● Case Spine

Claimants.

Claimant registry and recovery economics.

POST	/v1/matters/{matter_id}/claimants	Add claimant
GET	/v1/matters/{matter_id}/claimants	List claimants
GET	/v1/claimants/{claimant_id}	Get claimant
PATCH	/v1/claimants/{claimant_id}	Update claimant

POST/v1/matters/{matter_id}/claimants

Add claimant.

Adds claimant, creditor, assignee, or recovery interest holder to a matter.

scope · claimants:writeidempotent · Idempotency-Key

§ Path parameters

Parameter	Type
matter_id required · path	string

§ Body parameters

Field	Type
name	string
role	string
economics	object
source_refs	array

# sandbox — full surface, no production data
curl -X POST https://api.microndelta.com \
     /v1/matters/mtr_4Fa1/claimants \
  -H "Authorization: Bearer md_test_xxxxxxxxxxxxxxxx" \
  -H "MD-Version: 2026-06-11" \
  -H "Idempotency-Key: 4f8a-bd31" \
  -d '{
  "name": "string",
  "role": "string",
  "economics": {},
  "source_refs": [
    {
      "source_id": "...",
      "source_type": "...",
      "title": "...",
      "uri": "...",
      "hash": "...",
      "chain_of_custody_id": "...",
      "admissibility_notes": "..."
    }
  ]
}'

● 200MD-Request-Id: req_01J…

201 Response

{
  "claimant_id": "string",
  "matter_id": "string",
  "name": "string",
  "role": "creditor",
  "economics": {},
  "review_state": {
    "review_required": true,
    "review_status": "not_required",
    "review_owner": "string",
    "review_notes": "string"
  }
}

GET/v1/matters/{matter_id}/claimants

List claimants.

Lists matter claimants and recovery economics.

scope · claimants:read

§ Path parameters

Parameter	Type
matter_id required · path	string

# sandbox — full surface, no production data
curl https://api.microndelta.com \
     /v1/matters/mtr_4Fa1/claimants \
  -H "Authorization: Bearer md_test_xxxxxxxxxxxxxxxx" \
  -H "MD-Version: 2026-06-11"

● 200MD-Request-Id: req_01J…

200 Response

{
  "items": [
    {
      "claimant_id": "...",
      "matter_id": "...",
      "name": "...",
      "role": "...",
      "economics": "...",
      "review_state": "..."
    }
  ]
}

GET/v1/claimants/{claimant_id}

Get claimant.

Gets claimant and economics terms.

scope · claimants:read

§ Path parameters

Parameter	Type
claimant_id required · path	string

# sandbox — full surface, no production data
curl https://api.microndelta.com \
     /v1/claimants/cla_91Lk \
  -H "Authorization: Bearer md_test_xxxxxxxxxxxxxxxx" \
  -H "MD-Version: 2026-06-11"

● 200MD-Request-Id: req_01J…

200 Response

{
  "claimant_id": "string",
  "matter_id": "string",
  "name": "string",
  "role": "creditor",
  "economics": {},
  "review_state": {
    "review_required": true,
    "review_status": "not_required",
    "review_owner": "string",
    "review_notes": "string"
  }
}

PATCH/v1/claimants/{claimant_id}

Update claimant.

Updates claimant terms and review status.

scope · claimants:writeidempotent · Idempotency-Key

§ Path parameters

Parameter	Type
claimant_id required · path	string

§ Body parameters

Field	Type
name	string
economics	object
review_state	object

# sandbox — full surface, no production data
curl -X PATCH https://api.microndelta.com \
     /v1/claimants/cla_91Lk \
  -H "Authorization: Bearer md_test_xxxxxxxxxxxxxxxx" \
  -H "MD-Version: 2026-06-11" \
  -H "Idempotency-Key: 4f8a-bd31" \
  -d '{
  "name": "string",
  "economics": {},
  "review_state": {
    "review_required": true,
    "review_status": "not_required",
    "review_owner": "string",
    "review_notes": "string"
  }
}'

● 200MD-Request-Id: req_01J…

200 Response

{
  "claimant_id": "string",
  "matter_id": "string",
  "name": "string",
  "role": "creditor",
  "economics": {},
  "review_state": {
    "review_required": true,
    "review_status": "not_required",
    "review_owner": "string",
    "review_notes": "string"
  }
}