Linc

Legal AI terminal agent powered by case.dev

Linc is a terminal-native AI agent for legal workflows. One install, one API key, access to 195+ language models and the full case.dev platform via natural language.

Install

npm install -g @casemark/linc

Or run directly:

npx @casemark/linc

Setup

export CASEDEV_API_KEY="your-api-key"
linc

Get your API key at case.dev.

What Can It Do?

Linc gives you a terminal AI agent with:

• 195+ LLM models — Claude, GPT, Gemini, and more via case.dev's unified API
• File operations — read, edit, write, grep, find across your codebase
• Shell access — run commands, scripts, and pipelines
• Legal workflows — via the casedev CLI: vault management, OCR, transcription, legal research, semantic search
• Session management — persist, resume, branch, and compact conversations
• Extensions — extend with TypeScript plugins, custom tools, themes, skills, and prompt templates

Usage

# Interactive mode (TUI)
linc

# Single-shot mode
linc -p "summarize this contract" @contract.pdf

# Continue previous session
linc -c

# Resume a specific session
linc -r

# Use a specific model
linc --model anthropic/claude-opus-4-6-20250725

# Pipe input
cat document.txt | linc -p "extract key terms"

Architecture

• LLM provider: case.dev /llm/v1 — OpenAI-compatible, 195+ models
• Auth: Single CASEDEV_API_KEY — works for both the LLM endpoint and casedev CLI tools
• Tools: bash + casedev CLI (vault, OCR, voice, legal research, search)
• Config: ~/.linc/agent/ — settings, sessions, themes, extensions

Extensions

Extend linc with TypeScript:

import { defineExtension } from "@casemark/linc/hooks";

export default defineExtension({
  name: "my-extension",
  setup(hooks) {
    hooks.on("toolCall", async (event) => {
      // Custom tool handling
    });
  },
});

See docs/extensions.md for the full API.

Environment Variables

| Variable | Description | |----------|-------------| | CASEDEV_API_KEY | API key for case.dev (required) | | LINC_CODING_AGENT_DIR | Override config directory (default: ~/.linc/agent) | | LINC_OFFLINE | Disable network operations at startup | | LINC_PACKAGE_DIR | Override package directory (for Nix/Guix) |

License

MIT — forked from pi-mono (MIT)