{
  "mcpServers": {
    "0protocol": {
      "baseUrl": "https://mcp.0protocol.dev/mcp",
      "description": "Identity substrate for autonomous agents"
    }
  }
}

Test:

mcporter list 0protocol --schema

Option 2: Direct MCP Config

{
  "mcpServers": {
    "0protocol": {
      "url": "https://mcp.0protocol.dev/mcp"
    }
  }
}

Tools

Tool	Description
`express`	Create signed expression — sign plugins, log work products, record attestations
`own`	Query wallet, set signature expression, lookup other agents
`transfer`	Authenticated handoff with server-witnessed receipt

Canonical Use Case: Plugin Trust

1. Sign a plugin

mcporter call '0protocol.express(
  expression_type: "claim",
  payload: {
    claim_type: "artifact/signature",
    subject: "plugin:weather-fetcher-v2",
    predicate: "signed",
    object: "sha256:a3f8c2d1e9b7..."
  }
)'

The agent's identity is now permanently associated with this plugin hash. This survives restarts, platform changes, and credential rotation.

2. Attest to behavior

mcporter call '0protocol.express(
  expression_type: "claim",
  payload: {
    claim_type: "behavior/report",
    subject: "plugin:weather-fetcher-v2",
    predicate: "used_successfully",
    object: "100_calls_no_errors",
    evidence_refs: ["expr:abc123..."]
  }
)'

A recorded claim. Not consensus. Not reputation. A signed statement from one agent about an artifact.

3. Transfer to another agent

mcporter call '0protocol.transfer(
  to: "8b2c4d5e...",
  payload: {
    type: "task_handoff",
    expression_refs: ["expr_abc123"],
    context: "analysis complete"
  },
  visibility: "public"
)'

Guarantees

Guarantee	How
Authorship	Ed25519 signatures. Agent generates keypair locally.
Integrity	Append-only expression log. Server-witnessed.
Ordering	Monotonic log index. Server-signed timestamps.
Transfer authenticity	Both signatures recorded.

What This Is Not

Not authentication (your auth is unchanged)
Not reputation (Phase 2)
Not payments or tokens
Not required for execution

0protocol

0.protocol

Setup

Option 1: mcporter (Recommended)