BYOAIK — Bring Your Own AI Key: a directory of AI tools that run on your own API key.

LangChain

The most widely used open-source LLM app and agent framework; every chat model integration takes your own API key.

Website Source code

Category:
Agent Frameworks
Pricing:
Open Source
Open source:
Yes (MIT)
Self-hostable:
No
Local-first:
No
Platforms:
Library/SDK, Self-hosted
AI providers (bring your own key):
OpenAI, Anthropic, Google Gemini, OpenRouter, Ollama, Custom / OpenAI-compatible, AWS Bedrock, Azure OpenAI, Mistral, Cohere, Groq, DeepSeek
API key storage:
Configured by environment variable
Key risk level:
LOW
Trust score:
77/100

LangChain provides the building blocks (chains, agents, tools, memory) for building coding assistants, RAG systems and autonomous agents on top of any LLM. To use Claude, for example, the user sets the ANTHROPIC_API_KEY environment variable or passes api_key directly to ChatAnthropic, and the same pattern applies for OpenAI, Gemini, Bedrock and dozens of other integrations. MIT licensed and the most-starred project in this space, with same-day commit activity.

Why this trust score (77/100)

Trust measures how the tool treats your API key and how much of that has been verified. It contains no popularity signal.

  • Key Safety 22/25 — The key is supplied by an environment variable or local config file you control.
  • Request Routing 17/20 — Requests go straight from you to the AI provider.
  • Transparency 20/20 — Source is public under MIT, so anyone can check how the key is handled.
  • Privacy 7/15 — Nothing specific is known about its data handling beyond the key itself.
  • Maintenance 10/10 — Actively developed — commits within the last three months.
  • Verification Confidence 1/10 — Compiled from public documentation by an AI-assisted pass, not independently confirmed.

What was checked

Verification tier: RESEARCH_ASSISTED — derived from the evidence below, not set by hand.

  • [REPORTED · RESEARCH] This listing was compiled by an AI-assisted research pass over the tool's public website, README and documentation. No person independently confirmed it.
  • [CONFIRMED · SOURCE_SCAN] Most recent commit 2026-08-10 — about 0 month(s) ago. source

How your API key is handled

Your API key is supplied via an environment variable or local config file. Requests are sent directly to the AI provider.

Setup

Install the tool, set your provider API key as an environment variable (or in its config file), and pick a model.