Marcus Chang
Community@hardness1020 · SF Bay Area
Building AI agents and developer tooling · agent architectures, memory systems, and workflow engines · writing tutorials that teach agents from scratch
Agent Skills by Marcus Chang
Showing 11 vetted skills indexed across 2 GitHub repositories.
hardness1020prompt-engineering
Organize modular system prompts and evaluation patterns for LLM deployment.
hardness1020create-feature-spec
Generate Stage E feature specs with API design and acceptance criteria.
hardness1020record-decision
Create ADR files with standardized templates and validate them using validate_adr.py.
hardness1020analyze-codebase
Automate Stage B codebase discovery and analysis for the VibeFlow workflow.
hardness1020clarify-demand
Clarify demand and feasibility before work-item registration with an Intake Brief.
hardness1020define-tech-spec
Create and validate Stage C tech specs with architecture definitions and data contracts.
hardness1020validate-checkpoint
Validate VibeFlow workflow checkpoints and generate JSON reports with exit codes.
hardness1020manage-work
Register work items, create feat/<slug> branches, and track progress via docs/workflow-state.yaml.
hardness1020prepare-release
Orchestrate release preparation across Stages I–L with spec reconciliation, OP-NOTES, deployment, and retrospective updates.
hardness1020define-prd
Create and validate Stage A PRDs with required sections and MoSCoW scope formatting.
hardness1020run-tdd
Coordinate TDD stages F RED, G GREEN, and H REFACTOR for VibeFlow.