Unified MCP server for OneSource — 30 tools for blockchain data, with x402 (USDC on Base) and MPP (Tempo) pay-per-call payment rails
Most developer tooling work still happens through a UI a human drives. 1s MCP MCP server moves it into the conversation instead. Unified MCP server for OneSource — 30 tools for blockchain data, with x402 (USDC on Base) and MPP (Tempo) pay-per-call payment rails.
Unified MCP server for OneSource — 30 tools for blockchain data and live chain queries in a single server.
The server publishes 3 tools. What each one is for:
Security — Never commit keys to source control. Use environment variables, a .env file (excluded from git), or a secrets managerRequired — Set one to access the blockchain API tools. Without any, only the no-auth Setup & Ops tools work. The API key takes priority when set alongside aGlama — Glama auto-syncs from the GitHub repo daily. No manual steps needed after a release — just make sure changes are pushed to develop (the defaultConfiguration is passed through the environment: ONESOURCE_API_KEY, X402_PRIVATE_KEY, MPP_PRIVATE_KEY, ONESOURCE_BASE_URL, X402_RPC_URL, MPP_RPC_URL, ONESOURCE_ANALYTICS_URL, ONESOURCE_ANALYTICS_KEY. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
Because this one is hosted, setup is mostly authentication — you point your client at the endpoint and approve access. Nothing runs on your machine, so there is no runtime to keep patched.
This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. 1s MCP's toolset — Security, Required, Glama — is a fair guide to whether it matches your workflow. It is maintained by blockparty-global; worth a glance at recent repository activity before you build anything load-bearing on it.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
| Tool | What it does |
|---|---|
| Security | Never commit keys to source control. Use environment variables, a .env file (excluded from git), or a secrets manager. |
| Required | Set one to access the blockchain API tools. Without any, only the no-auth Setup & Ops tools work. The API key takes priority when set alongside a wallet key. |
| Glama | Glama auto-syncs from the GitHub repo daily. No manual steps needed after a release — just make sure changes are pushed to develop (the default branch). The glama.json file in the repo root controls ownership. Manual re- |
#### Claude Desktop / Cursor
```json
{
"mcpServers": {
"onesource": {
"command": "npx",
"args": ["-y", "@one-source/mcp@latest"],
"env": {
"MPP_PRIVATE_KEY": "<key>"
}
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| ONESOURCE_API_KEY | Credential the server authenticates with. | Yes |
| X402_PRIVATE_KEY | Credential the server authenticates with. | Yes |
| MPP_PRIVATE_KEY | Credential the server authenticates with. | Yes |
| ONESOURCE_BASE_URL | Endpoint or connection string the server talks to. | Yes |
| X402_RPC_URL | Endpoint or connection string the server talks to. | Yes |
| MPP_RPC_URL | Endpoint or connection string the server talks to. | Yes |
| ONESOURCE_ANALYTICS_URL | Endpoint or connection string the server talks to. | Yes |
| ONESOURCE_ANALYTICS_KEY | Credential the server authenticates with. | Yes |
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