KHOTEM — Cryptographic Witness

Paid cryptographic witness for agents: seal, attest, receipts.

CommunityOnlineNo sign-inGlobalFreeRead-only

What it can do

    What data it sees

    Do you need an account

    No: the server works without sign-in

    Paid cryptographic witness for agents: seal, attest, receipts. x402 USDC/Base.

    How to connect

    How to connect KHOTEM — Cryptographic Witness to Claude

    The server address to paste into Claude settings:

    https://khotem.com/mcp

    1. Open Claude (claude.ai or the desktop app).
    2. Go to Settings → Connectors.
    3. Click Add custom connector.
    4. Paste the server address copied below into Remote MCP server URL and click Add.
    5. In a chat, click + → Connectors and switch the new connector on.

    Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

    Authorization

    After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

    How to connect KHOTEM — Cryptographic Witness to ChatGPT

    The server address to paste into ChatGPT settings:

    https://khotem.com/mcp

    1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
    2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
    3. Open Settings → Connectors and click Create.
    4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
    5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
    6. In a new chat open + → Apps/Connectors and enable the connector.

    OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

    Authorization

    On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

    How to connect KHOTEM — Cryptographic Witness to Cursor

    The server address to paste into Cursor settings:

    https://khotem.com/mcp

    Fastest: click Open in Cursor below and confirm the prompt.

    Manually:

    1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
    2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
    3. Save the file. The server appears in the MCP list; authorize it there if asked.

    Authorization

    If the service needs sign-in, an authorize button appears next to the server in the MCP list.

    Server tool list (18)

    Raw names from tools/list. Only developers need these.

    khotem_statusFREE. KHOTEM service status: version, mode, liveness.
    khotem_pingFREE. Zero-threshold handshake: send any text, get it echoed back with a sha256 stamp and server time — proves the whole path works before you pay anything.
    khotem_catalogFREE. Full catalog of paid KHOTEM services with prices (USD) and how to pay (x402 direct, USDC on Base).
    khotem_guideFREE. Step-by-step guide: how an agent pays and calls KHOTEM (x402 v2, PAYMENT-SIGNATURE или X-PAYMENT: txHash).
    khotem_startFREE. Guided onboarding: pass your wallet (or none) — get your exact state and the single next step to your first payment. No gas needed: the facilitator pays it.
    khotem_receipt_verifyFREE. Verify a KHOTEM Ed25519 receipt: signature, payload hash, ledger anchor, issuer key.
    khotem_sealPAID $0.05. Witnessed cryptographic seal: sha256 + timestamp + ledger record. Provide content (hashed and forgotten) or hash. Pay first, then pass payment_tx.
    khotem_attestPAID $0.02. Certificate of existence: exact-match a ledger record by ref (txHash | sha256 | 16-hex stamp). Pay first, then pass payment_tx.
    khotem_receiptPAID $0.01. Portable Ed25519-signed proof-of-delivery receipt for any ledger ref. Verify free via khotem_receipt_verify. Pay first, then pass payment_tx.
    khotem_gatePAID $0.01. KUDO-GATE depth 0: send code in ANY language (<=2KB) — it enters the gate, gets KUDO-wrapped, restored 1:1 (sha256==sha256), and you receive the state fold (lang/bytes/functions/secret-scan). Pay first, then pass payment_tx + code.
    khotem_trust_scorePAID $0.25. Grounded trust score 0-100 for any Base wallet/agent: payment history, network, behavior from our witness ledger + risk flags + seal. Pay first, then pass payment_tx + target.
    khotem_gate_deepPAID $0.05. KUDO-GATE depth 1-3: static read / .kudo execution in jail / forge fold. Any language wrapped 1:1; only .kudo executes. Pay first, then pass payment_tx + code (+depth).
    khotem_spaPAID $0.02. Agent context SPA: dump noisy context/logs (text, ≤256KB) → distilled essence (rarity×diversity, mechanical, deterministic, corpus-calibrated F1=1.0), repeated patterns, compression ratio, sha256. Pay first, then pass payment_tx + text.
    khotem_medPAID $0.03. Agent wallet MED diagnostics: on-chain Base vitals (USDC/ETH/nonce, live RPC) + KHOTEM ledger history → diagnosis (EMPTY/RICH_IDLE/HEALTHY) + prescription. Pay first, then pass payment_tx + wallet.
    khotem_forgePAID $0.10. FORGE: deterministic 3D relief medallion of your word (GLB+OBJ, marching-columns mesh, self-made 5x7 font, LCG grain). Pay first, then pass payment_tx + word (+seed).
    khotem_coursePAID $0.10. COURSE: one payment pulls 5 procedures (spa/med/attest/trust-score/seal) — returns course id; then call HTTP routes with header X-COURSE: <id>, zero per-call payment. Pay first, then pass payment_tx.
    khotem_intakeFREE. Concierge front door: say what you need in free text (want) — get concrete solution(s): route, price, why, ETA <1 min.
    khotem_room_joinPAID $0.02. Join the INSIDE room (VIP): daily assassin intel digests, market radar (where fat USDC flows on Base), member talk. Returns room id + write key. Pay first, then pass payment_tx.