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Neutral MCP server for AgentEnvelope authority: sovereign verify + vault verify/lookup/mint.
About
Neutral MCP server for AgentEnvelope authority: sovereign verify + vault verify/lookup/mint.
Security Report
Valid MCP server (2 strong, 2 medium validity signals). No known CVEs in dependencies. Package registry verified. Imported from the Official MCP Registry.
4 files analyzed · 1 issue found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Environment variable: AE_API_KEY
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-blackboxengineering-agent-envelope-mcp": {
"env": {
"AE_API_KEY": "your-ae-api-key-here"
},
"args": [
"-y",
"agent-envelope-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
agent-envelope-mcp
The neutral authority layer for agent runtimes, as an MCP server.
Any MCP client — Claude, an OpenAI agent, LangChain, CrewAI, a custom runtime — can call these tools to check and issue agent authority without building its own policy engine, audit log, or verification stack. AgentEnvelope is owned by no framework, so every framework can embed it.
Run
npx agent-envelope-mcp
It speaks MCP over stdio. No API key is needed to start, or to use the sovereign
verifier — only the vault-governed tools require AE_API_KEY.
Wire it into an MCP client
Point your client at the command and pass the vault-issued key in the environment (only needed for the custody tools):
{
"mcpServers": {
"agent-envelope": {
"command": "npx",
"args": ["-y", "agent-envelope-mcp"],
"env": { "AE_API_KEY": "your-vault-issued-key" }
}
}
}
Tools
| Tool | Mode | Credential |
|---|---|---|
ae_verify_sovereign | Sovereign | none — offline, always free |
ae_get_agent | Custody | AE_API_KEY |
ae_verify_action | Custody | AE_API_KEY |
ae_mint | Custody | AE_API_KEY |
ae_verify_sovereign— verify a signed message against a known agent address. Pure crypto: no vault, no key, no network. Verification is always free.ae_get_agent— fetch the vault-registered public record for an agent id.ae_verify_action— verify a signed action against the vault-held record.ae_mint— mint a capability through the vault from aMintDelegateand a signedMintRequest, returning a mint receipt. This is a governed action.
The sovereign verifier needs no vault and no key. The vault-gated tools are the governed surface a framework offloads rather than rebuilds.
Programmatic use
import { createServer } from 'agent-envelope-mcp';
// mount createServer() on your own MCP transport
Environment
| Variable | Required for | Purpose |
|---|---|---|
AE_API_KEY | ae_get_agent, ae_verify_action, ae_mint | Vault-issued API key |
The server is fail-closed: vault-gated tools return an error result when
AE_API_KEY is absent rather than exposing an unauthenticated surface.
License
MIT
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