Content · the AI builds this agent for you
Fact-check an article claim by claim, with a source URL behind every fix.
Paste your draft. The agent breaks it into individual factual claims, verifies each claim by browsing the live web, and hands back a corrected article plus a fix ledger: what was wrong, what it now says, and the source that proves it. Sign up and the AI assembles this agent in your account, in about a minute.
Free plan · 500 monthly credits · no credit card · the AI assembles your agent right after signup
How it works
Sign up, and watch the AI build your agent.
No template to configure. This page carries a ready-made build request; the moment your account exists, Evaligo's AI starts assembling the agent in front of you.
Sign up free
Ten seconds. This page hands the AI a ready build request for this exact agent.
Watch it assemble
The AI builds the flow live: claim extractor, web-grounding verifier, and repair step. Edit anything.
Paste an article
Run it on any draft. You get the corrected text next to a ledger of every fix, each with its source.
What it produces
A wrong claim caught, corrected, and sourced
“Datadog, founded in 2015, went public two years later…”
“Datadog, founded in 2010, went public in 2019…”
- verdict: contradicted
- repair: dates replaced with sourced ones
- source: company history page (URL in ledger)
Claims checked in one run — 45 supported, 5 unsupported flagged for review, 1 contradicted and corrected. Each row of the ledger names the claim, the verdict, and the source URL.
from a real production run, July 2026
Quality is measured, not hoped for
AI judges grade every output, with reasons
Each judge is a plain-English goal. On every run it returns a 0–1 score and a written reason, per output. These are three of the judges your agent starts with — add or edit any of them by typing:
Every checkable factual statement in the article must appear in the ledger — dates, numbers, names, quotes. Skipped claims lower the score.
Each verdict must be backed by the cited source: the judge opens the URL and confirms it actually supports the supported/contradicted call.
Corrections change only what was wrong. Tone, structure, and every accurate sentence of the original must survive untouched.
This is the same judging system from our published experiment, where a 14-criteria panel compared three agent architectures. Read how the judges decided what we ship.
Before you start
Common questions
Do I need my own OpenAI or Anthropic keys?
No. The free plan includes 500 monthly credits that run on our keys. You can plug in your own keys later if you want.
Is the flow really built by AI? Can I change it?
Yes — this page hands Evaligo a build request, and the AI assembles the flow in your account. Everything it builds is editable: prompts, models, judges, structure.
What kind of content can it check?
Anything with verifiable claims: blog posts, comparison pages, newsletters, reports. Claims that cannot be verified on the web are flagged as unsupported rather than silently guessed.
Your agent, built in about a minute
Sign up free and the AI assembles this agent in your account — then point it at your products and run.
500 free monthly credits · edit anything the AI builds · no credit card