Show HN: AxiomCore – a Claude plugin that keeps your projects structured

I'll pull the GitHub README and HN thread so the paragraphs stay grounded in real product details, not invented numbers.**AxiomCore** landed on Hacker News as a Show HN from **protonium-labs**: a **Claude** plugin (Claude Code and Claude Cowork) that turns the assistant into a project-and-routine management agent instead of a chat that answers and forgets. The public source is the GitHub repo at https://github.com/protonium-labs/axiomcore-plugin; the thread sat at **1 point** and **0 comments** when this signal was captured. Positioning is explicit: enforced structure for project managers, consultants, and anyone running projects or routines, not another free-form coding helper.

Mechanically, the system is workspace-local. State lives in the folder (`axiom-config.md`, `CLAUDE.md`, `vault/`) with no global plugin state, so a new folder is a clean install. Structure is fixed: numbered project folders (for example `01-launch`, `02-marketing`) and globally unique task IDs (for example `PW-01-03`). The agent runs a **plan → your approval → step-by-step execution** loop; structural changes do not land without approval. Memory is a plain-markdown, cross-linked wiki vault meant to be browsable in **Obsidian**. Skills cover onboarding (`/axiom`), projects (`/project`), workstations/routines (`/ws`), document ingest (`/ingest`), health checks (`/lint`), capability install (`/setup`), optional todos (including a Notion Kanban mirror), and optional **Dev Planning** (`/dev`: product spec → tech spec → delivery plan → feature documents). Optional modules also cover **Voice** (`soul.md`) and **Brand**. Two tiers exist: simple (2-level projects) and advanced (3-level hierarchies, exposed ID protocol, `/dev`). Subagents include a planner, reviewer, and vault-gardener. Install path is the Protonium marketplace plugin, then `/axiom start` for a short onboarding interview and scaffold. License is **MIT**; dev-planning methodology is adapted from the MIT-licensed **Superpowers** project.

For engineers and builders, the interesting claim is discipline as product: naming, placement, and registries are applied on every action, with `/lint` auditing broken links, orphan pages, naming violations, and registry drift. That targets a real failure mode of agentic coding sessions—context sprawl, invented paths, and tasks that appear without an explicit OK. The optional **Dev Planning** path is the bridge from “keep my PM workspace tidy” into software delivery artifacts that stay immutable once written. Because the vault is owned markdown rather than a closed vendor store, the structure survives session resets and tool switches.

Market context is the growing Claude plugin and skill ecosystem: marketplace install, skill commands, and subagents map onto how teams already extend Claude Code/Cowork. AxiomCore sits closer to personal operating systems and PM tooling (wiki memory, routines, approval gates) than pure code-generation plugins, while still shipping a software-planning module. Overlap with Superpowers-style planning workflows is acknowledged in the license notes; differentiation is the enforced hierarchy, ID protocol, and lintable vault rather than one-shot prompt packs. Early HN traction is thin (single point, no comments yet), so the signal is discovery-stage rather than consensus.

Practical takeaway: if your Claude sessions already create files and plans but leave folders inconsistent, evaluate AxiomCore in a throwaway workspace via the Protonium marketplace install and `/axiom start`, then run `/lint` after a real project scaffold. Watch whether the approval gate slows useful work or cuts silent drift; whether simple vs advanced tier matches how you actually name work; and whether optional modules (Todos/Notion, Brand, Dev Planning) stay optional in practice or become required for value. Next checks are GitHub Issues/Discussions activity, how well multi-workspace isolation holds when sessions leak memory, and whether the structure engine stays usable once a vault grows large.