# Track your NFI Online cases from your own systems

> Read each case's Case Update page in NFI Online, with its status, DIP and offer, valuation and Case Requirements, through one API call. A workflow can check your open cases every weekday morning and tell you which requirements are newly Requested.

Page: https://fous.com/automate/nfi-online
Updated: 2026-11-12

Works with your own NFI Online account. Fous is an independent product.

## What you can build on NFI Online

### Get a case update

Opens a case from My Home and reads its Case Update page: the Application, DIP & Offer, Valuation and Solicitor tabs and the Case Requirements.

- Takes: Mortgage Application (M) number
- Returns: Status, application type, loan amount, purchase price or property value, LTV, submission date, completion date, COT status, DIP decision and offer, valuation dates, solicitor, case requirements

### List cases on My Home

Reads the list of existing cases on the My Home page that appears after you log in, with each case's current status.

- Takes: Status (optional)
- Returns: Mortgage Application (M) number, current status

### Get outstanding case requirements

Reads the Case Requirements section of a case's Case Update page: each document Nationwide has asked for, for which applicant, and its status.

- Takes: Mortgage Application (M) number
- Returns: Requirement, applicant, status such as Requested or Received

### Attach a requested document

Opens a case, selects Attach Documents, ticks the case requirement, uploads the file and presses Attach Document.

- Takes: Mortgage Application (M) number, case requirement, file (PDF, TIF or JPEG)
- Returns: Mortgage Application (M) number, requirement, attached file name, requirement status

## Automate NFI Online with a workflow

A [workflow](/product/workflows) runs your methods as one process, with nobody at the screen. A schedule or a call from your own system starts it, the steps run in order, and the result arrives in your inbox or in the systems you already use.

### Morning case status check across your pipeline

Starts: Every weekday at 8:00

1. List the cases on My Home.
2. For each case, get the case update.
3. Keep the cases whose status, offer or valuation changed since the last run.
4. Email you the list with each case's M number, status and what changed.

### Newly requested case requirements, to your CRM

Starts: Every weekday at 9:00

1. List the cases on My Home, then get the outstanding case requirements for each one.
2. Keep the requirements in Requested status that were not there on the last run.
3. Post each one, with its M number and applicant, to your CRM webhook.

### Mortgage offers issued, posted to your case system

Starts: Every weekday at 17:00

1. List the cases on My Home, then get the case update for each one.
2. Keep the cases with an offer on the DIP & Offer tab that was not there on the last run.
3. Post the M number, loan amount, LTV and offer details to your webhook.

You can run a workflow by hand on every plan, Free included. Schedules and webhook triggers come with the paid plans, from $29 a month.

## Once built, one call from your code

Once you have built a [method](/product/methods), it is one POST to /v1/runs from your backend, or a tool an AI agent calls over MCP. This is what “Get a case update” would look like.

Example request:

```
curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "nfionline.co.uk/get_case_update",
    "input": {
      "m_number": "M7300412"
    }
  }'
```

Example response:

```
{
  "status": "completed",
  "data": {
    "m_number": "M7300412",
    "application": {
      "status": "Application Submitted",
      "application_type": "New purchase",
      "loan_amount": 238500,
      "purchase_price": 318000,
      "ltv": 75,
      "submission_date": "2026-11-03",
      "completion_date": null,
      "cot_status": "Not received"
    },
    "valuation": {
      "instructed": "2026-11-03",
      "inspection": "2026-11-07",
      "report_received": null
    },
    "solicitor": "Globex Conveyancing LLP",
    "case_requirements": [
      {
        "requirement": "Proof of deposit",
        "applicant": "Sam Northwind",
        "status": "Requested"
      }
    ],
    "dip_decision": "Subjective Accept",
    "offer_issued": null
  }
}
```

An example with invented data, not a ready-made endpoint. The method exists in your organization once you build it, and its name, inputs and fields follow your request.

## NFI Online’s own options

Nationwide's mortgage API works inside third-party broker platforms. It creates Purchase and Remortgage DIPs, and through Acre and Smartr365 also the Full Mortgage Application, with exclusions such as Interest Only. Fees due are paid in NFI Online, and cases are tracked on its Case Update page.

| Option | What it covers | What it takes |
| --- | --- | --- |
| Nationwide's mortgage API, DIPs | Purchase and Remortgage DIPs from Twenty7tec, Iress Lender Connect, One Mortgage System and Mortgage Brain's Submissions Brain. | An account on one of those platforms. Not for Interest Only cases or porting for product reservation. The case then continues in NFI Online. |
| Nationwide's mortgage API, DIP and FMA | A DIP and the Full Mortgage Application for Purchase and Remortgage cases, submitted from Acre or Smartr365. | An account on Acre or Smartr365, with each platform's exclusions. Fees such as product or valuation fees are paid through NFI Online. |
| NFI Online by hand | Create Case, Mortgage Illustrations, DIPs, product reservation, the FMA, Amend Case, Attach Documents and case tracking. | A registration with Nationwide for Intermediaries, which creates your NFI Online login. |

Read on November 12, 2026: [Nationwide's mortgage API](https://www.nationwide-intermediary.co.uk/placing-business/api), [NFI Online](https://www.nationwide-intermediary.co.uk/placing-business/nfi-online), [NFI Online Quick Start Guide](https://www.nationwide-intermediary.co.uk/-/media/nfi/documents/f371-keying-guide.pdf).

## Signing in to NFI Online

NFI Online signs you in with your email address and password. After you register with Nationwide for Intermediaries, you receive emails to create the passwords for NFI Online and TMW Online. With Fous you sign in once through NFI Online's own sign-in with your own account: the login is sealed with AES-256, and an expired session is signed back in.

## Worth knowing

- **A case open elsewhere cannot be changed**: A case is not editable while someone else has it open in edit mode, or once the COT has been received. While a case is in Amend Case status, all processing is paused.
- **Administrators see only later cases**: An office administrator assigned to you under Manage my details sees the cases you submit after the link is made, not the cases you submitted before it.
- **Upload only what was requested**: Attach Documents takes PDF, TIF or JPEG files of no more than 9MB each. Nationwide asks you to upload only requested proofs, because extra documents can delay the application.
- **Each DIP leaves a credit footprint**: A DIP registers a soft footprint, and reprocessing within 90 days of the original decision leaves no new one. Submitting the FMA registers a hard footprint on the applicant's credit record.

## More in Finance: mortgage and title

- [AppraisalPort](https://fous.com/automate/appraisalport.md)
- [Mercury Network](https://fous.com/automate/mercury-network.md)
- [Uniform Collateral Data Portal](https://fous.com/automate/uniform-collateral-data-portal.md)
- [Desktop Underwriter](https://fous.com/automate/desktop-underwriter.md)
- [Loan Product Advisor](https://fous.com/automate/loan-product-advisor.md)
- [PEXA](https://fous.com/automate/pexa.md)
- [Simplifile](https://fous.com/automate/simplifile.md)
- [ApplyOnline](https://fous.com/automate/applyonline.md)
- [HM Land Registry portal](https://fous.com/automate/hm-land-registry-portal.md)
- [CommBroker](https://fous.com/automate/commbroker.md)
- [LMS Conveyancer Zone](https://fous.com/automate/lms-conveyancer-zone.md)
- [Barclays Mortgage Hub](https://fous.com/automate/barclays-mortgage-hub.md)
- [Halifax Intermediaries Online](https://fous.com/automate/halifax-intermediaries-online.md)
- [HSBC UK for Intermediaries](https://fous.com/automate/hsbc-uk-for-intermediaries.md)
- [NatWest Intermediary Solutions](https://fous.com/automate/natwest-intermediary-solutions.md)
- [Santander for Intermediaries](https://fous.com/automate/santander-for-intermediaries.md)
- [Filogix Expert](https://fous.com/automate/filogix-expert.md)
- [NMLS](https://fous.com/automate/nmls.md)
- [MERS Online](https://fous.com/automate/mers-online.md)
- [Teraview](https://fous.com/automate/teraview.md)
- [RP Data Professional](https://fous.com/automate/rp-data-professional.md)
- [AgentTRAX](https://fous.com/automate/agenttrax.md)
- [VA LGY Hub](https://fous.com/automate/va-lgy-hub.md)
- [UWM EASE](https://fous.com/automate/uwm-ease.md)
- [Encompass TPO Connect](https://fous.com/automate/encompass-tpo-connect.md)

Other industries: [USCIS online account](/automate/uscis-online-account), [Bonfire](/automate/bonfire), [myPATH](/automate/mypath), [Unemployment Services for Employers](/automate/unemployment-services-for-employers), [MSC Industrial Supply](/automate/msc-industrial-supply), [Workday VNDLY](/automate/workday-vndly).

## Frequently asked questions

### Does NFI Online have an API?

Not one you call from your own code. Nationwide's mortgage API creates Purchase and Remortgage DIPs inside third-party platforms such as Twenty7tec, Iress and One Mortgage System, and Acre and Smartr365 also submit the FMA. Fees and case tracking stay in NFI Online.

### Where do I see what Nationwide still needs for a case?

In the Case Requirements section of the case's Case Update page. It lists each document requested, the applicant it is for and its status, such as Requested or Received. Received documents appear under the Case Documents tab.

### Can my administrator see all of my NFI Online cases?

Only the cases you submit after you assign them. You assign an administrator under Manage my details, on the Relationships tab, with View my administrators, Assign and Update. Cases submitted before the link was created stay hidden from them.

### Why can't I change a case in NFI Online?

The case is not editable. Nationwide gives reasons such as someone else having it open in edit mode, the COT having been received, or some decline decisions. After full submission, Amend Case lets you change areas such as the loan amount, product and mortgage term.

### Is Fous affiliated with Nationwide Building Society?

No. Fous is an independent product. You use it with your own NFI Online account, and a method reads and does only what that account can.

Fous is an independent product: it is not affiliated with, endorsed by or sponsored by the operator of NFI Online (Nationwide Building Society). The name is used only to say which system this page is about. Something here wrong or out of date? Write to legal@fous.com.