Creedspace MCP server
Constitutional-AI safety guardrails for any LLM — personas, constitutions, adjudication.
0 stars41 downloads/wk
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If you have run it, two minutes of your experience saves the next person an afternoon.
Creedspace tools (4)
write = sends, deletes, buys or postsRead from the package source without running it. The installed server may list more.
vcp_check_compatibilityCheck compatibility between this agent and a peer before interaction. Detects scope mismatches, privacy boundary violations, delegation limits, and value conflicts. Returns compatible/negotiable/incompatible.
vcp_negotiate_valuesInitiate or continue value negotiation with a peer agent. Uses priority cascade, Pareto search, or escalation to resolve detected conflicts. Returns negotiation outcome or escalation request.
vcp_present_attestationPresent this agent's creed attestation to a peer. Returns the attestation artifact for the current persona's governing creed, suitable for A2A Agent Card extension or direct peer exchange.
vcp_verify_peerVerify another agent's creed attestation. Checks signatures, creed hash against Hub, expiration, and revocation. Returns trust score and verification result.
Public scan report
scanner v0.1.9 · 2026-09-24 · same rubric, same numbers if you re-run it
- Code scan31 source files scanned15/25
- –Live reliabilityno gateway calls yet and no remote to proben/a
- –Tool poisoningtools not inspected (local package is not executed); not countedn/a
- Auth qualitylocal package, no credentials required12/15
- Maintenancelast push 49 days ago12/15
- Maintainer identityregistry namespace matches repository owner; GitHub account older than a year9/10
Findings (2)
- mediumnpm install lifecycle script present
install.script - mediumnpm install lifecycle script present
install.scriptpackage.json: …dist -name '*.map' 2>/dev/null)\"", "postinstall": "node -e \"try{const f='./dist/postinst…
How Creedspace compares
Against every graded AI and agents MCP server, from our own scans and uptime checks. Updated after each scan run.
- Safety score
- 74/100
- higher than 43% of 4,461 AI and agents servers
- Tools
- 4
- the typical AI and agents server has 6
- Tools that change things
- 0%
- typical: 0%. Fewer write tools means less an agent can break
- Downloads a week
- 41
- more than 32% of 1,554 AI and agents servers with a package
What its tools let an agent do: 4 read
Install Creedspace in Claude Code, Cursor or VS Code
Runs npx -y @creedspace/mcp-server on your machine. Read the scan report first; the gateway never runs local packages.
claude mcp add creedspace-mcp-server -- npx -y @creedspace/mcp-server
What the publisher says
From the Creedspace repository's README, as published. We do not edit it. Read it on GitHub
creedspace-mcp-server
Universal MCP server for Creed Space - AI safety guardrails in 10 seconds.
Available in
The server is published to the canonical MCP catalogues, so registry-aware clients can discover and install it directly — or use any command in Quick Start below.
- npm — @creedspace/mcp-server, the package every install path resolves to.
- Official MCP Registry — io.github.Creed-Space/creedspace-mcp-server.
- GitHub — source, issues, and the server.json manifest.
- Smithery — nell/creedspace, a gateway-fronted Streamable HTTP endpoint.
Also rolling out across the wider MCP ecosystem: mcp.directory, mcpservers.org, PulseMCP (via the registry ingest), and mcp.so.
Quick Start
# STDIO transport (Claude Desktop, OpenAI Codex)
npx @creedspace/mcp-server --persona ambassador
# HTTP transport (OpenAI Agents SDK)
npx @creedspace/mcp-server --transport http --port 3100
# Test API connection
npx @creedspace/mcp-server testWhat is Creed Space?
Creed Space provides personalized AI safety guardrails through Constitutional AI personas. Each persona enforces specific values and behaviors, ensuring AI assistants operate within defined ethical boundaries.
- 🛡️ Reduces harmful AI outputs via constitutional evaluation of every response
- 🎯 Refuses dangerous prompts according to the active persona's values
- 🚀 10-second setup with any MCP-compatible AI
Available Personas
Installation
Option 1: Use with npx (Recommended)
# No installation needed - just run!
npx @creedspace/mcp-server --persona ambassadorOption 2: Global Installation
npm install -g @creedspace/mcp-server
creedspace-mcp --persona ambassadorOption 3: Project Dependency
npm install @creedspace/mcp-serverClaude Desktop Integration
Add to your claudedesktopconfig.json:
{
"mcpServers": {
"creedspace": {
"command": "npx",
"args": ["@creedspace/mcp-server", "--persona", "ambassador"]
}
}
}Then restart Claude Desktop to load the Creed Space guardrails.
Configuration
Environment Variables
# .env file
CREEDSPACE_API_URL=https://api.creed.space
CREEDSPACE_API_KEY=your-api-key-here # Optional
CREEDSPACE_DEFAULT_PERSONA=ambassadorCommand Line Options
creedspace-mcp \
--persona ambassador \
--url https://api.creed.space \
--api-key YOUR_KEY \
--cache-ttl 300000 \
--offline
# HTTP Transport Options
creedspace-mcp \
--transport http \
--port 3100 \
--host localhost \
--api-key YOUR_KEY \
--cors \
--cors-origin http://localhost:3000 \
--statelessTransport Types
Shortened. The full README is on GitHub.
Nothing above is checked by us. What we check is on the safety report.
Creedspace: common questions
- Is Creedspace MCP server safe?
- Mostly: it is graded B (74/100). Read the Creedspace safety report
- How do I install Creedspace?
- It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
- Does Creedspace need an API key?
- Not as far as the registry entry and our scan can tell: no credentials are declared or required.
- Is Creedspace maintained?
- The last commit was 91 days ago (2026-08-06). The latest release is v1.1.4.
- What can I use instead of Creedspace?
- Servers from other publishers that do the same job: Vibe Check MCP server and Shellward MCP server.
- How does Creedspace compare with other AI and agents MCP servers?
- safety score 74/100 (higher than 43% of 4,461 AI and agents servers); tools 4 (the typical AI and agents server has 6); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.
Alternatives to Creedspace
Same job from other publishers: the closest match first, then the best rated.
- Vibe CheckMetacognitive AI agent oversight: adaptive CPI interrupts for alignment, reflection and safetynot reviewedEstablishedB
- ShellwardAI agent security: 7 MCP tools for injection detection, PII scanning, command safety, DLP.not reviewedEstablishedA