Costheta MCP server
{
"mcpServers": {
"costheta": {
"type": "http",
"url": "https://costheta.dev/mcp"
}
}
}{
"mcpServers": {
"costheta": {
"type": "http",
"url": "https://costheta.dev/mcp"
}
}
}{
"mcpServers": {
"costheta": {
"type": "http",
"url": "https://costheta.dev/mcp"
}
}
}{
"servers": {
"costheta": {
"type": "http",
"url": "https://costheta.dev/mcp"
}
}
}{
"mcpServers": {
"costheta": {
"type": "http",
"url": "https://costheta.dev/mcp"
}
}
}file .mcp.json (in your project root)file claude_desktop_config.jsonfile ~/.cursor/mcp.jsonfile .vscode/mcp.jsonfile ~/.codeium/windsurf/mcp_config.jsonversion 0.1.0
What it does
This server verifies certificates from costheta, which provide verifiable physical randomness derived from cosmic-ray detections. It checks the cryptographic signatures and hashes of decision certificates using Ed25519 and ML-DSA algorithms against public keys published by costheta.
- Verify the authenticity and integrity of costheta randomness certificates before using them in applications that require verified entropy sources.
- Validate Ed25519 and ML-DSA signatures on decision certificates to ensure they have not been tampered with.
- Cross-reference certificate signatures against the official public keys published at costheta.dev/keys to confirm legitimacy.
Tools this server exposes
| Tool | Does |
|---|---|
| certificate_verification | Verifies the canonical hash, Ed25519 signature, and ML-DSA signature of a costheta decision certificate. |
Before you enable it
An MCP server runs with whatever access you give it. Start with a development account rather than production, and check which tools the server exposes before you let an agent call them unattended.