mcp-wandb: Instructions file for Codex

AGENTS.md

mcp-wandb AGENTS.md is an instructions file for Codex, OpenCode from tsilva/mcp-wandb. It costs 398 tokens per session, scanned A, original, MIT.

Project instructions for an MCP server that exposes Weights & Biases, a service for tracking machine-learning experiments, as tools.

In plain words
What is it for?
Use it when working on tools that list W&B projects and runs, inspect metrics, plot a run’s metrics, or return run details.
Why use it?
It explains the project layout, required Python version, commands, tests, and external settings needed for development.

Instructions file for CodexOpenCode

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

This is tsilva/mcp-wandb's own configuration. It tells Codex and OpenCode how to work on mcp-wandb 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 mcp-wandb configures →

Reuse

Borrowing it

Nothing to install: this file belongs to tsilva/mcp-wandb. 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/tsilva/mcp-wandb/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/tsilva/mcp-wandb

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 mcp-wandb AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/tsilva/mcp-wandb/agents-md.svg)](https://agentmods.dev/instructions/tsilva/mcp-wandb/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/tsilva/mcp-wandb/agents-md"><img src="https://agentmods.dev/badge/instructions/tsilva/mcp-wandb/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 398 This file is loaded in full into every session.
When invoked 398 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 $0.00398 $0.00398
Opus 5 $0.00199 $0.00199
Sonnet 5 $0.00080 $0.00080
Haiku 4.5 $0.00040 $0.00040

Measured 6d ago against content hash b6a2192febb2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

mcp-wandb 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 · 42 lines

What it actually says

CLAUDE.md

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

Project Overview

A Model Context Protocol (MCP) server that exposes Weights & Biases (W&B) functionality as tools. Built with FastMCP, it provides tools for querying W&B projects, runs, metrics, and generating metric plots.

Development Commands

# Install dependencies (requires Python 3.13+)
uv sync

# Run the MCP server (stdio transport)
python server.py

# Run tests (requires W&B API key and test environment variables)
WANDB_API_KEY=<key> TEST_WANDB_ENTITY=<entity> TEST_WANDB_PROJECT=<project> TEST_WANDB_RUN_ID=<run_id> TEST_WANDB_METRICS=<metric1,metric2> pytest tests/

Architecture

Single-file server (server.py): All MCP tools are defined in one file using the @mcp.tool() decorator from FastMCP.

MCP Tools exposed:

  • get_wandb_projects - List projects for an entity
  • list_wandb_runs - List runs in a project
  • list_project_metrics - Get unique metric names across all runs
  • plot_run_metric - Generate PNG plot of metrics (returns base64-encoded image via FastMCP Image)
  • get_run_details - Get comprehensive run info (overview, config, summary, system metrics)

Environment: Requires WANDB_API_KEY environment variable (loaded via python-dotenv from .env file).

Testing Notes

Tests in tests/test_tools.py stub out FastMCP and dotenv to test tool functions directly against the real W&B API. Tests are skipped if required environment variables are not set.

Key Maintenance

README.md must be kept up to date with any significant project changes.

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 · 42 lines · 398 tokens per session scan A b6a2192febb2

Subscribe to this mod's changes

mcp-wandb AGENTS.md is an instructions file published in the GitHub repository tsilva/mcp-wandb (1 stars, last pushed 9d ago), licensed MIT. It adds 398 tokens to every session, about $0.0020 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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