MarketNow Registry / Security / sheaf-mcp-proxy
sheaf-mcp-proxy
Sheaf transparent MCP proxy — the inline hard-halt. Sits between an agent and its real tool servers; a gated tool call executes only with a fresh coherent Sheaf certificate, otherwise it is parked for
Install
$ npx -y sheaf-mcp-proxyInstalling via npx/uvx/npm install executes arbitrary code from the public registry on your machine. This is the install-risk semantic of the MarketNow catalog — verify the publisher before running it.
Adoption evidence: 338 weekly registry downloads.
How MarketNow scored this
Sentinel Index Heuristics — a security-first estimate from public signals:
- Package age and release activity (stale repositories lose points)
- Verified adoption: registry downloads or GitHub stars, not follower counts
- Typosquat distance against the 150 most-installed MCP packages
- Injection markers scanned in the package description
Heuristic, not a guarantee. For verified agent credentials and revocation, see the MarketNow Trust API.
What is sheaf-mcp-proxy?
Sheaf transparent MCP proxy — the inline hard-halt. Sits between an agent and its real tool servers; a gated tool call executes only with a fresh coherent Sheaf certificate, otherwise it is parked for Indexed by MarketNow with trust 50/100 (Runs registry code).
How do I install it?
Run $ npx -y sheaf-mcp-proxy Installing via npx/uvx/npm install executes arbitrary code from the public registry on your machine. This is the install-risk semantic of the MarketNow catalog — verify the publisher before running it.
What does the trust score mean?
Security-first heuristic over public signals (age, adoption, typosquat distance, injection markers). It is not a popularity ranking and not a guarantee of safety. sheaf-mcp-proxy scores 50/100.