Qtcl MCP server

• qtcl_create_hybrid_walletwrite actionFree

  Create a new QTCL wallet with HYBRID post-quantum keys: Falcon-512 (NIST FIPS 206, 128-bit PQ security) + SL(3,p) (~70-bit classical). Returns full keypair dict with both Falcon and SL(3,p) components. Server does NOT retain secret keys. This is the v3 recommended wallet type — quantum-safe by default.

• qtcl_create_walletwrite actionFree

  Create a new QTCL post-quantum wallet backed by a real HypΓ keypair (Schnorr-Γ over SL(3,p), 512-step random walk, SHA3-256² address). Returns private_key, public_key, address, and created_at. Store private_key securely — the server never retains it.

• qtcl_get_balanceFree

  Check QTCL balance for any address. Returns balance in base units (qsat), UTXO count, and UTXO list. 1 QTCL = 100 qsat.

• qtcl_get_blockFree

  Retrieve a block by height (integer) or hash (hex string). Omit both for the latest block.

• qtcl_get_chain_infoFree

  Current blockchain state: height, latest block hash, mempool depth, oracle status, and system health vector.

• qtcl_get_oracle_registryFree

  List registered quantum oracle nodes participating in 5-oracle Byzantine consensus (3-of-5 majority).

• qtcl_get_peersFree

  List active P2P peers in the QTCL Kademlia DHT network.

• qtcl_get_pqc_statusFree

  Return PQC module status — shows whether Falcon-512 is available, key/signature sizes, security level, and hybrid signature overhead. Use to check if the server supports full hybrid PQ signatures.

• qtcl_get_priceFree

  QTCL network quantum coherence metrics and valuation signals. Note: QTCL has no public USD exchange. Returns W-state fidelity, entanglement witness, and oracle coherence as network health proxy.

• qtcl_get_quantum_metricsFree

  Live quantum coherence metrics: W-state fidelity (≥0.75 healthy), entanglement witness (NPT criterion), oracle consensus round, Mermin inequality test, and kappa=0.11 non-Markovian coherence score.

• qtcl_get_recent_transactionsFree

  List recent transactions, optionally filtered by address. Returns newest first. Max 50 per call.

• qtcl_get_transactionFree

  Look up a QTCL transaction by its SHA3-256 hash. Returns full tx details, status, and block height.

• qtcl_get_utxosFree

  List unspent transaction outputs (UTXOs) for an address. Returns tx_hash, output_index, amount_base per coin.

• qtcl_quantum_decryptFree

  Decrypt quantum-bound or quantum-assisted ciphertext. Auto-detects mode from the ciphertext dict: quantum_bound → runs QLDPC pipeline on masked key, XOR-unmasks, decrypts attestation → tries classical first, falls back to quantum-assisted recovery classical → pure classical decrypt Returns: Plaintext (hex), plaintext_length, quantum_assisted flag, quantum_mode.

• qtcl_quantum_encryptFree

  Quantum-bound encryption via IBM QLDPC hardware (ibm_marrakesh/ibm_kingston). Two modes: quantum_bound (async=false, default): XOR-masks the encapsulated key with a hardware-derived quantum key. Runs synchronously with 8192 shots for deterministic results. Recipient MUST use qtcl_quantum_decrypt to recover the key. attestation (async=true): Leaves encapsulated key unchanged, runs hardware in background. Attaches quantum_commitment as metadata. Classical decrypt still works. Returns: Ciphertext dict with quantum_commitment, quantum_status, quantum_mode, quantum_hardened, and all standard encryption fields.

• qtcl_quantum_pipelinewrite actionFree

  Run the full QLDPC pipeline directly on IBM quantum hardware. Encodes ciphertext bytes into a hyperbolic QLDPC code, runs on real IBM hardware (8192 shots), decodes syndromes via BP+OSD, and returns the recovered key fragment. Returns: Pipeline result with recovered_key_hex, residual, status, job_id, backend.

• qtcl_repair_utxosFree

  Nuclear UTXO repair: bypasses settlement machinery and directly inserts missing UTXOs from the transactions table. Use when qtcl_retro_settle reports success but UTXOs are still missing. Commits per-UTXO for maximum isolation. Returns repaired_blocks, repaired_utxos, recomputed_wallets counts.

• qtcl_retro_settleFree

  Retroactively settle all blocks whose UTXOs are missing from address_utxos. Safe to call repeatedly — idempotent. Returns counts of settled/skipped/error blocks. Use this when miner balance is lower than expected after mining blocks.

• qtcl_send_transactionwrite actionFree

  Submit a signed UTXO transaction to the QTCL network. Flat fee: 1 qsat. Finality: ~18 seconds. WORKFLOW: (1) pick nonce = int(time.time()*1000) [ms epoch]. (2) build payload = JSON.dumps({sender,recipient,amount,nonce}, sort_keys=True). (3) hash = SHA3-256(payload) as 64-char hex. (4) call qtcl_sign_message(message_hex=hash, private_key=key). (5) pass the 'signature_for_tx' field from step 4 as the 'signature' arg here, with the SAME nonce used in steps 1-4. CRITICAL: nonce must be a millisecond timestamp (>1700000000000) to avoid nonce_replay rejection. Never use sequential integers.

• qtcl_sign_messageFree

  Sign a 32-byte message hash with a HypΓ private key using Schnorr-Γ. To sign a transaction, compute: SHA3-256(JSON.dumps({"sender": from_addr, "recipient": to_addr, "amount": amount_float, "nonce": nonce_int}, sort_keys=True)) → pass the 64-char hex as message_hex. The nonce MUST match the nonce you will use in qtcl_send_transaction. Returns the full signature dict (with canonical R/Z matrix fields) — pass the entire JSON output as the signature field to qtcl_send_transaction. CRITICAL: use the 'signature_for_tx' field from the response as the 'signature' argument to qtcl_send_transaction — do not extract sub-fields.

• qtcl_sign_message_hybridFree

  Sign a 32-byte message hash with HYBRID PQC (Falcon-512 + SL(3,p)). Both Falcon and SL(3,p) signatures are computed independently — verification requires BOTH to be valid. message_hex must be 64 hex chars (SHA3-256 of signing payload). private_key_json must be the full JSON output from qtcl_create_hybrid_wallet. Returns hybrid signature dict — pass verbatim as 'signature' to qtcl_send_transaction.

• qtcl_submit_blockwrite actionFree

  Submit a fully PoW-solved and HypΓ-signed block to the chain. This is the unified miner submission path. The miner client performs PoW locally, signs the block header, then calls this with the complete payload. Required: height, block_hash, parent_hash, merkle_root, timestamp, nonce, miner_address, difficulty_bits, w_entropy_hash, hyp_signature, miner_public_key_hex. Optional: transactions (JSON array), w_state_fidelity, pq0, pq_curr, pq_last, mermin_value, mermin_violated, quantum_field_16x16x16. Returns: {status, height, block_hash, next_height, miner_reward_qtcl}.

• –Code scanremote-only server, no package to scann/a
• Live reliabilityremote reachable in 1477ms20/20
• Tool poisoning22 tool descriptions checked10/15
• Auth qualityopen endpoint exposes 5 write-action tools with no auth3/15
• Maintenancelast push 147 days ago8/15
• Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Safety score

65/100

higher than 25% of 4,460 AI and agents servers

Tools

22

the typical AI and agents server has 6

Tools that change things

23%

typical: 0%. Fewer write tools means less an agent can break

Uptime

96%

of our recent checks; the typical remote AI and agents server answers 100%

Response time

172 ms

faster than 72% of 2,331 AI and agents servers

Qtcl: common questions

Is Qtcl MCP server safe?

With care: it is graded C, so read the findings first (65/100). Read the Qtcl safety report

How do I install Qtcl?

It runs remotely at qtcl-blockchain.koyeb.app. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.

Does Qtcl need an API key?

Not as far as the registry entry and our scan can tell: no credentials are declared or required.

Is Qtcl maintained?

The last commit was 184 days ago (2026-05-04). The latest release is v8.2.0.

Is Qtcl up?

96% of our last 28 checks got an answer. We check remote servers about four times a day.

What can I use instead of Qtcl?

Servers from other publishers that do the same job: Commonly MCP server, Agent-Native Slides MCP server and Ts Core MCP server.

How does Qtcl compare with other AI and agents MCP servers?

safety score 65/100 (higher than 25% of 4,460 AI and agents servers); tools 22 (the typical AI and agents server has 6); tools that change things 23% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.