What is simplifier-mcp CLAUDE.md?

Development instructions for an MCP server that connects AI assistants to the Simplifier low-code platform through its REST API. Simplifier is a platform for creating integrations and server-side JavaScript business logic.

Use it when configuring, building, testing, or extending the server for Simplifier connectors and BusinessObjects.

It documents the project structure and the required Simplifier token, which behaves like a short-lived session credential and may need daily renewal. It also records the current implementation status.

How simplifier-ag/simplifier-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to simplifier-ag/simplifier-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/simplifier-ag/simplifier-mcp/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/simplifier-ag/simplifier-mcp

Made for: Claude Code.

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.

README.md

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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.

Your own site · 80×15

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Per session 808 This file is loaded in full into every session.

When invoked 808 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.

Model	Per session	Once invoked
Fable 5.1	$0.00808	$0.00808
Opus 5.5	$0.00323	$0.00323
Sonnet 5.5	$0.00162	$0.00162
Haiku 4.5	$0.00081	$0.00081

Measured 27d ago against content hash 181df406ddac, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

simplifier-mcp CLAUDE.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 27d 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.md · 89 lines

How it starts

The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Claude Development Notes

This file contains development notes and instructions for Claude when working on this project.

Project Overview

This is a Model Context Protocol (MCP) server for the Simplifier Low Code Platform. The server enables AI assistants to interact with Simplifier's REST API to create and manage:

Simplifier Connectors: Integration components that connect external systems
BusinessObjects (BOs): Server-side executed JavaScript functions for business logic

Key Implementation Details

Authentication

Exactly one of the following environment variables must be set:

SIMPLIFIER_TOKEN: SimplifierToken with session-like behavior, needs daily refresh (depending on token settings of Simplifier); sent as SimplifierToken header
SIMPLIFIER_CREDENTIALS_FILE: JSON file with user/pass, used to obtain a SimplifierToken via genToken; sent as SimplifierToken header
SIMPLIFIER_APITOKEN: personal access token (PAT); sent as ApiToken header, no login performed

Configuration

Base URL of Simplifiers REST API configured via SIMPLIFIER_BASE_URL environment variable
Default development URL: http://localhost:8080 (matches user's Simplifier server port)
Configuration validation in src/config.ts

Current Status

Infrastructure: ✅ Complete (TypeScript, Jest, ESM, build system)
MCP Server: ✅ Basic server with empty capabilities
API Client: ✅ Structure in place with authentication placeholders
Tests: ✅ All tests passing
Capabilities: ❌ Empty arrays - tools, resources, prompts need implementation

Testing

Run tests: pnpm test
Build project: pnpm run build
Start server: pnpm run dev or pnpm start
Test MCP protocol: echo '{"jsonrpc": "2.0", "id": 1, "method": "tools/list"}' | node dist/index.js

File Structure Notes

src/tools/index.ts - Empty tools array, ready for Simplifier tool implementations
src/resources/index.ts - Empty resources array, ready for platform data access
src/prompts/index.ts - Empty prompts array, ready for guided operations
src/client/ - API client with placeholder authentication
__tests__/ - Comprehensive test suite covering all modules

Read the full file on GitHub · 89 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.

27d ago Changed · +1 lines · +67 tokens per session 181df406ddac
2mo ago First seen · 88 lines · 741 tokens per session scan A 2745083fec8e

Subscribe to this mod's changes

simplifier-mcp CLAUDE.md is an instructions file published in the GitHub repository simplifier-ag/simplifier-mcp (5 stars, last pushed 28d ago), licensed MIT. It adds 808 tokens to every session, about $0.0032 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.

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 9,719 tokens

simplifier-mcp: Instructions file for Claude Code