openehr-assistant-mcp: Instructions file for Codex

AGENTS.md

openehr-assistant-mcp AGENTS.md is an instructions file for Codex, OpenCode from Cadasto/openehr-assistant-mcp. It costs 2,095 tokens per session, scanned A, original, MIT.

Repository guidance for an openEHR Assistant MCP server, including its documentation map, architecture, requirements, and development practices.

In plain words
What is it for?
Use it when working on this repository to find requirements, architecture decisions, installation guidance, testing procedures, and specification checks.
Why use it?
It gives an AI agent the project’s source of truth and conventions before it changes or validates the code.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions Claude Code; mentions AGENTS.md.

This is Cadasto/openehr-assistant-mcp's own configuration. It tells Codex and OpenCode how to work on openehr-assistant-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 openehr-assistant-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Cadasto/openehr-assistant-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/Cadasto/openehr-assistant-mcp/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/Cadasto/openehr-assistant-mcp

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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Your own site
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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.

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Your own site · 80×15
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Per session 2,095 This file is loaded in full into every session.
When invoked 2,095 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 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 $0.02095 $0.02095
Opus 5 $0.01047 $0.01047
Sonnet 5 $0.00419 $0.00419
Haiku 4.5 $0.00210 $0.00210

Measured 9d ago against content hash 7f84da318a0d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

openehr-assistant-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 9d 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 · 103 lines

How it starts

The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AI Guidelines: openEHR Assistant MCP Server

These guidelines summarize the high-level architecture, coding conventions, and developer workflows for this repository, with the goal of helping an AI agent quickly discover available tooling and work within the project structure.

Documentation map

This repo follows a lightweight Specification-Driven Development paradigm. The spec set under docs/ is the source of truth; AGENTS.md is the concise conventions layer that links into it.

Maintainer tooling. Authoring tools/prompts/guides/examples and managing releases for this repo is supported by the openehr-assistant-dev plugin (Claude Code + Cursor). The user-facing openehr-assistant plugin wraps this server for clinical end users — do not confuse the two audiences.

Project overview

  • The openEHR Assistant MCP Server is a PHP 8.4 MCP server that exposes openEHR tools, prompts, and resources for MCP clients. The codebase is PSR-compliant and structured around attribute-driven discovery. See README.md for the feature overview and capabilities.
  • The project uses the modelcontextprotocol/php-sdk to register tools (#[McpTool]), prompts (#[McpPrompt]), resources (#[McpResourceTemplate]/#[McpResource]), and completion providers (#[CompletionProvider]).

Read the full file on GitHub · 103 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. 9d ago First seen · 103 lines · 2,095 tokens per session scan A 7f84da318a0d

Subscribe to this mod's changes

openehr-assistant-mcp AGENTS.md is an instructions file published in the GitHub repository Cadasto/openehr-assistant-mcp (18 stars, last pushed 1mo ago), licensed MIT. It adds 2,095 tokens to every session, about $0.0105 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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