ai.usmercari.com

Overview

BLOCKAPI (ai.usmercari.com) is an anonymous New API relay that came online around 2026-06-12. It grants about 5,000,000 quota (~$10) on signup and has daily check-in enabled. Its core business is day/week/month-card subscriptions for models like Claude Opus/Sonnet/Haiku and GPT-5.5. The domain piggybacks on the Japanese second-hand marketplace Mercari, and there is no independent community reputation anywhere.

Free quota

About 5,000,000 quota on signup (~$10 at quota_per_unit=500000); daily check-in is enabled (checkin_enabled=true). But top models have high multipliers (Claude Opus 2.5x, claude-3-5-haiku as high as 37.5x, gpt-5.5 3x), so the usable value of the granted quota is limited, and the site mainly relies on paid day/week/month-card and enterprise-channel subscriptions.

Free models

Pros

• Grants ~$10 worth of quota on signup and enables daily check-in, letting newcomers do small zero-cost trials
• Offers relatively new models: Claude Opus 4.5/4.6/4.7/4.8, Claude Sonnet 4.5/4.6, GPT-5.5
• Built on the mature New API panel, compatible with mainstream clients (Cherry Studio, CC Switch, LobeChat)

Cons

• Only came online around 2026-06-12; extremely short operating history, stability and longevity entirely unproven
• Fully anonymous operator, contactable only via a QR code, with no entity/registration info
• The domain (usmercari.com) piggybacks on the Japanese marketplace Mercari, which is misleading and raises trust concerns
• Top models have high multipliers (haiku 37.5x, opus 2.5x), so the nominal $10 grant does not go far
• Core business is paid day/week/month-card and enterprise-channel subscriptions; essentially a paid commercial site
• Searching 'usmercari'/'BLOCKAPI' only returns the official Mercari and unrelated content; no independent community discussion
• Common relay issues: suspected stolen/shared upstream keys, possible sudden exit-scam, rate limiting, conversation data in plaintext through a third party

Risk flags

• Extremely short operating history (start_time≈2026-06-12); high exit-scam risk for a new site
• Fully anonymous operator, contactable only via QR code, with no entity/registration info
• Domain usmercari.com piggybacks on the Japanese marketplace Mercari; possible brand impersonation/misleading
• Abnormally high multipliers on top models (claude-3-5-haiku 37.5x, opus 2.5x) dilute the usable value of the granted quota
• Core business is paid day/week/month-card and enterprise-channel subscriptions; 'free' is just an acquisition hook
• No independent community reputation anywhere; trustworthiness cannot be verified
• Common relay risks: suspected stolen/shared upstream keys, possible sudden rate-limiting or shutdown, conversation data in plaintext through a third party

Community reputation

No independent community reputation anywhere: searching 'usmercari'/'BLOCKAPI' only hits the official Japanese marketplace Mercari and unrelated content, and V2EX, Linux.do, NodeSeek, Zhihu, and Reddit have no discussion of this site. It came online around 2026-06-12, the operator is anonymous, the domain deliberately piggybacks on the Mercari brand, and the only information comes from its own /api/status and /api/pricing. Given the industry's widespread problems, it is assessed strictly as an anonymous new site.

Recommendation

As an anonymous new site whose domain piggybacks on a well-known brand and whose core business is paid subscriptions, it is not recommended as a trustworthy free source. For curiosity only, use the granted quota for small-scale trials, do not top up or buy cards, do not submit sensitive code or private data, and be ready for it to shut down at any time.

Latest probe

Mentions (5)

Sources

• ai.usmercari.com /api/status (site public config)
• ai.usmercari.com /api/pricing (model list & multipliers)
• Mercari (Wikipedia, the brand the domain piggybacks on)
• 知乎：揭秘中转站——45%假模型、投毒、偷币 (industry risk context)

Community discussion · reputation check

Want to verify ai.usmercari.com's real reputation before deciding? Read first-hand community discussion:

• Search “ai.usmercari.com” discussion on Reddit ↗
• Search “ai.usmercari.com safe scam” on Google ↗

External discussion quality varies; judge together with the risk review on this page.

FAQ

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