Text embeddings API for AI agents: OpenAI-compatible /v1/embeddings paid per request in USDC on Base — no account or API key. Embed documents for RAG, semantic search, clustering, deduplication with text-embedding-3-small or text-embedding-3-large. Embeddings are deterministic, so repeated texts hit our cache and bill at 55% of provider price — re-embedding a corpus costs roughly half. Misses at cost + 4%, from $0.001/call. Standard OpenAI POST format.

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