Breaking down: "Summarize the basics of the HTTP protocol."

Identified 1 research target(s) to investigate; these are not established facts

Deep mode: up to 4 paid/cached reads plus one bounded gap-expansion pass when needed.

Discovered 21 verified source(s)

Recalled 13 past runs on this subject — how these sources performed when they were available.

ERC-8004 reputation loaded — composite scores on this subject.

Claim-aware portfolio selected 1/1 positive proposal(s): 1 cached + 0 fresh, predicting 1/1 claim(s) above the evidence floor with $0.000000/$0.000500 fetch USDC reserved.

Free-preview pre-check maps an actionable source to every sub-claim (1/1); paid reading may proceed within the budget.

Agent spend wallet ready: 0x29028Fe1122E17Fe7863A22701e863FE4DaE1aFB (balance sufficient)

Reused cached Agent Economy Weekly — x402 turns HTTP 402 into an agent payment rail (free) — S1

Sub-claim "What are the basics of the HTTP protocol?": 10% covered by S1 — S1 only mentions the HTTP 402 'Payment Required' status code in the context of an agent payment rail. It provides topical context about one HTTP status code but does not explain the basics of HTTP (e.g., request/response model, methods, headers, statelessness, client-server communication). No requested basics are explicitly answered.

Coverage for the sole sub-claim is 0.1, below 0.5, but none of the skipped sources address the basics of the HTTP protocol; they concern stablecoins, micropayments, idempotency, gardening, retro hardware, crypto regulation, AI agents, and other unrelated topics. No affordable skipped source could fill the gap (remaining budget is only $0.0005, and no relevant source exists at any price). Therefore no purchase is recommended.

Final check — "What are the basics of the HTTP protocol?": 10% assessed by S1

Final coverage assessment — The only gathered source (S1) is an abstract about x402 and the HTTP 402 'Payment Required' status. It mentions one HTTP status code and a payment flow, but it does not summarize the basics of the HTTP protocol such as request/response model, methods, headers, statelessness, or general status code classes. Therefore the requested summary is not answered; the source provides only topical context. The assessment does not establish a complete supported answer for every requested part.

Synthesizing a grounded answer from 1 source(s)…

Relevance review returned; only checked excerpts can retain support, and review cannot raise it.

Below reward gate — S1 supports claim 1 at 20%: “x402 revives the dormant HTTP 402 'Payment Required' status as a real payment rail.”

Below reward gate — S1 supports claim 1 at 30%: “A server responds 402 with machine-readable payment requirements; the client signs a payment authorization and retries.”

Rejected 0 invalid evidence span(s) and 1 unsupported citation marker(s); rejected markers cannot receive citation rewards.

No citation passed the evidence gate — the $0.000500 citation pool stays unspent; settled access tolls still stand.

Drafted answer citing 0 source(s)

Confidence: Low — no citation passed the evidence gate.

Done. Spent $0 across 0 confirmed/simulated payment(s) to creators.