apix402
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Live onchain governance, vesting, oracle and Safe authority checks. Free samples over MCP.
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Check the contract, not a tracker.16 onchain checks an agent can buy one call at a time — governance, vesting, oracles, lending risk, Safe spending authority. No key, no account, no subscription: the wallet is the identity.
One example, and it is why this exists: a public tracker showed the Arbitrum DAO as archived with no active proposals, while its Governor contract had a live vote on 48M ARB. See it yourself for free in/dao-proposals/preview— thediscrepancyfield counts the disagreements without charging for them.
npx agentcash try https://api402x.com/dao-proposals
Writing the client yourself: any x402 client works — the challenge is in thepayment-requiredheader, and the shape of the response travels with it. Full spec at/openapi.json, short table of contents at/llms.txt.
The one built to be called twice GET /safe-authority-check — $0.002. Ask whether the spending authority over a Safe changed since you last looked. You keep the fingerprint, so there is no account and nothing stored here. It walks modules recursively: a Safe that reads as 1-of-1 can in fact be governed through a module by a separate 2-of-8 Safe, and a flat owner list would miss exactly that. Built for a daily cron; when it says changed, buy /safe-signer-drift for what changed and in which block.
Every route gives a new payer address a few calls at no charge, counted per route and per wallet. Not a trial window — there is no clock, the count simply does not reset.
- /vesting-status— 3 free calls, wallet must hold $0.03
- /proposal-status— 3 free calls, wallet must hold $0.03
- /dao-proposals— 2 free calls, wallet must hold $0.05
- /insider-early-sale-check— 1 free call, wallet must hold $0.50 —cached answers only
- /oracle-staleness— 3 free calls, wallet must hold $0.03
- /lending-depeg-exposure— 2 free calls, wallet must hold $0.05
- /safe-signer-drift— 1 free call, wallet must hold $0.05 —cached answers only
- /safe-authority-check— 3 free calls, wallet must hold $0.02
- /proposal-state-check— 3 free calls, wallet must hold $0.02
- /vesting-plan-control-check— 3 free calls, wallet must hold $0.02
- /x402-listing-drift-check— 3 free calls, wallet must hold $0.02
- /advisory-fix-availability-check— 3 free calls, wallet must hold $0.02
- /dependency-repo-vanished-check— 3 free calls, wallet must hold $0.02
- /rpc-capability-probe— 3 free calls, wallet must hold $0.03
- /mcp-registry-remote-drift— 3 free calls, wallet must hold $0.02
Two routes are free only when the answer is already cached.A cold run of/insider-early-sale-checkscans a beneficiary's full onchain transfer history through a rate-limited upstream gateway, and a cold/safe-signer-driftis a sequential archive search on a network with exactly one archive endpoint. Those runs are paid, always. If someone has already warmed the same query, you get it free; if not, you get an explicitfree_tier_coldand your free quota is not spent.
There is a daily ceiling of 20 free calls per route, shared by everyone.It exists because a wallet address costs nothing to create, so a per-wallet allowance alone bounds nothing. It has never been reached by ordinary use.
Your wallet still signs.A free call goes through the ordinary x402 flow: the request carries a signed payment authorization, and the server skips settling it. No USDC moves and nothing is deducted, but an agent with no wallet cannot use this — it is free, not anonymous. After the count is used up, the same route simply starts settling as normal.
How prices are set.Price follows the cost of producing the answer: a few contract reads cost a fraction of a cent; scanning history or using scarce archive capacity costs more. That is the whole rule, and it is why/safe-signer-driftand/insider-early-sale-checkcost more than the rest — one runs a sequential archive search on a network with a single archive endpoint, the other scans a full transfer history through a rate-limited gateway. Prices move when that measured cost moves, not otherwise.
The wallet must hold USDC on Base — ten times the route's price(listed above, per route). Nothing is reserved and nothing is deducted; the balance is only read. This exists because the allowance is permanent and keyed to the address, so a fresh address is a fresh allowance. The previous bar was any non-zero balance, and dust costs nothing: funding a thousand throwaway wallets on Base costs about a dollar in gas. The bar is deliberately low enough that a real buyer of a $0.01 call clears it — it is meant to price out farming, not to price out you.
No data for this window yet. Sub-day windows started accumulating on 2026-08-16; before that only daily aggregates exist, and they cannot be split into hours after the fact. An empty window here means absence of measurement, not absence of traffic.
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