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com.blackwalltier/blackwall-x402-guardrail

https://mcp.blackwalltier.com

● healthy

Keyless hosted MCP: pre-signature x402 payment verdict (GO/HOLD/STOP) with a signed receipt.

Transport

streamable-http

Auth

—

Cost

—

Protocol revision

2026-07-28

negotiated, not declared

Listed in

Directories this entry was found in.

mcp-registry ↗ pulsemcp ↗

How to connect

MCP endpoint (streamable-http)

https://mcp.blackwalltier.com

JSON-RPC initialize probe

curl -X POST https://mcp.blackwalltier.com \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}'

Homepage

https://blackwalltier.com

Source code

https://github.com/bluetieroperations-create/blackwall-x402-mcp