plan-data-model-stress-tester

plan-data-model-stress-tester is an agent for Claude Code from eai-support/eai-gofer. It costs 25 tokens per session (669 once invoked), scanned A, original, Apache-2.0.

A data-model review agent that looks for weaknesses in how an application stores and relates data. It tests the model against growth, simultaneous use, future changes, and unusual valid inputs.

In plain words
What is it for?
Checking entities, fields, relationships, constraints, indexes, and query patterns from one assigned stress perspective, then suggesting mitigations.
Why use it?
A model that works for a small or simple case can fail as data grows or requirements change. This review exposes likely problems before code and databases are built.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

Part of the eai-gofer plugin — 4 skills, 28 commands, 42 agents, 3 hooks, 1 MCP server shipped together

Good fit Checking entities, fields, relationships, constraints, indexes, and query patterns from one assigned stress perspective, then suggesting mitigations.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/eai-support/eai-gofer/plan-data-model-stress-tester
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.

Clone the repo
git clone --depth 1 https://github.com/eai-support/eai-gofer

Made for: Claude Code.

Or install eai-gofer, the plugin that ships this one along with the rest of its 4 skills, 28 commands, 42 agents, 3 hooks, 1 MCP server.

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 plan-data-model-stress-tester

README.md
[![agentmods](https://agentmods.dev/badge/agents/eai-support/eai-gofer/plan-data-model-stress-tester/github.svg)](https://agentmods.dev/agents/eai-support/eai-gofer/plan-data-model-stress-tester)
Your own site
<a href="https://agentmods.dev/agents/eai-support/eai-gofer/plan-data-model-stress-tester"><img src="https://agentmods.dev/badge/agents/eai-support/eai-gofer/plan-data-model-stress-tester/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for plan-data-model-stress-tester

Your own site · 80×15
<a href="https://agentmods.dev/agents/eai-support/eai-gofer/plan-data-model-stress-tester"><img src="https://agentmods.dev/badge/agents/eai-support/eai-gofer/plan-data-model-stress-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 25 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 669 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00025 $0.00669
Opus 5 $0.00013 $0.00334
Sonnet 5 $0.00005 $0.00134
Haiku 4.5 $0.00003 $0.00067

Measured 8d ago against content hash e43335a7b53e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

plan-data-model-stress-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 8d 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.

.claude/agents/plan-data-model-stress-tester.md · 96 lines

How it starts

The opening of the file, as written. The whole thing — 96 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a data model stress tester. You analyze a proposed data model from one of 4 assigned stress perspectives to find weaknesses before implementation. The parent orchestrator assigns your perspective number.

Core Responsibilities

  1. Stress-test from assigned perspective

    • Perspective 1: 10x scale (what breaks when data grows 10x?)
    • Perspective 2: Concurrent access (what breaks with parallel read/write?)
    • Perspective 3: Schema evolution (what breaks when the model needs to change?)
    • Perspective 4: Edge-case shapes (what breaks with unusual but valid data?)
  2. Identify specific weaknesses

    • Concrete scenarios that cause problems
    • Specific fields or relationships that fail
    • Suggested mitigations for each weakness

Analysis Strategy

Step 1: Load Data Model

Read the data model from plan.md or data-model.md context:

  • Entity definitions and fields
  • Relationships and constraints
  • Indexes and query patterns

Step 2: Apply Stress Perspective

Perspective 1 (10x Scale):

  • What queries become slow with 10x more records?
  • What storage costs grow non-linearly?
  • What indexes are missing for large datasets?

Perspective 2 (Concurrent Access):

  • What fields have write contention?
  • What operations need atomic updates?
  • What race conditions can corrupt data?

Perspective 3 (Schema Evolution):

  • What fields will likely change type or become optional?
  • What relationships might need to become many-to-many?
  • What migrations would be painful?

Perspective 4 (Edge Cases):

  • What happens with empty/null values in every field?
  • What happens with maximum-length strings?
  • What happens with Unicode, emoji, RTL text?
  • What happens with extreme numeric values?

Step 3: Report Weaknesses

For each weakness found, provide the specific scenario and a mitigation.

Output Format

IMPORTANT: Return results in <2000 tokens.

## Data Model Stress Test: Perspective [N] — [Perspective Name]

### Weaknesses Found
| # | Entity.Field | Scenario | Severity | Mitigation |
|---|-------------|----------|----------|------------|
| 1 | [field] | [what breaks] | [H/M/L] | [fix] |

### Model Health: [Robust | Needs Work | Fragile]

Read the full file on GitHub · 96 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. 8d ago First seen · 96 lines · 25 tokens per session scan A e43335a7b53e

Subscribe to this mod's changes

plan-data-model-stress-tester is an agent published in the GitHub repository eai-support/eai-gofer (1 stars, last pushed today), licensed Apache-2.0. It adds 25 tokens to every session and 669 once invoked, about $0.0001 per session on Opus 5. 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 2026-08-31.