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Yolodex

real-time customer enrichment API

Details

External ID
46034189
Source
HN
Company
—
Product
Yolodex
Website domain
yolodex.ai
Launched
Nov. 24, 2025
Cohort
—
Upvotes
37
Upvotes percentile
0.7849344978165939
Tags
—
Fetched at
Sept. 7, 2026, 9:25 p.m.
Updated at
Sept. 7, 2026, 9:25 p.m.

Description

hey hn, i’ve been working on an api to make it easy to know who your customers are, i would love your feedback.what it doessend an email address, the api returns a json profile built from public data, things like: name, country, age, occupation, company, social handles and interests.It’s a single endpoint (you can hit this endpoint without auth to get a demo of what it looks like): curl https://api.yolodex.ai/api/v1/email-enrichment \ --request POST \ --header 'Content-Type: application/json' \ --data '{"email": "[email protected]"}' everyone gets 100 free, pricing is per _enriched profile_: 1 email ~ $0.03, but if i don’t find anything i wont charge you.why i built it / what’s differenti once built open source intelligence tooling to investigate financial crime but for a recent project i needed to find out more about some customers, i tried apollo, clearbit, lusha, clay, etc but i found:1. outdated data - the data about was out-of-date and misleading, emails didn’t work, etc2. dubious data - i found lots of data like personal mobile numbers that i’m pretty sure no-one shared publicly or knowingly opted into being sold on3. aggressive pricing - monthly/annual commitments, large gaps between plans, pay the same for empty profiles4. painful setup - hard to find the right api, set it up, test it out etci used knowledge from criminal investigations to build an api that uses some of the same research patterns and entity resolution to find standardized information about people that is:1. real-time2. public info only (osint)3. transparent simple pricing4. 1 min to setupwhat i’d love feedback on* speed: are responses fast enough? would you trade-off speed for better data coverage?* coverage: which fields will you use (or others you need)?* pricing: is the pricing model sane?* use-cases: what you need this type data for (i.e. example use cases)?* accuracy: any examples where i got it badly wrong?happy to answer technical questions in the thread and give more free credits to help anyone test

Enrichment

Theme
generative AI model API gateways
Vertical
Fintech
Function
Data infrastructure
Audience
B2B
AI stance
Not AI
Project type
Commercial product
Normalized one-liner
real-time customer enrichment api
Manually corrected
False

Could you build this?

No A customer enrichment API requires access to massive, proprietary, multi-billion-record identity resolution graphs and cross-platform public data aggregations that cannot be vibe-coded.

What it would actually take: Building a real enrichment API requires multi-terabyte data pipelines ingesting public registers, social web dumps, breached databases, and B2B directories into distributed datastores (e.g., Snowflake, BigQuery, Elasticsearch). Identity resolution demands fuzzy matching algorithms, entity resolution models, and probabilistic linkage across fragmented identifiers (email hashes, handles, domains). The core barrier is multi-million dollar data licensing, scraping at immense scale, and strict compliance with GDPR/CCPA regulations.

Discussion

20 comments analyzed.

Competitors mentioned: Apollo API, SMTP verification services, Email verification libs

Concerns raised: Low precision and recall on data enrichment, Returns null values for most fields even on public email addresses, Accuracy issues (wrong country, wrong person identified), Too slow for production use, Coverage not near 100%

Feature requests: Email verification warning on signup form, Support querying by social media URL, Allow hashing email addresses to protect PII in transit, Improve performance speed

Competitors

Other products that read as similar to this one — 36 launches clear the similarity bar, closest 8 shown.

Attention rank: #6 of 37 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).

Launched 19 days after the earliest competitor.

Other launches for this product

Same idea, different domain

Nobody's really built a data infrastructure tool for Media & entertainment yet.