A payment proves money moved.This is what came back for it.

Twice a day Teppi asks every listed endpoint for its price, pays nothing, and keeps the reply. ?

1. TeppiAsked the price, paid nothingGET vibesprings.net/api/price/btc-usd
2. SellerReplied with its price402 · $0.002 USDC on Base · 127 ms
3. TeppiKept the replysha256:8db913356d…8b2b87
4. RecordStays unratedUNRATED answering is not delivering

Teppi pays the listed price, asks a question it already knows the answer to, and scores the reply. ?

1. TeppiPicked a questionfirecrawl.mpp.tempo.xyz/v1/scrape · held-out task gt_01M3C…WX1E
2. TeppiPaid the listed price$0.002 Tempo · USDC.e 0xd352d690…4b2fffa0 ↗
3. SellerAnswereddelivered
4. TeppiScored the answerschema not scoredcorrect 1.000honest 1.000
5. RecordSaved the request and the replysha256:69d4e93443…a17b8d

Thirty paid calls over fourteen days earn a letter grade, and anyone can recompute it. ?

1. TeppiPaid again and againvibesprings.net/api/price/btc-usd at random times, from rotating wallets
2. RecordGave its first gradeC 0.754 on 30 paid calls, 15 days ago
3. RecordKeeps it as calls come inB 0.868 on 45 · Outcome verified
4. AnyoneCan recompute itfrom the calls the grade lists

The same question, paid on Base and on Tempo minutes apart, with both answers kept. ?

agent402.tools/api/vin-decode

Both answers scored the same.

About every eighteen days, one paid call to each address that gets paid, from its own budget. ?

1. TeppiPicked the busiest endpoint at one addressone call per address about every eighteen days
2. TeppiPaid, asking nothing privatex402.orthogonal.com/speixFkLB/api/v1/hourly $0.186 Base · USDC 0xb94aa56b…93f05769 ↗
3. RecordSaved what came backdelivered sha256:26954823f8…cd64b1

Before paying a URL, an agent asks what the record knows and gets a signed answer. ?

1. AgentAsks about the URL it is about to payGET /v1/check?url=https://vibesprings.net/api/price/btc-usd
2. TeppiReplies with what it knowsthe grade or none, how many paid calls, who gets paid, a way to buy on delivery
3. AgentVerifies the signaturewith teppi-client
4. AgentDecidespay, skip, or buy through Teppi

Teppi buys the call with its own money, checks the answer, and only then charges the buyer. ?

1. BuyerAsked to buy one callvibesprings.net/api/price/btc-usd
2. TeppiQuoted the price plus a fee$0.002 to the seller + $0.001 fee = $0.003
3. BuyerSigned for the totalnothing moves yet
4. TeppiPaid the seller with its own money$0.002 on Base 0x06e676d1…1f4f2ce4 ↗
5. TeppiChecked the answeranswered · passsent something back · passmatches its schema · nothing to check
6. ChainCharged the buyer, only now$0.003 on Base 0xab994cd7…559eb8be ↗

The buyer pays USDC on Base, and Teppi pays the seller on Tempo in the token it asked for. ?

1. BuyerAsked to buy one calldeepseek.mpp.paywithlocus.com/deepseek/list-models
2. TeppiQuoted the price plus a fee$0.003 to the seller + $0.001 fee = $0.004
3. BuyerSigned for the totalnothing moves yet
4. TeppiPaid the seller with its own money$0.003 on Tempo 0x7b555e77…09dceb79 ↗
5. TeppiChecked the answeranswered · passsent something back · passmatches its schema · nothing to check
6. ChainCharged the buyer, only now$0.004 on Base 0xc9424bf9…156fb354 ↗

Some sellers pay the network fee themselves, so the wallet loses exactly the price. ?

1. BuyerAsked to buy one callstorage.mpp.tempo.xyz/
2. TeppiQuoted the price plus a fee$0.0001 to the seller + $0.001 fee = $0.0011
3. BuyerSigned for the totalnothing moves yet
4. TeppiPaid the seller with its own money$0.0001 on Tempo 0x67d85435…57eca856 ↗
5. TeppiChecked the answeranswered · passsent something back · passmatches its schema · nothing to check
6. ChainCharged the buyer, only now$0.0011 on Base 0x63840928…41477f25 ↗

Several calls bought as one: the buyer pays once, and only if every step passes. ?

1. BuyerAsked for a goal within a budgetgot a plan of 2 steps and a quote, for free
2. TeppiQuoted all steps plus one fee$0.004 to the sellers + $0.002 fee = $0.006
3. BuyerSigned once for the totalnothing moves yet
4. TeppiBought step 1apiacre.com/v1/web/metadata $0.002 on Base 0x32d28154…0961cca3 ↗
5. TeppiBought step 2minifetch.com/api/v1/x402/extract/url-metadata $0.002 on Base 0x90c6dcb1…7904d723 ↗
6. TeppiChecked every step2 of 2 passed
7. ChainCharged the buyer, only now$0.006 on Base 0xf460c4af…abbb9b84 ↗

One header puts a purchase in the record, where it can lower a grade but never raise it. ?

1. BuyerBought a call and asked to share itx-teppi-publish: transcript
2. TeppiPaid the sellervibesprings.net/api/price/btc-usd $0.002 Base · USDC 0x6f1a4620…6767cc16 ↗
3. TeppiChecked it, then charged the buyerthe order ord_01M3DX…5FX66E
4. RecordSaved it as a buyer's calldelivered sha256:1d59deac71…cba2c7
5. RecordCan only lower the gradenever counts toward a letter

Only a paid call can see the money leave with nothing coming back. ?

1. TeppiPaidx402.ottoai.services/rh-season · 31 paid calls
2. SellerKept the money, sent nothing30 of them, $0.03 in all
3. ChainShows the money moved$0.001 Base · USDC 0xb066adfb…a7532aa3 ↗
4. RecordMarks every onetook the money, returned nothing sha256:ab471a9d82…f27b68

When the answer fails its checks, the buyer pays nothing and gets an error saying why. ?

1. BuyerAsked to buy one callstorage.mpp.tempo.xyz/
2. TeppiQuoted the price plus a fee$0.0001 to the seller + $0.001 fee = $0.0011
3. BuyerSigned for the totalnothing moves yet
4. TeppiTried to pay the sellerthe seller took no payment on Tempo
5. TeppiChecked the answeranswered · fail: returned 500sent something back · passmatches its schema · nothing to check
6. BuyerWas not chargedany loss is Teppi's

When Teppi got it wrong, a correction is published beside the entry, which is never edited. ?

1. RecordKept the entry as writtenapi.onesource.io/api/chain/erc20-balance sha256:30e74ce062…8730af
2. TeppiSaid what it got wrongour_verdict the seller read the head, one block past both of our reads, and its answer matched that block
3. RecordLeft it out of later gradesthe entry and the correction both stay public