Agent Memory HTTP SDK and lightweight Agent adapter
Project description
agent-memory-sdk
Agent Memory Python SDK 用于让 Python Agent 接入外部记忆服务。当前版本提供同步 Client 和轻量 AgentMemorySession 接入层。
安装
python -m pip install agent-memory-sdk
本地开发时可以从源码安装:
cd sdk/python
python -m pip install -e .
创建 Client
import os
from agent_memory import AgentMemoryClient
client = AgentMemoryClient(
base_url=os.environ["AGENT_MEMORY_BASE_URL"],
api_key=os.environ["AGENT_MEMORY_API_KEY"],
)
常用环境变量:
export AGENT_MEMORY_BASE_URL='http://localhost:8080'
export AGENT_MEMORY_API_KEY='<workspace api key>'
export AGENT_MEMORY_AGENT_INSTANCE_ID='<agent_instance_id>'
创建或复用 Session
每个 Agent 会话开始时先创建或复用 session。external_session_id 是调用方自己的会话 ID,同一个 Agent 下重复传入会复用同一个服务端 session。
import os
from agent_memory.types import CreateSessionReq
session = client.create_session(
CreateSessionReq(
agent_instance_id=os.environ["AGENT_MEMORY_AGENT_INSTANCE_ID"],
external_session_id="python-task-20260616-001",
metadata={"source": "python-agent"},
)
)
print("session_id:", session.session_id)
写入 Memory Event
Agent 每轮推理和工具执行过程都应该写入 memory event。事件是记忆生成的事实来源。
from agent_memory.types import RecordEventReq
event = client.record_event(
RecordEventReq(
session_id=session.session_id,
external_thread_id="main",
event_id="evt-user-001",
event_type="message",
actor="user",
status="success",
summary="用户要求继续 SDK 接入任务。",
payload={"text": "请继续 SDK 接入任务"},
)
)
print("thread_id:", event.thread_id)
常用事件类型:
| event_type | 适合场景 |
|---|---|
message |
用户消息、Agent 回复 |
tool_call |
调用工具前记录工具名和参数摘要 |
tool_result |
工具执行完成后记录结果、状态、错误码 |
planner_update |
计划、待办、阶段性决策变化 |
task_state |
任务开始、暂停、完成、失败、阻塞 |
artifact_change |
文件、代码、文档、报告等产物变化 |
correction_signal |
用户纠错或要求修正此前信息 |
工具失败事件建议填写 status、error_code 和 retryable。
client.record_event(
RecordEventReq(
session_id=session.session_id,
event_id="evt-tool-result-001",
event_type="tool_result",
actor="tool",
status="error",
tool_name="pytest",
error_code="TEST_FAILED",
retryable=True,
summary="pytest 执行失败。",
payload={"command": "pytest", "exit_code": 1},
)
)
查询记忆
每轮 Agent 推理前建议调用一次记忆查询,获取少量可注入上下文。
from agent_memory.adapter import format_memory_context
from agent_memory.types import MemoryQueryReq
response = client.query_memories(
MemoryQueryReq(
session_id=session.session_id,
thread_id=event.thread_id,
query_text="继续 SDK 接入任务,需要恢复当前进展和注意事项",
query_intent="execution_help",
desired_memory_types=[
"task_whiteboard",
"tool_digest",
"failure_digest",
"procedure",
],
limit=8,
event_limit=3,
)
)
prompt_context = format_memory_context(response)
print(prompt_context)
常用查询意图:
| query_intent | 适合场景 |
|---|---|
execution_help |
继续任务、写代码、调用工具、排错 |
policy_lookup |
查询规则、约束、团队规范 |
preference_lookup |
查询用户偏好、输出风格 |
factual_lookup |
查询稳定事实、项目背景 |
broad_context |
不确定意图时综合召回 |
触发短记忆生成
短记忆用于整理当前 session/thread 的近期上下文,例如任务白板、工具结果摘要、失败摘要。
适合触发时机:
- 用户消息写入后,尤其是用户给出新目标或新约束。
- 工具调用或工具结果写入后。
- 一个阶段性步骤完成后。
- 出现错误、超时、取消、用户纠错后。
from agent_memory.types import GenerateMemoryReq
run = client.generate_short_memory(
GenerateMemoryReq(
session_id=session.session_id,
thread_id=event.thread_id,
trigger_source="thread_end",
hints={"reason": "阶段完成后刷新任务白板"},
)
)
print("short memory queued:", run.run_ids)
status=queued 表示任务已入队。需要 worker 消费完成后,新的短记忆才会出现在查询结果中。
触发长记忆整理
长记忆用于沉淀跨会话可复用的信息,例如事实、偏好、流程和规则。
适合触发时机:
- 会话结束时。
- 一个完整任务完成后。
- 用户明确表达稳定偏好时。
- 形成可复用流程、项目事实、团队规则时。
- 不建议对临时、未经确认、明显只对当前轮有效的信息触发长期整理。
run = client.consolidate_long_memory(
GenerateMemoryReq(
session_id=session.session_id,
trigger_source="session_end",
hints={"reason": "会话结束后沉淀长期记忆"},
)
)
print("long memory queued:", run.run_ids)
使用 AgentMemorySession 简化接入
AgentMemorySession 会自动创建 session、写标准事件,并缓存服务端返回的 thread_id,后续查询和生成会自动带上线程上下文。
import os
from agent_memory import AgentMemoryClient, AgentMemorySession
client = AgentMemoryClient(
base_url=os.environ["AGENT_MEMORY_BASE_URL"],
api_key=os.environ["AGENT_MEMORY_API_KEY"],
)
agent_memory = AgentMemorySession(
client,
agent_instance_id=os.environ["AGENT_MEMORY_AGENT_INSTANCE_ID"],
external_session_id="python-task-20260616-001",
external_thread_id="main",
)
agent_memory.record_user_message("请继续 SDK 接入任务。")
short_run = agent_memory.generate_short_memory("thread_end")
print("short memory queued:", short_run.run_ids)
memory_context = agent_memory.query_context(
query_text="继续 SDK 接入任务",
query_intent="execution_help",
desired_memory_types=["task_whiteboard", "tool_digest", "procedure"],
limit=6,
event_limit=3,
)
print(memory_context.text)
查看示例
cd sdk/python
python examples/basic.py
python examples/agent_loop.py
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