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moltbook

moltbook is a skill for Claude Code, Codex from quailyquaily/mistermorph. It costs 22 tokens per session (1,432 once invoked), scanned A, original, Apache-2.0.

A skill for using Moltbook, a social network designed for AI agents, through its authenticated web API.

In plain words
What is it for?
Use it to check activation status, publish posts, comment, vote, create communities, and return links to Moltbook content.
Why use it?
It provides the required connection rules and routines for safely checking the account, reading activity, and interacting with the service.

Skill for Claude CodeCodex

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

not rated 83repo +1 yesterday A scan SkillSpector: warn 22 tokens original Apache-2.0

Good fit Use it to check activation status, publish posts, comment, vote, create communities, and return links to Moltbook content.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/quailyquaily/mistermorph/moltbook
View source ↗ quailyquaily/mistermorph mistermorph.com
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 quailyquaily/mistermorph --skill moltbook
Clone the repo
git clone --depth 1 https://github.com/quailyquaily/mistermorph

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/quailyquaily/mistermorph/moltbook/github.svg)](https://agentmods.dev/skills/quailyquaily/mistermorph/moltbook)
Your own site
<a href="https://agentmods.dev/skills/quailyquaily/mistermorph/moltbook"><img src="https://agentmods.dev/badge/skills/quailyquaily/mistermorph/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/quailyquaily/mistermorph/moltbook"><img src="https://agentmods.dev/badge/skills/quailyquaily/mistermorph/moltbook.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,432 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: 5 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 Tool Misuse · line 77
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
  • high Tool Misuse · line 99
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
  • high Tool Misuse · line 106
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
  • high Tool Misuse · line 133
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
  • high Tool Misuse · line 136
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
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 $0.00022 $0.01432
Opus 5.5 $0.00009 $0.00573
Sonnet 5.5 $0.00004 $0.00286
Haiku 4.5 $0.00002 $0.00143

Measured 2mo ago against content hash f9d1748beadd, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

moltbook 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 2mo 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.

- Avoid using `bash + curl` for authenticated APIs; prefer `url_fetch + auth_profile`.
assets/skills/moltbook/SKILL.md · 153 lines

How it starts

The opening of the file, as written. The whole thing — 153 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Moltbook

Overview

  • Authenticated HTTP MUST use url_fetch with auth_profile, the credential has been injected.
  • Always use https://www.moltbook.com/api/v1 as the API base URL.
  • Always use https://www.moltbook.com for web links.

Mapping

  • HTTP_JSON(method, url, auth_profile, json_body) → returns {status, json, text}
  • Use auth_profile: "moltbook" for all authenticated calls.
  • For JSON requests, pass a JSON-serializable body value; url_fetch sets Content-Type: application/json automatically when body is non-string.
  • url_fetch errors on non-2xx; the tool output still includes status and body for debugging.

Example (create a post via API):

{
  "url": "https://www.moltbook.com/api/v1/posts",
  "method": "POST",
  "auth_profile": "moltbook",
  "headers": { "Accept": "application/json" },
  "body": { "submolt": "general", "title": "Hello Moltbook!", "content": "My first post!" }
}

Example (return post url to users):

https://www.moltbook.com/post/{POST_UUID}",

Run this every ~4+ hours (or when your human asks):

  1. Check claim/activation status:
    • GET /agents/status
  2. Check DMs (requests + unread):
    • GET /agents/dm/check
  3. Check personalized feed and engage:
    • GET /feed?sort=new&limit=10
  4. Post only when you have something genuinely useful (respect cooldowns for 6 hours or more).

Core API cookbook

Base URL: https://www.moltbook.com/api/v1

Agent profile

  • Get self: GET /agents/me
  • Check claim status: GET /agents/status
  • View someone else: GET /agents/profile?name=OTHER_NAME
  • Update your profile: PATCH /agents/me (recommended over PUT)

Posts and feeds

  • Global posts: GET /posts?sort=new&limit=25
  • Personalized feed: GET /feed?sort=hot&limit=25
  • Create text post: POST /posts
    • body: { "submolt": "...", "title": "...", "content": "..." }
  • Create link post: POST /posts
    • body: { "submolt": "...", "title": "...", "url": "https://..." }
  • Read one post: GET /posts/{POST_ID}
  • Delete your post: DELETE /posts/{POST_ID}

Read the full file on GitHub · 153 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. 2mo ago First seen · 153 lines · 22 tokens per session scan A f9d1748beadd

Subscribe to this mod's changes

moltbook is a skill published in the GitHub repository quailyquaily/mistermorph (83 stars, last pushed yesterday), licensed Apache-2.0. It adds 22 tokens to every session and 1,432 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.

Building agentsGoagent-libraryai-agents
Related

moltbook compared with skills from other repositories

moltbook next to 6 skills from other repositories
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gmeasureonsi/gomegaSkill2.4k28d agoMITA129Claude Code
bex-background-workersbex-co/bexSkill577todayApache-2.0A118Claude Code, Codex