# Firefox Tooling Announcements

**URL:** https://discourse.mozilla.org/c/firefox-tooling-announcements/521.md

[Latest](https://discourse.mozilla.org/latest.md) · [Categories](https://discourse.mozilla.org/categories.md) · [Tags](https://discourse.mozilla.org/tags.md)

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## [About the Firefox Tooling Announcements category](https://discourse.mozilla.org/t/about-the-firefox-tooling-announcements-category/71651)

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**Author:** [@alberto](https://discourse.mozilla.org/u/alberto)\
**Replies:** 0

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Announcements of internal Firefox tooling changes.

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## [MozPhab 2.22.1 Released](https://discourse.mozilla.org/t/mozphab-2-22-1-released/149814)

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**Author:** [@sheehan](https://discourse.mozilla.org/u/sheehan)\
**Replies:** 0\
**Last updated:** [October 15, 2026, 3:01am UTC](https://discourse.mozilla.org/t/mozphab-2-22-1-released/149814 "2026-10-15T03:01:58Z")

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Bugs resolved in Moz-Phab 2.22.1: bug 2078299 Allow overriding base url and repo call sign for development purposes Discuss these changes in #engineering-workflow on Slack or #Conduit Matrix.

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## [MozPhab 2.22.0 Released](https://discourse.mozilla.org/t/mozphab-2-22-0-released/149813)

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**Author:** [@sheehan](https://discourse.mozilla.org/u/sheehan)\
**Replies:** 0\
**Last updated:** [October 15, 2026, 2:13am UTC](https://discourse.mozilla.org/t/mozphab-2-22-0-released/149813 "2026-10-15T02:13:29Z")

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Bugs resolved in Moz-Phab 2.22.0: bug 1501077 moz-phab does not update the reviewers list in Phabricator to match local changes bug 2074122 moz-phab --apply-to here --no-branch changed my tree and branch without prompt…

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## [Happy BMO Push Day! (20261013.2)](https://discourse.mozilla.org/t/happy-bmo-push-day-20261013-2/149795)

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**Author:** [@dkl1](https://discourse.mozilla.org/u/dkl1)\
**Replies:** 0\
**Last updated:** [October 13, 2026, 10:21pm UTC](https://discourse.mozilla.org/t/happy-bmo-push-day-20261013-2/149795 "2026-10-13T22:21:16Z")

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Github Link The following changes have been pushed to bugzilla.mozilla.org: Bug 2079152 - Unable to select content-type when creating attachment Bug 2079453 - Upgrade devbridge-autocomplete to 2.0.1 and fix autocomple…

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## [Firefox Profiler Deployment (October 13, 2026)](https://discourse.mozilla.org/t/firefox-profiler-deployment-october-13-2026/149776)

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**Author:** [@fatadel](https://discourse.mozilla.org/u/fatadel)\
**Replies:** 0\
**Last updated:** [October 13, 2026, 3:10pm UTC](https://discourse.mozilla.org/t/firefox-profiler-deployment-october-13-2026/149776 "2026-10-13T15:10:11Z")

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The latest version of the Firefox Profiler is now live! Check out the full changelog below to see what’s changed: Highlights: \[Markus Stange\] Speed up activity graph drawing (#5888) \[Florian Quèze\] profiler-cli: accep…

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## [Firefox DevTools MCP 0.10.5 released](https://discourse.mozilla.org/t/firefox-devtools-mcp-0-10-5-released/149725)

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**Author:** [@jdescottes](https://discourse.mozilla.org/u/jdescottes)\
**Replies:** 0\
**Last updated:** [October 9, 2026, 2:03pm UTC](https://discourse.mozilla.org/t/firefox-devtools-mcp-0-10-5-released/149725 "2026-10-09T14:03:21Z")

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New release of Firefox DevTools MCP. Available on npm at https://www.npmjs.com/package/@mozilla/firefox-devtools-mcp Fixed set\_firefox\_prefs and get\_firefox\_prefs work again. They now use WebDriver BiDi to run in the p…

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## [Happy BMO Push Day! (20261006.1)](https://discourse.mozilla.org/t/happy-bmo-push-day-20261006-1/149687)

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**Author:** [@dkl1](https://discourse.mozilla.org/u/dkl1)\
**Replies:** 0\
**Last updated:** [October 6, 2026, 9:43pm UTC](https://discourse.mozilla.org/t/happy-bmo-push-day-20261006-1/149687 "2026-10-06T21:43:42Z")

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Github Link The following changes have been pushed to bugzilla.mozilla.org: Bug 2075358 - Native Mojo REST endpoints serve anonymous requests when requirelogin is enabled Bug 2074690 - BMO REST API cannot set any DATE…

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## [MozPhab 2.21.0 Released](https://discourse.mozilla.org/t/mozphab-2-21-0-released/149582)

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**Author:** [@sheehan](https://discourse.mozilla.org/u/sheehan)\
**Replies:** 0\
**Last updated:** [September 25, 2026, 6:18pm UTC](https://discourse.mozilla.org/t/mozphab-2-21-0-released/149582 "2026-09-25T18:18:22Z")

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Bugs resolved in Moz-Phab 2.21.0: bug 2068637 code review bot fails to apply patches when the parent is not known bug 2073291 moz-phab submit could load reviewers and review groups in parallel with revisions and diffs b…

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## [MozPhab 2.20.0 Released](https://discourse.mozilla.org/t/mozphab-2-20-0-released/149552)

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**Author:** [@sheehan](https://discourse.mozilla.org/u/sheehan)\
**Replies:** 0\
**Last updated:** [September 23, 2026, 4:45pm UTC](https://discourse.mozilla.org/t/mozphab-2-20-0-released/149552 "2026-09-23T16:45:33Z")

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Bugs resolved in Moz-Phab 2.20.0: bug 2066178 Drop support for Python 3.9 bug 2068605 preserve file logging from moz-phab list --format json and moz-phab patch --raw bug 2071586 Review queue reminders should ignore gro…

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## [Happy BMO Push Day! (20260922.1)](https://discourse.mozilla.org/t/happy-bmo-push-day-20260922-1/149538)

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**Author:** [@dkl1](https://discourse.mozilla.org/u/dkl1)\
**Replies:** 0\
**Last updated:** [September 22, 2026, 10:25pm UTC](https://discourse.mozilla.org/t/happy-bmo-push-day-20260922-1/149538 "2026-09-22T22:25:20Z")

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Github Link The following changes have been pushed to bugzilla.mozilla.org: Thanks to Kohei for his work on the newly revised Guided Bug Entry form! If you want to check it out yourself, then click on the Switch to Bug…

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## [Firefox Profiler Deployment (September 22, 2026)](https://discourse.mozilla.org/t/firefox-profiler-deployment-september-22-2026/149536)

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**Author:** [@canova](https://discourse.mozilla.org/u/canova)\
**Replies:** 0\
**Last updated:** [September 22, 2026, 4:42pm UTC](https://discourse.mozilla.org/t/firefox-profiler-deployment-september-22-2026/149536 "2026-09-22T16:42:20Z")

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The latest version of the Firefox Profiler is now live! Check out the full changelog below to see what’s changed: Highlights: \[fatadel\] Show a category breakdown in profiler-cli (#6256) \[fatadel\] Show allocation data …

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## [Firefox DevTools MCP 0.10.4 released](https://discourse.mozilla.org/t/firefox-devtools-mcp-0-10-4-released/149532)

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**Author:** [@jdescottes](https://discourse.mozilla.org/u/jdescottes)\
**Replies:** 0\
**Last updated:** [September 22, 2026, 12:43pm UTC](https://discourse.mozilla.org/t/firefox-devtools-mcp-0-10-4-released/149532 "2026-09-22T12:43:12Z")

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Firefox DevTools MCP (firefox-devtools-mcp) 0.10.4 is out on npm. Changes This release only contains additional hooks and configuration files to register Firefox DevTools MCP on various third-party aggregators, as well…

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## [Firefox DevTools MCP 0.10.3 released](https://discourse.mozilla.org/t/firefox-devtools-mcp-0-10-3-released/149489)

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**Author:** [@jdescottes](https://discourse.mozilla.org/u/jdescottes)\
**Replies:** 0\
**Last updated:** [September 18, 2026, 10:14am UTC](https://discourse.mozilla.org/t/firefox-devtools-mcp-0-10-3-released/149489 "2026-09-18T10:14:45Z")

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Firefox DevTools MCP (firefox-devtools-mcp) 0.10.3 is out on npm. New features: New tool: close\_firefox\_session — ends the browser session: it releases the connection when the server is attached to an existing Firefox…

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## [Happy BMO Push Day! (20260916.1)](https://discourse.mozilla.org/t/happy-bmo-push-day-20260916-1/149466)

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**Author:** [@dkl1](https://discourse.mozilla.org/u/dkl1)\
**Replies:** 0\
**Last updated:** [September 16, 2026, 6:03pm UTC](https://discourse.mozilla.org/t/happy-bmo-push-day-20260916-1/149466 "2026-09-16T18:03:55Z")

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Github Link The following changes have been pushed to bugzilla.mozilla.org: Bug 2069143 - When retrieving comments for a bug(s) via REST API, remove comments that would be collapsed in the web UI unless explicitly ask…

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## [MozPhab 2.19.1 Released](https://discourse.mozilla.org/t/mozphab-2-19-1-released/149464)

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**Author:** [@sheehan](https://discourse.mozilla.org/u/sheehan)\
**Replies:** 0\
**Last updated:** [September 16, 2026, 2:28pm UTC](https://discourse.mozilla.org/t/mozphab-2-19-1-released/149464 "2026-09-16T14:28:36Z")

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Bugs resolved in Moz-Phab 2.19.1: bug 2071003 moz-phab patch --apply-to head moves to a detached HEAD Discuss these changes in #engineering-workflow on Slack or #Conduit Matrix.

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## [Happy BMO Push Day! (20260908.1)](https://discourse.mozilla.org/t/happy-bmo-push-day-20260908-1/149413)

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**Author:** [@dkl1](https://discourse.mozilla.org/u/dkl1)\
**Replies:** 0\
**Last updated:** [September 10, 2026, 2:34am UTC](https://discourse.mozilla.org/t/happy-bmo-push-day-20260908-1/149413 "2026-09-10T02:34:17Z")

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Github Link The following changes have been pushed to bugzilla.mozilla.org: Bug 1205300 - Missing: related documentation “Reporting” Bug 2068120 - Thunderbird access to “Iteration” and “Due Date” fields Bug 2066252 - …

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## [MozPhab 2.19.0 Released](https://discourse.mozilla.org/t/mozphab-2-19-0-released/149411)

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**Author:** [@sheehan](https://discourse.mozilla.org/u/sheehan)\
**Replies:** 0\
**Last updated:** [September 9, 2026, 8:59pm UTC](https://discourse.mozilla.org/t/mozphab-2-19-0-released/149411 "2026-09-09T20:59:03Z")

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Bugs resolved in Moz-Phab 2.19.0: bug 1987220 moz-phab patch --apply-to here should apply to the original base revision and rebase, rather than applying the raw diff on HEAD bug 2016442 add moz-phab list subcommand Di…

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## [Firefox DevTools MCP 0.10.2 released](https://discourse.mozilla.org/t/firefox-devtools-mcp-0-10-2-released/149369)

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**Author:** [@jdescottes](https://discourse.mozilla.org/u/jdescottes)\
**Replies:** 0\
**Last updated:** [September 4, 2026, 1:41pm UTC](https://discourse.mozilla.org/t/firefox-devtools-mcp-0-10-2-released/149369 "2026-09-04T13:41:12Z")

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Firefox DevTools MCP (firefox-devtools-mcp) 0.10.2 is out on npm. New tools: press\_key — sends a single key, optionally with modifiers, to a snapshot element or the focused element (Return, Escape, Tab, arrows, ctrl+s…

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## [PerfCompare just deployed (Sept 3, 2026)](https://discourse.mozilla.org/t/perfcompare-just-deployed-sept-3-2026/149361)

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**Author:** [@csevere](https://discourse.mozilla.org/u/csevere)\
**Replies:** 0\
**Last updated:** [September 3, 2026, 6:34pm UTC](https://discourse.mozilla.org/t/perfcompare-just-deployed-sept-3-2026/149361 "2026-09-03T18:34:30Z")

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The latest version of PerfCompare is now live! This includes the launch of PerfCompare’s Simple View. Read the following blog post, Introducing PerfCompare’s Simple View, to learn more. Check out the change-log below to…

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## [Firefox Profiler Deployment (September 3, 2026)](https://discourse.mozilla.org/t/firefox-profiler-deployment-september-3-2026/149360)

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**Author:** [@canova](https://discourse.mozilla.org/u/canova)\
**Replies:** 0\
**Last updated:** [September 3, 2026, 3:36pm UTC](https://discourse.mozilla.org/t/firefox-profiler-deployment-september-3-2026/149360 "2026-09-03T15:36:56Z")

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The latest version of the Firefox Profiler is now live! Check out the full changelog below to see what’s changed: Highlights: \[Andrew Creskey\] Show which network requests were prefetched (#6259) \[Florian Quèze\] profil…

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## [MozPhab 2.18.0 Released](https://discourse.mozilla.org/t/mozphab-2-18-0-released/149287)

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**Author:** [@sheehan](https://discourse.mozilla.org/u/sheehan)\
**Replies:** 0\
**Last updated:** [August 27, 2026, 6:43pm UTC](https://discourse.mozilla.org/t/mozphab-2-18-0-released/149287 "2026-08-27T18:43:02Z")

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Bugs resolved in Moz-Phab 2.18.0: bug 1898339 moz-phab incorrectly uploads symlinks as text files when using Mercurial bug 2063674 Consider reminding people of their review queue when they push to try or moz-phab bug 2…

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## [Happy BMO Push Day! (20260824.1)](https://discourse.mozilla.org/t/happy-bmo-push-day-20260824-1/149251)

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**Author:** [@dkl1](https://discourse.mozilla.org/u/dkl1)\
**Replies:** 0\
**Last updated:** [August 24, 2026, 8:29pm UTC](https://discourse.mozilla.org/t/happy-bmo-push-day-20260824-1/149251 "2026-08-24T20:29:42Z")

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Github Link The following changes have been pushed to bugzilla.mozilla.org: Bug 1224099 - create 2fa user documentation Bug 1832783 - Wrong error message for exceeding file size Bug 2064475 - phab-bot leaves #release-…

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## [MozPhab 2.17.0 Released](https://discourse.mozilla.org/t/mozphab-2-17-0-released/149223)

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**Author:** [@sheehan](https://discourse.mozilla.org/u/sheehan)\
**Replies:** 0\
**Last updated:** [August 18, 2026, 9:16pm UTC](https://discourse.mozilla.org/t/mozphab-2-17-0-released/149223 "2026-08-18T21:16:16Z")

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Bugs resolved in Moz-Phab 2.17.0: bug 2036748 submit: parallelise per-commit upload + creatediff across the stack bug 2036749 git: skip restoring git checkout in cleanup/finalize when HEAD already on branch bug 2060484 …

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## [MozPhab 2.16.0 and 2.16.1 Released](https://discourse.mozilla.org/t/mozphab-2-16-0-and-2-16-1-released/149211)

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**Author:** [@sheehan](https://discourse.mozilla.org/u/sheehan)\
**Replies:** 0\
**Last updated:** [August 18, 2026, 3:18am UTC](https://discourse.mozilla.org/t/mozphab-2-16-0-and-2-16-1-released/149211 "2026-08-18T03:18:29Z")

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Bugs resolved in Moz-Phab 2.16.1: bug 2063077 Run tests in parallel with pytest-xdist bug 2063810 Obscure error installing MozPhab Bugs resolved in Moz-Phab 2.16.0: bug 2050987 moz-phab self-update fails when instal…

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## [Firefox Profiler Deployment (August 10, 2026)](https://discourse.mozilla.org/t/firefox-profiler-deployment-august-10-2026/149143)

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**Author:** [@canova](https://discourse.mozilla.org/u/canova)\
**Replies:** 0\
**Last updated:** [August 10, 2026, 5:06pm UTC](https://discourse.mozilla.org/t/firefox-profiler-deployment-august-10-2026/149143 "2026-08-10T17:06:03Z")

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The latest version of the Firefox Profiler is now live! Check out the full changelog below to see what’s changed: Highlights: \[fatadel\] Improve discoverability of downloading a local profile (#6216) \[Nazım Can Altınov…

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## [Firefox Profiler Deployment (August 3, 2026)](https://discourse.mozilla.org/t/firefox-profiler-deployment-august-3-2026/149100)

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**Author:** [@canova](https://discourse.mozilla.org/u/canova)\
**Replies:** 0\
**Last updated:** [August 3, 2026, 3:25pm UTC](https://discourse.mozilla.org/t/firefox-profiler-deployment-august-3-2026/149100 "2026-08-03T15:25:22Z")

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The latest version of the Firefox Profiler is now live! Check out the full changelog below to see what’s changed: Highlights: \[Nazım Can Altınova\] Add an “apply source map” button to the profile info panel (#6200) \[Na…

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## [MozPhab 2.15.4 Released](https://discourse.mozilla.org/t/mozphab-2-15-4-released/149050)

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**Author:** [@sheehan](https://discourse.mozilla.org/u/sheehan)\
**Replies:** 0\
**Last updated:** [July 27, 2026, 4:15pm UTC](https://discourse.mozilla.org/t/mozphab-2-15-4-released/149050 "2026-07-27T16:15:32Z")

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Bugs resolved in Moz-Phab 2.15.4: bug 2058150 moz-phab patch crashes with KeyError when a stack relative is not visible to the user Discuss these changes in #engineering-workflow on Slack or #Conduit Matrix.

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## [Happy BMO Push Day! (20260723.{1,2})](https://discourse.mozilla.org/t/happy-bmo-push-day-20260723-1-2/149025)

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**Author:** [@dkl1](https://discourse.mozilla.org/u/dkl1)\
**Replies:** 0\
**Last updated:** [July 23, 2026, 10:34pm UTC](https://discourse.mozilla.org/t/happy-bmo-push-day-20260723-1-2/149025 "2026-07-23T22:34:19Z")

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The following changes have been pushed to bugzilla.mozilla.org: Github Link Bug 2055236 - The column headers in Github PR are barely visible in dark mode Bug 2054574 - Do not auto-assigning Hackbot when submitting a P…

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## [July 22nd Deploy](https://discourse.mozilla.org/t/july-22nd-deploy/149012)

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**Author:** [@csevere](https://discourse.mozilla.org/u/csevere)\
**Replies:** 0\
**Last updated:** [July 22, 2026, 5:36pm UTC](https://discourse.mozilla.org/t/july-22nd-deploy/149012 "2026-07-22T17:36:49Z")

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The latest version of PerfCompare is now live! Check out the change-log below to see the updates: \[kala-moz\] Add KdeModesPanel to expanded view (#1052) Dark Mode Bugs Fix (#1063) Bug 2037556: simplify wording of…

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## [Firefox Profiler Deployment (July 21, 2026)](https://discourse.mozilla.org/t/firefox-profiler-deployment-july-21-2026/149006)

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**Author:** [@canova](https://discourse.mozilla.org/u/canova)\
**Replies:** 0\
**Last updated:** [July 21, 2026, 12:44pm UTC](https://discourse.mozilla.org/t/firefox-profiler-deployment-july-21-2026/149006 "2026-07-21T12:44:35Z")

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The latest version of the Firefox Profiler is now live! Check out the full changelog below to see what’s changed: Highlights: \[fatadel\] Show counter values over time in profiler-cli (#6136) \[Markus Stange\] More typed …

[Next page](https://discourse.mozilla.org/c/firefox-tooling-announcements/521.md?page=1)