded twice.
3. Find every place an Agent, Team or Workflow is run: .run(, .arun(, .print_response(, .aprint_response(, .continue_run(, .acontinue_run(. Note where the conversation/thread id lives in the request.

Step 1: Key and region

• US: https://ingest.maple.dev. EU: https://ingest.eu.maple.dev.
• Header: Authorization=Bearer <key>. Protocol http/protobuf.
• Key in the user's prompt: use it. No key: use the literal MAPLE_TEST (ingest accepts and discards it) and tell the user to replace it with their key from Settings → Ingestion.
• Private maple_sk_ keys never go in browser code. Agno runs server-side; a maple_pk_ ingest key is write-only.
• Follow the repo's existing secret/env convention (.env, settings module, secret manager). If there is none, inline is acceptable because ingest keys are write-only.
• App loads .env (load_dotenv()): call it at the top of tracing.py, before the provider is built. Otherwise the exporter silently targets localhost:4318 with no key.
• Key missing: instrumentation must never crash or block the app. In tracing.py, after any load_dotenv(), when OTEL_EXPORTER_OTLP_HEADERS is unset, log one warning (logging.getLogger(__name__).warning("OTEL_EXPORTER_OTLP_HEADERS (Maple ingest key) is not set; Maple telemetry export is disabled")) and skip the provider and exporter setup. Never raise or exit over the key, and never send a header without one (opaque 401).

Step 2: Install and initialize

2a. Packages

Add to the project's dependency file with its package manager (uv/poetry/pip):

agno>=3.0
openinference-instrumentation-agno>=1.0.10
opentelemetry-sdk
opentelemetry-exporter-otlp-proto-http

>=1.0.8 is required for human-in-the-loop continue_run() spans; 1.0.10 adds llm.cost.total. If the app uses SqliteDb/AsyncSqliteDb and imports fail with "requires ... 'greenlet'", add greenlet (and aiosqlite or agno[sqlite]).

2b. Environment

OTEL_SERVICE_NAME=<service name, e.g. support-agent>
OTEL_RESOURCE_ATTRIBUTES=deployment.environment.name=<env>
OTEL_EXPORTER_OTLP_ENDPOINT=https://ingest.maple.dev     # EU: https://ingest.eu.maple.dev
OTEL_EXPORTER_OTLP_HEADERS="Authorization=Bearer <key>"
OTEL_EXPORTER_OTLP_PROTOCOL=http/protobuf
AGNO_TELEMETRY=false

The exporter appends /v1/traces to OTEL_EXPORTER_OTLP_ENDPOINT. If you use OTEL_EXPORTER_OTLP_TRACES_ENDPOINT instead, give the full .../v1/traces URL.

2c. Tracing module

Create tracing.py (or add to the app's existing observability module):

from openinference.instrumentation import TraceConfig
from openinference.instrumentation.agno import AgnoInstrumentor
from opentelemetry import trace
from opentelemetry.exporter.otlp.proto.http.trace_exporter import OTLPSpanExporter
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import BatchSpanProcessor

provider = TracerProvider()  # resource from OTEL_SERVICE_NAME / OTEL_RESOURCE_ATTRIBUTES
provider.add_span_processor(BatchSpanProcessor(OTLPSpanExporter()))
trace.set_tracer_provider(provider)

AgnoInstrumentor().instrument(
    tracer_provider=provider,
    config=TraceConfig(enable_genai_semconv=True),
)

• enable_genai_semconv=True is REQUIRED. Env equivalent: OPENINFERENCE_ENABLE_GENAI_SEMCONV=true (use it when you can't edit the instrument() call, e.g. AgentOS owns it).

• Import tracing at the top of the entry point (main.py, app.py, the ASGI module), before building agents, teams or AgentOS.

• AgentOS: AgentOS(tracing=True) and setup_tracing(db=...) skip their setup when a real TracerProvider is already registered, so AgentOS's traces view stops getting spans once tracing.py runs first. If the user wants to keep that view, add Agno's DB exporter to the same provider (use the db the AgentOS uses):

  from agno.tracing.exporter import DatabaseSpanExporter
  provider.add_span_processor(BatchSpanProcessor(DatabaseSpanExporter(db=db)))

  If setup_tracing/tracing=True must run first instead, don't create a provider: call trace.get_tracer_provider().add_span_processor(BatchSpanProcessor(OTLPSpanExporter())) after it and set OPENINFERENCE_ENABLE_GENAI_SEMCONV=true in the environment before the process starts.

Step 3: Session id (one conversation = one session)

• Pass session_id=<conversation id> on EVERY run, arun, print_response, aprint_response, continue_run, acontinue_run, and on team.run/arun and workflow.run/arun. Use the id the app already stores for the chat/thread; pass user_id= too if available.
• Without session_id=, Agno mints a uuid4() on the first run and stores it on the Agent/Team instance; every later run of that instance reuses it. A module-level shared agent then merges all users into one session. Fix it; don't rely on the default.
• Do not mint a new id per request (every turn becomes its own session).
• Team members inherit the team's session id automatically. Do not pass a different id to members.
• Do not add using_session() or a custom span processor for the session; Agno's run span already carries it.
• If the Agent has a db, session_id also selects the stored history: keep them the same id.

Step 4: Content

• Content capture is ON by default in OpenInference. With Step 2c, prompts/replies land in gen_ai.input.messages / gen_ai.output.messages on span attributes. Nothing else to enable.
• If the user asks for no content / PII-sensitive: set before start OPENINFERENCE_HIDE_INPUT_MESSAGES=true, OPENINFERENCE_HIDE_OUTPUT_MESSAGES=true, OPENINFERENCE_HIDE_INPUTS=true, OPENINFERENCE_HIDE_OUTPUTS=true. Tell them the transcript will be empty but tokens/tools/failures remain, and that tool ARGUMENTS (tool.parameters, gen_ai.tool.call.arguments) are NOT masked by any of these variables; dropping them needs an OTel Collector redaction/transform processor.
• Tool results are recorded as str(result) (the same string Agno sends to the model). A tool returning a dict/list produces a Python repr ({'city': 'Berlin'}), which is not JSON, so Maple shows plain text. Recommend returning json.dumps(...) from structured tools; tell the user rather than silently changing tool return types.

Step 5: Tools, errors, sub-agents

• Tool spans are named after the function and carry gen_ai.tool.name, arguments and result. A tool that RAISES gets status ERROR with the exception message; Maple counts it as failed. A tool that RETURNS an error string counts as success. If the user's tools swallow errors into strings, point this out; don't change behavior unasked.

• Give every Agent and Team a name= (distinct per member). Unnamed ones produce Agent.run/Team.run spans with no gen_ai.agent.name, and Maple can't draw a lane for them.

• Teams: one trace per team run. Member runs (<member>.arun) are children of the team run span, siblings of the leader's delegate_task_to_member tool spans (not nested inside them). Maple draws a lane per named member. Nothing to add.

• Team context leak (instrumentor 1.0.10): after team.run()/team.arun() returns, the team span stays attached to the thread/task, so any LATER agent run in the same thread/task nests into the finished team trace. Per-request tasks/copied contexts (FastAPI, Starlette) are unaffected. In scripts, loops, workers, CLIs and tests, isolate each team run:

  result = await asyncio.create_task(team.arun(prompt, session_id=conversation_id))      # async
  result = contextvars.copy_context().run(team.run, prompt, session_id=conversation_id)  # sync

  Plain Agent runs (sync, async, streamed) do not leak.

• Human-in-the-loop (@tool(requires_confirmation=True) → requirement.confirm()/reject() → agent.continue_run(run_id=..., requirements=..., session_id=...), agent needs a db):

  response = agent.run(message, session_id=conversation_id)
  if response.is_paused:
      for requirement in response.active_requirements:
          requirement.confirm()  # or requirement.reject(note="...")
      response = agent.continue_run(
          run_id=response.run_id, requirements=response.requirements, session_id=conversation_id
      )

  The resumed run is its own trace with a <agent>.continue_run span carrying session.id, so it joins the session as a second turn. Needs instrumentor >=1.0.8 and session_id= on continue_run.

Step 6: Flush

• Long-running server (FastAPI, AgentOS): nothing to add; TracerProvider flushes at normal exit.

• Script / CLI / worker: wrap the entry point:

  from tracing import provider
  try:
      main()
  finally:
      provider.force_flush()
      provider.shutdown()

• Took the setup_tracing path in Step 2c (no provider of your own): flush with trace.get_tracer_provider().force_flush().

• Serverless handler (Lambda, Cloud Run jobs, etc.): provider.force_flush() before returning from EVERY invocation; never shutdown().

• Notebook: provider.force_flush() after the cell that runs the agent.

Step 7: Verify

Run one real conversation: 2-3 turns with the same session_id including one tool call, plus a second conversation with a different id. Flush. Wait ~1 minute. In Maple Agent Sessions, filtered by the service name (or via the Maple MCP list_agent_sessions + get_agent_session), check:

• Exactly one session per conversation id; none named trace:<id> (that means a run span had no session.id).
• The two conversations are two different sessions (not merged by a sticky auto id).
• Framework shows Agno (not Unidentified).
• One turn per run()/arun(); turn labels are the user messages.
• Transcript shows system prompt, user and assistant messages, tool calls.
• Model calls (<ModelClass>.invoke|ainvoke|invoke_stream|ainvoke_stream) show the model id and non-zero input/output tokens, including streamed turns.
• Each tool call appears once with its real name; a raised tool error is marked failed and nothing else is. Structured results render as JSON (not a Python repr).
• Teams: one lane per named member; the team run and all member spans are in one trace, same session; a run started after a team run is NOT inside the team's trace (else see Step 5 context leak).
• Cost shown in the Agent Sessions list if the provider returns it (OpenRouter does); otherwise "unpriced" is expected.
• No span attribute contains the model provider API key or Bearer.

No scriptable entry point (server, UI, REPL only): write a small driver for this run: one session_id, 2+ turns, one tool call, flush before exit.

Without Maple access (MAPLE_TEST, no MCP): the run must exit with no export errors on stderr (Failed to export, 401 lines) AND a local exporter (provider.add_span_processor(SimpleSpanProcessor(ConsoleSpanExporter())) in a scratch run) must show the spans below. Silence alone proves nothing (no spans is silent too). With the Maple MCP: list_agent_sessions with search=<session_id> returns one row.

401 ingest_unauthorized / "Invalid ingest key" with a key you trust: keys are region-bound, so it likely belongs to the other region; try the other endpoint.

Raw span check: run spans <agent_name>.run have session.id + gen_ai.operation.name=invoke_agent + gen_ai.agent.name; model spans have gen_ai.operation.name=chat, gen_ai.input.messages, gen_ai.usage.input_tokens; tool spans have gen_ai.operation.name=execute_tool.

Known behaviours (expected; explain if the user asks)

• If setup_tracing()/AgentOS(tracing=True) ran first, set_tracer_provider in tracing.py logs "Overriding of current TracerProvider is not allowed" and spans go only to the AgentOS database. A second instrument() call logs "Attempting to instrument while already instrumented" and its config is ignored.
• Without enable_genai_semconv, spans carry only OpenInference attributes (llm.input_messages.0.message.content, llm.token_count.prompt).
• Teams: delegate_task_to_member tool spans show as ordinary tool calls on the leader with member id and task as arguments. With team.arun() in coordinate mode, members called in one step run concurrently and their spans overlap; sync team.run() runs them sequentially.
• Team context leak is upstream issue agno#5573. "Failed to detach context" in the logs after a streamed team run is agno#5208: log noise, spans still export.
• Human-in-the-loop: the paused run (<agent>.run) and the resumed run (<agent>.continue_run) are two traces and two turns in one session; the approved tool call appears once, in the second. Instrumentor <1.0.8 doesn't wrap continue_run(), so resumed runs appear as loose model/tool calls with no session.
• Tokens: every model span has input/output tokens plus cache read/write when the provider reports them; streamed runs record usage from the final chunk. The run span has no tokens, so nothing is double counted. Reasoning tokens aren't broken out. Maple links tool results to calls through the message history since tool spans lack gen_ai.tool.call.id, and can't show streaming latency (no TTFT).
• Cost: OpenRouter's price is recorded as llm.cost.total (USD, instrumentor >=1.0.10). Providers called directly (OpenAI, Anthropic) return no price, so sessions are unpriced.
• A tool that raises: Agno catches it and hands the message to the model; the tool span is ERROR, the run span stays OK.

Do not

• Do not stamp maple_ai.session.id on Agno spans: it re-vendors them and loses decoding. Agno's own session.id is what Maple reads.