Mattermark

Company data, filterable and ready to act on.

APICapable readiness

About

What is Mattermark

Mattermark aggregates company data across firmographics, growth metrics, funding signals, and recent news, then makes it filterable and exportable for sales and investment workflows. It's built for SDRs, AEs, and founders at mid-market and enterprise companies who need to move from a target market definition to a qualified account list without manual research. The standout capability is growth signal monitoring — tracking company momentum over time so you can time outreach to accounts that are actually expanding, not just large. Data syncs natively into Salesforce and pushes to Excel and Google Sheets, and both REST and GraphQL APIs let teams pipe records into their own tooling. The honest limitation: contact-level data depth is thinner than dedicated contact databases, so you'll likely need a separate tool for verified emails and direct-dial numbers.

Data & Discovery

Capabilities

Key features

Prospecting database

searchable B2B contact + company directory

Native CRM integration

first-party connectors, no middleware required

Data

intent signals, real-time enrichment, firmographic + tech-stack data

Our verdict

Vanderbuild take

Mattermark sits squarely in the prospecting database and data enrichment layer — it's a solid account-sourcing tool for AEs and founders who need to filter a large universe of companies down to a workable list using growth signals and firmographic data, not just static firmographics alone. On the agentic readiness front, MCP status is unconfirmed, but the REST and GraphQL APIs are real — you can wrap Mattermark into your own orchestration layer or MCP setup without much friction, making it a viable data source for agent-driven prospecting workflows. Budget-tier 3 means this isn't a casual purchase: the Standard tier starts at $49/user/month, but the Professional tier jumps to $500/user/month on an annual contract, so you'll want a clear use case before committing. The core limitation to flag is contact depth — Mattermark is strong on company-level intelligence but won't replace a dedicated contact database for verified emails or direct dials, so plan for a two-tool stack if outbound sequencing is the end goal.

Mateusz Sekta

Founder, vanderbuild

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

Data source · Enricher · Signal source

Where this tool slots into an agentic pipeline.

Plays the role of Data source + Enricher + Signal source in an agentic pipeline. Use it to source contacts, companies, and the raw inputs an agent needs to act; add firmographic, technographic, and signal data to a lead row on the fly.

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