🤖 I have created a release *beep* *boop*
---


##
[1.1.0](ChromeDevTools/chrome-devtools-mcp@chrome-devtools-mcp-v1.0.1...chrome-devtools-mcp-v1.1.0)
(2026-05-26)


### 🎉 Features

* add extraHttpHeaders emulation to emulate tool
([ChromeDevTools#1176](ChromeDevTools#1176))
([6992106](ChromeDevTools@6992106))
* created cursor plugin.json setting file with release auto versioning
([ChromeDevTools#2091](ChromeDevTools#2091))
([10c8205](ChromeDevTools@10c8205))


### 🛠️ Fixes

* Apply CPU throttling to secondary CDP session
([ChromeDevTools#2092](ChromeDevTools#2092))
([3ade962](ChromeDevTools@3ade962))
* **cli:** address pid file creation issues
([ChromeDevTools#2124](ChromeDevTools#2124))
([1b51a52](ChromeDevTools@1b51a52))
* exit on stdin EOF and SIGTERM/SIGINT/SIGHUP, closing the browser
cleanly
([ChromeDevTools#2117](ChromeDevTools#2117))
([43b934c](ChromeDevTools@43b934c))
* Fix throttling info in performance trace output
([ChromeDevTools#2096](ChromeDevTools#2096))
([57f32b0](ChromeDevTools@57f32b0))
* make pageId required
([ChromeDevTools#2084](ChromeDevTools#2084))
([d751693](ChromeDevTools@d751693)),
closes
[ChromeDevTools#2052](ChromeDevTools#2052)
* remove duplicate .mcp.json
([ChromeDevTools#2095](ChromeDevTools#2095))
([dbf6ba9](ChromeDevTools@dbf6ba9))
* Set viewport after updating timeouts when setting emulation
([ChromeDevTools#2134](ChromeDevTools#2134))
([0c3ac37](ChromeDevTools@0c3ac37))
* use pinned version for plugins
([ChromeDevTools#2135](ChromeDevTools#2135))
([8ea5f09](ChromeDevTools@8ea5f09))
* use realpath for MCP roots validation
([ChromeDevTools#2127](ChromeDevTools#2127))
([176eb69](ChromeDevTools@176eb69))


### 📄 Documentation

* align coding agent examples with Antigravity
([ChromeDevTools#2094](ChromeDevTools#2094))
([ce31594](ChromeDevTools@ce31594))
* fix installation instructions for VS Code
([ChromeDevTools#2087](ChromeDevTools#2087))
([9f47df3](ChromeDevTools@9f47df3))


### 🏗️ Refactor

* remove redundant validatePath calls
([ChromeDevTools#2136](ChromeDevTools#2136))
([521c388](ChromeDevTools@521c388))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

… cleanly (ChromeDevTools#2117)

Fixes ChromeDevTools#2116.

`chrome-devtools-mcp-main.ts` currently has no shutdown handler. After a
session calls `navigate_page` (or anything else that launches Chrome),
the Chrome subprocess keeps the Node event loop ref'd, so closing stdin
(the stdio MCP convention for "I'm done") doesn't make the server exit.
Callers that close stdin to terminate the server have to fall back to
SIGTERM / SIGKILL on every page-loaded session — deterministically, not
flakily.

This change:

1. Adds `closeBrowser()` in `browser.ts` that calls `browser.close()`
for launched instances (reaps the Chrome subprocess) and
`browser.disconnect()` for attached instances (leaves the user's Chrome
alive). No-op if no browser is active or the connection has already been
dropped.

2. Registers shutdown handlers in `chrome-devtools-mcp-main.ts` for:
   - `stdin.on('end' | 'close')` — stdio MCP transport convention
- `SIGTERM` / `SIGINT` / `SIGHUP` — clients that signal instead of
closing stdin (`SIGHUP` for parity with `src/daemon/daemon.ts`)

The handler is idempotent (guarded `shuttingDown` flag), and has an
unref'd 10s timeout backstop in case Chrome teardown hangs (slow
`beforeunload` handlers, many tabs, etc.).

### Note on scope

This complements (does not replace) the client-side fixes filed against
ChromeDevTools#1765, e.g. google-gemini/gemini-cli#13391 and
anthropics/claude-code#42300. The MCP stdio convention is that closing
stdin signals shutdown; a server that doesn't honor that forces every
client to special-case it. The watchdog sub-process
(`src/telemetry/watchdog/main.ts:145-146`) and the daemon
(`src/daemon/daemon.ts:224-230`) both already implement this for the
same reason — this PR extends the same pattern to the main entry point
so all three execution paths behave consistently.

### Measurement

Repro script in ChromeDevTools#2116, same env (chrome-devtools-mcp@1.0.1, Chrome
148.0.7778.178, Node v24.11.1, Linux), 10 iterations:

| Scenario | Before | After |
|---|---|---|
| `tools/list only` (no navigation) | 10/10 clean, 30-37 ms | 10/10
clean, 29-40 ms |
| `navigate example.com` | 10/10 SIGTERM at ~5080 ms | 10/10 clean at
145-180 ms |

### Notes

- I didn't add a subprocess-based test for this; the existing
`tests/utils.ts:runCli` infrastructure targets the `chrome-devtools`
CLI, not the stdio MCP server, and a shutdown-timing test would
introduce non-trivial Chrome-startup flakiness in CI. Happy to add one
if maintainers want it — pointer to the right test directory
appreciated.

🤖 I have created a release *beep* *boop*
---


##
[1.1.0](ChromeDevTools/chrome-devtools-mcp@chrome-devtools-mcp-v1.0.1...chrome-devtools-mcp-v1.1.0)
(2026-05-26)


### 🎉 Features

* add extraHttpHeaders emulation to emulate tool
([ChromeDevTools#1176](ChromeDevTools#1176))
([6992106](ChromeDevTools@6992106))
* created cursor plugin.json setting file with release auto versioning
([ChromeDevTools#2091](ChromeDevTools#2091))
([10c8205](ChromeDevTools@10c8205))


### 🛠️ Fixes

* Apply CPU throttling to secondary CDP session
([ChromeDevTools#2092](ChromeDevTools#2092))
([3ade962](ChromeDevTools@3ade962))
* **cli:** address pid file creation issues
([ChromeDevTools#2124](ChromeDevTools#2124))
([1b51a52](ChromeDevTools@1b51a52))
* exit on stdin EOF and SIGTERM/SIGINT/SIGHUP, closing the browser
cleanly
([ChromeDevTools#2117](ChromeDevTools#2117))
([43b934c](ChromeDevTools@43b934c))
* Fix throttling info in performance trace output
([ChromeDevTools#2096](ChromeDevTools#2096))
([57f32b0](ChromeDevTools@57f32b0))
* make pageId required
([ChromeDevTools#2084](ChromeDevTools#2084))
([d751693](ChromeDevTools@d751693)),
closes
[ChromeDevTools#2052](ChromeDevTools#2052)
* remove duplicate .mcp.json
([ChromeDevTools#2095](ChromeDevTools#2095))
([dbf6ba9](ChromeDevTools@dbf6ba9))
* Set viewport after updating timeouts when setting emulation
([ChromeDevTools#2134](ChromeDevTools#2134))
([0c3ac37](ChromeDevTools@0c3ac37))
* use pinned version for plugins
([ChromeDevTools#2135](ChromeDevTools#2135))
([8ea5f09](ChromeDevTools@8ea5f09))
* use realpath for MCP roots validation
([ChromeDevTools#2127](ChromeDevTools#2127))
([176eb69](ChromeDevTools@176eb69))


### 📄 Documentation

* align coding agent examples with Antigravity
([ChromeDevTools#2094](ChromeDevTools#2094))
([ce31594](ChromeDevTools@ce31594))
* fix installation instructions for VS Code
([ChromeDevTools#2087](ChromeDevTools#2087))
([9f47df3](ChromeDevTools@9f47df3))


### 🏗️ Refactor

* remove redundant validatePath calls
([ChromeDevTools#2136](ChromeDevTools#2136))
([521c388](ChromeDevTools@521c388))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).