docs: document overriding default middleware by name#4701
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Nishitha M (imnishitha) merged 14 commits intoJul 7, 2026
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Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
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Thanks for opening a docs PR, Nishitha M (@imnishitha)! When it's ready for review, please add the relevant reviewers:
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mostly phrasing changes: I found some sentences hard to follow. The Accorrdion has to entirely be in the python flag otherwise we'll have an empty accordion for javascript |
Naomi Pentrel (npentrel)
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ccurme (ccurme)
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Co-authored-by: ccurme <chester.curme@gmail.com>
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## Description Adds a single consolidated changelog entry for the `deepagents` 0.7.0 alpha releases, covering the `delete` filesystem tool, `write_file` overwrite behavior, default middleware override by name, and the `FilesystemMiddleware` tools allowlist (already documented in #4746, #4680, #4701). Individual alpha versions (a1, a2, ...) are not called out separately. ## Test Plan - [ ] `npx markdownlint-cli src/oss/python/releases/changelog.mdx` — no new lint errors introduced by this change _Opened collaboratively by Nishitha Madhu and open-swe_ --------- Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com> Co-authored-by: Lauren Hirata Singh <lauren@langchain.dev>
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Description
Depends on:
Documents two related Python deepagents behaviors:
middleware=(or SubAgent's middleware) instance whose.namematches a default replaces that default in place instead of erroring on duplicate middleware. Updates the default middleware stack, themiddleware=table row, and theSubAgent.middlewarefield description, and adds a new "Override a default middleware instance" section with an example.FilesystemMiddlewarefor enabling or disabling individual built-in filesystem tools (ls, read_file, write_file, edit_file, delete, glob, grep, execute), which relies on the middleware-override behavior above to swap in a restrictedFilesystemMiddlewareinstance. Adds a "Restricting filesystem tools" example.Scoped to Python docs only (:::python fences), since both changes only shipped in the Python SDK.
Test Plan
Opened collaboratively by Nishitha Madhu and open-swe