genpage-entity-builder

genpage-entity-builder is an agent for coding agents from microsoft/power-platform-skills. It costs 73 tokens per session (4,741 once invoked), scanned A, original, MIT.

An agent that creates Dataverse tables, columns, relationships, choices, and optional sample data from an approved plan. Dataverse is Microsoft's cloud data platform used by Power Apps.

In plain words
What is it for?
It is for setting up the entities and sample records that Power Apps pages need, including solution membership.
Why use it?
It removes the repetitive and dependency-sensitive work of provisioning the data model behind a generative page.

Agent

Part of the model-apps plugin — 2 skills, 6 agents shipped together

About the project

microsoft/power-platform-skills is a plugin marketplace containing reusable skills, agents, and commands for developing with Microsoft Power Platform. Developers use it to build and deploy Power Pages sites, model-driven Power Apps, and related solutions through Claude Code or GitHub Copilot. The catalogue entries are the marketplace's included skills, agents, plugins, and other agent components.

microsoft/power-platform-skills · 825 stars · on GitHub

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/microsoft/power-platform-skills/genpage-entity-builder
Clone the repo
git clone --depth 1 https://github.com/microsoft/power-platform-skills

Or install model-apps, the plugin that ships this one along with the rest of its 2 skills, 6 agents.

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 genpage-entity-builder

README.md
[![agentmods](https://agentmods.dev/badge/agents/microsoft/power-platform-skills/genpage-entity-builder.svg)](https://agentmods.dev/agents/microsoft/power-platform-skills/genpage-entity-builder)
Your own site
<a href="https://agentmods.dev/agents/microsoft/power-platform-skills/genpage-entity-builder"><img src="https://agentmods.dev/badge/agents/microsoft/power-platform-skills/genpage-entity-builder.svg" alt="Measured on agentmods" height="20"></a>
Per session 73 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,741 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 $0.00073 $0.04741
Opus 5 $0.00036 $0.02371
Sonnet 5 $0.00015 $0.00948
Haiku 4.5 $0.00007 $0.00474

Measured yesterday against content hash fb90b0367af0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

genpage-entity-builder 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 yesterday.

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.

plugins/model-apps/agents/genpage-entity-builder.md · 557 lines

How it starts

The opening of the file, as written. The whole thing — 557 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Genpage Entity Builder

You are the entity creation agent for generative pages. Your job is to create Dataverse tables, columns, relationships, and choice columns as specified in the plan document, then optionally seed sample data.

You will be invoked by the /genpage skill with a prompt that includes:

  • Path to genpage-plan.md
  • The working directory (where to write logs and intermediate JSON)
  • The plugin root (${PLUGIN_ROOT}) — where the JS scripts live
  • The Dataverse environment URL (e.g. https://contoso.crm.dynamics.com)

The Solution unique name and Publisher Prefix are read directly from the plan document's ## Environment section (the planner always writes them — the default fallback is Solution: Default + Publisher Prefix: new).

The solution membership is passed via the input JSON to provision-entities.js (see Step 4). Default is a valid solution name — it lands new components in the env's built-in Default Solution.

You operate through the SDK-backed provision-entities.js CLI under ${PLUGIN_ROOT}/scripts/. There is no MCP server. There is no Python. There is no Dataverse Skills plugin dependency.


Step 1 — Read the Plan Document

Read genpage-plan.md at the path provided in your invocation prompt.

The plan document follows a strict schema. See ${PLUGIN_ROOT}/references/plan-schema.md for the full contract, especially the ## Entity Creation Required section.

Extract from the ## Environment section:

  • SolutionSolution: <uniqueName>. Always present in a valid plan. Pass to every script as --solution <uniqueName> (yes, even when the value is literally Default).
  • Publisher PrefixPublisher Prefix: <prefix>. Always present. This is the single source of truth for the prefix. Construct every full logical name as ${prefix}_${suffix} (lowercase) when calling scripts.

Extract from the ## Entity Creation Required section. Names in this section are suffixes only — they MUST NOT contain a prefix or underscore:

  • Tables to create (suffix, display name, primary name suffix)
  • Column definitions (suffix, type, required level)
  • Choice column options (with numeric values starting at 100000000)
  • Relationships (1:N lookup or N:N, related table suffix, lookup field suffix, cascade config)

Read the full file on GitHub · 557 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. yesterday First seen · 557 lines · 73 tokens per session scan A fb90b0367af0

Subscribe to this mod's changes

genpage-entity-builder is an agent published in the GitHub repository microsoft/power-platform-skills (825 stars, last pushed today), licensed MIT. It adds 73 tokens to every session and 4,741 once invoked, about $0.0004 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 2026-09-03.

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