MCP server

web3ctx

io.github.FarseenSh/web3ctx

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

Version-true web3 docs, ABIs and human-validated integration recipes over MCP.

Website Source

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

5

Token cost

About 519 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

25 Oct 2026, 20:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http web3ctx https://mcp.scarai.xyz/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.web3ctx]
url = "https://mcp.scarai.xyz/mcp"

Gemini CLI

{"mcpServers":{"web3ctx":{"httpUrl":"https://mcp.scarai.xyz/mcp"}}}

Cursor

{"mcpServers":{"web3ctx":{"url":"https://mcp.scarai.xyz/mcp"}}}

VS Code

{"servers":{"web3ctx":{"type":"http","url":"https://mcp.scarai.xyz/mcp"}}}

Antigravity

agy mcp add web3ctx https://mcp.scarai.xyz/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"web3ctx","server_url":"https://mcp.scarai.xyz/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"web3ctx","server_url":"https://mcp.scarai.xyz/mcp"}

Tools

• web3_deps ~99 tokens
  Dependency closure around a selector. Does not follow calls across projects.
• web3_fetch ~90 tokens
  Full bodies for selectors you already chose, or the next page of a cursor. Does not discover selectors.
• web3_grep ~98 tokens
  Exact lexical match on a known identifier. Does not rank semantically.
• web3_lookup ~107 tokens
  Typed records by id: address, ABI, EIP. Does not search prose or rank.
• web3_search ~125 tokens
  Ranked selectors for a prose query or unknown identifier. Does not return bodies.

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