AI Plugin Index
Gcf
Verified · npm:@blackwell-systemsMCP server by blackwell-systems · updated · ★ 4 · 5.4k downloads a week
The AI-native wire format for structured data. 50-92% fewer tokens than JSON, with multi-turn delta encoding for agent loops. 100% comprehension on every frontier model. Zero dependencies. Gcf is published by npm:@blackwell-systems from its verified domain in the official MCP Registry.
Last commit 18 days ago
MIT: permissive, fine for commercial use
Clear description, published package or server URL, original repository
No risky patterns in the files we checked
Install Gcf
Built from the published package, never by AIclaude mcp add gcf -- npx -y @blackwell-systems/gcfRun in your terminal. Add --scope user to use it in every project.
{
"mcpServers": {
"gcf": {
"command": "npx",
"args": [
"-y",
"@blackwell-systems/gcf"
]
}
}
}Settings, Developer, Edit config. Paste into claude_desktop_config.json and restart.
{
"mcpServers": {
"gcf": {
"command": "npx",
"args": [
"-y",
"@blackwell-systems/gcf"
]
}
}
}Add to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project).
{
"servers": {
"gcf": {
"command": "npx",
"args": [
"-y",
"@blackwell-systems/gcf"
]
}
}
}Add to .vscode/mcp.json. VS Code uses "servers", not "mcpServers".
codex mcp add gcf -- npx -y @blackwell-systems/gcf{
"mcpServers": {
"gcf": {
"command": "npx",
"args": [
"-y",
"@blackwell-systems/gcf"
]
}
}
}Add to ~/.gemini/config/mcp_config.json (all projects) or .agents/mcp_config.json (this project).
gemini mcp add gcf npx -y @blackwell-systems/gcfGemini CLI was replaced by Antigravity CLI in June 2026 and remains only for enterprise licences and paid API keys.
MCP servers run with your permissions and can read what you give them access to. Some need an API key: check the README and add it under env in the gcf block.
Security check
ANo download-and-run commands, hidden instructions or signs of sending keys out were found.
Checked automatically: README.md, package.json. This looks for known risky patterns and is not a full audit. How grades work
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Gcf: common questions
How do I install Gcf?
In Claude Code run claude mcp add gcf -- npx -y @blackwell-systems/gcf. For Claude Desktop, Cursor and VS Code, paste the config shown above and restart. See the install guides.
Is Gcf the official server?
Gcf is published by npm:@blackwell-systems from its verified domain in the official MCP Registry.
Is Gcf free?
The code is published under the MIT licence. The service it connects to may have its own pricing.
Is Gcf safe to use?
It scores 87 of 100. Grades: maintenance A, licence A, quality C. Security check: grade A, no risky patterns found in the files checked. Review the code before you install. How grades work.
What are alternatives to Gcf?
Similar MCP servers: Harness, MCP Registry Server, ref-tools-ref-tools-mcp, Microsoft Learn MCP.
Does Gcf work with ChatGPT?
Not directly. It runs locally, and ChatGPT only connects to remote servers with a URL. Use it in Claude Code, Claude Desktop, Cursor, VS Code or Codex.