TrueForge
Open-source agent harness runtime that turns an LLM into a working agent.
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About TrueForge
TrueForge is listed in our frameworks category and is aimed at builders. Open-source agent harness runtime that turns an LLM into a working agent. Pricing, as the maker states it: Open source. Maturity: Mature. We last checked the official link on 2026-10-16.
What is TrueForge?
TrueForge, from TrueFoundry, is an open-source agent harness: the runtime layer that turns an LLM into a working agent. It runs the execution loop, including model calls, MCP tools, skills, sandboxing, approvals, context management and session state.
It exposes the agent three ways: a chat UI, an HTTP API with a TypeScript SDK, and an embeddable UI SDK.
Sources: the official README and our directory listing, checked 2026-10-18. Official site: trueforge.dev/introduction.
Who is TrueForge for?
Developers who want streaming, persistence, tool servers, sandboxing and approvals without building the runtime themselves.
TrueForge at a glance
- Open source: Yes (MIT License)
- GitHub: truefoundry/trueforge · 6,325 stars (as of Oct 21, 2026)
Key features
- Managed agent loop with MCP tools and skills
- Sandboxing and approvals
- Chat UI, HTTP API and TypeScript SDK
- Embeddable UI SDK
TrueForge FAQ
What is TrueForge?
TrueForge, from TrueFoundry, is an open-source agent harness: the runtime layer that turns an LLM into a working agent. It runs the execution loop, including model calls, MCP tools, skills, sandboxing, approvals, context management and session state.
Who is TrueForge for?
Developers who want streaming, persistence, tool servers, sandboxing and approvals without building the runtime themselves.
Is TrueForge free?
TrueForge's pricing, as the maker states it: Open source. Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
Is TrueForge open source?
Yes. TrueForge is released under the MIT License, according to its GitHub repository.
What are alternatives to TrueForge?
Similar tools include Hermes Agent (Nous Research), OpenHuman, Haystack, PrivateGPT, OpenEvolve and RubyLLM.
TrueForge ratings and reviews
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TrueForge alternatives
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Hermes Agent (Nous Research)
Open-source agent harness; v0.21.7 stable shipped Oct 12, v0.22.0 RCs Oct 13-14.
OpenHuman
Lightweight open-source agent harness designed to run many agents cheaply on small servers.
Haystack
Open-source orchestration framework for building production LLM apps, RAG and agents.
PrivateGPT
Open-source API layer that turns local models into private AI applications, with RAG, tools, skills, MCP and text-to-SQL on any OpenAI-compatible server.
OpenEvolve
Open-source take on AlphaEvolve that uses LLM agents to evolve better code and algorithms.
RubyLLM
Ruby framework for working with LLMs, including chat, tools and agents, through one API.
Related lists
🏆 Ranked in: Hermes Agent (Nous Research) alternatives · DeepSeek Harness alternatives
🔁 Listed in: Hermes Agent (Nous Research) alternatives · OpenHuman alternatives · DeepSeek Harness alternatives
💲 Estimate API cost: compare per-request and monthly costs for GPT, Claude, Gemini and Grok models.
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