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pyslang-mcp AGENTS.md

pyslang-mcp AGENTS.md is an instructions file for Codex, OpenCode from ariklapid/pyslang-mcp. It costs 1,439 tokens per session, scanned A, original, Apache-2.0.

Project instructions for an MCP server that gives AI systems read-only, compiler-based understanding of Verilog and SystemVerilog hardware projects. It can parse source files, inspect design units and hierarchy, find symbols, and trace connections.

In plain words
What is it for?
Use them when developing or contributing to the server's parsing, diagnostics, hierarchy, symbol-search, assignment, connectivity, preprocessing, and project-summary features.
Why use it?
They define a limited, documented tool set so the server analyses hardware code without being mistaken for a simulator or electronic-design runtime.

Instructions file for CodexOpenCode

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

not rated 20 2mo ago A scan 1,439 tokens original Apache-2.0
View the source file ariklapid/pyslang-mcp
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 instructions/ariklapid/pyslang-mcp/agents-md
Clone the repo
git clone --depth 1 https://github.com/ariklapid/pyslang-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 pyslang-mcp AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/ariklapid/pyslang-mcp/agents-md.svg)](https://agentmods.dev/instructions/ariklapid/pyslang-mcp/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/ariklapid/pyslang-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/ariklapid/pyslang-mcp/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 1,439 This file is loaded in full into every session.
When invoked 1,439 The same file — it is already loaded in full.
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 5.1 $0.01439 $0.01439
Opus 5 $0.00720 $0.00720
Sonnet 5 $0.00288 $0.00288
Haiku 4.5 $0.00144 $0.00144

Measured 6d ago against content hash 6befb7ddf089, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

pyslang-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 · 170 lines

How it starts

The opening of the file, as written. The whole thing — 170 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

This file is the public contributor and agent guidance for pyslang-mcp. Read this first, then read README.md, CONTRIBUTING.md, and REMOTE_DEPLOYMENT.md when the task touches deployment.

Mission

Build a professional, open-source MCP server that gives AI systems compiler-backed, read-only understanding of Verilog and SystemVerilog projects through pyslang.

The product is a semantic analysis MCP, not an EDA runtime. Keep scope tight and technically honest.

Product Scope

The public tool surface is:

  • pyslang_parse_files
  • pyslang_parse_filelist
  • pyslang_get_diagnostics
  • pyslang_list_design_units
  • pyslang_describe_design_unit
  • pyslang_get_hierarchy
  • pyslang_find_symbol
  • pyslang_find_member
  • pyslang_get_assignments
  • pyslang_trace_connectivity
  • pyslang_get_instance_connections
  • pyslang_summarize_diagnostics_by_code
  • pyslang_dump_syntax_tree_summary
  • pyslang_preprocess_files
  • pyslang_get_project_summary

Planned tools are not part of the public tool surface until implemented, tested, and documented.

Current Implementation Plan

Issue #15 Verilog analysis work has a public-safe implementation plan at docs/superpowers/plans/2026-06-11-verilog-mcp-functions.md.

When executing that plan:

  • follow the plan task-by-task and update checkboxes as work completes
  • implement pyslang_find_member, pyslang_get_assignments, pyslang_trace_connectivity, pyslang_get_instance_connections, and pyslang_summarize_diagnostics_by_code
  • do not implement pyslang_parse_generated_cache as part of that plan
  • do not advertise planned tools as released behavior until the code, tests, docs, and MCP protocol smoke coverage are complete
  • preserve the read-only, project-root, bounded-output, and cache invariants in this file

Non-goals:

  • simulation
  • synthesis
  • waveform viewing
  • testbench generation
  • RTL editing or refactoring through MCP tools
  • remote code execution
  • full IDE or language-server parity

Read the full file on GitHub · 170 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 · 170 lines · 1,439 tokens per session scan A 6befb7ddf089

Subscribe to this mod's changes

pyslang-mcp AGENTS.md is an instructions file published in the GitHub repository ariklapid/pyslang-mcp (20 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 1,439 tokens to every session, about $0.0072 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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