What is x402 in one sentence? — Keryx Dispatch

Archived dispatch

What is x402 in one sentence?

Moderateconfidence— 1 source cited

7/13/2026, 3:09:21 PM · llm:deepseek:deepseek-chat

The dispatch, itemised.

§ IThe decision$0.006 / $0.012

50%$0.006 under cap

Decompose

Breaking down: "What is x402 in one sentence?"

Decompose

Identified 1 sub-claim(s) to support

Discover

Discovered 20 verified source(s)

Discover

Loaded query memory: 20 known sources from past runs.

Discover

ERC-8004 reputation loaded — composite scores from past queries.

DecideCACHE

Web Payments Review$0.002 · EV 50%

Moderate reputation (7/100) and hit rate (62%). Cached, free. Preview directly asks 'How long do x402 payments take to finalize?' Highly relevant.

DecideCACHE

Arc Settlement Benchmarks$0.003 · EV 60%

High reputation (14/100) and hit rate (76%). Cached, free. Preview directly mentions x402 settlement latency. Highly relevant.

DecideCACHE

Agent Economy Weekly$0.004 · EV 70%

High reputation (16/100) and hit rate (80%). Cached, free. Preview directly defines x402 as 'HTTP 402 into an agent payment rail'. Highly relevant to the question.

DecideCACHE

Stripe Blog$0.002 · EV 30%

Low reputation (not in top 8) and hit rate (24%). Cached, free. Preview mentions agent integrations but not x402 directly. Some relevance.

DecideCACHE

Stablecoin Ledger$0.003 · EV 40%

High reputation (16/100) and hit rate (82%). Cached, free. Stablecoins are relevant to x402 as a payment rail, but the preview focuses on USDC settlement, not directly on x402 definition.

DecideCACHE

Onchain Micropayments Digest$0.005 · EV 50%

Highest reputation (22/100) and hit rate (86%). Cached, free. Relevant to micropayments which are core to x402, but preview does not explicitly define x402.

DecideCACHE

Latent.Space$0.004 · EV 30%

Not in historical top 8, but tags include AI agents. Cached, free. Preview does not mention x402, but could have relevant context. Moderate value.

DecideSKIP

Ethereum Foundation Blog$0.002 · EV 10%

Low reputation (4/100) and hit rate (32%). Preview about transaction approvals, not x402. Tangential at best.

DecideSKIP

Vitalik Buterin's website$0.004 · EV 20%

Not in historical top 8. Preview topics (formal verification, LLM setup) not directly about x402. Could be tangentially relevant but not worth budget.

DecideSKIP

The Coinbase Blog - Medium$0.003 · EV 15%

Not in historical top 8. Preview about regulatory news, not x402. Low relevance.

DecideSKIP

Decrypt$0.002 · EV 10%

Not in historical top 8. Preview about AI and crypto news, no x402. Low relevance.

DecideSKIP

CoinDesk: Bitcoin, Ethereum, Crypto News and Price Data$0.002 · EV 10%

Low reputation (not in top 8) and hit rate (20%). Preview about bitcoin miners, not x402. Low relevance.

DecideSKIP

Distributed Systems Notes$0.003 · EV 10%

Low reputation (4/100) and hit rate (40%). Preview on idempotency is tangentially relevant but not directly about x402. Not worth budget.

DecideSKIP

Simon Willison's Weblog$0.003 · EV 10%

Not in historical top 8. Preview shows unrelated quotes and tool updates. Low relevance to x402.

DecideSKIP

Hugging Face - Blog$0.003 · EV 10%

Low reputation (3/100) and hit rate (14%). Preview about ML evaluation, not x402. Low relevance.

DecideSKIP

Cointelegraph.com News$0.002 · EV 5%

Low reputation (not in top 8) and hit rate (20%). Preview is general crypto news, no x402 mention. Not worth budget.

DecideSKIP

Garden & Soil Monthly$0.002 · EV 0%

Completely off-topic (gardening). No relevance to x402.

DecideSKIP

Retro Game Hardware$0.002 · EV 0%

Off-topic (retro gaming hardware). No relevance to x402.

DecideSKIP

Inner Axiom — The Codex$0.002 · EV 0%

Off-topic (esoteric/mystic). No relevance to x402.

DecideSKIP

Conzit Labs$0.002 · EV 0%

Off-topic (tech reviews, lifestyle). No relevance to x402.

Fetch

Agent spend wallet ready: 0x29028Fe1122E17Fe7863A22701e863FE4DaE1aFB (balance sufficient)

Fetch

Reused cached Web Payments Review (free) — S1

Fetch

Reused cached Arc Settlement Benchmarks (free) — S2

Fetch

Reused cached Agent Economy Weekly (free) — S3

Fetch

Reused cached Stripe Blog (free) — S4

Fetch

Reused cached Stablecoin Ledger (free) — S5

Fetch

Reused cached Onchain Micropayments Digest (free) — S6

Fetch

Reused cached Latent.Space (free) — S7

Re-evaluate

Sub-claim "x402 is a proposed standard for decentralized identity and a…": 20% covered by S3 — S3 describes x402 as a payment rail using HTTP 402, but does not mention decentralized identity or access management. Other sources discuss payments, settlement, and agents, but none support the claim that x402 is a standard for decentralized identity and access management.

Re-evaluate

Coverage for the claim is very low (0.2). The claim is about decentralized identity and access management, but gathered sources focus on payments. Skipped sources like Ethereum Foundation Blog, Vitalik Buterin's website, and Coinbase Blog may discuss decentralized identity standards. Their total price (0.002+0.004+0.003=0.009) exceeds remaining budget (0.006), so only the first two (0.002+0.004=0.006) fit. Recommend buying Ethereum Foundation Blog and Vitalik Buterin's website.

Re-evaluate

Filling gap — buying Ethereum Foundation Blog ($0.002)…

Re-evaluate

Paid $0.002 to Ethereum Foundation Blog (settled 765972f6-9…) — S8

Re-evaluate

Filling gap — buying Vitalik Buterin's website ($0.004)…

Re-evaluate

Paid $0.004 to Vitalik Buterin's website (settled 2a829dad-d…) — S9

Synthesize

Synthesizing a grounded answer from 9 source(s)…

Synthesize

Drafted answer citing 1 source(s)

Verdict

Confidence: Moderate — 1 source cited.

Attribute

Agent Economy Weekly contributed 100% → reward $0.006

Settle

Settled $0.006 citation reward → Agent Economy Weekly (a730ca04-f…)

Done

Done. Spent $0.012 across 3 payment(s) to creators.

§ IIIThe settlementweighted · USDC on Arc

100%

Agent Economy Weekly

batched

100%$0.006

Settled · USDC on Arc ↗$0.006

§ IIThe reading1 cited

Moderateconfidence— 1 source citeddeep research

x402 is a protocol that revives the HTTP 402 status code as a payment rail, enabling agents to pay per request without accounts or API keys .

Footnotes — each one pays its author

3Agent Economy Weekly100%+$0.006

Helpful?

Spent$0.012

To creators100%

Decisions0 bought · 7 cached · 13 skipped

llm:deepseek:deepseek-chat

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