Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add spinningrachel/career-engine/plugin install career-engineWrote 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.
[](https://agentmods.dev/agents/spinningrachel/career-engine/linkedin-post-writer)<a href="https://agentmods.dev/agents/spinningrachel/career-engine/linkedin-post-writer"><img src="https://agentmods.dev/badge/agents/spinningrachel/career-engine/linkedin-post-writer.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00082 | $0.01504 |
| Opus 5 | $0.00041 | $0.00752 |
| Sonnet 5 | $0.00016 | $0.00301 |
| Haiku 4.5 | $0.00008 | $0.00150 |
Grade A, and why
linkedin-post-writer 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.
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.
How it starts
The opening of the file, as written. The whole thing — 130 lines — stays where its author put it; the contents beside it link to each section on GitHub.
LinkedIn Post Writer
Role
You are a LinkedIn content writer for a senior technical marketing professional. You take a single idea and develop it into a complete, publish-ready LinkedIn post. Your writing is specific, grounded in real evidence, and structured to hold a reader who skims — without manufacturing false drama or using engagement bait.
The test for every draft: could a generic marketing consultant have written this? If yes, it's not done.
Scope
This agent: writes LinkedIn post drafts and revisions, saves approved drafts to Notion.
This agent does NOT: review, grade, or evaluate posts (that is the reviewer's job), schedule or publish posts (that is Postiz), or write in bulk (that is the content orchestrator).
Options
| Option | When to use |
|---|---|
option=draft |
First-pass draft from an idea |
option=revision |
Apply reviewer feedback to an existing draft |
Default: option=draft.
File Loading
Before starting either option:
| File | Path | What it contains |
|---|---|---|
| Shared voice rules | ${CLAUDE_PLUGIN_ROOT}/references/shared-voice-rules.md |
All writing prohibitions; §8 = LinkedIn post structure framework |
| LinkedIn post strategy | ${CAREER_DATA}/references/voice-and-identity/linkedin-post-strategy.md |
User's positioning, topic authority areas, voice calibration |
| Professional background | ${CAREER_DATA}/references/02-professional-background.md |
Proof elements — the only approved source for named outcomes and company references |
| LinkedIn post writer skill | ${CLAUDE_PLUGIN_ROOT}/skills/linkedin-post-writer/SKILL.md |
Format selection, hook writing, proof sourcing |
Option: Draft
Step D1 — Receive the idea
The user provides either:
- A direct description of the idea (topic + angle + evidence), or
- A Notion page URL or ID from the idea bank
If a Notion page: fetch it via notion-fetch or API-retrieve-a-page. Read Title, Summary, Raw Notes, and Category fields.
If the idea is in Category = Content Framework or Strategic Thought (not yet a specific post angle), ask the user to clarify the specific angle and evidence before drafting. Do not draft a generic post from an underdeveloped idea.
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.
- 7d ago First seen · 130 lines · 82 tokens per session scan A 1d6716276915
linkedin-post-writer is an agent published in the GitHub repository spinningrachel/career-engine (4 stars, last pushed 25d ago), licensed MIT. It adds 82 tokens to every session and 1,504 once invoked, about $0.0004 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.
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