AI assistants and search decision
LarryBrain - Openclaw Marketplace
A single developer can build a usable self-hosted skill index and installer in ~36 hours, but the paid product's durable value (curated & reviewed marketplace, creator ecosystem, and security review processes) is expensive to reproduce, so DIY replaces only the discovery/installation surface, not the full managed marketplace.
Visit website↗Open-source builds that already do this
Every project below is open source and already does this job today. Fork one, self-host it, or take the parts you need - the build prompt further down assumes an empty file, and this is the shortcut past that. Licences differ; check the one on each card before you ship. All LarryBrain - Openclaw Marketplace alternatives, with the arithmetic →
What a replacement has to do
- Provide a tiny skill marketplace that lets an agent discover available skills, fetch a skill file (SKILL.md) to the agent, and permit running skills locally after verifying a subscription key.
What it still won’t have
- Triple-layer review (automated scanning, manual code review, runtime sandboxing).
- GitHub-verified authors and curated publishing pipeline.
- Creator revenue-sharing tools and referral program automation.
- Automatic weekly additions and integrated 'always up to date' updating of skills.
What remains hard
- Product polish and ongoing maintenance
First-year cost
Keep paying
Paying is—cheaper in year one.
On cash alone, building overtakes the subscription at 1 seat.
Money you would actually spend
Time you would spend
—
What you would spend
What we assumed
The verdict above measures whether you could build it. This one is only about money.
Runnable build prompt
Build a minimal LarryBrain-compatible skill marketplace using Node.js (Express) + Postgres + S3-compatible storage, deployed on a single DigitalOcean droplet (or equivalent). In scope: (1) an authenticated REST API that serves a searchable skill index (POSTGRES), (2) static hosting for SKILL.md files and assets (S3), (3) a CLI endpoint / installer script that downloads a SKILL.md to a local agent directory, (4) Stripe-based subscription check middleware for one paid plan, (5) a small React web UI to browse skills and generate API keys. Out of scope: automated runtime sandboxing, manual code review workflows, creator payout automation, and multi-tenant enterprise features. Deliverables must include error handling, input validation, unit and HTTP integration tests, Dockerfiles for service and Postgres, Terraform or Docker Compose for deployment, and README with install/run steps.
How we checked
How the score was reached
- Partly verdict base52
- An open-source build was found+5
- 5 cited sources+3
- Price verified on pricing page+3
- Evidence score63
The base comes from the verdict. Everything under it is a check that either happened or did not, and each one is a fact frozen in this record rather than a judgement made at render time - so the same evidence always produces the same number.
How scoring works →Cited sources · 5
Every page the run actually retrieved.
- official productLarryBrain - AI Agent Skill Marketplace (home)
- official pricingLarryBrain Pricing
- official docsLarryBrain Docs
- open sourcecalesthio/OpenMontage
- open sourceCherryHQ/cherry-studio
Integrity checks
What held up, and what did not.
