SCVD x402 Verifier

by keeper-scvdco.huggingface.keeper-scvd/scvd-x402-verifier

Five read-only x402 verification tools, as an MCP server.

  • Remote endpoint
  • 5 tools
  • MIT

Uptime

Checked  · every day

0%from 5 days of checks

Up without downtime on 0 of 4 days with data; down 4440 minutes in all, the longest 1440 minutes on 31 October.

  • No downtime
  • Degraded
  • Down over 5 minutes
  • No data
  • Not checked yet

How far each check got

  • Reached the address 100%
  • Completed the handshake 0.0%
  • Listed its tools 0.0%
Every day
DayResultChecksMedian
3 Nov (today)No verdict yet0–
2 NovDown 1440 minutes1of 1–
1 NovDown 1440 minutes1of 1–
31 OctDown 1440 minutes1of 1–
30 OctDown 120 minutes13–

A failure counts as down time only when a second check five minutes later fails too. How we check

Connect to the publisher's own endpoint

Add to ~/.config/goose/config.yaml:

extensions:
  "scvd-x402-verifier":
    type: streamable_http
    name: "scvd-x402-verifier"
    enabled: true
    uri: "https://keeper-scvd-scvd-x402-verifier.hf.space/gradio_api/mcp/sse"
    headers: {}
    env_keys: []
    envs: {}
    timeout: 300

This server's endpoint speaks only SSE, which this client's documentation does not list among its transports; use another client for it.

For agents: the install prompt

Every step above as one Markdown text, for an assistant installing it for you.

# Install the MCP server SCVD x402 Verifier (`co.huggingface.keeper-scvd/scvd-x402-verifier`)

Its page: https://plug.directory/servers/co.huggingface.keeper-scvd/scvd-x402-verifier

It runs on the publisher's servers; the client connects to its URL.

Use the section for the person's client.

## Claude Desktop

Paste into Settings › Connectors › Add custom connector:

```text
https://keeper-scvd-scvd-x402-verifier.hf.space/gradio_api/mcp/sse
```

## Claude Code

Run in a terminal:

```sh
claude mcp add --transport sse scvd-x402-verifier https://keeper-scvd-scvd-x402-verifier.hf.space/gradio_api/mcp/sse
```

## Cursor, Devin Desktop, LM Studio, Gemini CLI, oterm, ECA

Merge into the place for the person's client:

- Cursor: ~/.cursor/mcp.json
- Devin Desktop: ~/.config/devin/mcp_config.json
- LM Studio: mcp.json (Program › Install › Edit mcp.json)
- Gemini CLI: ~/.gemini/settings.json
- oterm: config.json in oterm's data folder (~/Library/Application Support/oterm on macOS, ~/.local/share/oterm on Linux, %APPDATA%\oterm on Windows)
- ECA: ~/.config/eca/config.json (global) or .eca/config.json in the project

```json
{
  "mcpServers": {
    "scvd-x402-verifier": {
      "url": "https://keeper-scvd-scvd-x402-verifier.hf.space/gradio_api/mcp/sse"
    }
  }
}
```

## VS Code

Merge into .vscode/mcp.json:

```json
{
  "servers": {
    "scvd-x402-verifier": {
      "type": "sse",
      "url": "https://keeper-scvd-scvd-x402-verifier.hf.space/gradio_api/mcp/sse"
    }
  }
}
```

## Zed

This server's endpoint speaks only SSE, which this client's documentation does not list among its transports; use another client for it.

## Cline, AnythingLLM, Augment Code

Merge into the place for the person's client:

- Cline: cline_mcp_settings.json (MCP Servers › Configure › Configure MCP Servers)
- AnythingLLM: anythingllm_mcp_servers.json in the AnythingLLM storage plugins directory
- Augment Code: Augment Settings Panel – MCP section – Import from JSON (VS Code extension)

```json
{
  "mcpServers": {
    "scvd-x402-verifier": {
      "type": "sse",
      "url": "https://keeper-scvd-scvd-x402-verifier.hf.space/gradio_api/mcp/sse"
    }
  }
}
```

## Continue

Merge into ~/.continue/config.yaml:

```yaml
mcpServers:
  - name: "scvd-x402-verifier"
    type: sse
    url: "https://keeper-scvd-scvd-x402-verifier.hf.space/gradio_api/mcp/sse"
```

## Goose

This server's endpoint speaks only SSE, which this client's documentation does not list among its transports; use another client for it.

## Codex

This server's endpoint speaks only SSE, which this client's documentation does not list among its transports; use another client for it.

## mcp-client-cli, TUUI, BoltAI, Bob Shell, Kiro, Kiro CLI

This server's endpoint speaks only SSE, which this client's documentation does not list among its transports; use another client for it.

## Agenvoy

This server's endpoint speaks only SSE, which this client's documentation does not list among its transports; use another client for it.

## Amp

Merge into ~/.config/amp/settings.json (user) or .amp/settings.json (workspace):

```json
{
  "amp.mcpServers": {
    "scvd-x402-verifier": {
      "url": "https://keeper-scvd-scvd-x402-verifier.hf.space/gradio_api/mcp/sse"
    }
  }
}
```

Then restart the client, or reload its MCP servers, and ask it to list the server's tools to confirm it started.

Tools 5

  • scvd_x402_verifier_get_defect_definition Read one named x402 defect class from the store's registered vocabulary. What a clear door asserts, what a buyer loses when the defect is present, whether it is detectable without paying. Leave the id empty to list every class.
  • scvd_x402_verifier_lookup_endpoint_readiness Look up what the signed weekly x402 readiness corpus holds about one host. Rounds probed of rounds since first sighting, the last signed verdict, the tier with its fraction, and the gaps counted against the store. Never a ranking.
  • scvd_x402_verifier_preflight_x402_endpoint Preflight an x402 endpoint before paying it. One unpaid probe answering whether the URL serves a well-formed x402 v2 challenge a stock client could sign: 402 status, parseable PAYMENT-REQUIRED header, offer terms present. Every check is named, and so is anything the probe could not tell.
  • scvd_x402_verifier_verify_scvd_artifact Verify a certificate, stamp or anchor id this store issued. Returns the exact signed bytes and the ed25519 key, so the check can be repeated offline. Free forever, whether or not anyone bought the thing.
  • scvd_x402_verifier_verify_x402_receipt Verify an x402 signed receipt or offer from any issuer. Structure, signature against the issuer's key, liveness. Pass the public key for a fully offline check; otherwise the issuer's did:web key is resolved.

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