Claude prompts, assistants & agents — tested on Anthropic models.
The Sigrix marketplace for Claude: prompts, personas, assistants, and agents built and tested on Anthropic's Claude models. Compare by the job they do, the model they were tested on, and price — then drop them into Claude or the API.
AI crews for Claude
crew
Free
CareerForge — Resume & Job Search Agent
A full-service career agent that audits resumes, rewrites bullet points and summaries for ATS optimization, generates role-targeted cover letters, preps users for interviews with mock Q&A, builds job search strategies, and optimizes LinkedIn profiles — all calibrated to the user's target role and experience level.
crew
Free
Career Pivot Strategist
An end-to-end career transition agent that analyzes your background, identifies high-leverage pivot paths, and builds a personalized action plan — from skill repackaging to target role shortlisting to interview repositioning.
Prompts for Claude
prompt
Free
Brutal Truth Generator
Get raw, unfiltered truths that challenge beliefs and spark strong reactions.
prompt
Free
ClickLift AI
A YouTube packaging strategist that engineers title-and-thumbnail combos to lift click-through rate without burning audience trust — built for creators whose good videos keep getting buried.
Personas for Claude
persona
Free
ElectionPrep AI
A non-partisan voter research assistant that breaks down every candidate on your ballot — positions, voting records, funding sources, and key quotes — so you vote informed, not influenced.
persona
Free
InterviewAce AI
An expert interview strategist that prepares you for any job interview with tailored questions, winning answer frameworks, and real-time mock practice — so you walk in confident and walk out hired.
persona
Free
BoundaryScript AI
A communication strategist that gives people the exact words to say in hard conversations — setting limits, declining requests, addressing conflict, and protecting their time without guilt or aggression.
persona
Free
NegotiateIQ AI
A salary and offer negotiation strategist that gives professionals the exact scripts, counter-offer frameworks, and confidence tactics to stop leaving money on the table.
persona
Free
CareerForge AI
An expert resume strategist and job search coach that transforms your experience into interview-winning documents and personalized job search game plans.
persona
Free
ColdPitch AI
A cold email strategist that writes reply-worthy outreach for founders, sales reps, and freelancers who are tired of getting ignored.
persona
Free
WarRoom AI
A military subject matter expert that breaks down defense strategy, military operations, force structure, geopolitics, and modern warfare concepts — giving analysts, students, veterans, and curious civilians clear, structured, expert-level briefings without the jargon wall.
persona
Free
NewsletterForge AI
A newsletter growth and writing coach that helps creators, solopreneurs, and experts launch and scale email newsletters readers actually open.
Build for Claude
Made something great for Claude? Publish it.
Package your prompt, persona, assistant, or agent and list it free or paid — buyers get instant access and you keep the credit. Tag it for Claude and it shows up right here.
About Claude on Sigrix
Buying Claude tools on Sigrix
Claude is Anthropic's family of AI models, known for long context and careful reasoning. Anything on Sigrix tagged for Claude is built to drop into it — a prompt you paste in, a persona or assistant you configure, or an agent you run against the Anthropic API.
Every Claude listing ships as an editable module you own — adapt the instructions to your workflow and reuse it, rather than re-prompting from scratch each time.
Compare Claude tools by the job they do, the Claude model they were tested on, their token footprint, and price before you buy.
People searching for Claude prompts and tools usually want something tested and reusable that plays to Claude's strengths — long context and careful reasoning. Popular searches: claude prompts, buy claude prompts, claude prompt marketplace, anthropic claude tools, claude ai agents. Related: anthropic, claude 3.5 sonnet, ai prompts, ai agents, prompt marketplace.
Best for
- Long-document analysis, summarisation, and drafting
- Coding assistants and agentic workflows
- Personas and assistants with a consistent, careful voice
- Automations that call the Anthropic API
Browse by type
Related guides
Frequently asked questions
More guides in Sigrix Learn, or read the full buyer & seller FAQ.
Prompts you paste into Claude, personas and assistants you configure for a consistent voice, and agents that run multi-step tasks against the Anthropic API — all built and tested on Claude models by independent creators.
Each listing shows the Claude model it was tested on (for example Claude 3.5 Sonnet). Prompts and personas are largely model-portable; the tested model tells you where the creator verified the result.
You own an editable copy of anything you claim on Sigrix, but running it still needs your own Claude access or Anthropic API key. Free listings cost nothing to claim; paid ones show their price on the card.
Usually yes — a prompt is plain text, so it works with any capable model. The listing's tested model is where the creator verified it; results on a different model may vary slightly.