Smeltr Token-2022

io.github.Space-RavenPublished by GitHub account Space-Ravenv0.1.1Updated Oct 24, 2026

Validate Token-2022 configs (transfer fee, soulbound, delegate). Read-only — no keys or RPC.

The publisher's own server: Catalunya 2022

VerifiedSTDIODesktop onlyFinanceDeveloper Tools

Overview

AI-generated overview

Local MCP server that lets an assistant list, describe and validate Solana Token-2022 token configurations and estimate deployment costs.

What you can do
  • List supported Token-2022 modules (transfer fee, non-transferable, permanent delegate) with high-impact flags
  • Describe a module's parameters, ranges, authority fields and security notes
  • Validate a token configuration against the real compatibility engine and schema checks, for Token-2022 or Classic SPL
  • Estimate platform fee and rent cost for a configuration
When to use it
Useful when drafting or reviewing Solana token configurations and you want the assistant to check extension compatibility and cost before deploying, without touching keys or the chain.
Requirements
Runs as a local process via npx from the npm package @smeltr/mcp-server, so Node.js and network access for the package download are needed. No accounts, API keys, environment variables or headers are declared.
Before you install
Read-only by design: it declares no keys, no RPC and no on-chain actions, so it cannot deploy or sign anything. Cost figures are estimates for the Smeltr platform fee and rent, not a quote, and validation results should be confirmed before any real deployment.

Installation

In SourceWeft

  1. Open Smeltr Token-2022 in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

@smeltr/mcp-server

Model Context Protocol server for Solana Token-2022 token configuration. Exposes Smeltr's real validation engine to AI assistants — same logic as smeltr.org/deploy.

Read-only. No private keys, no RPC, no on-chain actions.

Documentation: https://smeltr.org/docs/mcp

Install

bash
npx -y @smeltr/mcp-server

Tools

ToolPurpose
list_modulesSupported modules (Transfer Fee, Non-Transferable, Permanent Delegate) with high-impact flags
describe_moduleParameters, ranges, authority fields, security notes
validate_configReal compatibility engine + Zod schema validation. Optional tokenStandard: "token-2022" (default) or "spl-legacy" for Classic SPL mint-only validation
estimate_costPlatform fee (0.03 SOL) + rent estimate. Pass tokenStandard: "spl-legacy" for Classic SPL (no extension rent bump)

Claude Desktop

Add to claude_desktop_config.json:

json
{  "mcpServers": {    "smeltr-token2022": {      "command": "npx",      "args": ["-y", "@smeltr/mcp-server"]    }  }}

Cursor

Add to .cursor/mcp.json or Cursor Settings → MCP:

json
{  "mcpServers": {    "smeltr-token2022": {      "command": "npx",      "args": ["-y", "@smeltr/mcp-server"]    }  }}

From source (monorepo)

bash
git clone https://github.com/Space-Raven/Smeltr.gitcd Smeltrnpm ci --legacy-peer-depsnpx tsx packages/mcp-server/src/server.ts

Example prompt

Use Smeltr to validate a Token-2022 config with 250 basis-point transfer fee and check compatibility with non-transferable.

Classic SPL (no extension modules):

Use Smeltr with tokenStandard: "spl-legacy" to validate a Classic SPL mint config.

Tests

From the repo root:

bash
npm run test:mcpnpm run test:a3:unit

License

MIT — Smeltr Technologies LLC

Source: packages/mcp-server/README.md at commit f04c3c3

Tools

0
SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

1
  1. v0.1.1LatestSep 16, 2026

Score

40% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 days25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declared10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

    Declare a license in the repository or the registry entry.

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