@smithy/smithy-client breaking changes
Every breaking API change we have recorded in @smithy/smithy-client on npm: 261 breaking changes in 1 version. Below are its newest version, removals and renames first, each with its source.
Newest change May 8, 2026
On this page
4.13.0
- Removed
Client.config
Client.config was removed in @smithy/smithy-client 4.13.0 npmjs.com - Removed
Client.constructor
new Client() was removed in @smithy/smithy-client 4.13.0 npmjs.com - Removed
Client.destroy
Client.destroy was removed in @smithy/smithy-client 4.13.0 npmjs.com - Removed
Client.initConfig
Client.initConfig was removed in @smithy/smithy-client 4.13.0 npmjs.com - Removed
Client.middlewareStack
Client.middlewareStack was removed in @smithy/smithy-client 4.13.0 npmjs.com - Removed
Client.send
Client.send was removed in @smithy/smithy-client 4.13.0 npmjs.com - Removed
Command.classBuilder
Command.classBuilder was removed in @smithy/smithy-client 4.13.0 npmjs.com - Removed
Command.input
Command.input was removed in @smithy/smithy-client 4.13.0 npmjs.com - Removed
Command.middlewareStack
Command.middlewareStack was removed in @smithy/smithy-client 4.13.0 npmjs.com - Removed
Command.resolveMiddleware
Command.resolveMiddleware was removed in @smithy/smithy-client 4.13.0 npmjs.com
And 251 more in this version.
Check your code
These are the changes. To see which of them reach your code, scan a public repository, or have your coding agent call check_code with your manifest or lockfile over MCP. The API reads every change in every version, not only the newest. On Team and up, a fix pull request opens for the changes that reach a connected repository. Nothing merges or deploys.
Put your code on continuous management.
Scan a public repository now, or give your agent one line.
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Tell your agent what changed since it was trained.
claude mcp add --transport http since https://api.since.dev/mcp