What is antwork-poster?

A guide for drafting, scheduling, and publishing social-media posts through Antwork, a social-media scheduling service. It checks the target account, gathers its brand voice and recent posts, and supports one platform or several.

Use it to prepare posts, adapt them to each platform, schedule or publish them, and check account health and workspace settings first.

It prevents common posting mistakes such as using the wrong account, ignoring platform limits, repeating recent wording, or trying to publish with an expired connection.

antwork-poster — Skill for Claude Code by iker-gonzalez

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 iker-gonzalez/antwork-skills --skill antwork-poster

Clone the repo

git clone --depth 1 https://github.com/iker-gonzalez/antwork-skills

Made for: Claude Code.

Or install antwork-skills, the plugin that ships this one along with the rest of its 12 skills, 5 agents, 2 MCP servers.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/iker-gonzalez/antwork-skills/antwork-poster/github.svg)](https://agentmods.dev/skills/iker-gonzalez/antwork-skills/antwork-poster)

Your own site

<a href="https://agentmods.dev/skills/iker-gonzalez/antwork-skills/antwork-poster"><img src="https://agentmods.dev/badge/skills/iker-gonzalez/antwork-skills/antwork-poster/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/iker-gonzalez/antwork-skills/antwork-poster"><img src="https://agentmods.dev/badge/skills/iker-gonzalez/antwork-skills/antwork-poster.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 97 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,273 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.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00097	$0.01273
Opus 5	$0.00048	$0.00636
Sonnet 5	$0.00019	$0.00255
Haiku 4.5	$0.00010	$0.00127

Measured 12d ago against content hash 029e16d63288, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

antwork-poster 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 12d 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.

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/antwork-poster/SKILL.md · 70 lines

How it starts

The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Posting through Antwork

Antwork is an MCP-native social-media scheduler. This skill codifies the mistakes most assistants make against the server — get the tool sequence right and the post ships correctly the first time.

1. Resolve the workspace and account first

workspace_id is optional on every tool. It auto-resolves when the user has one workspace. If they have several and no default, call set_default_workspace (or pass workspace_id) before anything else.
create_post targets one account via account_id. Call list_social_accounts to get the target account's id and check its tokenHealthStatus. If the account is expired / needs_reconnection, stop and surface its reauthUrl — a post against a dead account will fail at publish time.

2. Pull context before drafting — never write cold

Call get_post_context(platform, account_id) before writing any copy. It returns:

Brand identity — workspace name, website, logo, brandVersion.
Voice profile for that account — tone, style, emoji/hashtag policy, CTA patterns, example phrases.
Recent posts (the last 3) so you don't repeat yourself.
voiceStale — if true (no profile, or older than 30 days), recommend a quick antwork-voice pass first, or ask the user once for tone ("formal, founder-mode, casual?") rather than guessing.

The voice profile and brand are the ground truth. Match them — pronouns ("I/my" for solo founders, "we/our" for teams), tone, and the account's recurring vocabulary.

3. The platform model: one account per post

There is no platforms or platform_texts argument. create_post writes to a single account_id, and the platform is derived from that account.

Single platform: one create_post.
Multiple platforms: one create_post per account, each with copy reshaped for that platform, all sharing the same campaign_id so they stay grouped. Don't reuse one body across platforms — X's 280-char cap mangles LinkedIn copy, and LinkedIn-length paragraphs look broken on Threads. Call get_post_context for each platform so each variant matches that account's voice.

Read the full file on GitHub · 70 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.

12d ago First seen · 70 lines · 97 tokens per session scan A 029e16d63288

Subscribe to this mod's changes

antwork-poster is a skill published in the GitHub repository iker-gonzalez/antwork-skills (0 stars, last pushed 2mo ago), licensed MIT. It adds 97 tokens to every session and 1,273 once invoked, about $0.0005 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 2026-08-31.

Claude Code Marketing and SEO ai-agents antwork claude-skills mcp mcp-server

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