Fetch a single client

GET

/api/clients/{id}/

const url = 'http://localhost:8000/api/clients/2489E9AD-2EE2-8E00-8EC9-32D5F69181C0/';
const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}

curl --request GET \
  --url http://localhost:8000/api/clients/2489E9AD-2EE2-8E00-8EC9-32D5F69181C0/ \
  --header 'Authorization: Bearer <token>'

Returns the full Client record including profile fields (height/weight/gender/shoe), the precomputed session_count, and the public avatar_url. Returns 404 for clients owned by a different team — we collapse permission failures into not-found to avoid leaking the existence of cross-team records.

Authorizations

Parameters

Path Parameters

required

string format: uuid

Responses

200

application/json

object

required

Server-assigned UUID for the athlete.

string format: uuid

display_name

required

Athlete’s display name as the coach refers to them. Required.

string

<= 200 characters

email

Any of:

string
string

string format: email

<= 254 characters

gender

male / female / nonbinary / empty string — case and surrounding whitespace are normalised, anything else is a 400. Drives gender-specific green-zone overrides on running cadence, stride length, jump power, and other normative metrics. Leave blank if unknown — you’ll get the all-genders defaults.

string

<= 16 characters

date_of_birth

required

ISO date (YYYY-MM-DD). Required on write; reads back null on athletes migrated before the requirement. Drives age-band-aware green zones — a masters runner and a junior are judged against age-appropriate bands. Stored as the date, not the age, so it never goes stale.

string format: date

nullable

age

required

Whole-years chronological age, computed live from date_of_birth (never stored). null when no DOB is set. Drives age-band-aware metric green zones.

integer

nullable

age_band

required

Demographic age band derived live from age — under_18 / 18_34 / 35_49 / 50_64, then five-year bands above 65 (65_69 / 70_74 / 75_79 / 80_84 / 85_plus), or "" when no DOB is set. The same slice the green-zone resolver and the threshold configurator use; band cutoffs are server-owned so clients never re-derive them (#1406).

string

skill_level

One of:

string
unknown

beginner - Beginner
intermediate - Intermediate
advanced - Advanced

string

Allowed values: beginner intermediate advanced

Training experience: beginner / intermediate / advanced / empty string. Drives skill-level-specific green-zone overrides — a beginner and an advanced athlete are judged against different bands. Coach-set; leave blank for all-levels defaults.

beginner - Beginner
intermediate - Intermediate
advanced - Advanced

Allowed values: ""

height_cm

required

Standing height in centimetres (55-260). Required on write; reads back null on athletes migrated before the requirement. Drives proportional scaling of stride length, vertical oscillation, step width, and trunk sway green zones (legacy rows without it fall back to a 170 cm reference).

integer

nullable <= 32767

weight_kg

required

Body weight in kilograms (20-400). Required on write; reads back null on athletes migrated before the requirement — drives force / power / impulse metrics on jump and agility activities (legacy rows without it fall back to 75 kg, which can introduce 20-30% error on those readings).

number format: double

nullable

leg_length_cm

Optional. Leg length in centimetres (35-150). Used only by specific running analyzers when present; safe to leave null.

number format: double

nullable

shoe_size

Free-text shoe size (e.g. 42 EU, 9 US). Coach reference only.

string

<= 16 characters

avatar_url

Any of:

string
string

string format: uri

<= 200 characters

dominant_hand

One of:

string
unknown

right - Right
left - Left
ambidextrous - Ambidextrous

string

Allowed values: right left ambidextrous

right / left / ambidextrous / empty. Durable client-profile attribute; protocol reports (Tennis Serve, Running Gait) key off the dominant side. Distinct from the per-session handedness mapping.

right - Right
left - Left
ambidextrous - Ambidextrous

Allowed values: ""

position

One of:

string
unknown

quarterback - Quarterback
running_back - Running Back
wide_receiver - Wide Receiver
tight_end - Tight End
offensive_line - Offensive Line
defensive_line - Defensive Line
linebacker - Linebacker
defensive_back - Defensive Back

string

Allowed values: quarterback running_back wide_receiver tight_end offensive_line defensive_line linebacker defensive_back

Playing-position group for team-sport athletes: quarterback / running_back / wide_receiver / tight_end / offensive_line / defensive_line / linebacker / defensive_back / empty string. The DB Injury-Risk Battery uses it for its Defensive-Back eligibility check (warns on a non-DB athlete, never blocks). Leave blank if unknown / not a team-sport athlete.

quarterback - Quarterback
running_back - Running Back
wide_receiver - Wide Receiver
tight_end - Tight End
offensive_line - Offensive Line
defensive_line - Defensive Line
linebacker - Linebacker
defensive_back - Defensive Back

Allowed values: ""

injury_history

List of prior / ongoing injury entries. Each item: { id, bodyPartId, label, side?, date?, severity?, note? } (mirrors the InjuryHistoryEditor item shape; date is yyyy-mm-dd or the sentinel ongoing). Stored verbatim so a Solutions InjuryHistoryBlock renders it with no transform.

workstation_setup

Reusable Workspace Wellness workstation setup — { posture, measurements_cm: { desktop_height, seat_top_height?, seat_pan_depth?, back_rest_height?, eye_level_height, screen_top_height } } (mirrors WorkstationSetupSerializer; seat fields required only when posture is seated). The ergonomics survey step pre-fills from this so a returning subject doesn’t re-measure their desk; each session snapshots its own point-in-time copy. Empty object {} means unset. See #303 / #530.

notes

Coach’s free-text notes on the athlete — the general-purpose field that replaced the narrow sport_type / nature_of_work questions (#926). Bounded to 2000 chars.

string

<= 2000 characters

external_uid

required

Your own stable id for this athlete in your external system (athlete-management software, club ID, etc.). We never interpret this; useful for cross-system joins. Read-only here — set at create time only.

string

session_count

required

Number of sessions tied to this client. Read-only; computed live. The web’s delete-confirm dialog uses this to spell out how much history a delete will wipe.

integer

group_ids

required

UUIDs of the ClientGroups this athlete belongs to (#545) — many-to-many, so an athlete can be in several. Drives the group chips + filter on the Clients page; mutate via the /api/client-groups/<id>/members/ endpoints, never here.

Array<string>

created_at

required

ISO-8601 UTC timestamp of client creation.

string format: date-time

updated_at

required

ISO-8601 UTC timestamp of the last mutation.

string format: date-time

Examples

AClient

A client

{
  "id": "f6d52e64-3aa3-4a26-bac2-0fc9d718448d",
  "display_name": "Anna Petrova",
  "email": "anna@example.com",
  "gender": "female",
  "height_cm": 168,
  "weight_kg": 58,
  "leg_length_cm": null,
  "shoe_size": "38 EU",
  "avatar_url": "https://media.ai.aikynetix.app/teams/…/clients/…/avatar-a1b2c3d4.jpg",
  "external_uid": "club-roster-id-2419",
  "session_count": 12,
  "created_at": "2026-04-29T10:00:00Z",
  "updated_at": "2026-05-20T14:31:00Z"
}

401

application/json

object

detail

required

Human-readable message, or a stable machine code for the cases a client branches on. The standard envelope for 400 (validation — a field-keyed object may appear instead), 401 (missing / invalid credentials), 403 (authenticated but not permitted), and 404 (absent — cross-team records are collapsed to 404 so the API never leaks the existence of another team’s data).

string

Example^generated

{
  "detail": "example"
}

404

application/json

object

detail

required

string

Examples

404—NoSuchClientOnThisTeam

Absent, or owned by another team (collapsed to 404)

{
  "detail": "No Client matches the given query."
}

Fetch a single client

Authorizations

Parameters

Path Parameters

Responses

200

Examples

401

Examplegenerated

404

Examples

Example^generated