AssembledAPIintegration&MCPserver

Deliver real-time HR & Directory faster, close sales deals sooner, and scale without an integration backlog.

Add Assembled to your app See feature support

Try free for 30 days, no credit card required

Add Assembled and 76 other pre-built HR & Directory integrations

Real-time data to fuel countless HR use cases

Power AI copilots, insights, predictive analysis, and automation with a modern integration infrastructure that scales alongside you.

hris

Onboarding

Onboard employees and update profiles when roles change.

Learn More

hris

Offboarding

Seamlessly integrate employee data to automate the offboarding processess.

Learn More

hris

Track PTO

Pull time off (PTO) information to monitor and manage employee leave balances and schedules in real-time.

Learn More

Unified API data-models and methods

Hris Employee

list get

Hris Group

remove list

Hris Timeoff

list

Passthrough

get post put patch delete

29 Unified MCP tools

list all employees

list_hris_employees5 parameters

retrieve an employee

get_hris_employee2 parameters

list all groups

list_hris_groups3 parameters

remove a group

remove_hris_group2 parameters

list all timeoffs

list_hris_timeoffs4 parameters

get all people

external_get_people0 parameters

create a new person

external_create_people19 parameters

get a person by id

external_get_people2 parameters

update a person

external_update_people21 parameters

delete a person

external_delete_people2 parameters

get all roles

external_get_roles0 parameters

get agent states

external_get_state0 parameters

create agent state

external_create_state5 parameters

create bulk agent states

external_create_bulk0 parameters

get activities

external_get_activities0 parameters

create activity

external_create_activities6 parameters

delete activities

external_delete_activities0 parameters

create bulk activities

external_create_bulk0 parameters

get activity types

external_get_activity_types0 parameters

create activity type

external_create_activity_types4 parameters

delete activity type

external_delete_activity_types2 parameters

create bulk conversations

external_create_bulk0 parameters

update bulk conversations

external_update_bulk0 parameters

get forecasts

external_get_forecasts0 parameters

create time off request

external_create_time_off6 parameters

get time off requests

external_get_requests0 parameters

cancel time off request

external_create_cancel2 parameters

generate report

external_create_reports2 parameters

get report

external_get_reports2 parameters

The modern Unified API platform, built differently

Real-time, pass-through

Every request hits the source API live. No caching, no sync jobs, no stale data — just on-demand API reads/writes with native and virtual webhooks for instant updates.

Zero-storage by design

We never store end-customer data. Traffic is stateless and regionalized (US/EU/AU), reducing compliance scope and eliminating data-at-rest risk.

One API, deeply normalized

360+ integrations, 21 categories... Unified objects, endpoints, scopes, and errors—plus raw payload passthrough when you need provider-specific fields.

Custom fields & objects

Go beyond shallow schemas. We support custom fields and read/write on custom objects (e.g., Salesforce) via unified metadata APIs.

AI-ready integrations

Built for AI products: real-time streams for RAG/embeddings and Unified MCP tools that securely grant LLMs controlled integration access.

Predictable pricing, no lock-in

Transparent usage-based pricing that scales with API volume—not customers. Own your credentials and migrate anytime.

Add an Assembled integration to your application in hours

1Test drive integrations

Effortlessly test API calls, explore endpoints, and try out the Assembled integration using synthetic data in our Sandbox environment.

2Authorize connections

Drop in our Authorization component with a single line of code. Your users can then connect and grant access to their Assembled data.

3Start making API calls

Use the Connection ID to interact with Assembled via our unified API. We handle maintenance and updates so you can focus on your product.

Seamless Auth, no extra work

Unified.to removes the complexity of authentication and authorization so you can focus on building your product, not managing auth flows. Our pre-built UI and flexible API handle everything in the background—no extra setup required.

See documentation

React

React component React component source code

Trusted by global product companies and developers to power integrations for innovative AI and SaaS applications

5 stars on G2

Integrate with all the major hr & directory applications

Unified.to makes it possible to integrate once to a unified API to connect with all the applications your customers use, so you can train AI models, build advanced automation, and expand your market.

Start testing for free