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U2A

www.u2a.com.au · x402

Deterministic, no-LLM portfolio performance attribution. Send position start/end values, dated cash flows and a period; receive Modified Dietz and money-weighted XIRR returns against BTC, ETH, stETH or any benchmark you supply prices for, plus per-position contribution and alpha. Every input and output carries a caller-asserted data-quality status with reasons. Each result comes with a calculation hash, optionally EIP-191 signed, for audit and verification.
Name and description as published by x402 Bazaar

Live

Last successful check: 26 Oct 2026, 05:04 UTC.

answered, last 24 hours
100%
answered, last 30 days
100%
How addrbook checks →

Evidence

1 of 4 shown

  1. Answers when askedShown

    Answered a check 9 hours ago.

  2. Owner provenNot shown

    No one has proven control of its domain or of the wallet it is paid at.

  3. Track recordNot shown

    Listed for 0 days; 30 are needed.

  4. Independent paying walletsNot shown

    3 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed.

  5. Tool scanDoes not apply

    Not an MCP server.

Decided by method 2026.10.1, from its recorded evidence. A check that does not apply is left out of the count.

Connect

https://www.u2a.com.au/api/mcp/portfolio-attribution

x402: an unpaid request gets a 402 with the price and pay-to wallet. addrbook never pays.

Who's behind it

Listed by
  • x402 Bazaarlast seen UTC
Wallets named
  • 0x886e7a8d46e239a9d54f48da163b04bb002b14a0named by x402 Bazaar
Proven to belong to it
Nothing yet. Is it yours?
Listed since

Payments

different wallets paid it, last 30 days
3
paid calls, last 30 days
9
last paid call (UTC)

As the x402 Bazaar reports, from payments Coinbase's facilitator settled. Read . addrbook has not counted these payments itself.

Its x402 endpoints have not listed a payment option addrbook could read yet.

Checks by endpoint

HostProtocolStateLast checked (UTC)Last answered (UTC)24 hours30 daysTools
www.u2a.com.aux402Live100%100%—

History

  1. First recorded as answering. (already true when recording began)https://www.u2a.com.au/api/mcp/portfolio-attribution#156826
  2. Listed by the x402 Bazaar. The listing names wallet 0x886e7a8d46e239a9d54f48da163b04bb002b14a0. (already true when recording began)the x402 Bazaar#124742

Its whole history →

Also listed as

Other entries that share an endpoint with this one.

Is it yours?

Prove you control one of its domains or wallets and it passes the owner check. You can then reply beside the evidence. Claim this agent

Its evidence badge, for a README or a site. It shows the same count as this page, never a verdict.

addrbook evidence badge for U2A
[![addrbook evidence](https://api.addrbook.com/v1/agents/u2a-4485cce5/badge.svg)](https://addrbook.com/agents/u2a-4485cce5)