
AgentGatePay
x402
Real-world tasks your agent can't do alone.

JSONFormatter.org
JSON Formatter & Validator
JSON Editor Online
FreeFormatter
Code Beautify JSON Validator
CodeBeautify
DevToys
JSON Lint is a web based validator and reformatter for JSON, a lightweight data-interchange format.

Which is more popular?
Based on our record, JSONLint seems to be a lot more popular than Underscore Done. While we know about 138 links to JSONLint, we've tracked only 1 mention of Underscore Done.
Website, pricing, platforms and company facts side by side.
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| Website | underscoredone.com | jsonlint.com |
| Pricing | — | |
| Company | Startup from the United States · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Underscore Done (_done) is a suite of pay-per-call utility APIs built for AI agents. No API keys, no subscriptions - agents pay per request with USDC via the x402 protocol
No description of JSONLint yet.
What each product offers, as listed by its team.


No features have been listed yet.
Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of Underscore Done yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Underscore Done and JSONLint.
Underscore Done's answer
We provide data and actions that AI cannot achieve.
Also we don't require accounts, registration, api keys. And we charge per usage and never charge monthly subscriptions.
Underscore Done's answer
Ai Agents that work on behalf of people.
Share your experience with using Underscore Done and JSONLint. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


_done is a catalog of small, pay-per-call utility APIs aimed at AI agents: things like DNS and WHOIS lookups, screenshots, OCR, hashing, QR codes, and SEO extraction. Every call costs one cent in USDC over x402. There's no account and no... - Source: dev.to / 10 days ago
I've been maintaining jsonlint.com for years. It's a simple JSON validator that I enjoy hacking on every now and then. Nothing fancy, just a useful tool that developers seem to appreciate. - Source: dev.to / 8 months ago
Note: It is crucial that your batchinput.jsonl file is correctly formatted. You can use online JSON formatters and validators like jsonformatter.org or jsonlint.com to verify its integrity before proceeding. - Source: dev.to / about 1 year ago
Online Tools: Websites like JSONLint or jsonformatter.org let you paste JSON and get a minified version instantly. - Source: dev.to / about 1 year ago
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Online JSON Formatter and JSON Validator will format JSON data, and helps to validate, convert JSON to XML, JSON to CSV. Save and Share JSON
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The JSON Formatter was created to help with debugging.
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