KHOTEM

Cryptographic witness and settlement router for AI agents: seal, attest, verify, timestamp, gas-cost routing and booth rides — paid per call via x402. Accepted on the wire: USDC/DAI on Base and Polygon, native USDC on Linea, zkSync Era and Scroll, and USDC on Solana. Zero onboarding: no account, no API key, your wallet is your identity. Trial seal $0.01. Loyalty ladder: repeat payers −20%/−30% forever, automatic. 中文： AI 代理的密码学见证与结算路由 — 印章 · 验证 · 审计 · 信用报告 · Gas 路由。We witness. We don't judge.

Skills

• Verify session integrity
  Integrity check of sealed sessions (merkle+CID). Body: session object(s) with seal.root. Returns verdict ALL VERIFIED / TAMPERED with reason.
  verifyintegritymerkletamper-checkaudit-trail
• Audit thread with verdict
  Batch audit of an array of sessions with per-item results and overall verdict.
  auditbatchverdictcompliance
• Witnessed stamp of hash/content
  Witnessed stamp + timestamp. Body: {"content": "..."} (hashed and forgotten) or {"hash": "<sha256 hex>"} — content never leaves your machine. Returns seal_stamp + payment_seal.
  sealtimestampproof-of-existencereceipthashing
• Certificate of existence
  Existence certificate. Body: {"ref": "0x<txHash>" | "<sha256 hex>" | "<16-hex stamp>"} — exact match against the ledger. CONFIRMED + entry, or honest NOT_FOUND.
  attestcertificateproofledger-lookup
• Sealed operating-law documents (Russian)
  GET /api/doc/15 | /api/doc/16 | /api/doc/17 — sealed documents with sha16.
  documentssealed-docsrussian
• Full sealed document thread (Russian)
  GET /api/thread — the full sealed thread of documents with per-file sha16.
  threaddocumentssealed-docsrussian
• Quantum circuit simulation (exact statevector)
  POST /api/qsim {qubits:1-12, gates:[H,X,Y,Z,S,T,RX,RY,RZ,CNOT,CZ], shots<=1024} — exact amplitudes of any quantum circuit, computed classically with mathematical precision. No IBM account, no API key: pay $0.10 per call, get probabilities + sampled measurements + ledger seal.
  quantumsimulationstatevectorqubitscomputeeducationresearch
• Sealed compressed container (KUAR)
  POST /api/archive {files: {name: "text"|{"b64":"..."}}, password?} — proprietary lossless compression into a sealed KUAR container: per-file integrity manifest, optional AES-256-GCM encryption, sha256 of the whole archive + ledger seal. Verifiable, portable.
  archivecompressionsealedintegritysha256encryptionevidence
• Reproducibility seal (ORACLE)
  POST /api/oracle {url, runs?:3..10, pick?} — N sequential probes of an https endpoint; verdict REPRODUCIBLE only if all N responses match byte-exact, honest UNSTABLE/UNREACHABLE otherwise. SLA witness, drift detector, sealed in the eternal ledger.
  oraclereproducibilityslawitnessmonitoringdriftattestation
• Certified state-tuning session (TUNE)
  POST /api/tune {state:number[22], target?:number[22], steps?:1..8} — controlled evolution of a 22-dimensional state under a quality functional; returns tuned vector, honest closure number, sector profile, eternal-ledger seal. The seal certifies the computation — never promises convergence.
  tunestatecertifiedtransformationsealmetrics
• On-chain token price oracle
  GET /api/price?ids=ethereum,usdc — live prices from Chainlink feeds on Base (the same chain that settles your payment). Cached 60s. Zero API keys, zero upstream cost.
  priceoracleon-chain-datachainlinkmarket-data
• Live settlement-cost route
  GET /api/gas/route — live settlement-cost ranking across Base, Polygon, Linea, zkSync Era, Scroll and Solana: cheapest rail, estimated USD per settle, savings vs Base, RPC latency and explicit EVM-80k / Solana-10k-CU assumption.
  gasroutingsettlementscrollbasesolanacost-optimization
• Booth ride for x402 sellers
  POST /api/booth {url} — KHOTEM pays a quoted x402 seller for you from refund-armed Base/Polygon custody. Total is always quoted first: seller price + $0.05 toll; free quote through MCP tool khotem_booth_quote.
  boothx402proxypayment-routingseller-access
• Prepaid instant channel
  POST /api/channel/open/lite ($0.25) or /api/channel/open ($1.00): one x402 deposit opens a channel — then call ANY paid route with header X-CHANNEL: <id>:<key>. No on-chain wait per call, receipt per call. Built for high-frequency agents (1000+ calls/day).
  channelprepaidinstanthigh-frequencyx402
• Multi-chain wallet dossier
  POST /api/wallet-dossier {"address":"0x…"} — USDC/native balances + tx counts across Base, Polygon, Linea, zkSync, Scroll, ERC-8004 identity signal, KHOTEM payment history, verdict + sealed dossier.
  walletdossiermultichainerc8004intel
• Codec arena (sealed benchmark)
  POST /api/pack/bench {"text":"..."} — KUAR vs gzip-9 vs brotli-11 on your payload: bytes/ratio/ms + round-trip 1:1 proof, sealed ranking.
  codecbenchmarkcompressionsealed
• Ops inside compressed container
  POST /api/pack/ops {"kuar_b64":"...","op":"grep","pattern":"..."} — stats/list/verify/grep/get INSIDE a compressed KUAR container without unpacking to disk; per-chunk sha256 integrity.
  codeccompressed-opsrandom-accesskuar
• Agent verifier (anti agent-washing)
  POST /api/agent-verify {"repo":"owner/name"} — is it a real agent or a renamed chatbot: 6 agent-washing signals + tests + CI + secret-leak scan over the public GitHub tree; sealed verdict.
  agentsverificationauditsealed
• Packet batch — up to 10 rooms, one payment
  POST /api/packet {"ops":[{"route":"/api/spa","body":{...}}, ...up to 10]} — pack up to 10 paid rooms into ONE request and ONE payment: total = sum of solo prices × 0.8, parallel execution, sealed packet receipt.
  packetbatchdiscountbundling
• Trial seal (content <=1KB, real stamp)
  Real seal stamp for $0.01 — the cheapest entry. First EVM deal −50%; Solana rides list price.
  trialseal
• Trial verification of trial/free-tier seals
  Verify a trial or legacy free_trial seal by ref for $0.01.
  trialattest
• Live weather oracle (НЕБО)
  GET /api/weather?city=Berlin or ?lat=&lon= — temperature, humidity, precipitation, wind, WMO code, UTC timestamp; sealed snapshot; Open-Meteo, zero-key.
  weatheroraclelive-dataopen-meteo
• Academic search oracle (ЗВЕЗДА)
  GET /api/scholar?q=&limit= — OpenAlex 250M+ works: title, year, DOI, citations, open-access flag, authors + total hit count; sealed snapshot.
  academicsearchpapersopenalexresearch
• Pre-flight URL status guard (СТРАЖ)
  POST /api/urlstatus {urls:[≤5]} — ALIVE/DOWN/UNREACHABLE verdict, HTTP status, latency, redirect info per URL; SSRF-guarded. Check any seller or dependency BEFORE paying it.
  statusuptimepreflightmonitoringdue-diligence
• Surgical page extraction (СКАЛЬПЕЛЬ)
  POST /api/selector {url, pick:{name:"css-selector"}} — exact text per selector (≤20 picks, ≤5 matches), page sha256, sealed; SSRF-guarded, redirect re-checked per hop.
  scrapingextractioncssstructured-dataweb-data
• Sealed pool tick batch (СТАЯ)
  GET /api/pool/tick?chain=base&n=<epoch_minute> — sealed per-minute block-processing batch from the swarm over Base/Linea/zkSync/Scroll + Bitcoin witness. Free vitals: GET /api/pool/status.
  blockspoolsealed-databasebitcoin-witness

How to call

https://khotem.com

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