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Winmo

Find media buyers, close faster

Data & Discovery
For AI agents
APILimited readiness
About

What is Winmo

Winmo pulls together verified contact details, firmographic data, and ad spending signals to help sales teams build targeted lead lists inside the media, agency, and adtech space. It's built for SDRs, AEs, and GTM leads at mid-market and enterprise companies who sell to advertisers, agencies, publishers, or sponsorship buyers. The standout capability is its ability to forecast agency reviews and campaign launches before they happen — giving reps a window to get in front of buyers at the right moment rather than after a decision is made. Integrations with SEMRush and MediaRadar extend its data surface, though the platform's depth is concentrated in the US and UK media markets, which means teams prospecting outside those geographies will find coverage thinner.

Data & Discovery
Capabilities

Key features

Prospecting database

searchable B2B contact + company directory

Data

verified emails, intent signals, firmographic + tech-stack data

Our verdict

Vanderbuild take

Winmo is a focused prospecting database for SDRs, AEs, and GTM leads who sell into the media and advertising ecosystem — if your ICP lives outside ad agencies, publishers, and adtech, this tool is not built for you. On the agentic readiness front, an API exists but readiness is limited — you can pull data programmatically, but don't expect to wire this cleanly into an MCP orchestration layer or autonomous outbound agent without hitting enterprise gating and integration friction. Pricing is custom and enterprise-tiered, so expect procurement involvement and a real negotiation before you see a number. The honest limitation is scope: Winmo's signal depth is genuinely strong inside the US and UK media buying world, but teams with broader or non-media ICPs will find the database coverage drops off fast.

Mateusz Sekta
Founder, vanderbuild
Learn more

Our Resources

The wedge

Agentic stack profile

API
REST

Programmatic access available.

REST API — straightforward to call from any agent or workflow tool. Rate limits and auth vary by plan.

API docs →
Agentic readiness
Limited

Usable but with caveats — rate limits, brittle endpoints.

API exists but is rate-limited, brittle, undocumented, or hidden behind enterprise plans. Use with caution in production agent workflows.

Stack role
Data source · Signal source · Researcher

Where this tool slots into an agentic pipeline.

Plays the role of Data source + Signal source + Researcher in an agentic pipeline. Use it to source contacts, companies, and the raw inputs an agent needs to act; surface buying intent — funding, hiring, job changes, web visits.

Compare

Winmo alternatives

Tools that solve a similar problem — compared at a glance.

Winmo(this tool)
Pricing
Custom
Budget
$$$$
Best for
SDR / BDR, Account Executive
Readiness
Limited
API
REST
BookYourData
Pricing
Freemium
Budget
$
Best for
SDR / BDR, Founder
Readiness
Limited
API
REST
Apollo
Pricing
Freemium
Budget
$$
Best for
SDR / BDR, Account Executive
Readiness
Native
MCP
Yes
API
REST
Answers

Frequently asked questions

Does Winmo have a public API?

Yes — Winmo ships a REST API. Docs: https://www.winmo.com/winmostream-api/. Note the API is rate-limited or enterprise-gated, so plan integrations accordingly.

How much does Winmo cost?

Winmo: pricing is custom, expect enterprise tier ($$$$) spend. Full pricing page: https://www.winmo.com/packages/.

Who is Winmo best for?

Winmo is built for SDR / BDR, Account Executive, GTM Lead. Fits Enterprise, Mid-market (50-500)-sized teams.

How well does Winmo fit an agentic sales stack?

Tier: Limited. An API exists but it's rate-limited, brittle, or enterprise-gated. Plan integrations carefully.