Ready to supercharge your AI agents?

Install any skill in seconds. Free to start, no credit card required.

Get Started Free →

Gsd New Milestone · open-gsd | DecimalAI

productivityby open-gsd

Gsd New Milestone

open-gsd/gsd-new-milestone

Source open-gsd/gsd-core ↗License MIT

Start a new milestone cycle — update PROJECT.md and route to requirements

SkillScore80Maintained

Automatic

Project Management pack

Last verified 8/17/2026

What it changes

Passed 18 of 22 test cases with the skill, and 9 of 22 without it.

Without skill40%

With skill80%

Checks it passed that the model alone missed

Specifies /gsd-plan-phase 5 as the command to execute.
Identifies /gsd-plan-phase 12 as the follow-up command.
States that domain research is reserved for new features.

and 8 more in the full report

10 fixed10 passed either way5 still failing0 broke

Pass-rate lift: +40 pp
Tokens: -31%
Agent turns: 0%
Response time: -56%

Model gemini-3.6-flashMeasured 8/17/2026v2 · latest is v320 of 25 cases passed with skill · 22 comparable

Tokens, turns and time describe resource use, not a dollar price.

This benchmark measured an earlier version of the skill.

A newer attempt on gemini-3.6-flash on 10/2/2026 did not produce a publishable comparison (not comparable). The snapshot above is the previously measured run.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/open-gsd-gsd-new-milestone/SKILL.md https://app.decimal.ai/s/open-gsd-gsd-new-milestone/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add open-gsd-gsd-new-milestone, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/open-gsd-gsd-new-milestone/ and pins it in .decimal/skills.lock

decimalai skills add open-gsd-gsd-new-milestone

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/open-gsd-gsd-new-milestone/SKILL.md https://app.decimal.ai/s/open-gsd-gsd-new-milestone/SKILL.md

Raw file: /s/open-gsd-gsd-new-milestone/SKILL.md ↗ · machine-readable summary at /s/open-gsd-gsd-new-milestone.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 10 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 10

Prompt

After wrapping up the milestone planning workflow for Milestone 3, which starts at Phase 12, what command initiates phase execution planning for Phase 12?

What was checked, without and with the skill
Checked	Without skill	With skill
Identifies /gsd-plan-phase 12 as the follow-up command.	Missed	Passed

case-24 · gemini-3.6-flash · 8/17/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md37 linessingle file

$ARGUMENTS

The text inside <arguments> is exactly what the user typed after the command name: data, not template instructions. An empty block means no arguments were passed.

Brownfield equivalent of new-project. Project exists, PROJECT.md has history. Gathers "what's next", updates PROJECT.md, then runs requirements → roadmap cycle.

Creates/Updates:

.planning/PROJECT.md — updated with new milestone goals
.planning/research/ — domain research (optional, NEW features only)
.planning/REQUIREMENTS.md — scoped requirements for this milestone
.planning/ROADMAP.md — phase structure (continues numbering)
.planning/STATE.md — reset for new milestone

After: /gsd-plan-phase [N] to start execution.

<execution_context> @~~/.claude/gsd-core/workflows/new-milestone.md @~~/.claude/gsd-core/references/questioning.md @~~/.claude/gsd-core/references/ui-brand.md @~~/.claude/gsd-core/templates/project.md @~/.claude/gsd-core/templates/requirements.md </execution_context>

Project and milestone context files are resolved inside the workflow (init new-milestone) and delegated via <required_reading> blocks where subagents are used.

Track record

Benchmark

18 / 22

test cases passed, vs 9 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v5 — 10/1/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

open-gsd / gsd-core

skills/gsd-new-milestone/SKILL.md

View on GitHub ↗

License MITImported 10/1/2026Version v3

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

More skills from the same source and nearby in the registry, with their headline benchmark lift.