Directly addresses x402 settlement timing ('How long do x402 payments take to finalize?') with cross-protocol commentary. Already cached, so free. Complementary to Arc Benchmarks by providing broader settlement context. No past citation data, but strong topical fit.

Reputation 13/100 with 2 past citations. Article is about Visa DCAP network costs, not directly on x402/Arc settlement latency. Low relevance to question despite being cached. Skip to avoid redundancy and low expected value. — cached bytes are free, but this read does not clear the attention gate (EV 0.60, minimum 0.45, with a required claim target).

Primary source for this exact question: Arc Settlement Benchmarks has a direct article 'Measuring x402 settlement latency on Arc' with latency/finality data on Arc testnet. Already cached, so reuse free. High topical relevance and strong reputation (14/100) with 4 citations on this subject. Should directly answer the sub-claims.

Not cached, costs $0.002. About MUFG testing real-time blockchain settlement for JGBs—somewhat relevant to finality concepts but not x402/Arc-specific. Could provide comparative data, but budget is tight.

Reputation 23/100 with 9 past citations. Article on USDC instant settlement provides general finality context but not x402/Arc-specific. Already cached; may offer comparison points.

Not cached, costs $0.002. About Ethereum transaction signing safety, not Arc/x402 settlement latency. Moderate relevance at best. Reputation 15/100. Not worth buying under tight budget.

Cached but about Decta stablecoin treasury settlement, not x402/Arc latency. Low direct relevance. Reputation 17/100. Skip to save budget for more targeted sources.

Reputation 15/100 with 2 past citations. Covers distributed systems fundamentals like idempotency keys, which could relate to finality mechanisms, but is general not x402/Arc-specific. Already cached, but low direct relevance. — cached bytes are free, but this read does not clear the attention gate (EV 0.50, minimum 0.45, with a required claim target).

Cached. About Coinbase real-time reconciliation (2022 article), not directly x402/Arc. Could offer general distributed systems state sync context, but low direct relevance. — cached bytes are free, but this read does not clear the attention gate (EV 0.50, minimum 0.45, with a required claim target).

Reputation 26/100 with 6 past citations. Article explains x402 as an agent payment rail, which is foundational context for the question. Already cached, so free. Good supplementary source for understanding x402's design.

Not cached, costs $0.002. About Kalshi market data feed via DoubleZero, not settlement latency. Low relevance.

Not cached, costs $0.004. About low-risk DeFi on Ethereum, not Arc/x402 settlement. Some Ethereum relevance but not specific enough. Higher price, lower expected value.

Cached but about AI agent ontologies, not payments/settlement. No past citation data. Low relevance to x402 latency question.

Not cached, costs $0.003. About LLM tooling, completely off-topic for settlement latency. Skip.

Not cached, costs $0.003. About voice AI quality measurement, off-topic. Skip.

Gardening content completely off-topic for x402 settlement latency despite high past citation reputation (100/100). Cached but irrelevant to crypto/payments question.

Retro gaming hardware content off-topic for x402 settlement latency despite good past reputation (67/100). Cached but irrelevant.

Computer vision tutorial, off-topic. Skip.

Mystic/esoteric content, completely off-topic. Skip.