Chainweb API MCP Server
by pact-community-organizationio.github.Pact-Community-Organization/chainwebv0.2.3
Chainweb HTTP API: local sim, pre-signed send, poll, table reads, SPV proofs, module deploys.
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Active6d ago
Install Chainweb API MCP server
Install in Claude Code
claude mcp add chainweb -e PACT_COMMUNITY_WORKSPACE_ROOT='<pact-community-workspace-root>' -e PACT_COMMUNITY_CHAINWEB_MODE='<pact-community-chainweb-mode>' -- npx -y @pact-community/mcp-chainwebInstall in Cursor
{
"mcpServers": {
"chainweb": {
"command": "npx",
"args": [
"-y",
"@pact-community/mcp-chainweb"
],
"env": {
"PACT_COMMUNITY_WORKSPACE_ROOT": "<pact-community-workspace-root>",
"PACT_COMMUNITY_CHAINWEB_MODE": "<pact-community-chainweb-mode>"
}
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).
Install in Claude Desktop
{
"mcpServers": {
"chainweb": {
"command": "npx",
"args": [
"-y",
"@pact-community/mcp-chainweb"
],
"env": {
"PACT_COMMUNITY_WORKSPACE_ROOT": "<pact-community-workspace-root>",
"PACT_COMMUNITY_CHAINWEB_MODE": "<pact-community-chainweb-mode>"
}
}
}
}Settings → Developer → Edit Config (claude_desktop_config.json), then restart.
Install in VS Code
{
"servers": {
"chainweb": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@pact-community/mcp-chainweb"
],
"env": {
"PACT_COMMUNITY_WORKSPACE_ROOT": "<pact-community-workspace-root>",
"PACT_COMMUNITY_CHAINWEB_MODE": "<pact-community-chainweb-mode>"
}
}
}
}Add to .vscode/mcp.json in your workspace.
Install in Windsurf
{
"mcpServers": {
"chainweb": {
"command": "npx",
"args": [
"-y",
"@pact-community/mcp-chainweb"
],
"env": {
"PACT_COMMUNITY_WORKSPACE_ROOT": "<pact-community-workspace-root>",
"PACT_COMMUNITY_CHAINWEB_MODE": "<pact-community-chainweb-mode>"
}
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
Configuration
| Variable | Required | Secret | Description |
|---|---|---|---|
| PACT_COMMUNITY_WORKSPACE_ROOT | yes | — | Workspace root directory; all file access is confined inside it. |
| PACT_COMMUNITY_CHAINWEB_MODE | yes | — | Network mode; must be set and match PACT_COMMUNITY_CHAINWEB_PROFILE (devnet, testnet06, or mainnet). |
| PACT_COMMUNITY_CHAINWEB_PROFILE | — | — | Network profile: devnet (default, read/write), testnet06, or mainnet (both read-only). |
| PACT_COMMUNITY_CHAINWEB_BASE_URL | — | — | Chainweb node base URL (default per profile). |
| PACT_COMMUNITY_CHAINWEB_NETWORK_ID | — | — | Network id, e.g. development, testnet06, mainnet01 (default per profile). |
Freshness
Active — last maintenance signal 6d ago. The newest of the signals below sets the band.
Last commit (default branch)
2026-10-03 · 6d ago · GitHub
Latest release
2026-07-28 · 2mo ago · GitHub · v0.3.0
Package published
no data · npm/PyPI
Registry entry updated
2026-07-03 · 3mo ago · official registry · v0.2.3
FAQ
›How do I install the Chainweb API MCP server in Claude Code?
Run: claude mcp add chainweb -e PACT_COMMUNITY_WORKSPACE_ROOT='<pact-community-workspace-root>' -e PACT_COMMUNITY_CHAINWEB_MODE='<pact-community-chainweb-mode>' -- npx -y @pact-community/mcp-chainweb. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does Chainweb API require an API key?
Yes. It expects PACT_COMMUNITY_WORKSPACE_ROOT, PACT_COMMUNITY_CHAINWEB_MODE.
›Can I use Chainweb API as a remote (hosted) MCP server?
No hosted endpoint is published; it runs locally over stdio.
›Is Chainweb API in the official MCP registry?
Yes, as io.github.Pact-Community-Organization/chainweb.