Job Categories and Identifiers · Levels.fyi

See how Levels.fyi groups similar jobs. Ask for the full list, or add [a job title or kind of work] to find the closest groups and compare related roles.

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Use my Toolmu connection to retrieve the full Levels.fyi job list; it does not need a search, company, or location from me. Then compare [job title or kind of work] with the returned descriptions, example job titles and focus areas. Show clear job-group names, explain why they fit, and include reasonable alternatives when a role could fit more than one group. If I later ask for another connected lookup, handle any matching details yourself instead of asking me to find or enter a code. Do not call these groups open jobs or salary results, and do not claim every company has salary data for every group.

Task:
Find the Levels.fyi work types closest to [Machine Learning Engineer]. Explain each match using the examples and descriptions in the list, and mention other close options.

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Levels.fyi

Job Categories and Identifiers · Levels.fyi

See how Levels.fyi groups similar jobs. Ask for the full list, or add [a job title or kind of work] to find the closest groups and compare related roles.

You receive

Request the job-family directory directly, without a search term or company identifier. Entries identify role groups by name and family identifier. Available descriptions, aliases, example job titles and focus areas explain which kinds of work belong to each group. Your Agent can compare the returned entries and keep the family identifier for a later Tool that accepts it.

Start with your task

Find the Levels.fyi work types closest to [Machine Learning Engineer]. Explain each match using the examples and descriptions in the list, and mention other close options.

What to know

This is Levels.fyi’s role taxonomy. It returns neither job vacancies nor salary amounts, and a listed category does not establish that salary data is available for every company.

Inputs & outputs

Inspect the current inputs, availability, and maximum charge before starting.

Input schema

Input schema
Field / Path	Type	Requirement	Meaning
Optional request options`queryParams`	`object`	Optional	Optional request container with no documented named search or filter inputs. The directory can be requested without it.

View raw JSON

{
  "type": "object",
  "required": [],
  "properties": {
    "queryParams": {
      "type": "object",
      "properties": {},
      "additionalProperties": true
    }
  },
  "additionalProperties": false
}

Result schema

No fixed output contract is available. Field types reflect saved result evidence; individual responses can differ.

Result schema
Field / Path	Type	Meaning
Job families`result.data.job_families`	`array`	Returned directory of source-defined role groups. It does not establish a complete inventory of occupations or company hiring needs.
Family name`result.data.job_families[].name`	`string`	Human-readable name of the job family, such as Software Engineer.
Family identifier`result.data.job_families[].slug`	`string`	Exact identifier for this job family. Preserve its spelling when a supported lookup accepts a job-family slug.
Family description`result.data.job_families[].description`	`string`	Source description of the work grouped into the family. Use it as context for choosing a category.
Family aliases`result.data.job_families[].aliases`	`array`	Alternative names or abbreviations, such as SWE and SDE. They help recognize a family but do not replace its slug; an empty list supplies no aliases.
Broad category`result.data.job_families[].category`	`string`	Source grouping label, such as Technology, above the specific job family.
Example job titles`result.data.job_families[].jobTitles`	`array`	Role-title entries associated with the family. These describe roles rather than advertised vacancies; the list may be empty.
Example title name`result.data.job_families[].jobTitles[].name`	`string`	Name of a role listed within this family.
Title identifier`result.data.job_families[].jobTitles[].slug`	`string`	Identifier of the nested title, distinct from the parent family’s identifier.
Focus areas`result.data.job_families[].focusTags`	`array`	Specialisms grouped within the family. They can include their own descriptions and job titles; the list may be empty.
Focus-area name`result.data.job_families[].focusTags[].name`	`string`	Source name of a specialism, such as ML / AI.
Focus-area identifier`result.data.job_families[].focusTags[].slug`	`string`	Identifier of the focus area, not the family-level slug.
Focus-area description`result.data.job_families[].focusTags[].description`	`string`	Description of the work represented by this specialism, when provided.
Focus-area title examples`result.data.job_families[].focusTags[].jobTitles`	`array`	Role titles listed under a focus area. Keep their link to the parent area and family when explaining a match.

Additional notes

The directory separates broad families from more specific roles. For example, Software Engineer is a family, ML / AI is a focus area within it, and Machine Learning Engineer appears among that area’s titles. Keep those relationships visible when explaining a match.

Levels.fyi software-engineer role page — an example job-family page

Questions about this tool.

Inputs, results and details to know before running it.

Get connected

Use the slug on the family entry itself. A job title or focus area inside that entry may have its own slug, but that identifies a different level of the taxonomy. An alias such as SWE is a naming clue, not a substitute for the returned family slug.

Job Categories and Identifiers · Levels.fyi

Job Categories and Identifiers · Levels.fyi

You receive

Start with your task

What to know

Inputs & outputs

Input schema

Result schema

Request the full list

Describe the work

Understand the closest matches

Questions about this tool.

You receive

Start with your task

What to know

Inputs & outputs

Input schema

Result schema

Request the full list

Describe the work

Understand the closest matches

Questions about this tool.

Which identifier should I use for a job-family input?