pebble-setup

pebble-setup is a skill for Claude Code, Codex from skyf0xx/Pebble. It costs 28 tokens per session (2,105 once invoked), scanned A, original, MIT.

A setup and usage guide for Pebble, a browser-based chat interface that connects to the Hermes agent API. Its single launcher serves the interface and forwards API requests to Hermes.

In plain words
What is it for?
Use it to start Pebble, connect it to Hermes, update its launcher or plugin, check health, and resolve chat connection problems.
Why use it?
It explains the prerequisite API server and the commands needed to install, update, launch, and diagnose the chat interface.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for hermes-agent. Also seen: built for hermes-agent.

Good fit Use it to start Pebble, connect it to Hermes, update its launcher or plugin, check health, and resolve chat connection problems.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/skyf0xx/pebble/pebble-setup
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.

Any agent
npx skills add skyf0xx/Pebble --skill pebble-setup
Clone the repo
git clone --depth 1 https://github.com/skyf0xx/Pebble

Made for: Claude Code, Codex.

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 pebble-setup

README.md
[![agentmods](https://agentmods.dev/badge/skills/skyf0xx/pebble/pebble-setup/github.svg)](https://agentmods.dev/skills/skyf0xx/pebble/pebble-setup)
Your own site
<a href="https://agentmods.dev/skills/skyf0xx/pebble/pebble-setup"><img src="https://agentmods.dev/badge/skills/skyf0xx/pebble/pebble-setup/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 pebble-setup

Your own site · 80×15
<a href="https://agentmods.dev/skills/skyf0xx/pebble/pebble-setup"><img src="https://agentmods.dev/badge/skills/skyf0xx/pebble/pebble-setup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,105 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 4 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Privilege Escalation · line 22
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 23
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 131
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • medium Rogue Agent · line 42
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
How audits are shown
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 $0.00028 $0.02105
Opus 5.5 $0.00011 $0.00842
Sonnet 5.5 $0.00006 $0.00421
Haiku 4.5 $0.00003 $0.00211

Measured 1mo ago against content hash f5fd6f5d0be7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

pebble-setup scanned grade A with 1 finding 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 1mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

> `curl http://localhost:8642/health` — it should return
hermes-plugin/skills/pebble-setup/SKILL.md · 164 lines

How it starts

The opening of the file, as written. The whole thing — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Pebble for Hermes Agents

Pebble is a static PWA chat interface that talks to your Hermes HTTP API. The Pebble launcher is a single self-contained binary: the web app and the Hermes plugin are embedded in it, so there's no clone, no npm, no Node. It serves the app and reverse-proxies /api/*, /v1/*, and /health to Hermes, so the browser never makes a cross-origin request.

Prerequisite: a running Hermes API server. Check with curl http://localhost:8642/health — it should return {"status": "ok", "platform": "hermes-agent"}. If it doesn't, enable the API server in ~/.hermes/.env and restart the gateway:

grep -q '^API_SERVER_ENABLED=' ~/.hermes/.env || echo "API_SERVER_ENABLED=true" >> ~/.hermes/.env
grep -q '^API_SERVER_KEY='     ~/.hermes/.env || echo "API_SERVER_KEY=$(openssl rand -hex 32)" >> ~/.hermes/.env
hermes gateway restart && sleep 3 && curl http://localhost:8642/health

(If chat turns fail even though /health is ok, the agent has no model/tools configured yet — run hermes setup --portal.)

Updating? Same steps — re-run step 1 (latest binary) then step 2 (relaunch reinstalls the plugin); hermes gateway restart if the plugin changed. No config migration. (The pebble:pebble-update skill is just a pointer back here.)

1. Download the binary into permanent storage (once) - ignore if already downloaded

Install it under ~/.hermes/bin/ — next to the agent it serves, and out of any ephemeral working directory so it survives across sessions. Skip if you already have it; re-run to update.

mkdir -p ~/.hermes/bin
# pick your platform: pebble-macos-arm64, -macos-x64, -linux-x64, -linux-arm64, -windows-x64.exe
curl -L https://github.com/skyf0xx/Pebble/releases/latest/download/pebble-macos-arm64 \
  -o ~/.hermes/bin/pebble && chmod +x ~/.hermes/bin/pebble

2. Start Pebble

lsof -ti:5173 | xargs kill -9 2>/dev/null; sleep 1   # free the port first
~/.hermes/bin/pebble

Read the full file on GitHub · 164 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. 1mo ago First seen · 164 lines · 28 tokens per session scan A f5fd6f5d0be7

Subscribe to this mod's changes

pebble-setup is a skill published in the GitHub repository skyf0xx/Pebble (22 stars, last pushed 2mo ago), licensed MIT. It adds 28 tokens to every session and 2,105 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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