SECONDED

Live on Base, Arc and Robinhood Chain

What your agent gets back.

Two real receipts from the production API. Each is signed by SECONDED, names both labs, and lists what was and was not checked.

Trade Check: proceed

Both models said proceed for a 5 USDC transfer on Base. Act only within what was checked.

Checked

block decode identity simulation tokens

Not checked

effects fee owner_control recipient slippage

Answered by

OpenAI and Anthropic

Paid

$0.25 in USDC on Base, transaction 0x9472…1b13

Receipt

Check 5ce5fc32…49d4, signed with key rk-2026-09-a

Token Check: NOT VERIFIED

The models disagreed. Nothing was charged. Pause; don’t act.

Checked

12 of 14 parts, including owner, eip1967_admin and impersonation

Not checked

sellability token_list

Answered by

OpenAI and Anthropic

Charged

Nothing: settlement none, no transaction

Receipt

Check 8313e628…87c4, signed with key rk-2026-09-a

Both came from the production API on September 29, 2026, before 0.4.0, and both inputs were the catalog’s own samples: a 5 USDC transfer for Trade Check, and USDC on the Base Sepolia test network for Token Check. Both signatures verify against the current public key at /v1/keys. See the full signed receipts and how to verify them.

New in 0.4.0.

0.4.0

SECONDED MCP 0.4.0, now live. Agent Work Payout Check: verify the escrow before you work. Upgraded Trade Check: see gas, balance changes and recipients before signing. Shielded Route Check: cheapest and fastest route for shielded payments. Prices cut up to 60%: checks now start at $0.10.

Four new checks: Agent Work Payout Check, x402 Payment Check, Bridge Route Check and Shielded Route Check (live on Base; Arc and Robinhood Chain soon). Trade Check now shows the gas, balance changes and who gets paid before your agent signs, on Base and Arc. Most checks now cost $0.10, or $0.15 paid on Robinhood Chain; older 0.3.3 apps keep their old prices. Works in Claude Code, Codex, Gemini and other MCP clients, plus any agent that can pay an x402 API.

Verify before your agent acts.

SECONDED runs twelve checks across Base, Arc and Robinhood Chain before an agent acts. Two rival AIs must agree; otherwise the result is NOT VERIFIED and free. Every agreed answer comes with a signed receipt listing what was and was not checked. Retrying the same signed payment returns the same purchase with no second charge, and service failures are free.

SECONDED is not a price feed, a prediction market or a settlement data oracle.

• Cost proof before a trade.

  Simulates the transaction and checks the fee, slippage and price impact where they can be measured, before your agent signs. On Base and Arc it also shows the gas, balance changes and who gets paid. The signed receipt lists exactly what was and was not checked. Trade Check

• Token and contract truth.

  Honeypots, heavy sell taxes, impersonators, admin keys, copied stock tokens and false agent claims, read from two independent sources. Token Check, Stock Token Check and Agent Registry Check

• Scam defence.

  Flags phishing, fake support and prize lures, with facts on the first five domains a message links to. Scam Check

• Agent jobs and payments.

  Checks an agent job’s escrow before your agent funds or takes the work, an x402 offer before it pays, and a bridge or shielded route before it moves money. Agent Work Payout Check, x402 Payment Check, Bridge Route Check and Shielded Route Check

How it works.

1. Your agent asks.

   Before it signs, buys or trusts, your agent sends SECONDED one question through its API and pays for the check from its own wallet, over x402. No app and no account needed.

2. Two rival models check.

   A model from OpenAI and a model from Anthropic answer blind, working from facts SECONDED verifies itself on the chain and in public records.

3. Agreed answer, or it’s free.

   When both agree, your agent gets the answer with a signed receipt. When they don’t, the result is NOT VERIFIED and costs nothing.

Twelve checks, from $0.10.

• Trade Check

  Catches swaps with no price limit, approvals that grant too much and look-alike addresses, before your agent signs. On Base and Arc it also shows the gas, balance changes and who gets paid. See Trade Check

• Token Check

  Catches honeypots, heavy sell taxes, impersonators and admin keys left in someone else’s hands. See Token Check

• Stock Token Check

  Confirms a stock token is the official Robinhood or Coinbase token and, when a current reference price is available, priced in line; on Robinhood Chain, that it is tradable now. See Stock Token Check

• Agent Registry Check

  Shows whether an agent is registered under ERC-8004, who owns it and what others have recorded. See Agent Registry Check

• Scam Check

  Flags phishing, fake support and prize lures, with facts on the first five domains a message links to. See Scam Check

• Address Screening Check

  Checks an exact address against a current digital-address list and any configured deployment pin. No safety or legal clearance is implied. See Address Screening Check

• Cross-Chain Compare

  Compares pool outputs for equal Circle USDC to EURC inputs across fixed Base Uniswap V3 and Arc Uniswap V4 routes. Two models must agree; the receipt records the verified snapshot. See Cross-Chain Compare

• Lending Check

  Shows whether one Morpho account on Base or Arc has no debt, is within the market’s liquidation limit or can be liquidated, at a named block. $0.25 per check, through the MCP or the HTTP API. See Lending Check

• Agent Work Payout Check

  Before your agent funds or takes an agent job on Base: is the escrow real, who can release the money and who judges the work. See Agent Work Payout Check

• x402 Payment Check

  Before your agent authorizes an x402 offer: checks the offer against your budget and, when you send the payment your agent would sign, that it matches the offer. See x402 Payment Check

• Bridge Route Check

  Checks a proposed route of one to four connected hops for reviewed contracts, listed addresses and public evidence that links its ends. See Bridge Route Check

• Shielded Route Check

  Compares quotes for shielded payment routes and shows the cheapest or fastest. Live on Base; Arc and Robinhood Chain soon. See Shielded Route Check