How do I install PMC?

Install PMC in your harness: Codex — codex plugin marketplace add DuncanMain/project-memory-core; Any agent — npx skills@1.7.4 add DuncanMain/project-memory-core. Full step-by-step guidance is on the HOL plugin page.

How do I install PMC in Codex?

To install PMC in Codex, start with codex plugin marketplace add DuncanMain/project-memory-core. The complete step-by-step install guide for Codex is on the HOL plugin page.

Pricing for PMC is published on its HOL plugin page when the maker schedules a launch.

How is the Trust Score for PMC computed?

PMC has a HOL Trust Score of 87 out of 100. The score is a weighted sum of six components from a static scan of the source, capped for high-severity findings and adjusted by two disclosed policies. Memberships and payments are not inputs, and a scan is not a safety guarantee. Full breakdown: https://hol.org/registry/plugins/duncan-main%2Fproject-memory-core/trust

PMC is published by Duncan Main and listed on HOL.

Is PMC available now?

PMC availability is listed on its HOL plugin page.

PMC

duncan-main/project-memory-core · v1.1.0 · Development & Workflow

by Duncan Mainsafe

Give Codex lasting project context in an Obsidian vault you control.

Install Source Claim this pluginFollow0

Trust Score87 SecurityPartial Surfaces1

Is PMC a fit?

From the plugin's manifest and HOL's scan. Anything the plugin does not declare is shown as not declared.

Works with

Codex

1 skill

Before you install

Sign-in: Asks you to sign in when you install it
Declared access: Interactive, Write
License: MIT

Check before relying on it

Security checks that did not finish: cisco-skill-scanner, codex-plugin-scanner. See the evidence
The publisher has not verified ownership on HOL.

What is PMC?

PMC is a published development & workflow plugin for AI coding agents in the codex ecosystem, developed by Duncan Main and distributed through the HOL AI plugin registry. Give Codex lasting project context in an Obsidian vault you control.

Canonical slug: duncan-main/project-memory-core
Version: v1.1.0 · updated Sep 20, 2026
Open data: entity.json (JSON-LD)

Trust & Reputation

HOL Trust Score

Factor Analysis

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

Installability

100pts

Maintenance

55pts

MCP Posture

100pts

Plugin Security

95pts

Provenance

70pts

Publisher Quality

75pts

Registry Snapshot

Project link: PMC
Repository: https://github.com/DuncanMain/project-memory-core
Homepage: https://duncanmain.github.io/project-memory-core/
Canonical profile: https://hol.org/registry/plugins/duncan-main%2Fproject-memory-core
Publisher verification: No
Marketplace source: Unknown
Scanner: Broker fallback
Security result: Partial scan
Digest verified: Yes

1 bundled skill — copy or download SKILL.mdOpen skills

Trust & reputation

Trust & Reputation

HOL Trust Score

Factor Analysis

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

Installability

100pts

Maintenance

55pts

MCP Posture

100pts

Plugin Security

95pts

Provenance

70pts

Publisher Quality

75pts

Provenance

Plugin root: .
Source repo: https://github.com/DuncanMain/project-memory-core
Source commit: ea2c5ab21334…
Publisher verified: No
Owner verified: Not owner verified

Continuous scanner CI detected

No action is required. This plugin receives the full trust score.

README badge not detected

Plugin owners can add the HOL badge to the repository README from Guard Plugins. Distribution, not security evidence. It adds a 2% engagement adjustment to the overall trust score and never changes the security result.

Security Posture

See how the Trust Score is computed

Partial scan

Security result

Score from finished checks

High findings

Some checks did not finish (cisco-skill-scanner, codex-plugin-scanner). No blocking issue was found in the checks that did finish, but this is not a passed scan.

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

PMC — Frequently asked questions

What is PMC?: PMC is an AI plugin in the HOL registry. Give Codex lasting project context in an Obsidian vault you control.
How do I install PMC?: Install PMC in your harness: Codex — codex plugin marketplace add DuncanMain/project-memory-core; Any agent — npx [email protected] add DuncanMain/project-memory-core. Full step-by-step guidance is on the HOL plugin page.
How do I install PMC in Codex?: To install PMC in Codex, start with codex plugin marketplace add DuncanMain/project-memory-core. The complete step-by-step install guide for Codex is on the HOL plugin page.
Is PMC free?: Pricing for PMC is published on its HOL plugin page when the maker schedules a launch.
How is the Trust Score for PMC computed?: PMC has a HOL Trust Score of 87 out of 100. The score is a weighted sum of six components from a static scan of the source, capped for high-severity findings and adjusted by two disclosed policies. Memberships and payments are not inputs, and a scan is not a safety guarantee. Full breakdown: https://hol.org/registry/plugins/duncan-main%2Fproject-memory-core/trust
Who publishes PMC?: PMC is published by Duncan Main and listed on HOL.
Is PMC available now?: PMC availability is listed on its HOL plugin page.

Install Guidance

Install in Codex

Install through the Codex CLI plugin marketplace.

Codex plugin docs

Optional: install HOL Guard for Codex first, so it can check this plugin's tools on your machine before Codex uses them.

1
Register the marketplace
Run in any terminal. Codex reads the marketplace entry from .agents/plugins/marketplace.json (or the legacy .claude-plugin path) in the repository. If the repository ships none, add the generated entry from the Advanced section below first.
shell
2
Install from the Plugins browser
Open Codex, open the Plugins browser, choose the marketplace registered by the previous command, and install project-memory-core.
3
Check the marketplace is registered
This confirms the marketplace source only. Confirm the plugin itself is enabled in the Plugins browser before relying on it.
shell

Did setup work in Codex?

No setup reports for Codex yet. Self-reported by signed-in visitors. Copying a command is not counted, and most installs are never reported.

Attested installs: Fewer than 10 attested installs of this plugin in week 2026-W43, so no number is shown. Counted from opt-in HOL Guard install reports, once per machine and runtime, and never mixed with the answers above. How install reports work.

Loading reviews

Plugin Manifest

{
  "name": "project-memory-core",
  "version": "1.1.0",
  "description": "Give Codex lasting project context in an Obsidian vault you control.",
  "author": {
    "name": "Duncan Main",
    "url": "https://github.com/DuncanMain"
  },
  "license": "MIT",
  "homepage": "https://duncanmain.github.io/project-memory-core/",
  "repository": "https://github.com/DuncanMain/project-memory-core",
  "keywords": [
    "project-memory",
    "obsidian",
    "knowledge-management",
    "documentation"
  ],
  "skills": "./",
  "interface": {
    "displayName": "PMC",
    "developerName": "Duncan Main",
    "shortDescription": "Give Codex lasting context",
    "longDescription": "Stop explaining the same project to Codex in every task. PMC creates a clear home for your project in Obsidian, captures approved decisions and discoveries, prepares handoffs, recalls relevant context, and checks whether your notes have gone stale. Setup is conversational, every durable write stays under your control, and your knowledge remains private local Markdown—with no account, telemetry, raw transcript capture, or developer server.",
    "category": "Productivity",
    "capabilities": [
      "Interactive",
      "Write"
    ],
    "brandColor": "#5966D9",
    "websiteURL": "https://duncanmain.github.io/project-memory-core/",
    "privacyPolicyURL": "https://duncanmain.github.io/project-memory-core/privacy.html",
    "termsOfServiceURL": "https://duncanmain.github.io/project-memory-core/terms.html",
    "composerIcon": "./assets/icon.svg",
    "logo": "./assets/logo.svg",
    "defaultPrompt": [
      "Set up lasting memory for this project in my Obsidian vault.",
      "Remember the decisions from this task.",
      "Check whether this project's Obsidian notes are out of date."
    ]
  },
  "registryIndexVersion": 5
}

Marketplace Source

Repo URL: https://github.com/DuncanMain/project-memory-core
Marketplace path: Unknown
Source path: plugins/DuncanMain/project-memory-core
Install policy: AVAILABLE

Skills

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

skills-cli

curate-project-memory
skills/curate-project-memory/SKILL.md
Give Codex lasting project context in a local Obsidian-compatible Markdown vault. Use when a user asks PMC to set up or connect the project's Obsidian vault, scan or explain a codebase, create a Project Home, remember a decision, constraint, discovery, procedure, debugging lesson, or current state, recall what Codex already knows, prepare a handoff, check whether notes are stale or contradictory, relate code to knowledge, keep something session-only, export or share reviewed context, or resume work from existing project notes.
Raw SKILL.md
SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

File Inventory

.codex-plugin/plugin.json

plugin-manifest

1,608 bytes

3db6d85e86be70a6…

assets/icon.svg

asset

482 bytes

b63a6ce3fe163df3…

assets/logo.svg

asset

482 bytes

b63a6ce3fe163df3…

README.md

file

3,331 bytes

9acc454beb6345d0…

SECURITY.md

file

884 bytes

07f4f0d29e8a1431…

skills/curate-project-memory/agents/openai.yaml

skill

296 bytes

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skills/curate-project-memory/assets/agents-project-memory.md

skill

717 bytes

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skills/curate-project-memory/assets/constraint.md

skill

307 bytes

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skills/curate-project-memory/assets/coverage.md

skill

474 bytes

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skills/curate-project-memory/assets/current-state.md

skill

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skill

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skills/curate-project-memory/assets/decision.md

skill

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skills/curate-project-memory/assets/discovery.md

skill

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skills/curate-project-memory/assets/handoff.md

skill

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skills/curate-project-memory/assets/procedure.md

skill

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skills/curate-project-memory/assets/project-home.md

skill

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skills/curate-project-memory/assets/project-note.md

skill

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skills/curate-project-memory/assets/project-profiles.json

skill

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skills/curate-project-memory/assets/promotion-inbox.md

skill

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skills/curate-project-memory/assets/session-summary.md

skill

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skill

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skills/curate-project-memory/references/automatic-orientation.md

skill

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skills/curate-project-memory/scripts/check_vault_health.py

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skills/curate-project-memory/scripts/generate_health_report.py

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History, reviews, and alternatives

Launch history

No public launch record yet.

User reviews

—from 0 reviews

The first substantive review can be added on this page.

Milestones and alternatives

Related alternatives

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Suggested from HOL scan evidence: same category, at least one shared runtime, similar tags and contents. Paid placement and Trust Score play no part.

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Points

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Is PMC a fit?

Works with

Before you install

Check before relying on it

What is PMC?

Trust & Reputation

Factor Analysis

Registry Snapshot

Trust & reputation

Trust & Reputation

Factor Analysis

Provenance

Security Posture

Findings

PMC — Frequently asked questions

Install Guidance

Install in Codex

Did setup work in Codex?

Plugin Manifest

Marketplace Source

Skills

File Inventory

Related plugins

Alternatives in Development & Workflow

History, reviews, and alternatives

Launch history

User reviews

Milestones and alternatives