What is Legion?
Legion is an Elixir runtime for AI agents that live inside your application and get things done by writing code.
LLegion
Code workflows, especially add memory to ai agents and manage agent context
AI Finderz score8.3/10
PricingFree
Free planYes
SourceOpen source · MIT
GEO QUICK ANSWERS
Quick answers about Legion
Is Legion free and how much does it cost?
Legion has a free plan. Its pricing model is listed as Free. Pricing and usage limits can change, so verify the official pricing page before purchasing.
What is Legion best for?
Code workflows, especially add memory to ai agents and manage agent context
What are the best alternatives to Legion?
AI automations that don’t fail silently, Plango, ContextIQ.
OVERVIEW
Last checked: September 27, 2026What Legion is best for
Code workflows, especially add memory to ai agents and manage agent context
Legion is an Elixir runtime for AI agents that live inside your application and get things done by writing code. Open source, by Software Mansion. Verified public information highlights show HN: Legion – AI agents that write sandboxed Lua inside your Elixir app, legion is an Elixir runtime for AI agents that live inside your application and get things done by writing code, open source, by Software Mansion, an agent t. Verified public information highlights legion is an Elixir runtime for AI agents that live inside your application and get things done by writing code, open source, by Software Mansion, verified public information highlights show HN: Legion – AI agents that write sandboxed Lua inside your Elixir app, legion is an Elixir runtime for AI agents that live inside your application. In AI Finderz, the strongest matching use cases are add memory to ai agents, manage agent context, connect mcp tools, build ai agents. The project is publicly presented as open source under MIT. The public project is open source under MIT. Check the official page for hosted services, support or usage-specific costs. AI Finderz checked the public source on 2026-09-27 and uses the official page as the factual basis for this profile.
AI FINDERZ TAKE
Why consider Legion?
Legion is a strong candidate for add memory to ai agents. The official page was checked before publication and the listing is built from factual product signals rather than a generic category template.
Key features & workflows
✓Legion is an Elixir runtime for AI agents that live inside your application and get things done by writing code
✓Open source, by Software Mansion
✓Verified public information highlights show HN: Legion – AI agents that write sandboxed Lua inside your Elixir app
✓legion is an Elixir runtime for AI agents that live inside your application
✓get things done by writing code
✓by Software Mansion
Pros
- Legion is an Elixir runtime for AI agents that live inside your application and get things done by writing code
- Open source, by Software Mansion
- Verified public information highlights show HN: Legion – AI agents that write sandboxed Lua inside your Elixir app
- Open-source code is publicly available under MIT
Cons / things to check
- Pricing, usage limits and hosted-plan details can change after this check
- Open-source projects may require technical setup, testing and maintenance before production use
✓
Choose Legion when
Choose Legion when you need add memory to ai agents or manage agent context. Its verified public profile specifically highlights legion is an elixir runtime for ai agents that live inside your application and get things done by writing code.
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Consider an alternative when
Consider an alternative when you need a different deployment model, integration set, pricing structure or specialist workflow than the capabilities verified on the official page.
PRICING SNAPSHOT
Checked September 27, 2026Legion pricing
ModelFree
Free planAvailable
The public project is open source under MIT. Check the official page for hosted services, support or usage-specific costs.
Popular tasks
Use Legion for tasks such as:
RELATED AI PROMPTS
Explore all prompts →Prompts that work with Legion
EDITORIAL VERIFICATION
How we evaluated Legion
AI Finderz separates product facts from editorial judgment. This profile uses the official product website and public product information where available, then adds task fit, pricing context, strengths, limitations and alternatives from the AI Finderz catalog.
Manually checked September 27, 2026Review status
CodePrimary category
5 tasks · 6 featuresCoverage in this profile
Free · free plan availablePricing snapshot
Primary source: official product information ↗. Product capabilities and prices can change after our last check.
Read the AI Finderz editorial policy and review methodology →
How AI Finderz ranks this tool
The AI Finderz score is an editorial/catalog score based on task relevance, catalog priority, use-case coverage and manual curation. It is not a user-review rating. Pricing, limits and product features can change, so important purchase decisions should always be checked against the official website.
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