Files
magnus919_agent-skills/spec-driven-development
Magnus HedemarkandGitHub e10508b034 feat(bmad): add BMad control-plane protocol skill (#400)
* feat(bmad): add BMad control-plane protocol skill

New standalone methodology skill that lets any agent run the BMad method
(Breakthrough Method of Agile AI-Driven Development) as a harness-agnostic
control-plane protocol: five-field intent contracts, direct/bounded/initiative
classification, review-as-triage, failure routing by layer, and autonomy gating
with machine-readable spec status.

- SKILL.md protocol core with progressive disclosure + When not to use
- README.md human-facing install guide
- 9 references: protocol, classification, spec, lifecycle, project-context,
  review-and-failure-routing, autonomy, party-mode, adoption
- 4 templates: SPEC, INTENT, STORY, REVIEW
- scripts/check-spec.py + 16 tests (stdlib, deterministic spec validation)
- evals/evals.json: 9 output-quality cases
- Routing seams from bmad to adjacent skills and back from
  spec-driven-development, product-shaping, implementation-planning, neckbeard
- Catalog updates: root README, skill-triggers, marketplace/plugin/llms.txt

Closes #399

* fix(bmad): address droid-review findings

- check-spec.py: skip headings inside fenced/indented code blocks so a spec
  cannot PASS on section text that only appears in a code sample
- check-spec.py: catch UnicodeDecodeError on non-UTF-8 files and report FAIL
  instead of crashing
- STORY.md template: add created key for resumability/traceability parity
- SPEC.md template: split in-progress and in-review status bullets
- add 2 regression tests (heading-in-fence, non-UTF-8)

* fix(bmad): address droid-review round 2

- check-spec.py: read specs with utf-8-sig so a UTF-8 BOM cannot silently
  disable the frontmatter status check
- check-spec.py: handle standard YAML inline comments after status values
  (status: draft  # pending review) without a false FAIL
- references/protocol.md: make lifecycle phrasing consistent with
  lifecycle.md — four phases plus a learning closeout
- add 2 regression tests (BOM, inline comment)

* fix(bmad): tolerate trailing whitespace on frontmatter delimiters

A spec whose --- delimiter lines carry trailing spaces or tabs would silently
disable the status check and let an invalid status PASS. Relax the delimiter
pattern and add a regression test.

* fix(bmad): ignore inline comments in quoted status values

* fix(bmad): tolerate leading blank lines before frontmatter

* fix(bmad): fail closed on unparseable frontmatter, matching fence markers

Address droid-review round 5 and 6 findings as a single closed class:
- Fail closed when a file opens with a --- delimiter that cannot be parsed,
  so no whitespace/frontmatter permutation can silently disable the status
  check (previously: unparseable frontmatter was treated as 'no status'
  warning, letting an invalid status PASS).
- Track fence opener markers in collect_headings so a mismatched fence no
  longer closes a code block early (false-PASS on missing sections) and an
  unclosed fence no longer swallows real headings.
- Accept empty well-formed frontmatter (---\n---) and closing delimiters
  without a trailing newline.
- STORY.md template: parent-spec points at the sibling SPEC.md.
- README: status vocabulary is not a strict linear chain; blocked is a
  resumable routing signal.

Whitespace/frontmatter mutation sweep: 9 formatting variants x valid/invalid
status all verdict correctly; malformed delimiters fail closed. 29 tests.
2026-08-24 08:05:43 -04:00
..
2026-07-11 09:24:58 -04:00

Spec-Driven Development for AI Software Factories

A methodology where structured specifications are the executable input to an AI code generation pipeline. Quality gates enforce correctness at each phase.

Why Install This Skill

When your agent loads this skill, it becomes a software factory designer who can:

  • Design an SDD pipeline — 5-phase pipeline from SPECIFY to DELIVER with 4 phase gates
  • Write great specs — 7 spec quality gates that separate precise specs from vague ones
  • Choose spec methodologies — BDD, OpenAPI, AsyncAPI, DbC, TLA+, ADRs, C4 — matched to your context
  • Encode NFRs — performance, security, observability requirements in machine-readable format
  • Translate between formats — PRD → SPEC.md → Gherkin → OpenAPI
  • Handle gate recovery — revision workflows when specs fail review

What You Get

Directory Purpose
SKILL.md Pipeline overview, loading guide, methodology quick-pick
references/ 9 reference files: overview, pipeline, quality gates, phase gates, methodology matrix, NFR encoding, format translation, critiques, example spec
templates/ 4 spec templates
scripts/ 2 validation scripts

Triggers

Load this when designing a spec-driven pipeline, writing an AI-ready specification, or setting up quality gates for AI code generation.

Requirements

Tool-agnostic — works with Claude Code, Cursor, Hermes Agent, Devin, OpenHands, droid, or any AI coding agent.

Quick Start

Start with the setup and first workflow in SKILL.md, then use the linked resources for the specific task you need to complete.