A production coding agent for local repositories. It runs a streaming model-and-tool loop in the terminal, with Plan/Work modes, risk-aware approval, automatic context compaction, and data under ~/.crystal.

cli crystal ai csharp dotnet ai-agents coding-assistant ai-agent coding-agents ai-coding coding-agent ai-harness csharp-ai-service ai-harnesses crystalcode

• Updated Nov 4, 2026
• C#

A Crystal Code external tool set that lets the agent read any file as bytes: bounded hex windows, ASCII/UTF-16LE string runs, sha256/sha512/sha1/md5 digests, literal byte search, and byte-by-byte comparison.

crystal ai csharp binaries binary-analysis binary-search agent-tool ai-tools ai-tool agent-tools ai-tooling agent-tooling crystalcode

• Updated Oct 17, 2026
• C#

Cross-session memory for Crystal Code agents. A .NET IHostTool set with model-chosen note content, host-owned data directories, opt-in project scope, and atomic, symlink-safe storage.

agent crystal ai agent-tool ai-tools ai-tool agent-tools agent-memory agent-tooling agent-memory-system crystalcode

• Updated Oct 22, 2026
• C#

Crystal Code plugin for controlling one already-running VirtualBox VM. Provides status and Guest Additions detecti on, display capture, text/key/pointer input (click, drag, scroll), and guest process execution — all scoped to a singl e VM UUID configured by the host, never chosen by the model.

agent crystal ai csharp virtualbox virtual-machine agents csharp-code ai-agents ai-tools ai-agent agent-computer-interface computer-use computer-use-agent computer-use-preview computer-use-agents csharp-ai-service agent-computer computer-use-windows crystalcode

• Updated Oct 22, 2026
• C#

Default provider and model definitions for Crystal Code.

crystal ai ai-agents ai-agent ai-provider ai-providers crystalcode

• Updated Nov 4, 2026
• Python

Crystal Code tool set that returns one exact part of one JSON or XML file — JSON Pointer or XML element path, bounded and paged — so large lock files and manifests never fill the context.

json crystal ai csharp xml agent-tool ai-tools ai-tool agent-tools ai-tooling agent-tooling crystalcode

• Updated Oct 17, 2026
• C#

A selection of tool extensions for Crystal Code that enhance its functionality.

crystal ai ai-agents agent-tool ai-tools ai-agent agent-tools ai-agent-tools ai-agent-tool ai-agent-tooling crystalcode

• Updated Oct 10, 2026
• Python

Crystal Code external tool set that gives the agent live web search and page fetch. Search via Parallel or Exa MCP, fetch any HTTP page as text, Markdown, or HTML, all with model-controlled response sizes.

agent crystal ai csharp agent-tool ai-tools agent-tools agent-web crystalcode

• Updated Nov 4, 2026
• C#

Crystal Code external tool set that applies OpenCode-style multi-file patches in the workspace with verify-then-apply semantics, fuzzy line matching, and a workspace fence.

agent crystal ai agent-tool ai-tools ai-tool agentic agent-tools ai-agent-tools ai-tooling ai-coding ai-agent-tool agent-tooling crystalcode

• Updated Oct 22, 2026
• C#