Smart Meta-Facilitator for x402 payments on Base: route, verify, and settle payments.
If you already use Nexflow, the nexflow mcp server is the piece that lets your assistant work with it directly. Smart Meta-Facilitator for x402 payments on Base: route, verify, and settle payments.
NexFlow SMF routes, verifies, and settles x402 micropayments on Base. It acts as an intelligent intermediary between payers and facilitators, selecting the optimal route based on cost, latency, and reliability. This repository contains the on-chain settlement contracts, TypeScript SDK, agent manifest specification, and integration examples.
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.
Configuration is passed through the environment: NEXFLOW_SMF_BASE_URL, WORKFLOW_ID, NEXFLOW_API_KEY, NEXFLOW_BASE_URL, NEXFLOW_FACILITATOR_URL. 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.
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. It is maintained by moejeaux; worth a glance at recent repository activity before you build anything load-bearing on it.
This entry was verified against Nexflow's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.
{
"mcpServers": {
"nexflow-smf": {
"command": "npx",
"args": ["-y", "tsx"],
"env": {
"NEXFLOW_SMF_BASE_URL": "your-value",
"WORKFLOW_ID": "your-value",
"NEXFLOW_API_KEY": "your-value",
"NEXFLOW_BASE_URL": "your-value",
"NEXFLOW_FACILITATOR_URL": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| NEXFLOW_SMF_BASE_URL | Endpoint or connection string the server talks to. | Yes |
| WORKFLOW_ID | Configuration value read at startup. | Optional |
| NEXFLOW_API_KEY | Credential the server authenticates with. | Yes |
| NEXFLOW_BASE_URL | Endpoint or connection string the server talks to. | Yes |
| NEXFLOW_FACILITATOR_URL | Endpoint or connection string the server talks to. | Yes |
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