# Check ILSmart part availability through an API

> Read a part's listing counts, MRO / repair capability, condition codes, alternate part numbers and NSNs on ILSmart from your code. A workflow can run your watch list of part numbers every Monday and email you the parts whose listing counts moved.

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

Works with your own ILSmart account. Fous is an independent product.

## What you can build on ILS

### Get a part's listing summary

Searches one part number on ILS and reads its descriptions, manufacturers, condition codes and counts of availability listings, MRO / repair capability and PMA sources.

- Takes: Part number
- Returns: Part number, descriptions, manufacturers, ATA chapter, condition codes, counts of availability listings, MRO capability, PMA sources, MCRL references, Airworthiness Directives, Message Broadcasts

### Get alternate part numbers and NSNs

Reads the alternate part numbers sellers list a part under, and the NSNs linked to it, so your checks can include each equivalent.

- Takes: Part number
- Returns: Part number, alternate part numbers, NSNs, manufacturers

### Check your RFQ Recipient addresses

Opens My ILS, Set Preferences, then Company Profile, and reads the email addresses in the RFQ Recipient and MRO RFQ Recipient tiles.

- Takes: Nothing
- Returns: RFQ Recipient addresses, MRO RFQ Recipient addresses

### Send an RFQ to selected vendors

Searches a part number and sends an RFQ for it to the vendors you pick from the results.

- Takes: Part number, quantity, condition code, vendors
- Returns: Part number, quantity, condition code, vendors sent to, sent at

## Automate ILS 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.

### Weekly availability check of your part watch list

Starts: Every Monday at 7:00

1. For each part number on your list, get its listing summary on ILS.
2. Keep the parts whose availability listings or MRO capability count changed since the last run.
3. Email you the list with part number, condition codes and the old and new counts.

### Shortage parts, checked when your ERP flags them

Starts: When your system calls the workflow's webhook with a list of part numbers

1. For each part number, get its listing summary on ILS.
2. Get its alternate part numbers and NSNs.
3. Post part number, availability listings, condition codes and alternates to your ERP's webhook.

### RFQ Recipient addresses, checked every week

Starts: Every Friday at 16:00

1. Read the RFQ Recipient and MRO RFQ Recipient tiles in Company Profile.
2. Stop when nothing changed since the last run.
3. Email you the old and new addresses.

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 part's listing summary” 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": "marketplace.ilsmart.com/get_part_listing_summary",
    "input": {
      "part_number": "AC-4471-02"
    }
  }'
```

Example response:

```
{
  "status": "completed",
  "data": {
    "part_number": "AC-4471-02",
    "descriptions": [
      "Actuator"
    ],
    "manufacturers": [
      "Acme Aerospace"
    ],
    "ata_chapter": "Landing Gear",
    "condition_codes": [
      "NE"
    ],
    "parts_availability_listings": 42,
    "mro_repair_capability": 5,
    "mcrl_references": 18,
    "pma_sources": 2,
    "airworthiness_directives": 0,
    "message_broadcasts": 1
  }
}
```

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.

## ILS’s own options

ILS offers Web Services in XML and JSON for part searches, reviewing RFQs and updating your inventory listings from your own system, in bundles for buyers, sellers, MROs and government. ILS Bridge connects Quantum Control, CORRIDOR, Pentagon and CAMP IMS to the marketplace. Prices are not published: you arrange both with ILS.

| Option | What it covers | What it takes |
| --- | --- | --- |
| ILS Web Services | Part searches, RFQ review and inventory listing updates, machine to machine in XML or JSON. | A bundle arranged with ILS for buyers, sellers, MROs or government. No published price. |
| ILS Bridge | Auto-posting selected inventory and stock lines, and issuing RFQs and purchase orders from your ERP to ILS vendors. | Quantum Control, CORRIDOR, Pentagon or CAMP IMS, and a request to ILS. |
| ILSmart by hand | Part search, RFQs, listings and Company Profile settings. | An ILS User ID and password. ILS offers a free 14-day trial. |

Read on November 12, 2026: [ILS Integration](https://www.ilsmart.com/ils-bridge-integration-with-salesforce-sap-oracle-and-more).

## Signing in to ILS

ILS signs people in at marketplace.ilsmart.com with an ILS User ID and password. A company's root User ID is shown under My ILS, Set Preferences, on the User tab, and defense and government users request their User ID from ILS. With Fous you sign in once with your own account, the login is sealed with AES-256, and code and AI agents never see it.

## Worth knowing

- **Listing files are loaded on business days**: Uploaded listings are processed during ILS business hours, US Central time, Monday to Friday, not on US holidays, and can take up to 24 hours to show on ILSmart.
- **RFQs arrive by email**: ILS emails RFQs to the addresses in the RFQ Recipient and MRO RFQ Recipient tiles of Company Profile, so a changed address quietly sends buyers' RFQs elsewhere.
- **Search alternates, not just one number**: Sellers list the same part under alternate part numbers and NSNs. A check that reads only one part number can miss listings that sit under an equivalent.
- **Partner listings may need supplier web services**: Partners that submit listings for you may need ILS to activate supplier web services on your account. Retrieving RFQs needs no such step.

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Other industries: [PF Expert](/automate/pf-expert), [myCintas](/automate/mycintas), [Lowe's Vendor Gateway](/automate/lowe-s-vendor-gateway), [Asda Supplier Portal](/automate/asda-supplier-portal), [T-Mobile for Business Account Hub](/automate/t-mobile-for-business-account-hub), [Johnstone Supply](/automate/johnstone-supply).

## Frequently asked questions

### Does ILSmart have an API?

Yes. ILS offers Web Services in XML and JSON for part searches, RFQ review and inventory listing updates, in bundles for buyers, sellers, MROs and government, and ILS Bridge for four named inventory systems. Prices are not published, so you arrange access with ILS.

### Can I check a whole list of part numbers at once?

Yes, with a workflow. It loops over your part numbers, runs the listing summary method for each and keeps only the parts that changed since the last run, then emails you or posts the result to your webhook.

### Where do ILS RFQs go?

To the email addresses in the RFQ Recipient tile, or the MRO RFQ Recipient tile for repair RFQs, under Set Preferences and Company Profile. A method can read those addresses so you notice when one changes.

### How long until an uploaded listing appears on ILSmart?

Up to 24 hours. Listing files are processed during ILS business hours in the US Central time zone, Monday to Friday, and not on US holidays.

### Is Fous affiliated with Inventory Locator Service?

No. Fous is an independent product. It works with your own ILS 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 ILSmart (Inventory Locator Service, LLC). 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.