costheta-verify
MCP serverDev toolscostheta gives your AI randomness generated from cosmic-ray detections, so random results can be checked against real physical events. Once added, your AI can draw random values from a free beacon or request signed decisions when you need a verifiable record.
Use costheta-verify in Claude, ChatGPT or Ahel Desktop
Free. Sign in, add costheta-verify and connect your AI. About a minute.
Also: Claude Code · Cursor · Codex
Then ask your AI: use the costheta random tool from costheta-verify
No key or account is asked for. Not verified by us yet: Ahel has not run a call through it.
Details
Available today. Use it from your connected AI after setup.
No key or account is asked for. Not verified by us yet: Ahel has not run a call through it.
After adding costheta, start with the free beacon to draw your first random values. The repository at github.com/costhetadev/costheta-verify has details on verification and signed decisions.
What your AI can do with it
- Draw random values generated from cosmic-ray detections
- Verify that random results trace back to real cosmic-ray events
- Use the free beacon to get randomness at no cost
- Request signed decisions as a paid option when you need a verifiable record
Install costheta-verify
The server’s own address, for the clients that take one directly. Or connect Ahel once and every client you use reads it from one address, with the account kept on Ahel rather than in each client’s config.
Claude Code
claude mcp add --transport http --scope user costheta-verify 'https://costheta.dev/mcp'Run it once in your project, then open /mcp to approve any sign-in the server asks for.
Claude Desktop
https://costheta.dev/mcpAdd a custom connector in Settings, paste this address, and approve the sign-in.
Cursor
cursor://anysphere.cursor-deeplink/mcp/install?name=costheta-verify&config=eyJ1cmwiOiJodHRwczovL2Nvc3RoZXRhLmRldi9tY3AifQ==Open the link and Cursor adds the server at that address.
ChatGPT
https://costheta.dev/mcpIn Settings, enable Developer mode, create an MCP app, and paste this address. Your plan and workspace must allow custom apps.
Codex
codex mcp add costheta-verify --url 'https://costheta.dev/mcp'Run it once, then sign in with codex mcp login costheta-verify if the server asks for an account.
From the project's README
As published by costhetadev/costheta-verify in README.md.
Public verifier for costheta decision certificates.
Verifies: the canonical hash of the certificate body, the Ed25519 signature (RFC 8032) and the ML-DSA signature (FIPS 204), against the public keys published at costheta.dev/keys.
Code lands here shortly. The certificate format (v0.3) is specified in the federation proposal: https://github.com/costhetadev/federation-proposal
Tools it offers (3)
What this server listed when Ahel dialed its public endpoint in Oct 2026, with no key and no account of yours. The names are the server’s own.
costheta_randomcostheta_decidecostheta_witness
Signals
- Last commit
- Aug 2026
Advanced
- Delivery
- costheta MCP server → your Ahel connector (mcp.ahel.ai) → your AI.
- Item type
- mcp-server
- Key
dev-costheta-costheta- Source
- github.com/costhetadev/costheta-verify
- Hosted endpoint
https://costheta.dev/mcp
github.com/costhetadev/costheta-verify