domain

Rules for using a repository's established domain vocabulary and architectural decisions. Domain vocabulary is the project-specific language used to describe its concepts and behavior.

In plain words
What is it for?
Use them before exploring or changing a repository so new work follows its defined terminology and exposes conflicts with accepted decisions.
Why use it?
They prevent agents from inventing competing terms or silently contradicting decisions recorded in context files and architecture decision records.

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/celados/mcpx/domain
Clone the repo
git clone --depth 1 https://github.com/celados/mcpx
Per session 11 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 149 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 $0.00011 $0.00149
Opus 5 $0.00005 $0.00075
Sonnet 5 $0.00002 $0.00030
Haiku 4.5 $0.00001 $0.00015

Measured 2d ago against content hash e66ff23bab3c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

domain 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.

docs/agents/domain.md · 29 lines

What it actually says

Domain Documentation

This repository uses a single domain context.

Before Exploring

Read:

  • /CONTEXT.md, when present.
  • Relevant ADRs under /docs/adr/.

Missing files are not errors. /domain-modeling creates them lazily when terminology or durable decisions are resolved.

Vocabulary

Use terms exactly as defined in CONTEXT.md. Do not introduce synonyms for established concepts.

If a required concept is absent, either reconsider the new term or record the gap through /domain-modeling.

Architectural Decisions

Surface conflicts with existing ADRs explicitly. Do not silently override an accepted decision.

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 · 29 lines · 11 tokens per session scan A e66ff23bab3c

Subscribe to this mod's changes

domain is an agent published in the GitHub repository celados/mcpx (17 stars, last pushed 2d ago), licensed MIT. It adds 11 tokens to every session and 149 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 2026-08-30.

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