tailtest icon

tailtest

avansaber-inc/tailtest · v4.9.1 · Development & Workflow

Hook-powered test generation -- detects files changed during an agent turn and instructs Codex to write and run tests automatically. Zero config, 8 languages.

Is tailtest 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
  • Runs hooks on agent events

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
  • 2 medium findings from the scan. See the evidence
  • The publisher has not verified ownership on HOL.

What is tailtest?

tailtest is a published development & workflow plugin for AI coding agents in the codex ecosystem, developed by AvanSaber Inc. and distributed through the HOL AI plugin registry. Hook-powered test generation -- detects files changed during an agent turn and instructs Codex to write and run tests automatically. Zero config, 8 languages.

Canonical slug
avansaber-inc/tailtest
Version
v4.9.1 · updated Sep 20, 2026

Trust & Reputation

HOL Trust Score
67

Factor Analysis

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

Installability
76pts
Maintenance
55pts
MCP Posture
100pts
Plugin Security
71pts
Provenance
70pts
Publisher Quality
75pts

Registry Snapshot

Project link
tailtest
Publisher verification
No
Marketplace source
Unknown
Scanner
Broker fallback
Security result
Needs review
Digest verified
Yes
1 bundled skill — copy or download SKILL.mdOpen skills

Trust & reputation

Trust & Reputation

HOL Trust Score
67

Factor Analysis

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

Installability
76pts
Maintenance
55pts
MCP Posture
100pts
Plugin Security
71pts
Provenance
70pts
Publisher Quality
75pts

Provenance

Plugin root
.
Source repo
https://github.com/avansaber/tailtest-codex
Source commit
61132f9e6c4f…
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.

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.

Needs review
Security result
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.

lowoperational-securitysupply-chain.lockfile-missing

Repository snapshot does not include a lockfile.

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

tailtest — Frequently asked questions

What is tailtest?
tailtest is an AI plugin in the HOL registry. Hook-powered test generation -- detects files changed during an agent turn and instructs Codex to write and run tests automatically. Zero config, 8 languages.
How do I install tailtest?
Install tailtest in your harness: Codex — codex plugin marketplace add avansaber/tailtest-codex; Any agent — npx [email protected] add avansaber/tailtest-codex. Full step-by-step guidance is on the HOL plugin page.
How do I install tailtest in Codex?
To install tailtest in Codex, start with codex plugin marketplace add avansaber/tailtest-codex. The complete step-by-step install guide for Codex is on the HOL plugin page.
Is tailtest free?
Pricing for tailtest is published on its HOL plugin page when the maker schedules a launch.
How is the Trust Score for tailtest computed?
tailtest has a HOL Trust Score of 67 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/avansaber-inc%2Ftailtest/trust
Who publishes tailtest?
tailtest is published by AvanSaber Inc. and listed on HOL.
Is tailtest available now?
tailtest 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. 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 marketplace registered by the previous command, and install tailtest.

  3. 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": "tailtest",
  "version": "4.9.1",
  "description": "Automatically generates and runs tests alongside your Codex session. Any language. No commands. No setup.",
  "author": {
    "name": "AvanSaber Inc.",
    "email": "[email protected]",
    "url": "https://avansaber.com"
  },
  "homepage": "https://tailtest.com",
  "repository": "https://github.com/avansaber/tailtest-codex",
  "license": "MIT",
  "keywords": [
    "testing",
    "auto-test",
    "codex",
    "openai",
    "assistant",
    "framework-agnostic"
  ],
  "hooks": "./hooks/hooks.json",
  "skills": "./",
  "interface": {
    "displayName": "Tailtest",
    "developerName": "AvanSaber Inc.",
    "composerIcon": "./assets/icon.svg",
    "shortDescription": "Auto-generates and runs tests on every Codex turn",
    "longDescription": "Tailtest watches every file Codex edits in your session and queues it for test generation at end of turn. It writes production-shaped scenarios using the R1-R15 rule layer, runs them, and surfaces only failures. Works with Python, JavaScript/TypeScript, Java, Kotlin, C#, Go, Rust, and Ruby out of the box. Supports an adversarial test mode that biases scenarios toward breakage paths (8 categories: boundary inputs, format/injection, type confusion, concurrent state, time/locale edges, partial failures, resource exhaustion, off-by-one logic). No prompting, no commands; runs automatically as Codex works.",
    "category": "Coding",
    "capabilities": [
      "Interactive",
      "Write"
    ],
    "websiteURL": "https://tailtest.com",
    "defaultPrompt": [
      "Write tests for the file I just edited",
      "Run an adversarial scan on my last change",
      "Show tailtest summary for this session"
    ],
    "brandColor": "#F59E0B",
    "screenshots": []
  },
  "registryIndexVersion": 5
}

Marketplace Source

Repo URL
https://github.com/avansaber/tailtest-codex
Marketplace path
Unknown
Source path
plugins/avansaber/tailtest-codex
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
  • tailtest

    skills/tailtest/SKILL.md

    Generate test scenarios, write the test file, and run it for a specific source file using the tailtest R1-R15 rule layer. When the agent needs to (1) cover a file the Stop hook skipped, (2) regenerate tests after refactoring, (3) test a legacy file Codex did not modify this session, or (4) explicitly run tailtest on a named file.

    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

1,603 bytes

58ebe23df79f07ac…

AGENTS.md

file

31,645 bytes

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assets/icon.svg

asset

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hooks/__init__.py

file

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hooks/hooks.json

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hooks/lib/__init__.py

file

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hooks/lib/api_validator.py

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hooks/lib/complexity_scorer.py

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hooks/lib/context.py

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hooks/lib/filter.py

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hooks/lib/history_manager.py

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hooks/lib/impact_tracer.py

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hooks/lib/last_failures_formatter.py

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hooks/lib/output_compressor.py

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hooks/lib/ramp_up.py

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hooks/lib/runners.py

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hooks/lib/scanner.py

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hooks/lib/scenario_log.py

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hooks/lib/session.py

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hooks/lib/style.py

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hooks/post_tool_use.py

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hooks/session_start.py

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hooks/stop.py

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README.md

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SECURITY.md

file

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skills/tailtest/hunt.md

skill

2,847 bytes

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skills/tailtest/SKILL.md

skill

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skills/tailtest/summary.md

skill

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skills/tailtest/tailtest-off.md

skill

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skills/tailtest/tailtest-on.md

skill

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History, reviews, and alternatives

Launch history

No public launch record yet.

User reviews

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