io.github.hawthornhollows/passage-protocol
Departure and admission records for AI agents with Ed25519/P-256 signatures.
MCP server · by hawthornhollows
About
io.github.hawthornhollows/passage-protocol is an MCP server published by hawthornhollows. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-10-11 and have recorded no change since. As of our marketplace pass on 2026-10-13.
What it asks for
- Runs on your machine
None of the marketplaces we read publishes its tools or the settings it asks for.
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Package
npm @cellar-door/mcp-server (@cellar-door/mcp-server on npm)
- npm downloads/week: 41 (2026-10-12)
- npm downloads/month: 237 (2026-10-12)
- Latest version on npm: 0.1.7, published 2026-03-14
- Declared version 0.1.7 is not listed on npm
npm facts come from the public npm registry (registry.npmjs.org, api.npmjs.org). Each figure is the registry's own and is never added to another. A registry that publishes no figure shows none: no number is not zero.
Works with
- Claude Code
- Codex
- Cursor
- VS Code
- Copilot CLI
A one-click link opens the client, which asks you to confirm before it adds the server.
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a local MCP server: npm package
Built from what Official MCP Registry declares.
claude mcp add --transport stdio passage-protocol -- npx -y @cellar-door/mcp-server
[mcp_servers.passage-protocol]
command = "npx"
args = ["-y", "@cellar-door/mcp-server"]
{
"mcpServers": {
"passage-protocol": {
"command": "npx",
"args": [
"-y",
"@cellar-door/mcp-server"
]
}
}
}
Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 0.1.7 | Downloads/month (npm): 237 Downloads/week (npm): 41 |
Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
What changed
Nothing has moved on this plugin since we started watching it.
Similar plugins
Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.
-
passport com.scopeblind/passport
Portable cryptographic identity for AI agents. Ed25519 keypairs and signed manifests.
-
aga-mcp-server io.github.attestedintelligence/aga-mcp-server
Verifiable decision records for AI agents: signed receipts for calls to its own governed tools.
-
provenonce io.github.ProvenonceAI/provenonce
Cryptographic identity, SIGIL naming, heartbeat, and passports for AI agents.
-
waxseal io.github.degenlegion-com/waxseal
Ed25519 identity for AI agents. Verify seals, sign documents, gate actions with approvals.
-
agent-transaction-control network.flint/agent-transaction-control
Issue Agent Passports and verify agent authority before value moves. Signed verification records.
-
agent-guild io.github.AgentTanuki/agent-guild
Rank agents; signed machine messages + wallet gates via x402; free verifiable agent passports.
-
mcp com.pcrzero/mcp
Issue signed receipts for AI agent actions; verify any receipt offline - free, no account.
-
vera-commons io.github.frinto/vera-commons
Provider-neutral commons where AI agents register and exchange ed25519-signed messages.
-
Post-quantum (ML-DSA-65/FIPS-204) agent identity + AI-decision receipts, verifiable offline.
-
verity-mcp io.github.meloliva14/verity-mcp
Fail-closed verify-before-you-act gate for AI agents. Signed receipts. Pay-per-call via x402.
Similar plugins by marketplace
The same question asked of one marketplace at a time: is there an analog of this plugin there?
Has a listing on Claude Code: claude-plugins-community (5)
-
MCP security gateway that wraps any MCP server with per-tool policies, Ed25519-signed decision receipts, and human approval gates. Shadow mode (default) logs every tool call…
-
Sovereignty infrastructure for AI agents. Gives your agent encrypted state (AES-256-GCM), self-custodied identity (Ed25519), selective disclosure (Pedersen commitments, Schnorr…
-
Secure MCP servers with OAuth 2.1, token introspection, dynamic client registration, and CIMD so AI agents can call your MCP tools with verified identities
-
swarmwage io.github.Swarmwage/swarmwage
Hire and pay specialized AI agents in USDC on Base. Open MCP protocol above x402.
-
Ed25519-signs every tool call and appends to a hash-chained, tamper-evident audit log. Zero config — signing starts immediately after install. No native dependencies (embedded…
Has a listing on Claude Code: claude-plugins-official (5)
-
mcp-server io.github.cap-js/mcp-server
Model Context Protocol (MCP) server for AI-assisted development of CAP applications.
-
mdk-mcp-server io.github.SAP/mdk-mcp-server
Model Context Protocol (MCP) server for AI-assisted development of MDK applications.
-
Detect an MCP server's language (Python, TypeScript or Go) and instrument it with the matching Pendo SDK so MCP tool calls flow into Pendo Agent Analytics.
-
firebase-mcp io.github.firebase/firebase-mcp
Gives AI development tools Firebase-specific capabilities and expertise.
-
Agentforce Agent Development Life Cycle — author, discover, scaffold, deploy, test, and optimize .agent files
Has a listing on Claude: knowledge-work-plugins (5)
-
The Vanta plugin connects Claude Code to Vanta's security and compliance platform through the Vanta MCP server. It combines Vanta's test-specific remediation intelligence with…
-
Figma design platform integration. Access design files, extract component information, read design tokens, and translate designs into code. Bridge the gap between design and…
-
MCP server for terminal commands, file operations, and process management
-
Enterprise-grade auth, easy to implement. Add login, SSO, MFA, and access control to any app with framework-aware guidance.
-
Hosted MCP server for AI-assisted Grafana Cloud observability — no local installation required.
Has a listing on Codex: openai-curated (openai/plugins) (5)
-
CrowdStrike Falcon Foundry development skills for building cybersecurity applications on the Falcon platform. Includes UI development, collections, functions, workflows, API…
-
Codex Security workflows for security scans, analysis, and investigation.
-
CrowdStrike Falcon Fusion skills for authoring, deploying, and executing Fusion workflows. Includes live action discovery, YAML authoring with schema validation, workflow import…
-
Cloudflare platform plugin with curated skills for Workers, Wrangler, and Agents SDK plus the official Cloudflare API MCP server.
-
Comprehensive skill for the entire Temporal lifecycle — developing applications, using the Temporal CLI, running and managing Temporal Server, and working with Temporal Cloud.
Has a listing on Community GitHub marketplaces (5)
-
ai-agent-firewall com.fidacy/ai-agent-firewall
Every agent action watched, every money-moving one gated, every verdict independently verifiable.
-
openttt-pot io.github.Helm-Protocol/openttt-pot
Cryptographic audit trail for Claude Code workflows — tamper-proof timestamps, IETF TTTPS compliant.
-
hushdrop io.github.maxtechera/hushdrop
Open-source artifact sharing for AI agents: private, branded, zero-knowledge links.
-
logi-approval dev.1pass/logi-approval
logi Agent Approval Gate — human approval on the phone before high-risk agent actions.
-
forkflux-mcp io.github.forkflux/forkflux-mcp
Self-hosted multi-agent collaboration and audit layer for AI-assisted engineering teams
Has a listing on Copilot CLI: github/awesome-copilot (5)
-
Complete toolkit for building Model Context Protocol (MCP) servers in Go using the official github.com/modelcontextprotocol/go-sdk. Includes instructions for best practices, a…
-
Complete toolkit for building Model Context Protocol (MCP) servers in TypeScript/Node.js using the official SDK. Includes instructions for best practices, a prompt for generating…
-
Safe BLE diagnostics, evidence workflows, and guarded automation for AI agents.
-
Complete toolkit for building Model Context Protocol (MCP) servers in Kotlin using the official io.modelcontextprotocol:kotlin-sdk library. Includes instructions for best…
-
Comprehensive resources for building Model Context Protocol servers using the official PHP SDK with attribute-based discovery, including best practices, project generation, and…
Has a listing on Copilot CLI: github/copilot-plugins (5)
-
Toolkit for building Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, and capability configuration.
-
Advanced Security plugin for GitHub Copilot.
-
mcp-apps
Generate MCP App widgets for MCP tools. Produces self-contained HTML widgets using the MCP Apps protocol.
-
model-apps
Build and deploy Power Apps generative pages for model-driven apps with specialist agents for planning, entity creation, and parallel code generation. Requires PAC CLI >= 2.7.0…
-
Build Power Apps Canvas Apps using the Canvas Authoring MCP server.
Has a listing on Cursor: cursor/plugins (5)
-
Let Grok Bot reach MCP servers on your private Tailscale network. Sign in to Tailscale to connect your tailnet; Grok Bot joins it as one tagged device and only reaches the hosts…
-
CLI-backed repo compatibility scans plus agents that audit startup, validation, and docs against reality.
-
Build apps, scripts, and automations with the TypeScript SDK.
-
Scaffold and validate new agent plugins.
-
Fan large tasks out across parallel cloud agents with planners, workers, verifiers, and structured handoffs.
Has a listing on Docker MCP Catalog (5)
-
Dynatrace-mcp io.github.dynatrace-oss/Dynatrace-mcp
[DEPRECATED] Dynatrace MCP Server. Migrate to dynatrace-for-ai or Dynatrace Remote MCP Server.
-
stackhawk com.stackhawk/stackhawk
An MCP server that provides interaction with StackHawk's security scanning platform.
-
Give your AI agents trusted access to the full Postman platform.
-
Remote MCP server for the Hackle Admin API: experiments, feature flags, remote config, messaging.
-
MCP server providing Prometheus metrics access and PromQL query execution for AI assistants
Has a listing on Official MCP Registry (5)
-
passport com.scopeblind/passport
Portable cryptographic identity for AI agents. Ed25519 keypairs and signed manifests.
-
aga-mcp-server io.github.attestedintelligence/aga-mcp-server
Verifiable decision records for AI agents: signed receipts for calls to its own governed tools.
-
provenonce io.github.ProvenonceAI/provenonce
Cryptographic identity, SIGIL naming, heartbeat, and passports for AI agents.
-
waxseal io.github.degenlegion-com/waxseal
Ed25519 identity for AI agents. Verify seals, sign documents, gate actions with approvals.
-
agent-transaction-control network.flint/agent-transaction-control
Issue Agent Passports and verify agent authority before value moves. Signed verification records.
Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.
Is this your plugin?
Add it to your projects and prove you maintain it with a file in its repository, a file on your domain or a DNS record. You get alerts when a marketplace lists it, drops it, changes its verified mark or what it asks for, and its remote endpoint goes on monitoring as a web service.
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.