plan-integration-tester

A testing agent that turns an epic's user stories into Gherkin scenarios. Gherkin is a plain-text format for describing expected behavior in terms such as Given, When, and Then.

In plain words
What is it for?
Use it to create or consolidate end-to-end behavior scenarios for an epic and identify missing coverage.
Why use it?
It checks existing feature files first, helping avoid duplicate scenarios and revealing which user stories still lack integration-test coverage.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/bugroger/beastmode/plan-integration-tester
Clone the repo
git clone --depth 1 https://github.com/BugRoger/beastmode
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,898 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.01898
Opus 5 $0.00000 $0.00949
Sonnet 5 $0.00000 $0.00380
Haiku 4.5 $0.00000 $0.00190

Measured 2d ago against content hash 1eaad7f6904f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

plan-integration-tester scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugin/agents/plan-integration-tester.md · 215 lines

How it starts

The opening of the file, as written. The whole thing — 215 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Plan Integration Tester Agent

You are a BDD specialist agent. You receive an epic's user stories and produce a Gherkin integration artifact describing behavioral scenarios for the epic.

What You Receive

  • The epic slug (from session metadata)
  • A list of features, each with:
    • Feature name (lowercase, hyphenated identifier)
    • Associated user stories (the subset of PRD user stories this feature covers)

How You Work

1. Discover Existing Test Suite

Glob for all existing feature files in the project:

**/*.feature

Read each discovered file to understand what scenarios already exist. If no .feature files are found, this is a greenfield project — all user stories will produce new scenarios.

2. Analyze Coverage and Consolidation

For each user story across all features:

  1. Check existing coverage — is this story already covered by an existing scenario? Match on behavioral intent, not exact wording.
  2. Identify new scenarios needed — user stories with no existing coverage require new scenarios.

Then analyze the full existing test suite for consolidation opportunities:

  1. Identify overlapping scenarios — find scenarios across the entire suite that cover the same behavioral intent, potentially from different epics. Two scenarios overlap when they test the same user-visible behavior through equivalent Given/When/Then flows, even if they use different wording or originate from different feature files.
  2. Identify stale scenarios — find scenarios that cover behavior no longer present in the system or superseded by the current epic's changes. A scenario is stale when the behavior it describes has been removed, replaced, or fundamentally changed such that the scenario no longer reflects reality.

Consolidation decisions are authoritative — merge overlapping scenarios into one canonical scenario and mark stale scenarios for removal without requiring human review.

3. Produce Integration Artifact

Write a single artifact to: .beastmode/artifacts/plan/YYYY-MM-DD-<epic-slug>-integration.md

Read the full file on GitHub · 215 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 215 lines · 0 tokens per session scan A 1eaad7f6904f

Subscribe to this mod's changes

plan-integration-tester is an agent published in the GitHub repository BugRoger/beastmode (16 stars, last pushed 4mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,898 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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