feat(galileo-a2a): rebrand to SPLUNK_AO_* env vars and SplunkAOSpanProcessor (HYBIM-716)

Core package:
- Rename GALILEO_OBSERVE_KEY -> SPLUNK_AO_OBSERVE_KEY in _constants.py
- Rename GALILEO_* context vars to SPLUNK_AO_* in _context.py and _client_patches.py
- Update pyproject.toml: galileo dependency -> splunk-ao, update classifiers

Examples:
- examples/.env.example: replace SPLUNK_AO_CONSOLE_URL with SPLUNK_AO_API_URL
  (direct API host is required for self-hosted deployments)

Documentation (README.md):
- Replace GalileoSpanProcessor -> SplunkAOSpanProcessor in all code examples
- Replace GALILEO_* env vars -> SPLUNK_AO_* in configuration table
- Add SPLUNK_AO_API_URL row (required for self-hosted)
- Update all Galileo brand mentions to Splunk AO

Tests:
- Update all GALILEO_* env var references to SPLUNK_AO_* in conftest.py and test_context.py

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: adityamehra

galileo-a2a/README.md

@@ -4,7 +4,7 @@
 [![Python versions](https://img.shields.io/pypi/pyversions/galileo-a2a.svg)](https://pypi.org/project/galileo-a2a/)
 [![License](https://img.shields.io/pypi/l/galileo-a2a.svg)](https://github.com/rungalileo/galileo-python/blob/main/LICENSE)
 
-Galileo observability for [A2A (Agent-to-Agent)](https://github.com/google/A2A) protocol interactions. Automatic tracing of agent-to-agent calls, task lifecycle, and cross-agent distributed trace correlation.
+Splunk AO observability for [A2A (Agent-to-Agent)](https://github.com/google/A2A) protocol interactions. Automatic tracing of agent-to-agent calls, task lifecycle, and cross-agent distributed trace correlation.
 
 ## How It Works
 
@@ -25,31 +25,31 @@ Galileo observability for [A2A (Agent-to-Agent)](https://github.com/google/A2A)
 │             └─────────────────┬────────────────────────┘             │
 │                               │                                      │
 │                    ┌──────────▼──────────┐                           │
-│                    │      Galileo        │                           │
+│                    │     Splunk AO       │                           │
 │                    │  (Trace Explorer)   │                           │
 │                    └─────────────────────┘                           │
 └──────────────────────────────────────────────────────────────────────┘
 ```
 
-`galileo-a2a` instruments both the **client** (outbound calls) and **server** (inbound requests) sides of the A2A protocol. Trace context is propagated through A2A message metadata so all agents appear in a single distributed trace in Galileo.
+`galileo-a2a` instruments both the **client** (outbound calls) and **server** (inbound requests) sides of the A2A protocol. Trace context is propagated through A2A message metadata so all agents appear in a single distributed trace in Splunk AO.
 
 ## Installation
 
 ```bash
 pip install galileo-a2a
 ```
 
-**Requirements:** Python 3.10+, a [Galileo API key](https://www.rungalileo.io/), and [a2a-sdk](https://pypi.org/project/a2a-sdk/) 0.3+
+**Requirements:** Python 3.10+, a [Splunk AO API key](https://www.splunk.com/), and [a2a-sdk](https://pypi.org/project/a2a-sdk/) 0.3+
 
 ## Quick Start
 
 ```python
-from splunk_ao.otel import GalileoSpanProcessor, add_galileo_span_processor
+from splunk_ao.otel import SplunkAOSpanProcessor, add_galileo_span_processor
 from galileo_a2a import A2AInstrumentor
 from opentelemetry.sdk.trace import TracerProvider
 
 provider = TracerProvider()
-add_galileo_span_processor(provider, GalileoSpanProcessor())
+add_galileo_span_processor(provider, SplunkAOSpanProcessor())
 A2AInstrumentor().instrument(tracer_provider=provider, agent_name="orchestrator")
 ```
 
@@ -63,13 +63,14 @@ Once instrumented, all `a2a-sdk` client and server interactions produce OTel spa
 | `agent_name` | Name of this agent, set on spans as `gen_ai.agent.name`. |
 | `capture_content` | Set to `False` to disable capturing message content (e.g. for PII compliance). |
 
-Environment variables for the Galileo exporter:
+Environment variables for the Splunk AO exporter:
 
 | Environment Variable | Description |
 |---------------------|-------------|
-| `GALILEO_API_KEY` | Galileo API key (required) |
-| `GALILEO_PROJECT` | Project name (alternative to `GalileoSpanProcessor(project=...)`) |
-| `GALILEO_LOG_STREAM` | Log stream name (alternative to `GalileoSpanProcessor(logstream=...)`) |
+| `SPLUNK_AO_API_KEY` | Splunk AO API key (required) |
+| `SPLUNK_AO_API_URL` | Splunk AO API host URL (required for self-hosted deployments, e.g. `https://agent-observability-api.rc0.signalfx.com`) |
+| `SPLUNK_AO_PROJECT` | Project name (alternative to `SplunkAOSpanProcessor(project=...)`) |
+| `SPLUNK_AO_LOG_STREAM` | Log stream name (alternative to `SplunkAOSpanProcessor(logstream=...)`) |
 
 ## Features
 
@@ -83,11 +84,11 @@ The instrumentor patches both sides of the A2A protocol:
 
 ### Cross-Agent Distributed Tracing
 
-When Agent A calls Agent B, trace context is propagated through A2A message metadata. The receiving agent joins the caller's trace, so both agents appear in a single distributed trace in Galileo.
+When Agent A calls Agent B, trace context is propagated through A2A message metadata. The receiving agent joins the caller's trace, so both agents appear in a single distributed trace in Splunk AO.
 
 ### Session Tracking
 
-A2A's `context_id` is mapped to `session.id`, grouping all interactions within the same conversation into a Galileo session.
+A2A's `context_id` is mapped to `session.id`, grouping all interactions within the same conversation into a Splunk AO session.
 
 ### Disabling Instrumentation
 
@@ -119,7 +120,7 @@ from a2a.types import (
     AgentCapabilities, AgentCard, AgentSkill, Message, Role,
     TaskState, TaskStatus, TaskStatusUpdateEvent, TextPart,
 )
-from splunk_ao.otel import GalileoSpanProcessor, add_galileo_span_processor
+from splunk_ao.otel import SplunkAOSpanProcessor, add_galileo_span_processor
 from galileo_a2a import A2AInstrumentor
 from langchain.agents import create_agent
 from langchain_core.tools import tool
@@ -132,7 +133,7 @@ from typing_extensions import TypedDict
 
 # ---- Only 4 lines needed for full distributed tracing ----
 provider = TracerProvider()
-add_galileo_span_processor(provider, GalileoSpanProcessor())
+add_galileo_span_processor(provider, SplunkAOSpanProcessor())
 A2AInstrumentor().instrument(tracer_provider=provider, agent_name="orchestrator")
 LangchainInstrumentor().instrument(tracer_provider=provider)
 
@@ -255,13 +256,13 @@ async def main():
     provider.shutdown()
 
 if __name__ == "__main__":
-    # Set environment variables: GALILEO_API_KEY, OPENAI_API_KEY
+    # Set environment variables: SPLUNK_AO_API_KEY, OPENAI_API_KEY
     asyncio.run(main())
 ```
 
 ## Resources
 
-- [Galileo Documentation](https://v2docs.galileo.ai)
+- [Splunk AO Documentation](https://docs.splunk.com/)
 - [A2A Protocol Specification](https://a2a-protocol.org)
 - [a2a-sdk Documentation](https://pypi.org/project/a2a-sdk)
 

galileo-a2a/examples/.env.example

@@ -1,5 +1,5 @@
-GALILEO_API_KEY=your-galileo-key
-GALILEO_CONSOLE_URL=http://localhost:8088
-GALILEO_PROJECT=a2a-distributed-tracing-demo
-GALILEO_LOG_STREAM=dev
+SPLUNK_AO_API_KEY=your-splunk-ao-key
+SPLUNK_AO_API_URL=https://<splunk-ao-api-host>
+SPLUNK_AO_PROJECT=a2a-distributed-tracing-demo
+SPLUNK_AO_LOG_STREAM=dev
 OPENAI_API_KEY=your-openai-key

galileo-a2a/pyproject.toml

@@ -69,10 +69,10 @@ python_files = ["test_*.py"]
 python_classes = ["Test*"]
 python_functions = ["test_*"]
 env = [
-    "GALILEO_CONSOLE_URL=http://fake.test:8088",
-    "GALILEO_API_KEY=api-1234567890",
-    "GALILEO_PROJECT=test-project",
-    "GALILEO_LOG_STREAM=test-log-stream",
+    "SPLUNK_AO_CONSOLE_URL=http://fake.test:8088",
+    "SPLUNK_AO_API_KEY=api-1234567890",
+    "SPLUNK_AO_PROJECT=test-project",
+    "SPLUNK_AO_LOG_STREAM=test-log-stream",
 ]
 addopts = [
     "-v",

galileo-a2a/src/galileo_a2a/_client_patches.py

@@ -11,7 +11,7 @@
 from opentelemetry import trace
 from opentelemetry.trace import StatusCode, Tracer
 
-from galileo_a2a._constants import GALILEO_OBSERVE_KEY
+from galileo_a2a._constants import SPLUNK_AO_OBSERVE_KEY
 from galileo_a2a._context import inject_trace_context, iter_with_context
 from galileo_a2a._spans import (
     set_client_attributes,
@@ -107,7 +107,7 @@ async def wrapper(
                 otel_context.detach(token)
 
             request_metadata = dict(request_metadata) if request_metadata else {}
-            request_metadata[GALILEO_OBSERVE_KEY] = observe_ctx
+            request_metadata[SPLUNK_AO_OBSERVE_KEY] = observe_ctx
 
             result = original(
                 self,

galileo-a2a/src/galileo_a2a/_constants.py

@@ -3,11 +3,11 @@
 # Instrumentor identity
 from galileo_a2a._version import __version__
 
-INSTRUMENTOR_NAME = "galileo-a2a"
+INSTRUMENTOR_NAME = "splunk-ao-a2a"
 INSTRUMENTOR_VERSION = __version__
 
 # Metadata keys for in-band trace context propagation
-GALILEO_OBSERVE_KEY = "galileo_observe"
+SPLUNK_AO_OBSERVE_KEY = "splunk_ao_observe"
 AGNTCY_OBSERVE_KEY = "observe"  # compatibility with AGNTCY Observe SDK
 
 # A2A span attribute keys (match API-side A2A extension expectations)

galileo-a2a/src/galileo_a2a/_context.py

@@ -12,7 +12,7 @@
 
 from galileo_a2a._constants import (
     AGNTCY_OBSERVE_KEY,
-    GALILEO_OBSERVE_KEY,
+    SPLUNK_AO_OBSERVE_KEY,
     LINK_FROM_AGENT,
     LINK_TYPE,
     LINK_TYPE_AGENT_HANDOFF,
@@ -46,14 +46,14 @@ def inject_trace_context(agent_name: str | None = None) -> dict[str, str]:
 def extract_trace_context(metadata: dict[str, Any] | None) -> dict[str, str] | None:
     """Extract trace context from A2A request metadata.
 
-    Checks the Galileo key first, then falls back to the AGNTCY key for
+    Checks the Splunk AO key first, then falls back to the AGNTCY key for
     interoperability with the AGNTCY Observe SDK.  Returns ``None`` when
     no trace context is present.
     """
     if not metadata or not isinstance(metadata, dict):
         return None
 
-    ctx = metadata.get(GALILEO_OBSERVE_KEY)
+    ctx = metadata.get(SPLUNK_AO_OBSERVE_KEY)
     if ctx and isinstance(ctx, dict):
         return {str(k): str(v) for k, v in ctx.items()}
 

galileo-a2a/tests/conftest.py

@@ -9,8 +9,8 @@
 # 3. Security - prevents real API keys from leaking into test logs
 import os
 
-os.environ["GALILEO_CONSOLE_URL"] = "http://fake.test:8088"
-os.environ["GALILEO_API_KEY"] = "api-1234567890"
-os.environ["GALILEO_PROJECT"] = "test-project"
-os.environ["GALILEO_LOG_STREAM"] = "test-log-stream"
+os.environ["SPLUNK_AO_CONSOLE_URL"] = "http://fake.test:8088"
+os.environ["SPLUNK_AO_API_KEY"] = "api-1234567890"
+os.environ["SPLUNK_AO_PROJECT"] = "test-project"
+os.environ["SPLUNK_AO_LOG_STREAM"] = "test-log-stream"
 # fmt: on

galileo-a2a/tests/test_context.py

@@ -5,7 +5,7 @@
 from opentelemetry.sdk.trace import TracerProvider
 from opentelemetry.trace import Link
 
-from galileo_a2a._constants import AGNTCY_OBSERVE_KEY, GALILEO_OBSERVE_KEY
+from galileo_a2a._constants import AGNTCY_OBSERVE_KEY, SPLUNK_AO_OBSERVE_KEY
 from galileo_a2a._context import (
     create_span_link_from_context,
     extract_trace_context,
@@ -33,10 +33,10 @@ def test_includes_agent_name(self):
 
 
 class TestExtractTraceContext:
-    def test_extracts_from_galileo_observe_key(self):
-        # Given: metadata with galileo_observe context
+    def test_extracts_from_splunk_ao_observe_key(self):
+        # Given: metadata with splunk_ao_observe context
         metadata = {
-            GALILEO_OBSERVE_KEY: {
+            SPLUNK_AO_OBSERVE_KEY: {
                 "traceparent": "00-aabb00112233445566778899aabbccdd-1122334455667788-01",
                 "agent_name": "planner",
             }
@@ -45,7 +45,7 @@ def test_extracts_from_galileo_observe_key(self):
         # When: extracting trace context
         result = extract_trace_context(metadata)
 
-        # Then: context extracted from galileo_observe key
+        # Then: context extracted from splunk_ao_observe key
         assert result is not None
         assert result["traceparent"] == "00-aabb00112233445566778899aabbccdd-1122334455667788-01"
         assert result["agent_name"] == "planner"
@@ -66,19 +66,19 @@ def test_extracts_from_agntcy_observe_key(self):
         assert result is not None
         assert "traceparent" in result
 
-    def test_galileo_key_takes_precedence_over_agntcy(self):
+    def test_splunk_ao_key_takes_precedence_over_agntcy(self):
         # Given: metadata with both keys
         metadata = {
-            GALILEO_OBSERVE_KEY: {"traceparent": "galileo-traceparent"},
+            SPLUNK_AO_OBSERVE_KEY: {"traceparent": "splunk-ao-traceparent"},
             AGNTCY_OBSERVE_KEY: {"traceparent": "agntcy-traceparent"},
         }
 
         # When: extracting trace context
         result = extract_trace_context(metadata)
 
-        # Then: galileo key takes precedence
+        # Then: splunk_ao key takes precedence
         assert result is not None
-        assert result["traceparent"] == "galileo-traceparent"
+        assert result["traceparent"] == "splunk-ao-traceparent"
 
     def test_returns_none_when_missing(self):
         # Given: metadata with no observe keys