Agent skill

Pp Gravitus

by mvanhorn in mvanhorn/printing-press-library

The only CLI that syncs your Gravitus strength data into your training dashboard.

Apache-2.0Auto-check: notesProductivity & Automation

Install Pp Gravitus

skills CLI
$ npx skills add mvanhorn/printing-press-library --skill pp-gravitus -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install mvanhorn/printing-press-library pp-gravitus --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/mvanhorn/printing-press-library.git skills-src && mkdir -p .claude/skills && cp -r skills-src/cli-skills/pp-gravitus .claude/skills/pp-gravitus && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
pp-gravitus
GitHub stars
2.1k
Token cost
~2.9k tokens
SKILL.md length
1,217 words
Files
1
Skills in repo
506
Repo updated
First seen
Licence
Apache-2.0

At a glance

The only CLI that syncs your Gravitus strength data into your training dashboard.

  • Works in 3 steps: Install via the Printing Press… → Verify: gravitus-pp-cli --version → Ensure the reported install directory is…
  • Phrases: sync my Gravitus workouts
  • SKILL.md covers Prerequisites: Install the CLI, When to Use This CLI, When Not to Use This CLI and Unique Capabilities, plus 12 more sections
  • Calls claude, npx and go

What it does

Pp Gravitus is an agent skill from mvanhorn/printing-press-library. The only CLI that syncs your Gravitus strength data into your training dashboard. Trigger phrases: sync my Gravitus workouts, load my lifting data into the dashboard, find my plateau lifts, export my Gravitus data, check my personal records, use gravitus, run gravitus-pp-cli.

Its SKILL.md is about 2.9k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Productivity & Automation, covering Health and fitness tracking. The repository describes itself as: Official library of CLIs generated by the CLI Printing Press. Endorsed, tested, and community-contributed. The licence is Apache-2.0.

When your agent uses it

  • Phrases: sync my Gravitus workouts
  • Load my lifting data into the dashboard
  • Find my plateau lifts
  • Export my Gravitus data

Example prompts

  • “/pp-gravitus”

Requirements

  • Node.js
  • Pre-approved tools (allowed-tools): Read, Bash

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Install via the Printing Press installer. It defaults binaries to $HOME/.local/bin on macOS/Linux and…
  2. Verify: gravitus-pp-cli --version
  3. Ensure the reported install directory is on $PATH for the agent/runtime that will invoke this skill.

What it can do on your machine

Read from SKILL.md and the folder at commit d9a1696. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Bash

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • claude
    • npx
    • go

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use npx, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Pp Gravitus loads about 2.9k tokens when it runs. Until then it costs about 76 tokens; SKILL.md has 1,217 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~76
When it runs · the whole SKILL.md, loaded when a task matches
~2.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
    allowed-tools: Read, Bash

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from mvanhorn/printing-press-library at commit d9a1696, republished under its Apache-2.0 licence (© mvanhorn). 1,217 words, ~2,853 tokens.

Download SKILL.mdSave it as .claude/skills/pp-gravitus/SKILL.md (or your agent's skills folder).
name
pp-gravitus
description
The only CLI that syncs your Gravitus strength data into your training dashboard. Trigger phrases: `sync my Gravitus workouts`, `load my lifting data into the dashboard`, `find my plateau lifts`, `export my Gravitus data`, `check my personal records`, `use gravitus`, `run gravitus-pp-cli`.
allowed-tools
Read, Bash
author
mvanhorn
license
Apache-2.0
argument-hint
<command> [args] | install cli|mcp
<!-- GENERATED FILE — DO NOT EDIT.
     This file is a verbatim mirror of library/other/gravitus/SKILL.md,
     regenerated post-merge by tools/generate-skills/. Hand-edits here are
     silently overwritten on the next regen. Edit the library/ source instead.
     See the repository agent guide, section "Generated artifacts: registry.json, cli-skills/". -->

Gravitus — Printing Press CLI

Prerequisites: Install the CLI

This skill drives the gravitus-pp-cli binary. You must verify the CLI is installed before invoking any command from this skill. If it is missing, install it first:

  1. Install via the Printing Press installer. It defaults binaries to $HOME/.local/bin on macOS/Linux and %LOCALAPPDATA%\Programs\PrintingPress\bin on Windows:
    bash
    npx -y @mvanhorn/printing-press-library install gravitus --cli-only
  2. Verify: gravitus-pp-cli --version
  3. Ensure the reported install directory is on $PATH for the agent/runtime that will invoke this skill.

If the npx install fails (no Node, offline, etc.), fall back to a direct Go install (requires Go 1.26.6 or newer):

bash
go install github.com/mvanhorn/printing-press-library/library/other/gravitus/cmd/gravitus-pp-cli@latest

If --version reports "command not found" after install, the runtime cannot see the binary directory on $PATH. Do not proceed with skill commands until verification succeeds.

When to Use This CLI

Use gravitus-pp-cli as the data pipeline for any training dashboard or analysis tool that needs Gravitus workout data. It is the only reliable way to authenticate with Gravitus, paginate full workout history, and write structured LiftingSession records into SQLite.

When Not to Use This CLI

Do not activate this CLI for requests that require creating, updating, deleting, publishing, commenting, upvoting, inviting, ordering, sending messages, booking, purchasing, or changing remote state. This printed CLI exposes read-only commands for inspection, export, sync, and analysis.

Unique Capabilities

These capabilities aren't available in any other tool for this API.

Dashboard pipeline
  • sync — Sync all Gravitus workouts into your training dashboard's SQLite database — writes LiftingSession records in the exact Prisma schema format with auth, pagination, and incremental support.

    Use to populate the training dashboard's lifting data — the only reliable way to authenticate and paginate all workout history into dev.db.

    bash
    gravitus-pp-cli gravitus-sync --dashboard-db ./prisma/dev.db
  • export — Export your complete Gravitus training history to CSV or JSON — the first and only way to get your data out of Gravitus.

    Use when a coach, analyst, or AI agent needs the full training history outside the app.

    bash
    gravitus-pp-cli export --format csv --output training_history.csv
Analytics
  • exercises plateau — Identifies exercises where estimated 1RM hasn't improved in N weeks — alert-style output for the dashboard coaching panel.

    Use before a program change — gives evidence-based list of which lifts need intervention.

    bash
    gravitus-pp-cli exercises plateau --weeks 6 --agent
  • stats volume — Weekly total lifting volume (lbs) aggregated from all synced sessions — the same metric the dashboard LiftingSection displays.

    Use to feed the dashboard's volume trend chart or check load progression over a training block.

    bash
    gravitus-pp-cli stats volume --weeks 12 --agent
  • exercises prs — All-time PRs across every exercise, extracted from PR markers on workout pages.

    Use to display the personal records panel in the dashboard or track PR cadence.

    bash
    gravitus-pp-cli exercises prs --agent

HTTP Transport

This CLI uses Chrome-compatible HTTP transport for browser-facing endpoints. It does not require a resident browser process for normal API calls.

Command Reference

accounts — Authentication — login and session management

  • gravitus-pp-cli accounts — Fetch login page to retrieve CSRF token

exercises — Exercise history, personal records, and volume trends

  • gravitus-pp-cli exercises <exercise_slug> — Fetch exercise history with PR timeline and volume data

users — User profile and paginated workout history

  • gravitus-pp-cli users <user_id> — Fetch user profile and paginated workout history list

workouts — Workout sessions with exercises, sets, reps, weight, and PRs

  • gravitus-pp-cli workouts <workout_id> — Fetch full workout detail — exercises, sets, reps, weight, personal records
Finding the right command

When you know what you want to do but not which command does it, ask the CLI directly:

bash
gravitus-pp-cli which "<capability in your own words>"

which resolves a natural-language capability query to the best matching command from this CLI's curated feature index. Exit code 0 means at least one match; exit code 2 means no confident match — fall back to --help or use a narrower query.

Recipes

Full initial sync into dashboard
bash
gravitus-pp-cli gravitus-sync --dashboard-db ./prisma/dev.db

Pulls all workout pages with pagination and writes every session to dev.db

Incremental sync (run daily)
bash
gravitus-pp-cli gravitus-sync --incremental --dashboard-db ./prisma/dev.db

Only fetches workouts not already in dev.db — fast and safe to run repeatedly

Find plateaued lifts for coaching panel
bash
gravitus-pp-cli exercises plateau --weeks 6 --agent --select exercise,last_pr_date,weeks_stalled

Returns structured JSON of stalled lifts for the dashboard coaching panel

Export full history to CSV
bash
gravitus-pp-cli export --format csv --output training_history.csv

Dumps every workout and set to CSV — useful for offline analysis or backup

Weekly volume for charting
bash
gravitus-pp-cli stats volume --weeks 12 --agent

Returns 12 weeks of volume totals as JSON — feed directly to a Recharts bar chart

Auth Setup

Gravitus uses Django session auth. Run gravitus-pp-cli auth login-password with your email and password — the CLI handles the CSRF token exchange and stores your session cookie in the config file. Re-run auth login whenever the session expires (typically every few weeks).

Run gravitus-pp-cli doctor to verify setup.

Show full SKILL.md (523 more words)Show less

Agent Mode

Add --agent to any command. Expands to: --json --compact --no-input --no-color --yes.

  • Pipeable — JSON on stdout, errors on stderr

  • Filterable — --select keeps a subset of fields. Dotted paths descend into nested structures; arrays traverse element-wise. Critical for keeping context small on verbose APIs:

    bash
    gravitus-pp-cli exercises mock-value --agent --select id,name,status
  • Previewable — --dry-run shows the request without sending

  • Offline-friendly — sync/search commands can use the local SQLite store when available

  • Non-interactive — never prompts, every input is a flag

  • Read-only — do not use this CLI for create, update, delete, publish, comment, upvote, invite, order, send, or other mutating requests

Response envelope

Commands that read from the local store or the API wrap output in a provenance envelope:

json
{
  "meta": {"source": "live" | "local", "synced_at": "...", "reason": "..."},
  "results": <data>
}

Parse .results for data and .meta.source to know whether it's live or local. A human-readable N results (live) summary is printed to stderr only when stdout is a terminal AND no machine-format flag (--json, --csv, --compact, --quiet, --plain, --select) is set — piped/agent consumers and explicit-format runs get pure JSON on stdout.

Agent Feedback

When you (or the agent) notice something off about this CLI, record it:

gravitus-pp-cli feedback "the --since flag is inclusive but docs say exclusive"
gravitus-pp-cli feedback --stdin < notes.txt
gravitus-pp-cli feedback list --json --limit 10

Entries are stored locally at ~/.gravitus-pp-cli/feedback.jsonl. They are never POSTed unless GRAVITUS_FEEDBACK_ENDPOINT is set AND either --send is passed or GRAVITUS_FEEDBACK_AUTO_SEND=true. Default behavior is local-only.

Write what surprised you, not a bug report. Short, specific, one line: that is the part that compounds.

Output Delivery

Every command accepts --deliver <sink>. The output goes to the named sink in addition to (or instead of) stdout, so agents can route command results without hand-piping. Three sinks are supported:

SinkEffect
stdoutDefault; write to stdout only
file:<path>Atomically write output to <path> (tmp + rename)
webhook:<url>POST the output body to the URL (application/json or application/x-ndjson when --compact)

Unknown schemes are refused with a structured error naming the supported set. Webhook failures return non-zero and log the URL + HTTP status on stderr.

Named Profiles

A profile is a saved set of flag values, reused across invocations. Use it when a scheduled agent calls the same command every run with the same configuration - HeyGen's "Beacon" pattern.

gravitus-pp-cli profile save briefing --json
gravitus-pp-cli --profile briefing exercises mock-value
gravitus-pp-cli profile list --json
gravitus-pp-cli profile show briefing
gravitus-pp-cli profile delete briefing --yes

Explicit flags always win over profile values; profile values win over defaults. agent-context lists all available profiles under available_profiles so introspecting agents discover them at runtime.

Exit Codes

CodeMeaning
0Success
2Usage error (wrong arguments)
3Resource not found
4Authentication required
5API error (upstream issue)
7Rate limited (wait and retry)
10Config error

Argument Parsing

Parse $ARGUMENTS:

  1. Empty, help, or --help → show gravitus-pp-cli --help output
  2. Starts with install → ends with mcp → MCP installation; otherwise → see Prerequisites above
  3. Anything else → Direct Use (execute as CLI command with --agent)

MCP Server Installation

Install the MCP binary from this CLI's published public-library entry or pre-built release, then register it:

bash
claude mcp add gravitus-pp-mcp -- gravitus-pp-mcp

Verify: claude mcp list

Direct Use

  1. Check if installed: which gravitus-pp-cli If not found, offer to install (see Prerequisites at the top of this skill).
  2. Match the user query to the best command from the Unique Capabilities and Command Reference above.
  3. Execute with the --agent flag:
    bash
    gravitus-pp-cli <command> [subcommand] [args] --agent
  4. If ambiguous, drill into subcommand help: gravitus-pp-cli <command> --help.

© mvanhorn, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in cli-skills/pp-gravitus of mvanhorn/printing-press-library.

Open the folder on GitHubat commit d9a1696

Compare with similar skills

Pp Gravitus next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Pp Gravitus compared with similar skills
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Pp Gravitus this skillmvanhorn/printing-press-library2.1k—~2.9kAutomated safety check: NotesApache-2.0
Coachfelixrieseberg/claude-coach1991 repos~4.9kAutomated safety check: PassMIT
Fitness Analyzerhuifer/WellAlly-health9605 repos~1.3kAutomated safety check: PassMIT
Master Ajahn Chahxr843/Master-skill4471 repos~2kAutomated safety check: PassCC-BY-NC-SA-4.0
Mental Health Analyzerhuifer/WellAlly-health9605 repos~3.2kAutomated safety check: PassMIT
Nutrition Analyzerhuifer/WellAlly-health9605 repos~3.3kAutomated safety check: PassMIT

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Questions about Pp Gravitus

What does Pp Gravitus do?

The only CLI that syncs your Gravitus strength data into your training dashboard. Pp Gravitus is an agent skill from mvanhorn/printing-press-library. The only CLI that syncs your Gravitus strength data into your training dashboard.

When should I use Pp Gravitus?

Pp Gravitus fits situations like: phrases: sync my Gravitus workouts; load my lifting data into the dashboard; find my plateau lifts; export my Gravitus data.

How do I install Pp Gravitus in Claude Code?

Run `npx skills add mvanhorn/printing-press-library --skill pp-gravitus -a claude-code`. Or copy the skill folder (cli-skills/pp-gravitus in mvanhorn/printing-press-library) into .claude/skills/pp-gravitus in your project. Claude Code loads it when a task matches its description.

How do I install Pp Gravitus in Codex?

Run `npx skills add mvanhorn/printing-press-library --skill pp-gravitus -a codex`. Or copy the skill folder (cli-skills/pp-gravitus in mvanhorn/printing-press-library) into .agents/skills/pp-gravitus in your project. Codex loads it when a task matches its description.

Can I use Pp Gravitus in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add mvanhorn/printing-press-library --skill pp-gravitus -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/pp-gravitus, .gemini/skills/pp-gravitus, .github/skills/pp-gravitus and .opencode/skills/pp-gravitus in your project.

What does Pp Gravitus need to run?

Going by SKILL.md and its folder, Pp Gravitus needs the command-line tools its instructions call (claude, npx and go). Our summary lists: Node.js. Its frontmatter pre-approves these tools: Read, Bash.

Does Pp Gravitus access the network?

SKILL.md contains no URLs. Its commands use npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Pp Gravitus safe to install?

Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Pp Gravitus use?

Pp Gravitus is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Pp Gravitus use?

About 2.9k tokens (SKILL.md is roughly 11k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Pp Gravitus?

Skills that share tags, products or a category with Pp Gravitus: Coach (felixrieseberg/claude-coach, 199 stars), Fitness Analyzer (huifer/WellAlly-health, 960 stars), Master Ajahn Chah (xr843/Master-skill, 447 stars) and Mental Health Analyzer (huifer/WellAlly-health, 960 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Pp Gravitus?

mvanhorn (a GitHub user) maintains it in mvanhorn/printing-press-library, which has 2,056 GitHub stars. The repository holds 506 skills in this directory. The repository was last updated on October 9, 2026.

Source: mvanhorn/printing-press-library on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.