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spec-kit

v0.12.16 Feature

This release adds 2 notable features for engineering teams evaluating rollout.

✓ No known CVEs patched
Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

Topics

ai copilot development engineering prd spec
+1 more
spec-driven

Summary

AI summary

Updates workflows, chore, and presets across a mixed release.

Changes in this release

Feature Low

Exposes workflow source directory to workflow steps.

Exposes workflow source directory to workflow steps.

Source: llm_adapter@2026-07-15

Confidence: high

Feature Low

Adds PatchWarden Evidence Pack extension to community catalog.

Adds PatchWarden Evidence Pack extension to community catalog.

Source: llm_adapter@2026-07-15

Confidence: high

Dependency Low

Updates Coding Standards Drift Control extension to v0.4.0.

Updates Coding Standards Drift Control extension to v0.4.0.

Source: llm_adapter@2026-07-15

Confidence: high

Bugfix Medium

Fixes cryptic crash when non-string filter args are used in workflows.

Fixes cryptic crash when non-string filter args are used in workflows.

Source: llm_adapter@2026-07-15

Confidence: high

Bugfix Medium

Fixes crash when max_concurrency is .inf by falling back to sequential execution.

Fixes crash when max_concurrency is .inf by falling back to sequential execution.

Source: llm_adapter@2026-07-15

Confidence: high

Bugfix Medium

Fixes crash in while/do-while steps when steps are not a list.

Fixes crash in while/do-while steps when steps are not a list.

Source: llm_adapter@2026-07-15

Confidence: high

Refactor Low

Ports git extension scripts from shell to Python.

Ports git extension scripts from shell to Python.

Source: llm_adapter@2026-07-15

Confidence: high

Full changelog

Install

uv tool install specify-cli --from git+https://github.com/github/[email protected]
specify init my-project

What's Changed

  • chore: bump version to 0.12.16
  • fix(workflows): raise a clear error, not a cryptic crash, on non-string filter args (#3522)
  • feat(workflows): expose workflow source directory to steps (#3469)
  • fix(workflows): fan-out max_concurrency .inf falls back to sequential, not crash (#3521)
  • Update Coding Standards Drift Control extension to v0.4.0 (#3540)
  • fix(presets): seed constitution from preset constitution-template (#3272) (#3276)
  • docs: add PyPI as second supported install route (#3425) (#3516)
  • fix(workflows): fail while/do-while steps on non-list steps instead of crashing (#3519)
  • Add PatchWarden Evidence Pack extension to community catalog (#3514)
  • feat(extensions): port git extension scripts to Python (#3400)
  • chore: release 0.12.15, begin 0.12.16.dev0 development (#3513)

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Related context

Earlier breaking changes

  • v0.10.0 Legacy AI flags (--ai, --ai-commands-dir, --ai-skills) removed.
  • v0.10.0 Git extension is now opt-in; --no-git flag removed.

Beta — feedback welcome: [email protected]