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v3.243.0 Feature

This release adds 3 notable features for engineering teams evaluating rollout.

Published 12d Infrastructure as Code
✓ No known CVEs patched
Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

Topics

aws azure cloud cloud-computing containers c#
+10 more
.net fsharp gcp go iac javascript kubernetes python serverless typescript

Affected surfaces

auth

ReleasePort's take

Moderate signal
editorial:auto 11d

Pulumi v3.243.0 adds several CLI enhancements and bug fixes, including a minimal project file on `pulumi project new -y`, temporary claimable accounts for coding agents, markdown‑preferred API output, and stricter confirmation requirements for destructive commands.

Why it matters: The release enforces `--yes` to confirm destructive operations (deployment cancel, stack schedule removal, webhook deletions) when running non‑interactively, adding a mandatory safety gate for automated workflows.

Summary

AI summary

Updates 3.243.0, Bug Fixes, and Miscellaneous across a mixed release.

Changes in this release

Feature Medium

Make pulumi project new -y write a minimal project file with no template

Make pulumi project new -y write a minimal project file with no template

Source: llm_adapter@2026-05-23

Confidence: high

 —
Feature Medium

Allow coding agents to create claimable temporary accounts when not authenticated

Allow coding agents to create claimable temporary accounts when not authenticated

Source: llm_adapter@2026-05-23

Confidence: high

 —
Feature Medium

Suggest pulumi neo in pulumi preview and pulumi up diagnostics output

Suggest pulumi neo in pulumi preview and pulumi up diagnostics output

Source: llm_adapter@2026-05-23

Confidence: high

 —
Feature Medium

Add List to the Go plugin.Provider interface, wired to streaming ResourceProvider.List RPC

Add List to the Go plugin.Provider interface, wired to streaming ResourceProvider.List RPC

Source: llm_adapter@2026-05-23

Confidence: high

 —
Feature Medium

Reserve package names 'pulumi' and 'input' for internal use in sdkgen

Reserve package names 'pulumi' and 'input' for internal use in sdkgen

Source: llm_adapter@2026-05-23

Confidence: high

 —
Feature Medium

Prefer text/markdown over JSON in pulumi api when an endpoint produces both

Prefer text/markdown over JSON in pulumi api when an endpoint produces both

Source: llm_adapter@2026-05-23

Confidence: high

 —
Feature Medium

Add resource support to pulumi do command

Add resource support to pulumi do command

Source: llm_adapter@2026-05-23

Confidence: high

 —
Feature Medium

Pressing Esc in pulumi neo now clears the input box when it has text; with an empty box, Esc still cancels the agent's current turn

Pressing Esc in pulumi neo now clears the input box when it has text; with an empty box, Esc still cancels the agent's current turn

Source: llm_adapter@2026-05-23

Confidence: high

 —
Feature Medium

Alias pulumi new to pulumi project new

Alias pulumi new to pulumi project new

Source: llm_adapter@2026-05-23

Confidence: high

 —
Bugfix Medium

Don't silently ignore ... in function arguments within pcl

Don't silently ignore ... in function arguments within pcl

Source: llm_adapter@2026-05-23

Confidence: high

 —
Bugfix Medium

Cache package references per-deployment in generated SDKs to fix concurrent inline programs (Node.js)

Cache package references per-deployment in generated SDKs to fix concurrent inline programs (Node.js)

Source: llm_adapter@2026-05-23

Confidence: high

 —
Bugfix Medium

Error out when setting up journaler fails in backend/service

Error out when setting up journaler fails in backend/service

Source: llm_adapter@2026-05-23

Confidence: high

 —
Bugfix Medium

Require --yes to confirm pulumi deployment cancel, stack schedule remove, org webhook remove, and stack webhook remove when running non-interactively

Require --yes to confirm pulumi deployment cancel, stack schedule remove, org webhook remove, and stack webhook remove when running non-interactively

Source: llm_adapter@2026-05-23

Confidence: low

 —
Bugfix Medium

Require `--yes` to confirm destructive CLI commands when running non-interactively

Require `--yes` to confirm destructive CLI commands when running non-interactively

Source: granite4.1:30b@2026-05-23-audit

Confidence: low

 —
Refactor Medium

Rename plugin ls to list and rm to remove in cli/plugin commands

Rename plugin ls to list and rm to remove in cli/plugin commands

Source: llm_adapter@2026-05-23

Confidence: low

 —
Other Medium

Update pulumi package add --agent documentation hint to use <type-token> placeholder for /docs/... URL

Update pulumi package add --agent documentation hint to use <type-token> placeholder for /docs/... URL

Source: llm_adapter@2026-05-23

Confidence: low

 —
Full changelog

3.243.0 (2026-05-22)

Features

  • [cli] Make the pulumi project new -y command write a minimal project file with no template
    #22847

  • [cli] Allow coding agents to create claimable temporary accounts when not authenticated

  • [cli] Suggest pulumi neo in pulumi preview and pulumi up diagnostics output
    #23326

  • [sdk] Add List to the Go plugin.Provider interface, wired to the streaming ResourceProvider.List RPC
    #23287

  • [sdkgen] Reserve the package names 'pulumi' and 'input' for internal use
    #23321

  • [cli/cloud] Prefer text/markdown over JSON in pulumi api when an endpoint produces both
    #22963

  • [cli/do] Add resource support to pulumi do
    #23215

  • [cli/neo] Pressing Esc in pulumi neo now clears the input box when it has text; with an empty box, Esc still cancels the agent's current turn
    #23299

  • [cli/new] Alias pulumi new to pulumi project new
    #23265

Bug Fixes

  • [cli] Require --yes to confirm pulumi deployment cancel, pulumi stack schedule remove, pulumi org webhook remove, and pulumi stack webhook remove when running non-interactively
    #23264

  • [pcl] Don't silently ignore ... in function arguments
    #23309

  • [sdkgen/nodejs] Cache package references per-deployment in generated SDKs to fix concurrent inline programs
    #23068

  • [backend/service] Error out when setting up journaler fails
    #22671

Miscellaneous

  • [cli/package] Update the pulumi package add --agent documentation hint to use <type-token> as the placeholder for the /docs/... URL
    #23294

  • [cli/plugin] Rename plugin ls to list and rm to remove
    #23291

View diff on GitHub

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About pulumi

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Related context

Earlier breaking changes

  • v3.238.0 `--format` flag renamed to `--output` on `pulumi api` and subcommands.
  • v3.238.0 `pulumi cloud api` renamed to `pulumi api`.

Beta — feedback welcome: [email protected]