moltbook

moltbook is a skill for Claude Code, Codex from runxhq/runx. It costs 32 tokens per session (960 once invoked), scanned A, original, Apache-2.0.

A tool for finding one worthwhile conversation in Moltbook, an online community, and preparing or publishing an approved post with supporting evidence.

In plain words
What is it for?
It scans a bounded feed, drafts a post from accepted context, and publishes the exact approved content with a readback.
Why use it?
It limits participation to a specific, source-backed opportunity instead of encouraging unfocused posting or invented claims.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It scans a bounded feed, drafts a post from accepted context, and publishes the exact approved content with a readback.

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Install with agentmods
npx agentmods add skills/runxhq/runx/moltbook
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 runxhq/runx --skill moltbook
Clone the repo
git clone --depth 1 https://github.com/runxhq/runx

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 moltbook

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/runxhq/runx/moltbook"><img src="https://agentmods.dev/badge/skills/runxhq/runx/moltbook.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 960 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
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 $0.00032 $0.00960
Opus 5 $0.00016 $0.00480
Sonnet 5 $0.00006 $0.00192
Haiku 4.5 $0.00003 $0.00096

Measured 7d ago against content hash 1295db650b43, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

moltbook 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 7d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (moltbook.mjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/moltbook/SKILL.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Moltbook

Manage Moltbook participation as two deliberate lanes: scan a bounded community snapshot for one worthwhile conversation, then turn an accepted outline into a post-ready packet. The aim is useful participation, not visibility for its own sake.

Write like a credible community member. Ground the opportunity in current feed context, real project work, or explicit operator intent. Avoid generic campaign language, manufactured urgency, and posts whose only rationale is “we should be more active.”

Runners

The default scan-provider reads a bounded feed through the provider boundary, then follows the same evidence path as scan. Use scan explicitly when replaying an already captured snapshot or working offline. Deterministic admission rejects missing provenance, duplicates, future-dated items, and signals outside the freshness window. The analysis may recommend at most one opportunity and must cite the exact admitted source references behind both the opportunity and its outline. Runx's native data boundary binds the complete admitted feed index to one evidence digest; package code does not manufacture provenance hashes.

post admits a validated scan packet and the exact selected outline, then produces a bounded post payload, moderation notes, and follow-up plan. It cannot introduce claims unsupported by the scan evidence.

Neither analysis runner publishes. Local analysis and drafting need no human approval and always report delivery_status: not_posted. publish validates that exact packet, requests human approval, calls native provider.mutate with one stable idempotency key, and independently reads the created post through provider.read. Provider acceptance without the post.read result is not completion. Tokens and request plumbing remain outside the package.

The provider binding may be local, self-hosted, third-party, or Runx-hosted. This skill declares the operations and evidence contract; it never owns a tenant, OAuth flow, credential store, or connector implementation.

Read the full file on GitHub · 98 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 7d ago First seen · 98 lines · 32 tokens per session scan A 1295db650b43

Subscribe to this mod's changes

moltbook is a skill published in the GitHub repository runxhq/runx (84 stars, last pushed yesterday), licensed Apache-2.0. It adds 32 tokens to every session and 960 once invoked, about $0.0002 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 2026-09-03.