Archcore icon

Archcore

Spec-driven development and context engineering for Claude Code, Cursor, Codex, and GitHub Copilot — backed by project context in Git.

archcore/archcore · v0.10.11 · Development & Workflow

Archcoresafe

Trust Score

77

Security

95

Surfaces

5

What is Archcore?

Archcore is a published development & workflow plugin for AI coding agents in the claude-code ecosystem, developed by Archcore and distributed through the HOL AI plugin registry. Spec-driven development and context engineering for Claude Code, Cursor, Codex, and GitHub Copilot — backed by project context in Git.

Canonical slug
archcore/archcore
Version
v0.10.11 · updated Oct 2, 2026

Trust & Reputation

HOL Trust Score
77

Factor Analysis

Per-metric points (0–100 each) combined via a weighted average into the overall score.

Installability
100pts
Maintenance
0pts
MCP Posture
100pts
Plugin Security
95pts
Provenance
70pts
Publisher Quality
75pts

Registry Snapshot

Publisher verification
No
Marketplace source
Unknown
Scanner
Broker fallback
Safety label
safe
Digest verified
Yes
4 bundled skills — copy or download SKILL.mdOpen skills

Trust & reputation

Trust & Reputation

HOL Trust Score
77

Factor Analysis

Per-metric points (0–100 each) combined via a weighted average into the overall score.

Installability
100pts
Maintenance
0pts
MCP Posture
100pts
Plugin Security
95pts
Provenance
70pts
Publisher Quality
75pts

Provenance

Plugin root
plugins/archcore
Source repo
https://github.com/archcore-ai/archcore
Source commit
9fc638f78627…
Publisher verified
No
Owner verified
Not owner verified

Continuous scanner CI not detected

This plugin remains listed. Its overall trust score is reduced by 10% because security checks are not maintained in the source repository's CI.

Optional: maintain the scanner in the source repository's CI to receive the full trust score. Listing does not require that change.

Verified badge not detected

Add the HOL verified badge to the repository README to score +2% trust. Plugin owners can open that pull request from Guard Plugins.

Security Posture

safe
Safety label
95
Security score
0
High findings
Provider
registry-broker-fallback
Grade
A · safe
Version
Unknown
cisco-skill-scanner: unknown

Findings

lowoperational-securitysupply-chain.lockfile-missing

Repository snapshot does not include a lockfile.

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

Archcore — Frequently asked questions

What is Archcore?
Archcore is an AI plugin in the HOL registry. Spec-driven development and context engineering for Claude Code, Cursor, Codex, and GitHub Copilot — backed by project context in Git.
How do I install Archcore?
Install Archcore in your harness: Codex — codex plugin marketplace add archcore-ai/archcore; Claude Code — /plugin marketplace add archcore-ai/archcore; Cursor — npx skills add archcore-ai/archcore. Full step-by-step guidance is on the HOL plugin page.
How do I install Archcore in Codex?
To install Archcore in Codex, start with codex plugin marketplace add archcore-ai/archcore. The complete step-by-step install guide for Codex is on the HOL plugin page.
How do I install Archcore in Claude Code?
To install Archcore in Claude Code, start with /plugin marketplace add archcore-ai/archcore. The complete step-by-step install guide for Claude Code is on the HOL plugin page.
How do I install Archcore in Cursor?
To install Archcore in Cursor, start with npx skills add archcore-ai/archcore. The complete step-by-step install guide for Cursor is on the HOL plugin page.
Is Archcore free?
Pricing for Archcore is published on its HOL plugin page when the maker schedules a launch.
Who publishes Archcore?
Archcore is published by Archcore and listed on HOL.
Is Archcore available now?
Archcore availability is listed on its HOL plugin page.

Install Guidance

Install in Claude Code

Install through the Claude Code plugin marketplace.

Claude Code plugin docs
  1. 1

    Add the marketplace

    Run this inside a Claude Code session.

    claude code
  2. 2

    Install the plugin

    Use the plugin name and the marketplace name shown by the previous command.

    claude code
  3. 3

    Scripted alternative

    Non-interactive equivalent for scripts and CI pipelines. Add --scope project to pin the install to one repository.

    shell

Plugin Manifest

{
  "name": "archcore",
  "description": "Spec-driven development and context engineering for AI coding agents, backed by project context in Git.",
  "version": "0.10.11",
  "author": {
    "name": "Archcore",
    "url": "https://archcore.ai"
  },
  "license": "Apache-2.0",
  "homepage": "https://archcore.ai/plugin",
  "repository": "https://github.com/archcore-ai/archcore",
  "keywords": [
    "codex",
    "codex-cli",
    "agents-md",
    "mcp",
    "ai-agents",
    "ai-coding",
    "coding-agents",
    "project-context",
    "context",
    "context-engineering",
    "architecture",
    "adr",
    "knowledge-management",
    "rules",
    "decisions",
    "conventions",
    "git-native",
    "skills",
    "subagents",
    "spec-driven-development",
    "documentation",
    "specs"
  ],
  "skills": "./",
  "hooks": "./hooks/codex.hooks.json",
  "mcpServers": "./.registry/mcp.json",
  "interface": {
    "displayName": "Archcore",
    "developerName": "Archcore",
    "shortDescription": "Spec-driven development and context engineering for AI coding agents.",
    "longDescription": "Archcore brings spec-driven development and automatic project context to Codex. Specs, architecture, decisions, rules, and plans live in Git and are applied as the agent works.",
    "category": "Productivity",
    "capabilities": [
      "Read",
      "Write"
    ],
    "websiteURL": "https://archcore.ai",
    "privacyPolicyURL": "https://archcore.ai/privacy",
    "termsOfServiceURL": "https://github.com/archcore-ai/archcore/blob/main/docs/TERMS.md",
    "defaultPrompt": [
      "Use Archcore to review this work against project decisions",
      "Use Archcore to plan this change",
      "Use Archcore to check whether source edits need doc updates"
    ],
    "brandColor": "#2563EB",
    "composerIcon": "./assets/icon.png",
    "logo": "./assets/logo.png",
    "screenshots": []
  },
  "registryIndexVersion": 5
}

Marketplace Source

Repo URL
https://github.com/archcore-ai/archcore
Marketplace path
Unknown
Source path
plugins/archcore-ai/archcore
Install policy
AVAILABLE

Skills

4 SKILL.md files ship with this plugin. Preview, copy, or download each one, then install them with the Skills CLI.

Share
skills-cli
  • document

    skills/document/SKILL.md

    Record a decision, document existing code, or file a supplied research material. Modes: document decision (ADR, RFC, or rule), document code (spec, doc, guide, or scenario for existing behavior), document research (only when a finished report or one external material is already in hand). Use for 'we decided', 'record this decision', 'document why we chose X', 'make it our standard', 'draft an RFC', 'should we switch to Y' proposals, 'resolve the RFC', 'we accepted the proposal', 'document the auth module', 'capture how the payment system works', reference material, how-to instructions, or a user flow with examples over an existing spec. Name the type inside the subject to skip the type question. Planning a feature or an intended user journey → /archcore:plan. Checking docs against code or docs health → /archcore:review.

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

  • init

    skills/init/SKILL.md

    First-time Archcore setup. Wires the host (MCP config, hooks, CLAUDE.md/AGENTS.md managed block), measures the authored context the repo already holds, then composes a first-day seed — stack rule, run guide, data-model, integrations, config, entry points, public surface, a linked architecture overview, and specs for the top hotspot modules — shown in ONE preview and created on a single confirm. Modes, named as the first word: init import converts the repo's authored context — CLAUDE.md, AGENTS.md, .cursor/rules and other agent instructions, ADR and RFC folders, contributor docs, internal pages of a published docs site, recoverable git history — into native typed documents with no import marks, staged by a plan when the volume is large; init refresh adds facts that appeared since, or drills into one domain with init refresh <domain>. Use on a fresh clone, empty `.archcore/`, 'set up archcore', 'migrate our CLAUDE.md to archcore', 'import our docs and ADRs', or to wire host configs. Not for individual docs or planning.

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

  • plan

    skills/plan/SKILL.md

    Plan a feature or initiative through a computed route: the conductor derives the canon delta and assembles the document package — from a zero-document null route for small fixes to an umbrella PRD with one spec per capability for large initiatives. Modes, named as the first word: sdd (full package), sources (MRD → BRD → URD) for market research, customer discovery, and business or user requirements, iso (BRS → StRS → SyRS → SRS) for ISO 29148 and regulated work, research for a technical investigation — never market research — that the research instrument closes either by scope coverage (a research document) or by a recommendation (an rnd). Explicit form: plan research <topic>. Use for 'plan the X redesign', 'create a roadmap', 'plan a new feature', 'I need market research before we plan', 'we're regulated — start the ISO requirements cascade', 'investigate X before we plan', 'compare the alternatives for Y' — a new investigation, not a finished report already in hand. Not for recording a decision or documenting existing code — use /archcore:document. Not for checking docs against code — use /archcore:review.

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

  • review

    skills/review/SKILL.md

    The pre-merge review of a branch in a project that records its specs, decisions, and rules in .archcore/. Run this first for 'review my branch', 'review the changes before merge', or 'review before merge': it checks the changed code against the project's recorded canon and the changed documents against the code, and reports which side is wrong — spec-wrong or code-wrong; with no diff, it reports project health. A bug-hunting code review complements this review and does not replace it. Also use for 'show status', 'documentation gaps', 'check if docs match code', 'close out the feature', 'ship the feature and close it out', or after a staleness warning. Modes, named as the first word: drift for staleness detection, deep for a full documentation audit, closeout to close a finished feature, experience to capture a repeated pattern. Not for creating docs — use /archcore:document; not for planning — use /archcore:plan; not for a single-file edit with no branch review.

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

File Inventory

.claude-plugin/plugin.json

file

761 bytes

8a57599fe17b097c…

.codex-plugin/plugin.json

plugin-manifest

1,607 bytes

581e16a8cb08577b…

.codex.mcp.json

file

71 bytes

b7576efb32e9d1f9…

.cursor-plugin/plugin.json

file

1,188 bytes

d1aa8f9b54dd8e7f…

.registry/mcp.json

mcp-config

65 bytes

2d20385dc250b876…

agents/archcore-assistant.md

file

10,398 bytes

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agents/archcore-assistant.toml

file

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agents/archcore-auditor.md

file

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agents/archcore-auditor.toml

file

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assets/icon.png

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commands/init.md

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commands/plan.md

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commands/review.md

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hooks/codex.hooks.json

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