vanderbuild
Get in touch
← All tools

Upcell

One extension, many data sources.

Data & Discovery
For AI agents
APICapable readiness
About

What is Upcell

Upcell is a Chrome extension that aggregates contact data from multiple providers, enriches it with verified mobile numbers and business emails, and syncs the results directly to Salesforce, HubSpot, Outreach, or Salesloft in one click. It's built for SDRs and BDRs who need reliable contact coverage without toggling between tools, and for RevOps teams who want to standardize how data flows across the prospecting stack. The standout capability is provider-level visibility — Upcell surfaces performance data across your data vendors so RevOps can see which sources are actually delivering and adjust accordingly. It also surfaces buying intent and engagement signals to help reps prioritize outreach. That said, teams looking for a full outbound sequencing or campaign execution layer won't find it here — Upcell enriches and routes data, but relies on connected SEPs to do the sending.

Data & Discovery
Capabilities

Key features

Data enrichment

fills records with firmographic, technographic, or signal data

Native CRM integration

first-party connectors, no middleware required

Data

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

Also ships

Chrome extension

Our verdict

Vanderbuild take

Upcell sits squarely in the data enrichment and intent signals layer — it's a practical choice for SDR/BDR teams and RevOps leads at growth-stage companies who are tired of managing three separate data vendor contracts and reconciling coverage gaps manually. On the agentic readiness front, the API is available and the architecture is clean enough that you can wrap it into your own MCP layer or orchestration workflow without too much friction — it's not a native MCP server yet, but it's callable. Pricing isn't publicly listed, so you'll need to go through a sales conversation before you can model it into a budget — that's a friction point for smaller teams doing quick stack evaluations. The honest limitation: Upcell doesn't replace your SEP or do any sending itself, so it only delivers value if you already have Outreach, Salesloft, or a comparable tool downstream — it's a data pipe, not a full prospecting motion.

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
Capable

Solid API access — wraps cleanly for agent use.

Solid REST or SDK access. No MCP server yet, but easy to wrap in custom agent tooling. Most modern SaaS tools land here.

Stack role
Enricher · Signal source · Verifier

Where this tool slots into an agentic pipeline.

Plays the role of Enricher + Signal source + Verifier in an agentic pipeline. Use it to add firmographic, technographic, and signal data to a lead row on the fly; surface buying intent — funding, hiring, job changes, web visits.

Compare

Upcell alternatives

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

Upcell(this tool)
Best for
SDR / BDR, RevOps
Readiness
Capable
API
REST
Clay
Pricing
Freemium
Budget
$$$
Best for
RevOps, GTM Engineer
Readiness
Native
MCP
Yes
API
REST
Clearbit
Best for
SDR / BDR, RevOps
Readiness
Capable
API
REST
Answers

Frequently asked questions

Does Upcell have a public API?

Yes — Upcell ships a REST API. Docs: https://api.upcell.io/.

Who is Upcell best for?

Upcell is built for SDR / BDR, RevOps, GTM Lead. Fits SMB (1-50), Mid-market (50-500)-sized teams.

How well does Upcell fit an agentic sales stack?

Tier: Capable. Solid public API, no MCP yet — straightforward to wrap in your own agent tooling.