RapidAPI is a marketplace of 40,000 APIs. UnifAPI is 14 public-data platforms behind one key, one bill, $0.001 per record. When to pick which.

RapidAPI is a marketplace listing roughly 40,000 third-party APIs — each with its own request shape, auth scheme, billing tier, and reliability bar. UnifAPI is a curated gateway of 14 public-data platforms behind one API key, one bill, and a flat $0.001 per record returned. The choice between them comes down to whether you want raw breadth or a working agent stack.

What each one optimizes for

RapidAPI optimizes for catalog size. Anyone can list an API, and discovery is the product. If the long tail of niche APIs is what you need — a sneaker-resale price feed, a particular country's postal lookup — RapidAPI is unbeatable on coverage.

UnifAPI optimizes for agent ergonomics in one slice: public data from the open web. Social platforms, search engines, web scrape, news. We pick the upstream, normalize the response, and own the reliability so your agent code can stay short.

Pricing: tiered subscriptions vs. per-record

RapidAPI vendors typically use the freemium-tier ladder: a Basic plan with N free calls, then Pro / Ultra / Mega tiers with hard request caps and steep overage rates. Each API you adopt is a separate subscription, separate cap, separate invoice. The bill for an agent that touches five APIs is five subscriptions.

UnifAPI is flat $0.001 per record returned, across every endpoint in the catalog. 1,000 free records a month, no card required. One balance, one invoice, no caps. The bill for an agent that touches all 14 platforms is still one bill.

Request shape: inconsistent vs. normalized

On RapidAPI, the TikTok scraper from vendor A and the YouTube wrapper from vendor B look nothing alike. Parameter names differ, pagination styles differ, error envelopes differ, rate-limit headers differ. Your agent ends up shaped around the union of vendor quirks.

UnifAPI ships one envelope across every platform: cursor-based pagination, the same error shape, the same auth header, predictable JSON. Switching from Twitter to Reddit to Weibo is a path change, not a re-integration.

Reliability and SLOs

RapidAPI is a passthrough; the SLO of any given API is set by the vendor who listed it. Reliability varies wildly, and when an upstream breaks, you debug the vendor's code blind through the marketplace UI.

UnifAPI owns the upstream client. When TikTok or LinkedIn changes a field, we catch it in our reshape layer and ship a fix. You see one status page, not 14.

When RapidAPI is still the right call

If your agent needs an API outside the public-data slice — a private dataset, a niche industry feed, anything that's a one-off integration — RapidAPI's catalog will probably have something close. The DX cost is real, but the long-tail coverage is unmatched.

When UnifAPI is the right call

If your agent's value depends on the open web — social signal, search results, scraped pages, news — and you want one key, one bill, and one consistent shape across all of it, that's UnifAPI. Browse the live catalog at unifapi.com/apis or wire the MCP server into Claude / Cursor / Codex and start with $0.001 per record.