Borrowing it
Nothing to install: this file belongs to LerianStudio/lerian-mcp-server. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/LerianStudio/lerian-mcp-server/main/AGENTS.mdgit clone --depth 1 https://github.com/LerianStudio/lerian-mcp-serverWrote 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.
[](https://agentmods.dev/instructions/lerianstudio/lerian-mcp-server/agents-md)<a href="https://agentmods.dev/instructions/lerianstudio/lerian-mcp-server/agents-md"><img src="https://agentmods.dev/badge/instructions/lerianstudio/lerian-mcp-server/agents-md.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00495 | $0.00495 |
| Opus 5 | $0.00247 | $0.00247 |
| Sonnet 5 | $0.00099 | $0.00099 |
| Haiku 4.5 | $0.00049 | $0.00049 |
Grade A, and why
lerian-mcp-server 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 6d 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.
How it starts
The opening of the file, as written. The whole thing — 51 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Repository Agent Instructions
This repository contains the Lerian MCP Server: a Node.js ESM package that exposes Lerian portfolio discovery, documentation, live product API adapters, and cross-product workflows through the Model Context Protocol.
Runtime Facts
- Main source entrypoint:
src/index.ts. - NPX/package entrypoint:
src/bin/lerian-mcp-server.js. - Build output:
dist/. - Runtime transport: MCP stdio. Keep stdout clean for protocol messages.
- Minimum Node.js version:
>=20.19.0. - Primary package manager: npm with
package-lock.json.
Development Commands
- Install dependencies:
npm ci. - Build:
npm run build. - Typecheck:
npm run typecheck. - Lint:
npm run lint. - Test:
npm test. - Run development server:
npm run dev.
Implementation Rules
- Prefer small, direct changes over broad rewrites.
- Keep MCP stdio safe: do not add normal stdout logging during server startup or tool execution.
- Use stderr or the existing logging utilities for diagnostics.
- Preserve the discover-before-execute pattern for live product APIs.
- Mutating live API actions must continue to require
confirmMutation=trueandmutationReason. - Do not weaken URL validation, protected header handling, upload/download byte limits, or output sanitization.
- Do not commit secrets, tokens, local config files, generated logs, or build artifacts unless explicitly requested.
Architecture Pointers
- Core tool:
src/tools/lerian.js. - Cross-product workflow tool:
src/tools/portfolio-workflow.js. - Product adapter registry:
src/products/index.js. - Product metadata:
src/catalog/product-registry.js. - Runtime surface metadata:
src/runtime/surface-registry.js. - Live API safety helpers:
src/products/http-helpers.js. - Midaz API schemas:
src/api/schemas/. - Other product schemas:
src/products/*/schemas/. - Workflows:
src/workflows/. - Prompt registrations:
src/prompts/.
Documentation Rules
- Keep
README.mdaligned with the runtime, not historical package claims. - Keep
docs/media/README.mdsynchronized with registered tools, products, and workflows. - If a doc says the server is documentation-only, verify against
src/index.tsbefore preserving that statement.
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.
- 6d ago First seen · 51 lines · 495 tokens per session scan A fb81f96740f2
lerian-mcp-server AGENTS.md is an instructions file published in the GitHub repository LerianStudio/lerian-mcp-server (8 stars, last pushed 6d ago), licensed Apache-2.0. It adds 495 tokens to every session, about $0.0025 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 2026-08-31.
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