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Dev tools · alternatives · 2026

24 alternatives to J-sey Data API

Pay-per-call data API for AI agents, no subscriptions

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 2 we have checked on their own sites, 1 of them free or with a free tier.

  1. 1
    pay.sh▲346

    Discover, access, and pay for any API autonomously

    May 2026 · pay.sh · its alternatives →

  2. 2
    ExploreYC▲565

    Open-source API for Y Combinator & a16z company data

    Jul 2026 · exploreyc.com · its alternatives →

  3. 3

    Hi HN! We’re Abhilash Chowdhary, Chris Pisarski and Manmohit Grewal. We built Crustdata (YC F24). Today we’re launching our web search API for AI agents, which not only returns the most relevant documents from the web but also maps them to the correct entity (person, company or event). Demo video here https://youtu.be/IouWW97hBN8 If you run agents at scale, tokens become a line item. The web data is the worst input: long pages, repeated content, mixed entities, stale claims. The usual web search -> scrape -> summarize + structure forces the agent to spend tokens doing…

    2025 · crustdata.com · its alternatives →

  4. 4
    ZooData▲272

    The data layer for AI agents

    Jul 2026 · zoodata.ai · its alternatives →

  5. 5
    HasData▲430

    Get valuable data from any website without need for a proxy

    May 2026 · hasdata.com · its alternatives →

  6. 6

    I spent a few hours last weekend testing whether AI can replace code by executing directly. Built a contact manager where every HTTP request goes to an LLM with three tools: database (SQLite), webResponse (HTML/JSON/JS), and updateMemory (feedback). No routes, no controllers, no business logic. The AI designs schemas on first request, generates UIs from paths alone, and evolves based on natural language feedback. It works—forms submit, data persists, APIs return JSON—but it's catastrophically slow (30-60s per request), absurdly expensive ($0.05/request), and has zero UI…

    Nov 2025 · github.com · its alternatives →

  7. 7

    Data APIs for AI agents & developers — free to start

    Feb 2026 · apipick.com · its alternatives →

  8. 8

    Hey HN, we’re building an open specification that lets agents discover and invoke APIs with natural language, built on the OpenAPI standard. agents.json clearly defines the contract between LLMs and API as a standard that's open, observable, and replicable. Here’s a walkthrough of how it works: https://youtu.be/kby2Wdt2Dtk?si=59xGCDy48Zzwr7ND. There’s 2 parts to this: 1. An agents.json file describes how to link API calls together into outcome-based tools for LLMs. This file sits alongside an OpenAPI file. 2. The agents.json SDK loads agents.json files as tools for an LLM that…

    2025 · github.com · its alternatives →

  9. 9
    x402▲119

    Hi HN – excited to announce x402, initially developed by Coinbase (YC 12) x402 lets any HTTP API charge per request without issuing API keys or storing credit cards. Buyers (humans or AI agents) keep funds in their own wallet and dynamically discover compatible endpoints, call them as usual, and automatically pay a microtransaction in USDC or other tokens to settle. 90 second demo: https://www.youtube.com/watch?v=PV-L2AfLhJg Problem: Every time we want to use a new API we have to: find the service online create a developer account, copy a secret key into env vars, pre-fund or…

    2025 · x402.org · its alternatives →

  10. 10

    Sell your idle API quota. Buy any LLM for less.

    May 2026 · jellynet.net · its alternatives →

  11. 11

    AI-powered payments and conversational commerce

    Apr 2026 · payemoji.com · its alternatives →

  12. 12

    Price and discount optimization for subscription services

    2021 · corrily.com · its alternatives →

  13. 13
    Anakin▲148

    Every second thing I build needs to access the web, and I was frustrated with not finding something that just works all the time. With my team, we built this because I wanted to enable access to extremely difficult websites and apps for every AI agent. We have solved this cat-and-mouse problem with self-healing built in. It's one API to get data from hostile sites, and it can do easy sites too. You POST a URL and get back Markdown, JSON, HTML, a screenshot, or all of them. That same call handles anti-bot, proxy rotation, JS rendering, persistent authenticated sessions, and schema-based…

    2021 · anakin.io · its alternatives →

  14. 14

    Compression API that reduces prompt size by 40-60% before sending to your LLM. Your API key never leaves your environment.

    Feb 2026 · agentready.cloud · its alternatives →

  15. 15CR
  16. 16

    x402 API for US stock market data

    Jun 2026 · x402stock.xyz · its alternatives →

  17. 17

    Hey HN! Jaiqu is an AI agent for creating repeatable JSON transforms using jq query language syntax. Jaiqu translates complex JSON structures into repeatable jq queries. jq is a command line utility built for fast, reliable JSON queries. Jaiqu takes advantage of the LLMs for both constructing jq queries as well as using feedback to fix errors/invalid results if those queries are incorrect. Writing code to parse JSON is super annoying. It usually involves manually reading huge JSON balls, parsing the keys in a language of your choice, and pulling the data manually. Also, you're likely to…

    2024 · github.com · its alternatives →

  18. 18

    Scrape, Screenshot, and extract LLM-ready data

    Jan 2026 · geekflare.com · its alternatives →

  19. 19

    Hi guys, am building SecureLend.ai and when working on our underwriting agents (free trial, paid after) I had issues with seamless payment options. Of course I looked at x402 which I believe is a great protocol but not a fan of a) sharing private keys with the agent b) having a human in the loop or c) similar workaround e.g. pre-funded wallets So I started building out a solution. For my use case it was important to not only have stablecoins but also a fiat rail which is now implemented using Stripe. Initially I build a mandate system internally but am very glad and big shoutout to the guys…

    Apr 2026 · delegare.dev · its alternatives →

  20. 20

    Outcome Billing and Payments Infrastructure for AI Agents

    2023 · valmi.io · its alternatives →

  21. 21

    Pay-per-call federal data API — FDA, SEC, Treasury via x402

    Jun 2026 · its alternatives →

  22. 22

    ask an agent to buy something, and it hits a wall. Why?

    Mar 2026 · github.com · its alternatives →

  23. 23

    Monetize any API with pay-per-call payments

    Apr 2026 · mercury402.com · its alternatives →

  24. 24
    _donefrom $0.01/mo▲4

    Actions for AI. Real-world tasks your agent can't do alone. Pay per use with x402 - no accounts. no logins. no keys.

    Jun 2026 · underscoredone.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →