AgentX Python

The official Python SDK for AgentX — build, chat with, orchestrate, and trace AI agents in a few lines of code.

Also see SDK Developer Docs, API Reference Docs

Contents

• Why AgentX
• Installation
• Authentication
• Quick start
• Working with agents
  • List agents
  • Start a conversation
  • Chat (streaming and non-streaming)
• Workforce (multi-agent orchestration) — teams of agents with a designated manager
• Production tracing — record live agent runs from any framework
• Custom agent evaluations — LLM-as-a-judge, cosine / Jaccard similarity
• Links

Why AgentX

• Simple mental model — Agent → Conversation → Message.
• Chain-of-thought is built in, no extra plumbing.
• Bring any LLM — works across major open and closed-source vendors.
• Batteries included — voice (ASR/TTS), image generation, document/CSV/Excel/OCR, RAG with built-in re-ranking.
• MCP support — connect any Model Context Protocol server.
• Multi-agent orchestration — workforces of agents with a designated manager, across LLM vendors.
• Production tracing — one decorator or context manager records every agent run (input, output, latency, tool calls, token usage) into your workspace, for any framework.
• Agent Evaluations — score any agent (LangChain, CrewAI, OpenAI, Anthropic, HTTP, …) with LLM-as-a-judge ratings plus optional cosine and Jaccard similarity metrics.
• A2A — Each agent can be published with agent-to-agent protocol compatible.

Installation

pip install --upgrade agentx-python

Requires Python 3.9 or newer.

Authentication

Get your API key at app.agentx.so, then either pass it inline or expose it as an environment variable.

# Option A — pass the key inline
from agentx import AgentX
client = AgentX(api_key="your-api-key-here")

# Option B — set AGENTX_API_KEY in your environment, then:
client = AgentX.from_env()

Quick start

from agentx import AgentX

client = AgentX.from_env()

# Pick an existing agent and chat with it
agent = client.list_agents()[0]
conversation = agent.new_conversation()
print(conversation.chat("Hello! What can you help me with?"))

That's it. The remaining sections show the same primitives in more detail.

Working with agents

List agents

agents = client.list_agents()
print(f"You have {len(agents)} agents")

Start a conversation

agent = client.get_agent(id="<agent-id>")

# Either resume an existing conversation…
existing = agent.list_conversations()
last = existing[-1]
for msg in last.list_messages():
    print(msg)

# …or start a fresh one
conversation = agent.new_conversation()

Chat (streaming and non-streaming)

# Blocking — returns the full response once it's ready
response = conversation.chat("What is your name?")
print(response)

# Streaming — yields ChatResponse objects as the model produces them
for chunk in conversation.chat_stream("Hello, what is your name?"):
    if chunk.text:
        print(chunk.text, end="")

Each ChatResponse chunk exposes the agent's text and, where applicable, its cot (chain-of-thought) reasoning, along with any retrieved references and tasks.

Workforce (multi-agent orchestration)

A workforce is a team of agents coordinated by a designated manager agent. Workforces can mix LLM vendors and route work between specialists.

workforces = client.list_workforces()
workforce = workforces[0]

print(f"Workforce: {workforce.name}")
print(f"Manager:   {workforce.manager.name}")
print(f"Agents:    {[a.name for a in workforce.agents]}")

# Chat with the workforce — the manager decides which agent(s) to delegate to
conversation = workforce.new_conversation()
for chunk in workforce.chat_stream(conversation.id, "How can you help me with this project?"):
    if chunk.text:
        print(chunk.text, end="")

Production tracing

Record live agent runs into your workspace with a single decorator or context manager — no changes to your agent's logic. Traces appear in the Live Traces tab and can be evaluated against your test datasets with tracer.evaluate_trace().

from agentx import AgentX

client = AgentX.from_env()
tracer = client.tracer

@tracer.trace("customer-support-agent", framework="langchain", model="gpt-4o")
def handle_query(query: str) -> str:
    return chain.invoke(query)

# Every call is automatically traced: input, output, latency, tool calls, token usage
handle_query("How do I reset my password?")
tracer.flush(timeout=10)  # ensure delivery before the process exits

Prefer full control over what gets captured? Use the context manager instead:

with tracer.trace("rag-agent", framework="langchain") as span:
    span.input = {"query": query, "user_id": user_id}

    kb_result = search_knowledge_base(query)
    span.add_tool_call("search_knowledge_base", input=query, output=kb_result, latency_ms=190)

    span.output = llm.invoke(f"Context: {kb_result}\n\nQuery: {query}")

Framework integrations

Each integration auto-captures LLM calls, tool calls, and token usage — install the matching extra:

Or plain Python — wrap any function with @tracer.trace(...) and it just works, no framework required.

Running specialist agents in parallel with a ThreadPoolExecutor? Wrap each worker body in tracer.use_span(span) so their steps land on the parent trace instead of becoming independent traces — see TRACING.md for the full pattern.

See TRACING.md for the complete guide — session grouping, error handling, async support, and the full API reference.

Custom agent evaluations

Evaluate any AI agent — LangChain, CrewAI, AutoGen, LlamaIndex, OpenAI, Anthropic, HTTP endpoints, or plain Python — using AgentX as the scoring and reporting backend. Includes optional cosine and Jaccard similarity metrics alongside LLM-graded ratings.

report = (
    client.evaluations
    .run(dataset_id="evds_…", subject={"kind": "custom_agent", "framework": "raw_python"})
    .execute(my_agent_fn)
    .finalize()
    .analyze()
)

print(report.average_rating)       # LLM-graded score, 0–10
print(report.cosine_similarity)    # embedding cosine, 0–1 (None if not enabled)
print(report.jaccard_similarity)   # token-set overlap, 0–1 (None if not enabled)

See EVALUATIONS.md for the full guide — dataset builder, framework adapters, similarity metrics, and the complete API reference.

Links

• Dashboard — app.agentx.so
• Website — agentx.so
• PyPI — agentx-python
• Tracing docs — TRACING.md
• Evaluations docs — EVALUATIONS.md