Reference

Expand job titles

POST /v1/job-titles/expand. Show every title a keyword matches through the expansion sets (plurals, department synonyms, ampersands, abbreviations, word order), each with a count, or what a bundle such as sdm resolves to.

Generated from the contractsView as Markdown

POST /v1/job-titles/expand

Show every title a keyword matches through the expansion sets (plurals, department synonyms, ampersands, abbreviations, word order), each with a count, or what a bundle such as sdm resolves to. Nothing is resolved silently.

Property	Value
Endpoint	`POST https://mydatahub.emailmovers.com/v1/job-titles/expand`
Operation id	`expandJobTitles`
Cost	Free (0 credits)
Access	No account, key or token needed.
MCP tool	`expand_job_titles`
Tag	Catalogue

Request

Parameters

Name	In	Type	Required	Description
`MyDataHub-Version`	header	string	no	The dated API version, pinned per key when left out. Non-breaking changes ship as new dates; the path major changes only for breaking changes, with a 12 month deprecation window.

Body

Member	Type	Required	Description
`terms`	array of string	no	Title keywords to expand, such as marketing manager.
`bundle`	enum: `sdm`, `manager_and_above`, `owner_managed`	no	A title bundle to show: sdm, manager_and_above or owner_managed.
`mode`	enum: `contains`, `starts_with`, `exact`	no	contains (the default) matches titles containing a term, starts_with matches titles beginning with it, exact takes verbatim titles with no expansion.
`expand`	array of enum: `plural_singular`, `department_synonyms`, `ampersand_and`, `abbreviations`, `permutations`	no	Expansion sets to apply, each once. Left out, the four default sets apply.
`dataset`	enum: `uk_contacts`, `ie_contacts`, `global_contacts`	no	The dataset an audience draws from. uk_contacts is live; ie_contacts and global_contacts are listed but not yet served.

Example request

curl -X POST "https://mydatahub.emailmovers.com/v1/job-titles/expand" \
  -H "Content-Type: application/json" \
  --data '{
  "terms": ["marketing manager"],
  "mode": "contains"
}'

Responses

200: The expanded titles.

Headers: RateLimit, RateLimit-Policy.

Member	Type	Always present	Description
`dataset_version`	string	yes	The immutable weekly build a count is bound to, such as 2026-W39. The last 52 stay queryable.
`mode`	enum: `contains`, `starts_with`, `exact`	yes	contains (the default) matches titles containing a term, starts_with matches titles beginning with it, exact takes verbatim titles with no expansion.
`expand`	array of enum: `plural_singular`, `department_synonyms`, `ampersand_and`, `abbreviations`, `permutations`	yes
`terms`	array of `ExpandedTerm`	yes
`terms[].term`	string	yes	A matched title.
`terms[].from_term`	string	yes	The input term it came from.
`terms[].expansion_set`	enum: `plural_singular`, `department_synonyms`, `ampersand_and`, `abbreviations`, `permutations` or `input`	yes	The expansion set that produced it, or input for the term itself.
`terms[].contacts`	integer (0 or more) or `under 10` or `suppressed`	yes	A whole number; "under 10" when disclosure control withholds a small cell; or "suppressed" when secondary suppression hides a cell of 10 or more in a cross-tab or breakdown, so totals cannot be differenced. Anonymous and trial callers see cells rounded to the nearest 5.
`terms[].excluded`	boolean	no	True when exclude_terms removed it from the audience.
`total_contacts`	integer (0 or more) or `under 10` or `suppressed`	yes	A whole number; "under 10" when disclosure control withholds a small cell; or "suppressed" when secondary suppression hides a cell of 10 or more in a cross-tab or breakdown, so totals cannot be differenced. Anonymous and trial callers see cells rounded to the nearest 5.
`bundle`	object or null	yes
`bundle.id`	enum: `sdm`, `manager_and_above`, `owner_managed`	yes
`bundle.label`	string	yes
`bundle.status`	enum: `confirmed`, `proposed`, `to_confirm`	yes
`bundle.resolves_to`	`WhereNode`	yes	A group (all, any, not), a title bundle or a filter. Groups nest up to 32 deep, and a where tree holds up to 1,000 filters, groups and bundles.
`filter`	`Filter` or null	yes	A ready matches filter for the terms, or null for a bundle.
`disclosure`	`Disclosure`	yes	Whether these numbers are exact or protected: "under 10" cells, rounding to 5 and secondary suppression for anonymous and trial callers.
`disclosure.level`	enum: `exact`, `rounded`	yes	exact for authenticated paid callers; rounded for anonymous and trial callers, whose counts under 100 and every cell are rounded to the nearest 5.
`disclosure.rounded_to`	integer or null	yes	5 when numbers are rounded; null when they are exact.
`disclosure.secondary_suppression`	boolean	yes	True when cross-tab or breakdown cells of 10 or more were hidden as "suppressed" so totals cannot be differenced.
`disclosure.notes`	array of string	yes

Example response

{
  "dataset_version": "2026-W39",
  "mode": "contains",
  "expand": ["plural_singular", "department_synonyms", "ampersand_and", "abbreviations"],
  "terms": [
    {
      "term": "Marketing Manager",
      "from_term": "marketing manager",
      "expansion_set": "input",
      "contacts": 6210
    },
    {
      "term": "Marketing Managers",
      "from_term": "marketing manager",
      "expansion_set": "plural_singular",
      "contacts": 14
    },
    {
      "term": "Mktg Manager",
      "from_term": "marketing manager",
      "expansion_set": "abbreviations",
      "contacts": "under 10"
    }
  ],
  "total_contacts": 6230,
  "bundle": null,
  "filter": {
    "field": "contact.title",
    "op": "matches",
    "terms": ["marketing manager"],
    "mode": "contains",
    "expand": ["plural_singular", "department_synonyms", "ampersand_and", "abbreviations"]
  },
  "disclosure": {
    "level": "rounded",
    "rounded_to": 5,
    "secondary_suppression": false,
    "notes": [
      "Counts under 100 and every breakdown cell are rounded to the nearest 5 for anonymous and trial callers."
    ]
  }
}

Errors

Every error is a problem object with a code and a next_step. Every response carries the RateLimit and RateLimit-Policy headers; see Rate limits.

Status	Problem codes	When
400	`invalid-request`, `idempotency-key-required`, `unsupported-version`	The request could not be read, or an Idempotency-Key is missing.
422	`validation-failed`, `quote-required`, `dataset-unavailable`	The request is not valid. errors lists every problem with a JSON pointer and did_you_mean.
429	`rate-limited`	Too many requests. Wait for Retry-After.
Any other failure	`internal-error`, `service-unavailable`, `tps-screen-expired`	Something failed on our side (500 internal-error) or the service is briefly unavailable (503 service-unavailable, with Retry-After). Nothing was charged; retry with the same Idempotency-Key. A count, sample, quote or order with telephone in play is also refused with 503 tps-screen-expired, with no Retry-After, while the dataset version's TPS and CTPS screen is more than 28 days old.