Keyless hosted MCP: pre-signature x402 payment verdict (GO/HOLD/STOP) with a signed receipt.
Free account. Installing gives you the manifest plus copy-paste snippets.
See reviewsImported from the official MCP registry - entry
com.blackwalltier/blackwall-x402-guardrailv0.1.2. Ratings and installs below are from this marketplace.
Keyless hosted MCP: pre-signature x402 payment verdict (GO/HOLD/STOP) with a signed receipt.
streamable-http https://mcp.blackwalltier.comSource: https://github.com/bluetieroperations-create/blackwall-x402-mcp
Registry entry: com.blackwalltier/blackwall-x402-guardrail
Copy one of these into your project. Installing also returns the manifest and these snippets.
targets:
- https://api.opensmartroute.ai/api/v1/registry/mcp-com-blackwalltier-blackwall-x402-guardrail/manifest # or paste the manifest belowAn Open Capability Manifest: the router reads it to know what this does, what it costs and when to pick it.
{
"ocm": "1",
"id": "mcp-com-blackwalltier-blackwall-x402-guardrail",
"kind": "tool",
"name": "blackwall-x402-guardrail",
"description": "Keyless hosted MCP: pre-signature x402 payment verdict (GO/HOLD/STOP) with a signed receipt.",
"publisher": "bluetieroperations-create",
"version": "0.1.2",
"capabilities": {
"domains": [
"coding"
],
"tags": [
"mcp",
"mcp-server",
"mcp-registry"
],
"languages": [
"en"
],
"supports_tools": true
},
"quality_prior": 0.6,
"examples": [
"Keyless hosted MCP: pre-signature x402 payment verdict (GO/HOLD/STOP) with a signed receipt."
],
"primary": false,
"metadata": {
"source": {
"provider": "mcp-registry",
"repository": "https://github.com/bluetieroperations-create/blackwall-x402-mcp",
"path": "server.json",
"ref": "0.1.2",
"url": "https://github.com/bluetieroperations-create/blackwall-x402-mcp",
"key": "com.blackwalltier/blackwall-x402-guardrail",
"registry": "https://registry.modelcontextprotocol.io"
}
},
"endpoints": [
{
"protocol": "mcp",
"url": "https://mcp.blackwalltier.com"
}
]
}Fetch it by URL: GET /api/v1/registry/mcp-com-blackwalltier-blackwall-x402-guardrail/manifest?version=0.1.2
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