[Feat]: Tell the agent the current date (#7509)

openhands/agenthub/codeact_agent/prompts/additional_info.j2

@@ -24,5 +24,8 @@ For example, if you are using vite.config.js, you should set server.host and ser
 {% if runtime_info.additional_agent_instructions %}
 {{ runtime_info.additional_agent_instructions }}
 {% endif %}
+{% if runtime_info.date %}
+Today's date is {{ runtime_info.date }} (UTC).
+{% endif %}
 </RUNTIME_INFORMATION>
 {% endif %}

openhands/events/observation/agent.py

@@ -72,6 +72,7 @@ class RecallObservation(Observation):
     repo_instructions: str = ''
     runtime_hosts: dict[str, int] = field(default_factory=dict)
     additional_agent_instructions: str = ''
+    date: str = ''
 
     # knowledge
     microagent_knowledge: list[MicroagentKnowledge] = field(default_factory=list)
@@ -112,6 +113,7 @@ class RecallObservation(Observation):
                     f'repo_instructions={self.repo_instructions[:20]}...',
                     f'runtime_hosts={self.runtime_hosts}',
                     f'additional_agent_instructions={self.additional_agent_instructions[:20]}...',
+                    f'date={self.date}'
                 ]
             )
         else:

openhands/memory/conversation_memory.py

@@ -399,13 +399,16 @@ class ConversationMemory:
                 else:
                     repo_info = None
 
+                date = obs.date
+
                 if obs.runtime_hosts or obs.additional_agent_instructions:
                     runtime_info = RuntimeInfo(
                         available_hosts=obs.runtime_hosts,
                         additional_agent_instructions=obs.additional_agent_instructions,
+                        date=date,
                     )
                 else:
-                    runtime_info = None
+                    runtime_info = RuntimeInfo(date=date)
 
                 repo_instructions = (
                     obs.repo_instructions if obs.repo_instructions else ''

openhands/memory/memory.py

@@ -1,6 +1,7 @@
 import asyncio
 import os
 import uuid
+from datetime import datetime, timezone
 from typing import Callable
 
 import openhands
@@ -170,6 +171,7 @@ class Memory:
                 else '',
                 microagent_knowledge=microagent_knowledge,
                 content='Added workspace context',
+                date=self.runtime_info.date if self.runtime_info is not None else '',
             )
             return obs
         return None
@@ -263,13 +265,17 @@ class Memory:
     def set_runtime_info(self, runtime: Runtime) -> None:
         """Store runtime info (web hosts, ports, etc.)."""
         # e.g. { '127.0.0.1': 8080 }
+        utc_now = datetime.now(timezone.utc)
+        date = str(utc_now.date())
+
         if runtime.web_hosts or runtime.additional_agent_instructions:
             self.runtime_info = RuntimeInfo(
                 available_hosts=runtime.web_hosts,
                 additional_agent_instructions=runtime.additional_agent_instructions,
+                date=date,
             )
         else:
-            self.runtime_info = None
+            self.runtime_info = RuntimeInfo(date=date)
 
     def send_error_message(self, message_id: str, message: str):
         """Sends an error message if the callback function was provided."""

openhands/utils/prompt.py

@@ -11,6 +11,7 @@ from openhands.events.observation.agent import MicroagentKnowledge
 
 @dataclass
 class RuntimeInfo:
+    date: str
     available_hosts: dict[str, int] = field(default_factory=dict)
     additional_agent_instructions: str = ''
 

tests/unit/test_observation_serialization.py

@@ -245,6 +245,7 @@ def test_microagent_observation_serialization():
             'runtime_hosts': {'host1': 8080, 'host2': 8081},
             'repo_instructions': 'complex_repo_instructions',
             'additional_agent_instructions': 'You know it all about this runtime',
+            'date': '04/12/1023',
             'microagent_knowledge': [],
         },
     }
@@ -263,6 +264,7 @@ def test_microagent_observation_microagent_knowledge_serialization():
             'repo_instructions': '',
             'runtime_hosts': {},
             'additional_agent_instructions': '',
+            'date': '',
             'microagent_knowledge': [
                 {
                     'name': 'microagent1',

tests/unit/test_prompt_manager.py

@@ -239,6 +239,7 @@ each of which has a corresponding port:
     # Create repository and runtime information
     repo_info = RepositoryInfo(repo_name='owner/repo', repo_directory='/workspace/repo')
     runtime_info = RuntimeInfo(
+        date='02/12/1232',
         available_hosts={'example.com': 8080},
         additional_agent_instructions='You know everything about this runtime.',
     )
@@ -260,6 +261,7 @@ each of which has a corresponding port:
     assert '<RUNTIME_INFORMATION>' in result
     assert 'example.com (port 8080)' in result
     assert 'You know everything about this runtime.' in result
+    assert "Today's date is 02/12/1232 (UTC)."
 
     # Clean up
     os.remove(os.path.join(prompt_dir, 'additional_info.j2'))