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What is Merge?

Merge is integration infrastructure that lets software companies add hundreds of customer-facing integrations through one unified API. It normalises data across categories such as HR and payroll, applicant tracking, CRM, accounting, ticketing and file storage, and handles authentication, data syncing, monitoring and compliance. More recent products extend this to AI use cases, with an Agent Handler for authenticated agent actions and a Gateway for routing model requests. It is aimed at product and engineering teams who want to build an integration once rather than maintain many bespoke connections.

Key Features

Unified API

One API and shared data model that maps to hundreds of underlying integrations across multiple software categories.

Linked Accounts

End-customer connections that can be authorised and managed, with a portion available on the free starting tier.

Data sync and webhooks

Configurable sync frequencies and event delivery to keep your application in step with connected systems.

Agent Handler

Lets AI agents take authenticated actions across connected enterprise tools through Merge.

Gateway

Routes language model requests across providers with fallback and cost handling.

Integration observability

Monitoring and logging for syncs, API calls and actions, with tiered log retention.

Security and compliance

SOC 2 Type II, ISO 27001, HIPAA and GDPR coverage, plus audit trail features on higher tiers.

Pros & Cons

Advantages

  • Build to a single unified API and data model instead of maintaining many separate integrations, which reduces ongoing engineering work.
  • Wide category coverage including HRIS, ATS, accounting, CRM, ticketing and file storage with 220+ integrations.
  • A genuinely usable free starting point with three production Linked Accounts before paid tiers begin.
  • Strong compliance posture with SOC 2 Type II, ISO 27001, HIPAA and GDPR, which helps when selling to enterprise buyers.
  • Newer Agent Handler and Gateway products extend the platform towards AI agent and model-routing use cases.

Limitations

  • Pricing scales quickly, with the Launch plan at $650 per month after the free accounts and extra charges per additional Linked Account.
  • Professional and Enterprise tiers are contract-based with no public pricing, so budgeting requires a sales conversation.
  • It is a developer-focused integration layer rather than a no-code tool, so engineering resources are needed to implement it.
  • Lower tiers have shorter log retention and tighter rate limits, which may constrain higher-volume use.

Use Cases

A SaaS company adds HR and payroll integrations to its product by building once against Merge rather than each HRIS separately.

A recruiting platform connects to applicant tracking systems such as Greenhouse and Ashby through a single API.

A fintech or accounting tool syncs data from QuickBooks, Xero and similar systems via the accounting category.

An engineering team centralises CRM data from Salesforce and HubSpot for a customer-facing feature.

A team building AI agents uses the Agent Handler to let agents take authenticated actions in connected tools.

A product team adds integration monitoring and logging to spot sync failures across customer accounts.