EID.matcher
The domain of the company whose technology made the match described by mm. When it is omitted, buyers assume the matcher is the ID's source. Added in OpenRTB 2.6-202409.
Field facts
- Path
user.eids.matcher- Object
- EID
- Type
- string
- Requirement
- Optional
- Added
- OpenRTB 2.6-202409
- Spec section
- 3.2.27
How it is used
It can equal inserter, for example when an SSP both matches and inserts the ID. The spec allows leaving it out when mm is 0, 1, or 2 (unknown, no match, or browser cookie sync).
Example
Where the field sits in a payload, with everything else left out:
{
"id": "req-1",
"user": {
"eids": [
{
"matcher": "idbridge.example"
}
]
}
}Version history
Added in OpenRTB 2.6-202409, and present in the latest snapshot. The table shows how each version's spec text types the field.
| Versions | Type in the spec | Required | Deprecated |
|---|---|---|---|
| 2.6-202409 | Listed in this release's notes; IAB's tagged spec file for it does not include the field yet. | ||
| 2.6-202501 to 2.6-202606 | string | No | No |
Related fields
Other EID fields
For a walkthrough of the whole object, read User identity and EIDs.