5 Utility Endpoints Every AI Agent Needs: From Sentiment to Summarization

AI agents are incredibly powerful — but they're often bottlenecked by the same five utility tasks: understanding text sentiment, summarizing long documents, looking up domain info, checking public holidays, and querying DNS records. These are the "plumbing" tasks. Boring? Maybe. But without them, your agent can't answer half the real-world questions users throw at it. This post covers five endpoints we recently shipped on IteraTools that handle these tasks — all pay-per-use, no setup, available to any HTTP client. 1. POST /sentiment — Understand the emotional tone of text Before your agent acts on user feedback, it should know how the user feels. curl -X POST https://api.iteratools.com/sentiment \ -H "Authorization: Bearer YOUR_KEY" \ -H "Content-Type: application/json" \ -d '{"text": "I love this product, it works great!"}' Response: { "sentiment" : "positive" , "score" : 7 , "comparative" : 1.4 , "positive" : [ "love" , "great" ], "negative" : [], "language" : "en" } Uses AFINN-165 —