LTSpice-MCP: Instructions file for Codex

AGENTS.md

LTSpice-MCP AGENTS.md is an instructions file for Codex, OpenCode from AbiyuLingga/LTSpice-MCP. It costs 4,099 tokens per session, scanned A, original, MIT.

A repository guide for AI coding agents working on LTSpice-MCP, a local Python command-line tool and server for generating, simulating, inspecting, and reusing LTspice electronic circuits.

In plain words
What is it for?
Use it as the entry point for work on the LTspice agent, including project creation, circuit planning, simulation-related changes, and following the project's execution milestones.
Why use it?
It gives agents the project's current purpose, roadmap boundaries, operating rules, and local context in one canonical document. This helps them avoid outdated plans and unsafe or inconsistent changes.

Instructions file for CodexOpenCode

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

This is AbiyuLingga/LTSpice-MCP's own configuration. It tells Codex and OpenCode how to work on LTSpice-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 LTSpice-MCP configures →

Not installable: its command points at a path on the author’s own machine, so it runs nowhere else. The line is /home/abiyulinx/.wine/drive_c/Program.

Reuse

Borrowing it

Nothing to install: this file belongs to AbiyuLingga/LTSpice-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/AbiyuLingga/LTSpice-MCP/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/AbiyuLingga/LTSpice-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 LTSpice-MCP AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/abiyulingga/ltspice-mcp/agents-md.svg)](https://agentmods.dev/instructions/abiyulingga/ltspice-mcp/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/abiyulingga/ltspice-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/abiyulingga/ltspice-mcp/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 4,099 This file is loaded in full into every session.
When invoked 4,099 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 $0.04099 $0.04099
Opus 5 $0.02049 $0.02049
Sonnet 5 $0.00820 $0.00820
Haiku 4.5 $0.00410 $0.00410

Measured 6d ago against content hash 737db11bac94, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

LTSpice-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 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.

AGENTS.md · 312 lines

How it starts

The opening of the file, as written. The whole thing — 312 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Operational guide for AI coding agents working inside this repository. This file is the canonical entry point. CLAUDE.md, OPENCODE.md, and MCP.md are thin shims that point here.

What this project is

ltspice-ai-agent is a local Python CLI plus a local MCP server that lets AI agents safely generate, simulate, inspect, and reuse LTspice circuits. The Python core owns all validation, file generation, and simulation execution. The agent proposes intent, parameters, and topology only.

The active long-term plan lives in docs/AI_HARDWARE_AGENT_ROADMAP.md. docs/PROJECT_PLAN.md remains the historical analog MVP plan. Phase 12 (Tiny8) is complete and the Phase 13 live-editing/Math Core surface is an integrated prototype. New work follows the serialized single-agent milestones in docs/SINGLE_AGENT_EXECUTION_PLAN.md.

Phase 7 (Create Project Workflow) is complete. ltagent create takes either an IR JSON file path or a natural-language prompt, runs the planner, and writes the full project artefact set. Refusal paths return the create.refused structured payload.

Phase 8 (Rule-Based Planner) is complete. ltagent plan "<prompt>" parses a small, deterministic set of English and Indonesian prompts into a validated CircuitIR. See src/ltagent/planner.py and the public API: plan_prompt(text: str) -> CircuitIR | PlannerRefusal. The CLI subcommand mirrors that. Do not introduce an LLM-backed planner before documenting the contract change in an ADR; Phase 8 is intentionally rule-based.

Phase 9 (Template Evaluator / Promoter) is complete. Failed simulation, low layout score, and duplicate value-only templates cannot become official. Promotion is manual via ltagent template promote. The evaluator records the score and gates from plan §15.3.

Phase 10 (MCP Server v1) is complete. ltagent-mcp (after pip install "ltspice-ai-agent[mcp]") runs an stdio MCP server that originally shipped 10 curated tools and 8 curated resources backed by the same Python core. The current integrated surface exposes 27 tools and 16 resources. No run_shell, no execute_python, no generic read_file/write_file, no .raw exposure. See MCP.md and docs/mcp_setup.md.

Read the full file on GitHub · 312 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. 6d ago First seen · 312 lines · 4,099 tokens per session scan A 737db11bac94

Subscribe to this mod's changes

LTSpice-MCP AGENTS.md is an instructions file published in the GitHub repository AbiyuLingga/LTSpice-MCP (0 stars, last pushed 2mo ago), licensed MIT. It adds 4,099 tokens to every session, about $0.0205 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.

Related

Other instructions, from other repositories

next.js AGENTS.md

AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.

vercel/next.js · 7,296 tokens

codex AGENTS.md

AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.

openai/codex · 5,182 tokens

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 · 6,785 tokens

vscode oss-third-party-notices.instructions.md

Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).

microsoft/vscode · 5,001 tokens

langchain AGENTS.md

AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.

langchain-ai/langchain · 4,469 tokens

spec-kit AGENTS.md

AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.

github/spec-kit · 7,104 tokens