How do I install the Wandb skill?

Run npx skillmds@latest add demerzels-lab/wandb in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Wandb safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Wandb?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Wandb free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Demerzels-lab (@demerzels-lab) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Wandb by demerzels-lab — Agent Skill

Name: Wandb
Author: Demerzels-lab

Wandb

Monitor and analyze Weights & Biases training runs. Use when checking training status, detecting failures, analyzing loss curves, comparing runs, or monitoring experiments. Triggers on "wandb", "training runs", "how's training", "did my run finish", "any failures", "check experiments", "loss curve", "gradient norm", "compare runs".

Demerzels-lab edabfea 7 files · 40.2 KB Updated Sep 17, 2026 10 repo stars

File contents

Weights & Biases

Monitor, analyze, and compare W&B training runs.

Setup

wandb login
# Or set WANDB_API_KEY in environment

Scripts

Characterize a Run (Full Health Analysis)

~/clawd/venv/bin/python3 ~/clawd/skills/wandb/scripts/characterize_run.py ENTITY/PROJECT/RUN_ID

Analyzes:

Loss curve trend (start → current, % change, direction)
Gradient norm health (exploding/vanishing detection)
Eval metrics (if present)
Stall detection (heartbeat age)
Progress & ETA estimate
Config highlights
Overall health verdict

Options: --json for machine-readable output.

Watch All Running Jobs

~/clawd/venv/bin/python3 ~/clawd/skills/wandb/scripts/watch_runs.py ENTITY [--projects p1,p2]

Quick health summary of all running jobs plus recent failures/completions. Ideal for morning briefings.

Options:

--projects p1,p2 — Specific projects to check
--all-projects — Check all projects
--hours N — Hours to look back for finished runs (default: 24)
--json — Machine-readable output

Compare Two Runs

~/clawd/venv/bin/python3 ~/clawd/skills/wandb/scripts/compare_runs.py ENTITY/PROJECT/RUN_A ENTITY/PROJECT/RUN_B

Side-by-side comparison:

Config differences (highlights important params)
Loss curves at same steps
Gradient norm comparison
Eval metrics
Performance (tokens/sec, steps/hour)
Winner verdict

Python API Quick Reference

import wandb
api = wandb.Api()

# Get runs
runs = api.runs("entity/project", {"state": "running"})

# Run properties
run.state      # running | finished | failed | crashed | canceled
run.name       # display name
run.id         # unique identifier
run.summary    # final/current metrics
run.config     # hyperparameters
run.heartbeat_at # stall detection

# Get history
history = list(run.scan_history(keys=["train/loss", "train/grad_norm"]))

Metric Key Variations

Scripts handle these automatically:

Loss: train/loss, loss, train_loss, training_loss
Gradients: train/grad_norm, grad_norm, gradient_norm
Steps: train/global_step, global_step, step, _step
Eval: eval/loss, eval_loss, eval/accuracy, eval_acc

Health Thresholds

Gradients > 10: Exploding (critical)
Gradients > 5: Spiky (warning)
Gradients < 0.0001: Vanishing (warning)
Heartbeat > 30min: Stalled (critical)
Heartbeat > 10min: Slow (warning)

Integration Notes

For morning briefings, use watch_runs.py --json and parse the output.

For detailed analysis of a specific run, use characterize_run.py.

For A/B testing or hyperparameter comparisons, use compare_runs.py.

---name: wandbdescription: Monitor and analyze Weights & Biases training runs. Use when checking training status, detecting failures, analyzing loss curves, comparing runs, or monitoring experiments. Triggers on "wandb", "training runs", "how's training", "did my run finish", "any failures", "check experiments", "loss curve", "gradient norm", "compare runs".---# Weights & BiasesMonitor, analyze, and compare W&B training runs.## Setup```bashwandb login# Or set WANDB_API_KEY in environment```## Scripts### Characterize a Run (Full Health Analysis)```bash~/clawd/venv/bin/python3 ~/clawd/skills/wandb/scripts/characterize_run.py ENTITY/PROJECT/RUN_ID```Analyzes:- Loss curve trend (start → current, % change, direction)- Gradient norm health (exploding/vanishing detection) - Eval metrics (if present)- Stall detection (heartbeat age)- Progress & ETA estimate- Config highlights- Overall health verdictOptions: `--json` for machine-readable output.### Watch All Running Jobs```bash~/clawd/venv/bin/python3 ~/clawd/skills/wandb/scripts/watch_runs.py ENTITY [--projects p1,p2]```Quick health summary of all running jobs plus recent failures/completions. Ideal for morning briefings.Options:- `--projects p1,p2` — Specific projects to check- `--all-projects` — Check all projects- `--hours N` — Hours to look back for finished runs (default: 24)- `--json` — Machine-readable output### Compare Two Runs```bash~/clawd/venv/bin/python3 ~/clawd/skills/wandb/scripts/compare_runs.py ENTITY/PROJECT/RUN_A ENTITY/PROJECT/RUN_B```Side-by-side comparison:- Config differences (highlights important params)- Loss curves at same steps- Gradient norm comparison- Eval metrics- Performance (tokens/sec, steps/hour)- Winner verdict## Python API Quick Reference```pythonimport wandbapi = wandb.Api()# Get runsruns = api.runs("entity/project", {"state": "running"})# Run propertiesrun.state # running | finished | failed | crashed | canceledrun.name # display namerun.id # unique identifierrun.summary # final/current metricsrun.config # hyperparametersrun.heartbeat_at # stall detection# Get historyhistory = list(run.scan_history(keys=["train/loss", "train/grad_norm"]))```## Metric Key VariationsScripts handle these automatically:- Loss: `train/loss`, `loss`, `train_loss`, `training_loss`- Gradients: `train/grad_norm`, `grad_norm`, `gradient_norm`- Steps: `train/global_step`, `global_step`, `step`, `_step`- Eval: `eval/loss`, `eval_loss`, `eval/accuracy`, `eval_acc`## Health Thresholds- **Gradients > 10**: Exploding (critical)- **Gradients > 5**: Spiky (warning)- **Gradients < 0.0001**: Vanishing (warning)- **Heartbeat > 30min**: Stalled (critical)- **Heartbeat > 10min**: Slow (warning)## Integration NotesFor morning briefings, use `watch_runs.py --json` and parse the output.For detailed analysis of a specific run, use `characterize_run.py`.For A/B testing or hyperparameter comparisons, use `compare_runs.py`.

Frequently asked questions