Pricing

Pay per usage

Open Source Maintainer Leads: npm & PyPI

Search npm and PyPI by keyword and turn packages into B2B leads: the maintainer's public email, repository, homepage, monthly downloads, and last publish date. One lead per package. Keyless registries, no API key.

Pricing

Pay per usage

Rating

0.0

(0)

Developer

Ken M

Actor stats

Bookmarked

Total users

Monthly active users

2 days ago

Last modified

Who buys this

Developer-tool SaaS (CI/CD, testing, monitoring) selling to package authors.
Supply-chain security vendors (SCA, dependency scanning) whose top targets are maintainers.
DevRel and community teams running outreach and partner programs.
Technical recruiters sourcing active open-source contributors.

How it works

For each keyword it searches npm (full keyword search) and name-matches the PyPI index, prioritising exact and prefix matches.
For each package it reads the registry record for the maintainer/author public email, repository, homepage, and downloads.
Each package is scored and tiered, then pushed as one lead.

Output

One row per package:

{
  "registry": "npm",
  "name": "express",
  "url": "https://www.npmjs.com/package/express",
  "description": "Fast, unopinionated, minimalist web framework",
  "author": "TJ Holowaychuk",
  "email": "tj@vision-media.ca",
  "emails": ["tj@vision-media.ca", "wes@wesleytodd.com"],
  "maintainers": ["wesleytodd", "jonchurch"],
  "repository": "https://github.com/expressjs/express",
  "homepage": "https://expressjs.com/",
  "monthlyDownloads": 456438953,
  "lastPublished": "2026-05-10T12:00:00.000Z",
  "tier": "qualified_lead",
  "leadScore": 94
}

Tiers and pricing

Pay per lead. The first 10 qualified_lead per run are free so you can validate output.

Tier	Meaning	Price
`listing`	Package data, no public email or repository	$0.01
`lead`	A public maintainer email or a repository link	$0.02
`qualified_lead`	A public email and monthly downloads at or above the bar	$0.05

Both registries are keyless JSON APIs, so runs are fast and cheap, and a single run can return thousands of leads.

Input

Field	Default	Notes
`keywords`	`[]`	Search terms, one query each.
`registries`	`both`	npm + PyPI, npm only, or PyPI only.
`maxLeads`	`200`	Cap total leads per run.
`maxPerKeyword`	`80`	Candidate packages per keyword per registry.
`minMonthlyDownloads`	`0`	Drop packages below this download count.
`qualifiedMinDownloads`	`1000`	Download bar for the qualified_lead tier.
`requireEmail`	`false`	Only keep packages with a public email.

Notes

npm publishes author and maintainer emails in the package record; some maintainers use a noreply address, which is filtered out.
PyPI keyword search is not available programmatically, so PyPI is discovered by name-matching the official package index (exact and prefix matches first).
Respect each registry's terms and applicable outreach laws when contacting maintainers.

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