agentmods.dev

sagemath-mcp: Instructions file for Claude Code

CLAUDE.md

sagemath-mcp CLAUDE.md is an instructions file for Claude Code from XBP-Europe/sagemath-mcp. It costs 3,738 tokens per session, scanned A, original, MIT.

A project guide for SageMath MCP, a server that lets language models run SageMath calculations while keeping variables between calls.

In plain words
What is it for?
Use it when developing, testing, linting, packaging, or running integration tests for the SageMath MCP server.
Why use it?
It gives the coding agent the repository’s setup, linting, testing, and build rules, including which tests need the SageMath runtime.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is XBP-Europe/sagemath-mcp's own configuration. It tells Claude Code how to work on sagemath-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 sagemath-mcp configures →

not rated 18repo changed yesterday A scan 3,738 tokens original MIT
View source ↗ XBP-Europe/sagemath-mcp pypi.org
Reuse

Borrowing it

Nothing to install: this file belongs to XBP-Europe/sagemath-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/XBP-Europe/sagemath-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/XBP-Europe/sagemath-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.

agentmods badge for sagemath-mcp CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/xbp-europe/sagemath-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/xbp-europe/sagemath-mcp/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/xbp-europe/sagemath-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/xbp-europe/sagemath-mcp/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>

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.

agentmods 80×15 button for sagemath-mcp CLAUDE.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/xbp-europe/sagemath-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/xbp-europe/sagemath-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3,738 This file is loaded in full into every session.
When invoked 3,738 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 $0.03738 $0.03738
Opus 5.5 $0.01495 $0.01495
Sonnet 5.5 $0.00748 $0.00748
Haiku 4.5 $0.00374 $0.00374

Measured yesterday against content hash cb7cb7884c86, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sagemath-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 yesterday.

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 · 125 lines

How it starts

The opening of the file, as written. The whole thing — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project

SageMath MCP is a Model Context Protocol server exposing stateful SageMath computations to LLM clients via FastMCP. Each MCP session gets a dedicated Sage worker subprocess with persistent variable state across tool calls.

Commands

uv pip install -e .[dev]          # Install with dev extras
make lint                          # uv run ruff check
make typecheck                     # uv run mypy (src/sagemath_mcp; CI runs it too)
make test                          # uv run pytest (pure Python, no Sage needed)
make integration-test              # pytest inside Sage Docker container
make build                         # Build wheel + sdist via scripts/build_release.py
make sage-container                # Bootstrap the Sage Docker container
uv run pytest tests/tools/test_core.py -k "test_name"  # Run a single test

Unit tests run with SAGEMATH_MCP_PURE_PYTHON=1 (uses Python math stdlib instead of Sage). Integration tests require docker exec sage-mcp and real Sage runtime.

Linting

Ruff with line-length 100, target Python 3.12. Rules: E, F, W, B, UP, ASYNC, RUF, I (import sorting), and S (Bandit) for src/ only -- each noqa: S... there carries its reason. mypy checks src/sagemath_mcp (the package ships py.typed); sage_code/ is excluded because it is Sage source. Run make lint and make typecheck before committing.

Testing

  • All async tests use @pytest.mark.asyncio (asyncio_mode is "auto")
  • Tests mirror source modules: test_server.py, test_session.py, test_security.py, test_config.py, etc. Tool tests live in tests/tools/test_<domain>.py (diagnostics, verify and prompts in tests/test_diagnostics.py, test_verify.py and test_prompts.py); tests/stubs.py holds StubSession and _stub_manager.
  • test_integration.py, test_use_cases.py and most of test_math_coverage.py require the Sage container
  • Key fixtures: python_settings (injects force_python_worker=True), FakeContext (records progress events; it has no info/warning/error on purpose, because the server sends no MCP log notifications)

Read the full file on GitHub · 125 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. yesterday Changed · -1 tokens per session cb7cb7884c86
  2. 3d ago Changed · +56 tokens per session 2d0e4d819358
  3. 11d ago Changed · -1 tokens per session af8d33dce39d
  4. 14d ago Changed · +3 lines · +334 tokens per session 26a12acc859b
  5. 17d ago Changed · +1 lines · +129 tokens per session e5d5bfe31188
  6. 22d ago Changed 3883a98d2fd7
  7. 1mo ago Changed · +12 lines · +584 tokens per session 486f2c829d0d
  8. 1mo ago Changed · +123 tokens per session 444a78b44705
  9. 1mo ago Changed · +75 tokens per session cd05c494f29b
  10. 1mo ago First seen · 109 lines · 2,439 tokens per session scan A f57e7e974654

Subscribe to this mod's changes

sagemath-mcp CLAUDE.md is an instructions file published in the GitHub repository XBP-Europe/sagemath-mcp (18 stars, last pushed today), licensed MIT. It adds 3,738 tokens to every session, about $0.0150 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 2026-08-30.

Building agentsLLMScientificai-toolscasclaudecomputer-algebrafastmcp
Related

Other instructions, from other repositories

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 · 9,715 tokens

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 · 7,461 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, cache eligibility and rollout and applying the notice (cutover).

microsoft/vscode · 5,262 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 · 4,680 tokens

vscode copilot-instructions.md

Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).

microsoft/vscode · 2,731 tokens

vscode model-prompts.instructions.md

Model-specific prompt authoring and registry guidelines.

microsoft/vscode · 2,022 tokens