diff --git a/libs/hackbot-runtime/hackbot_runtime/config.py b/libs/hackbot-runtime/hackbot_runtime/config.py
index 3b43aa62c65..83dd121d14e 100644
--- a/libs/hackbot-runtime/hackbot_runtime/config.py
+++ b/libs/hackbot-runtime/hackbot_runtime/config.py
@@ -7,6 +7,8 @@
 """
 
 import tomllib
+from functools import cached_property
+from importlib import metadata
 from pathlib import Path
 
 from pydantic import BaseModel
@@ -42,6 +44,18 @@ class HackbotConfig(BaseModel):
 
     source: SourceConfig | None = None
     firefox: FirefoxConfig | None = None
+    # Set by the runtime from the entry point, not read from the toml.
+    agent_name: str | None = None
+
+    @cached_property
+    def agent_version(self) -> str | None:
+        """The version in the agent's pyproject.toml, or None when it isn't installed."""
+        if self.agent_name is None:
+            return None
+        try:
+            return metadata.version(f"hackbot-agent-{self.agent_name}")
+        except metadata.PackageNotFoundError:
+            return None
 
 
 def load_config(path: Path) -> HackbotConfig:
diff --git a/libs/hackbot-runtime/hackbot_runtime/runtime.py b/libs/hackbot-runtime/hackbot_runtime/runtime.py
index ede5dbc65f1..4cecbb629cd 100644
--- a/libs/hackbot-runtime/hackbot_runtime/runtime.py
+++ b/libs/hackbot-runtime/hackbot_runtime/runtime.py
@@ -118,9 +118,12 @@ def _discover_config_path(entrypoint: Callable) -> Path | None:
 
 def _resolve_config(entrypoint: Callable, config: ConfigArg) -> HackbotConfig:
     if isinstance(config, HackbotConfig):
-        return config
-    path = config if isinstance(config, Path) else _discover_config_path(entrypoint)
-    return load_config(path) if path else HackbotConfig()
+        parsed = config
+    else:
+        path = config if isinstance(config, Path) else _discover_config_path(entrypoint)
+        parsed = load_config(path) if path else HackbotConfig()
+    parsed.agent_name = resolve_agent_name(entrypoint)
+    return parsed
 
 
 def _load_hackbot(entrypoint: Callable, config: ConfigArg) -> HackbotContext | None:
@@ -169,6 +172,7 @@ def _finish(ctx: HackbotContext, outcome: object) -> int:
         log.error(msg)
         payload = _error_payload(ctx, msg)
         exit_code = 1
+    payload["agent_version"] = ctx.config.agent_version
 
     try:
         _publish_log(ctx)
diff --git a/libs/hackbot-runtime/tests/test_runtime.py b/libs/hackbot-runtime/tests/test_runtime.py
index 02d7a81ef68..ca1581e2dc0 100644
--- a/libs/hackbot-runtime/tests/test_runtime.py
+++ b/libs/hackbot-runtime/tests/test_runtime.py
@@ -8,6 +8,7 @@
     AgentError,
     HackbotAgentResult,
     HackbotContext,
+    config,
     run_async,
     runtime,
 )
@@ -228,6 +229,21 @@ async def main(ctx):
     assert summary["findings"] == {"num_turns": 1, "total_cost_usd": None}
 
 
+def test_run_async_records_agent_version(tmp_path, monkeypatch):
+    _run_env(tmp_path, monkeypatch)
+    versions = {"hackbot-agent-tests": "1.2.3"}
+    monkeypatch.setattr(config.metadata, "version", versions.__getitem__)
+
+    async def main(ctx):
+        return HackbotAgentResult(num_turns=1)
+
+    with pytest.raises(SystemExit):
+        run_async(main)
+
+    summary = json.loads((tmp_path / "t" / "summary.json").read_text())
+    assert summary["agent_version"] == "1.2.3"
+
+
 def test_run_async_exits_nonzero_when_agent_raises(tmp_path, monkeypatch):
     _run_env(tmp_path, monkeypatch)
 
diff --git a/services/hackbot-api/app/schemas.py b/services/hackbot-api/app/schemas.py
index 4eda982a7e3..db129d0e336 100644
--- a/services/hackbot-api/app/schemas.py
+++ b/services/hackbot-api/app/schemas.py
@@ -29,6 +29,7 @@ class ArtifactRef(BaseModel):
 class RunSummary(BaseModel):
     status: str
     error: str | None = None
+    agent_version: str | None = None
     findings: dict[str, Any] = {}
     actions: list[dict[str, Any]] = []