e2e-flow-verifier

e2e-flow-verifier is an agent for coding agents from iamcxa/kc-claude-plugins. It costs 41 tokens per session (8,046 once invoked), scanned A, original, MIT.

An adaptive end-to-end browser-test agent that runs a predefined user flow and records evidence. It can repair selectors, add missing flow steps, strengthen weak checks, and produce screenshots, a trace, and reports.

In plain words
What is it for?
Use it to validate web-app flows from flow and mapping files, fix broken interactions or assertions, and create evidence suitable for a pull request.
Why use it?
Browser tests can break when page selectors, URLs, or expected checks change. This agent diagnoses those gaps, applies specified corrections, and reruns the flow for a clean result.

Agent

Installs and runs on its own, but its text points at files inside its plugin — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed. Installing the plugin gets both.

Part of the e2e-pipeline plugin — 11 skills, 8 agents, 2 hooks shipped together

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/iamcxa/kc-claude-plugins/e2e-flow-verifier
Clone the repo
git clone --depth 1 https://github.com/iamcxa/kc-claude-plugins

Or install e2e-pipeline, the plugin that ships this one along with the rest of its 11 skills, 8 agents, 2 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for e2e-flow-verifier

README.md
[![agentmods](https://agentmods.dev/badge/agents/iamcxa/kc-claude-plugins/e2e-flow-verifier.svg)](https://agentmods.dev/agents/iamcxa/kc-claude-plugins/e2e-flow-verifier)
Your own site
<a href="https://agentmods.dev/agents/iamcxa/kc-claude-plugins/e2e-flow-verifier"><img src="https://agentmods.dev/badge/agents/iamcxa/kc-claude-plugins/e2e-flow-verifier.svg" alt="Measured on agentmods" height="20"></a>
Per session 41 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 8,046 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 5.1 $0.00041 $0.08046
Opus 5 $0.00020 $0.04023
Sonnet 5 $0.00008 $0.01609
Haiku 4.5 $0.00004 $0.00805

Measured 5d ago against content hash e346680254fe, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

e2e-flow-verifier scanned grade A with 1 finding 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 5d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s -o /dev/null -w "%{http_code}" <base_url>
e2e-pipeline/agents/e2e-flow-verifier.md · 687 lines

How it starts

The opening of the file, as written. The whole thing — 687 lines — stays where its author put it; the contents beside it link to each section on GitHub.

E2E Flow Verifier Agent

You are an adaptive flow validator. You run E2E test flows in a browser, auto-repair broken selectors and flow gaps, enrich weak assertions, and produce PR-ready evidence from a clean final run. You operate in a subagent context (or as a persistent teammate in Teams mode).

Core Responsibilities

  1. Run a flow against a live web app and diagnose failures
  2. Apply three layers of corrections: REPAIR (selectors), ADAPT (missing steps), ENRICH (weak assertions)
  3. Re-run the corrected flow as a clean evidence run (screenshots + trace)
  4. Produce reports (technical + PR summary) and write back corrections
  5. Return structured results to the orchestrator skill

Input Contract

Field Required Description
flow_path Yes Absolute path to the flow YAML file
mapping_path Yes Absolute path to the mapping YAML file
auth_profile Yes Path to auth profile directory (~/.agent-browser/<app>/)
auth_mode Yes persistent; flow-managed verification is owned by /e2e-test
base_url Yes Dev server URL (e.g., http://localhost:3000)
app Yes App name from mapping (used for session isolation)
report_dir Yes Absolute path for output files
video No Orchestrator dispatches media-processor for screenshot-based MP4 after this agent completes (default: true). This agent captures step screenshots in both rounds.
browser_runtime Yes Absolute path to e2e-browser-runtime.js.
browser_run_id Yes Fresh run identity supplied by the orchestrator.
browser_receipt Yes Absolute browser ownership receipt path.
diagnostic_init_scripts Optional Ordered absolute recorder paths; defaults to an empty list.
service_runtime Conditional Absolute shared supervisor path when services are orchestrator-owned.
service_run_id Conditional Service ownership identity.
service_state_dir Conditional Absolute service state/receipt directory.

Read the full file on GitHub · 687 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. 5d ago First seen · 687 lines · 41 tokens per session scan A e346680254fe

Subscribe to this mod's changes

e2e-flow-verifier is an agent published in the GitHub repository iamcxa/kc-claude-plugins (3 stars, last pushed today), licensed MIT. It adds 41 tokens to every session and 8,046 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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