Tandem Workflow Architect icon

Tandem Workflow Architect

Plan Tandem workflows in Codex, then validate, preview, and run them through the governed Tandem engine.

frumu-ai/tandem-codex-plugin · v0.1.5 · Development & Workflow

frumu-aireview

Trust Score

75

Security

71

Surfaces

2

What is Tandem Workflow Architect?

Tandem Workflow Architect is a published development & workflow plugin for AI coding agents in the codex ecosystem, developed by frumu-ai and distributed through the HOL AI plugin registry. Plan Tandem workflows in Codex, then validate, preview, and run them through the governed Tandem engine.

Canonical slug
frumu-ai/tandem-codex-plugin
Version
v0.1.5 · updated Sep 20, 2026

Trust & Reputation

HOL Trust Score
75

Factor Analysis

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

Installability
76pts
Maintenance
75pts
MCP Posture
95pts
Plugin Security
71pts
Provenance
70pts
Publisher Quality
75pts

Registry Snapshot

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

Trust & reputation

Trust & Reputation

HOL Trust Score
75

Factor Analysis

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

Installability
76pts
Maintenance
75pts
MCP Posture
95pts
Plugin Security
71pts
Provenance
70pts
Publisher Quality
75pts

Provenance

Plugin root
.
Source repo
https://github.com/frumu-ai/tandem-codex-plugin
Source commit
e472d7388333…
Publisher verified
No
Owner verified
Not owner verified

Continuous scanner CI detected

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

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

review
Safety label
71
Security score
0
High findings
Provider
registry-broker-fallback
Grade
C · review
Version
Unknown
cisco-skill-scanner: unknown

Findings

mediumpublishabilitypublishability.link.missing.privacyPolicyURL

privacyPolicyURL should be present for marketplace readiness.

mediumpublishabilitypublishability.link.missing.termsOfServiceURL

termsOfServiceURL should be present for marketplace readiness.

lowmcp-securitymcp.remote.auth.unknown

MCP server tandemDocs does not declare an auth posture.

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

Tandem Workflow Architect — Frequently asked questions

What is Tandem Workflow Architect?
Tandem Workflow Architect is an AI plugin in the HOL registry. Plan Tandem workflows in Codex, then validate, preview, and run them through the governed Tandem engine.
How do I install Tandem Workflow Architect?
Install Tandem Workflow Architect in your harness: Codex — codex plugin marketplace add frumu-ai/tandem-codex-plugin; Any agent — npx skills add frumu-ai/tandem-codex-plugin. Full step-by-step guidance is on the HOL plugin page.
How do I install Tandem Workflow Architect in Codex?
To install Tandem Workflow Architect in Codex, start with codex plugin marketplace add frumu-ai/tandem-codex-plugin. The complete step-by-step install guide for Codex is on the HOL plugin page.
Is Tandem Workflow Architect free?
Pricing for Tandem Workflow Architect is published on its HOL plugin page when the maker schedules a launch.
Who publishes Tandem Workflow Architect?
Tandem Workflow Architect is published by frumu-ai and listed on HOL.
Is Tandem Workflow Architect available now?
Tandem Workflow Architect availability is listed on its HOL plugin page.

Install Guidance

Install in Codex

Install through the Codex CLI plugin marketplace.

Codex plugin docs
  1. 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. 2

    Install from the Plugins browser

    Open Codex, open the Plugins browser, choose the tandem-codex-plugin marketplace, and install tandem-codex-plugin.

  3. 3

    Verify the marketplace registration

    shell

Plugin Manifest

{
  "name": "tandem-codex-plugin",
  "version": "0.1.5",
  "description": "Tandem Workflow Architect for Codex. Plan-mode design partner that helps you shape Tandem workflows (V2 automations and workflow plans) and hands them to the Tandem engine for validation, preview, and run. Plan with Codex. Govern with Tandem. Run with receipts.",
  "keywords": [
    "tandem",
    "workflow",
    "automation",
    "mcp",
    "architect",
    "plan-mode"
  ],
  "homepage": "https://github.com/frumu-ai/tandem-codex-plugin",
  "repository": "https://github.com/frumu-ai/tandem-codex-plugin",
  "license": "MIT",
  "author": {
    "name": "frumu-ai",
    "url": "https://github.com/frumu-ai"
  },
  "skills": "./",
  "mcpServers": "./.registry/mcp.json",
  "commands": "./commands/",
  "interface": {
    "displayName": "Tandem Workflow Architect",
    "developerName": "frumu-ai",
    "shortDescription": "Plan Tandem workflows in Codex; govern and run them in Tandem.",
    "longDescription": "A Codex plugin for designing Tandem workflows with plan-mode guidance, bundled Tandem docs, validation, previews, and governed execution through the Tandem engine.",
    "category": "Productivity",
    "capabilities": [
      "Interactive",
      "Read",
      "Write"
    ],
    "websiteURL": "https://github.com/frumu-ai/tandem-codex-plugin",
    "brandColor": "#2563EB",
    "defaultPrompt": [
      "Create a Tandem workflow from an intent",
      "Build a complex Tandem workflow DAG",
      "Preview or validate a Tandem workflow"
    ],
    "composerIcon": "./assets/icon.png",
    "logo": "./assets/icon.png"
  },
  "registryIndexVersion": 5
}

Marketplace Source

Repo URL
https://github.com/frumu-ai/tandem-codex-plugin
Marketplace path
Unknown
Source path
plugins/frumu-ai/tandem-codex-plugin
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.

Share
skills-cli
  • tandem-workflow-plan-mode

    skills/tandem-workflow-plan-mode/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

1,416 bytes

0a817227f8ecb9ea…

.mcp.json

file

89 bytes

8097b94964a59936…

.registry/mcp.json

mcp-config

61 bytes

64b31bc807ad90c2…

assets/icon.png

asset

15,316 bytes

8b2644feaf5ef591…

commands/apply-workflow.md

file

2,463 bytes

8c7b6c96d95e2b8d…

commands/build-complex-workflow.md

file

5,669 bytes

d036dbb769477dfd…

commands/create-workflow.md

file

2,199 bytes

831d3c37513280a5…

commands/import-preview-workflow.md

file

2,210 bytes

2b6b8dea07ef91a5…

commands/preview-workflow.md

file

1,925 bytes

68a2863504baf8b0…

commands/revise-workflow.md

file

1,629 bytes

e8dde7649f75f4fa…

commands/run-workflow.md

file

2,042 bytes

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commands/tandem-doctor.md

file

4,894 bytes

ea0c99e743681d9f…

commands/tandem-setup.md

file

5,733 bytes

2535a0b8a9b9a8e0…

commands/validate-workflow.md

file

2,145 bytes

1f5e36ba412d538c…

package-lock.json

file

18,976 bytes

e24e24523af3040c…

package.json

file

1,044 bytes

8dfd971d96839a05…

README.md

file

18,728 bytes

cd6246fb4d96f334…

skills/tandem-workflow-plan-mode/SKILL.md

skill

19,863 bytes

81c4212d02daeb28…

tsconfig.json

file

422 bytes

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