Agent skill

Bmad Tech Spec

by aj-geddes in aj-geddes/claude-code-bmad-skills

Quick Flow lightweight technical specification for small-scope work (1-15 stories).

Custom licenceAuto-check passedProduct & Project Management

Install Bmad Tech Spec

skills CLI
$ npx skills add aj-geddes/claude-code-bmad-skills --skill bmad-tech-spec -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install aj-geddes/claude-code-bmad-skills bmad-tech-spec --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/aj-geddes/claude-code-bmad-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/bmad-planning-orchestrator/skills/bmad-tech-spec .claude/skills/bmad-tech-spec && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
bmad-tech-spec
GitHub stars
488
Token cost
~1.6k tokens
SKILL.md length
681 words
Files
2
Skills in repo
20
Repo updated
First seen
Licence
Custom licence

At a glance

Quick Flow lightweight technical specification for small-scope work (1-15 stories).

  • Works in 5 steps: Identify intent → Gather context → Draft or revise → …
  • The user says: write a tech spec
  • SKILL.md covers Workflow, Validation Checklist and Subagent Strategy
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Bmad Tech Spec is an agent skill from aj-geddes/claude-code-bmad-skills. Quick Flow lightweight technical specification for small-scope work (1-15 stories). Replaces the full PRD + architecture pair when scope is small and requirements are clear. Produces bmad-output/tech-spec.md as the single planning artifact before story creation. Use when the user says: "write a tech spec", "create a technical specification", "I need a tech spec for this feature", "quick spec", "small project spec", "we don't need a full PRD", "just a tech spec", "spec out this change", "document this feature"…

Its SKILL.md is about 1.6k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `templates/tech-spec.template.md`).

It sits in Product & Project Management, covering PRD writing. The repository describes itself as: BMAD Method skills for Claude Code - Auto-detection, Memory integration, Slash commands. Transform Claude Code into a BMAD-powered development environment.

When your agent uses it

  • The user says: write a tech spec
  • Create a technical specification
  • I need a tech spec for this feature
  • Small project spec

Example prompts

  • “write a tech spec”
  • “create a technical specification”
  • “I need a tech spec for this feature”
  • “/bmad-tech-spec”

Requirements

  • Pre-approved tools (allowed-tools): Read, Write, Edit, Glob, Grep, WebSearch, WebFetch, TodoWrite

Workflow steps

5 steps, taken from the step headings in SKILL.md.

  1. Identify intent
  2. Gather context
  3. Draft or revise
  4. Write output
  5. Confirm next steps

What it can do on your machine

Read from SKILL.md and the folder at commit 27dca0e. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Write
    • Edit
    • Glob
    • Grep
    • WebSearch
    • WebFetch
    • TodoWrite

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • github.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Bmad Tech Spec loads about 1.6k tokens when it runs. Until then it costs about 230 tokens; SKILL.md has 681 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~230
When it runs · the whole SKILL.md, loaded when a task matches
~1.6k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 681 words (~1,576 tokens).

“This skill produces a focused tech-spec.md for Quick Flow work: small, well-scoped features or changes that sit in the 1-15 story range. It consolidates the product rationale, technical approach, and story backlog into a single lightweight document, skipping the separate…”

— opening of SKILL.md by aj-geddes, Custom licence
name
bmad-tech-spec
allowed-tools
Read, Write, Edit, Glob, Grep, WebSearch, WebFetch, TodoWrite

Read the full SKILL.md on GitHub

Files

SKILL.md and 1 other file in bmad-planning-orchestrator/skills/bmad-tech-spec of aj-geddes/claude-code-bmad-skills.

  • SKILL.md
  • templates/tech-spec.template.md

Open the folder on GitHubat commit 27dca0e

Compare with similar skills

Bmad Tech Spec next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Bmad Tech Spec compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Bmad Tech Spec this skillaj-geddes/claude-code-bmad-skills488—~1.6kAutomated safety check: PassCustom licence
CCPM Project Managementautomazeio/ccpm8.4k—~1.1kAutomated safety check: PassMIT
Ralph Tui Create Beadssubsy/ralph-tui2.5k1 repos~2.6kAutomated safety check: PassMIT
Trellis Brainstormanjiemo/SunnyBeach1787 repos~4kAutomated safety check: PassApache-2.0
Ralph Tui Create Beads Rustsubsy/ralph-tui2.5k1 repos~2.8kAutomated safety check: PassMIT
Ralph Tui Create JSONsubsy/ralph-tui2.5k1 repos~2.6kAutomated safety check: PassMIT

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Questions about Bmad Tech Spec

What does Bmad Tech Spec do?

Quick Flow lightweight technical specification for small-scope work (1-15 stories). Bmad Tech Spec is an agent skill from aj-geddes/claude-code-bmad-skills. Quick Flow lightweight technical specification for small-scope work (1-15 stories).

When should I use Bmad Tech Spec?

Bmad Tech Spec fits situations like: the user says: write a tech spec; create a technical specification; I need a tech spec for this feature; small project spec.

How do I install Bmad Tech Spec in Claude Code?

Run `npx skills add aj-geddes/claude-code-bmad-skills --skill bmad-tech-spec -a claude-code`. Or copy the skill folder (bmad-planning-orchestrator/skills/bmad-tech-spec in aj-geddes/claude-code-bmad-skills) into .claude/skills/bmad-tech-spec in your project. Claude Code loads it when a task matches its description.

How do I install Bmad Tech Spec in Codex?

Run `npx skills add aj-geddes/claude-code-bmad-skills --skill bmad-tech-spec -a codex`. Or copy the skill folder (bmad-planning-orchestrator/skills/bmad-tech-spec in aj-geddes/claude-code-bmad-skills) into .agents/skills/bmad-tech-spec in your project. Codex loads it when a task matches its description.

Can I use Bmad Tech Spec in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aj-geddes/claude-code-bmad-skills --skill bmad-tech-spec -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/bmad-tech-spec, .gemini/skills/bmad-tech-spec, .github/skills/bmad-tech-spec and .opencode/skills/bmad-tech-spec in your project.

What does Bmad Tech Spec need to run?

SKILL.md names no scripts, command-line tools or credentials: Bmad Tech Spec is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Write, Edit, Glob, Grep, WebSearch, WebFetch, TodoWrite.

Does Bmad Tech Spec access the network?

SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.

Is Bmad Tech Spec safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Bmad Tech Spec use?

Bmad Tech Spec has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Bmad Tech Spec use?

About 1.6k tokens (SKILL.md is roughly 6.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Bmad Tech Spec?

Skills that share tags, products or a category with Bmad Tech Spec: CCPM Project Management (automazeio/ccpm, 8.4k stars), Ralph Tui Create Beads (subsy/ralph-tui, 2.5k stars), Trellis Brainstorm (anjiemo/SunnyBeach, 178 stars) and Ralph Tui Create Beads Rust (subsy/ralph-tui, 2.5k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Bmad Tech Spec?

aj-geddes (a GitHub user) maintains it in aj-geddes/claude-code-bmad-skills, which has 488 GitHub stars. The repository holds 20 skills in this directory. The repository was last updated on June 20, 2026.

Source: aj-geddes/claude-code-bmad-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.