essential-view-builder-mcp: Instructions file for Codex

AGENTS.md

essential-view-builder-mcp AGENTS.md is an instructions file for Codex, OpenCode from essentialproject/essential-view-builder-mcp. It costs 351 tokens per session, scanned A, original, no licence file.

A set of project instructions for building views with essential viewer, including required API documentation, common mistakes, and XSLT 2.0 patterns. Essential viewer is the project or library these instructions apply to.

In plain words
What is it for?
It helps developers check the API before coding, follow the documented XSLT patterns, and avoid known implementation mistakes.
Why use it?
It gives an agent the rules and reference points needed to avoid errors when writing code for this specific viewer.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is essentialproject/essential-view-builder-mcp's own configuration. It tells Codex and OpenCode how to work on essential-view-builder-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything essential-view-builder-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to essentialproject/essential-view-builder-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/essentialproject/essential-view-builder-mcp/master/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/essentialproject/essential-view-builder-mcp

Made for: Codex, OpenCode.

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 essential-view-builder-mcp AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/essentialproject/essential-view-builder-mcp/agents-md/github.svg)](https://agentmods.dev/instructions/essentialproject/essential-view-builder-mcp/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/essentialproject/essential-view-builder-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/essentialproject/essential-view-builder-mcp/agents-md/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 essential-view-builder-mcp AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/essentialproject/essential-view-builder-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/essentialproject/essential-view-builder-mcp/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 351 This file is loaded in full into every session.
When invoked 351 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00351 $0.00351
Opus 5.5 $0.00140 $0.00140
Sonnet 5.5 $0.00070 $0.00070
Haiku 4.5 $0.00035 $0.00035

Measured 2mo ago against content hash 24fc6426623f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

essential-view-builder-mcp AGENTS.md 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 2mo 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.

AGENTS.md · 30 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2mo ago First seen · 30 lines · 351 tokens per session scan A 24fc6426623f

Subscribe to this mod's changes

essential-view-builder-mcp AGENTS.md is an instructions file published in the GitHub repository essentialproject/essential-view-builder-mcp (8 stars, last pushed 6mo ago), with no licence file. It adds 351 tokens to every session, about $0.0014 per session on Opus 5.5. 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.

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