Kroenke 2001 PHQ-9 from nine caller-assigned DSM-IV depression items as integers
Kroenke 2001 PHQ-9 from nine caller-assigned DSM-IV depression items as integers 0-3 (0 not at all, 1 several days, 2 more than half the days, 3 nearly every day). magent does not interpret the items. Total 0-27. Severity: 0-4 none_minimal, 5-9 mild, 10-14 moderate, 15-19 moderately_severe, 20-27 severe. Returns screen_ge_10 (score ≥10; this paper 88% sensitivity and 88% specificity for major depression). Not a diagnosis, not a treatment order, not GAD-7, and not PHQ-2/PHQ-8.
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.magentlab.com/api/calc/phq_9
| Category | Everything else |
|---|---|
| Provider host | api.magentlab.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-28 | valid payment request | 402 | $0.007 | 278 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"anhedonia": 0,
"appetite": 0,
"concentration": 0,
"depressed": 0,
"energy": 0,
"failure": 0,
"psychomotor": 0,
"self_harm": 0,
"sleep": 0
},
{
"anhedonia": 0,
"appetite": 0,
"concentration": 0,
"depressed": 0,
"energy": 0,
"failure": 0,
"psychomotor": 0,
"self_harm": 0,
"sleep": 0
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"anhedonia": {
"description": "Caller-assigned Kroenke 2001 PHQ-9 item 1 (integer 0-3): little interest or pleasure in doing things (0 not at all, 1 several days, 2 more than half the days, 3 nearly every day). magent does not interpret the item.",
"type": "integer"
},
"appetite": {
"description": "Caller-assigned Kroenke 2001 PHQ-9 item 5 (integer 0-3): poor appetite or overeating. magent does not interpret the item.",
"type": "integer"
},
"concentration": {
"description": "Caller-assigned Kroenke 2001 PHQ-9 item 7 (integer 0-3): trouble concentrating on things such as reading or watching television. magent does not interpret the item.",
"type": "integer"
},
"depressed": {
"description": "Caller-assigned Kroenke 2001 PHQ-9 item 2 (integer 0-3): feeling down, depressed, or hopeless. magent does not interpret the item.",
"type": "integer"
},
"energy": {
"description": "Caller-assigned Kroenke 2001 PHQ-9 item 4 (integer 0-3): feeling tired or having little energy. magent does not interpret the item.",
"type": "integer"
},
"failure": {
"description": "Caller-assigned Kroenke 2001 PHQ-9 item 6 (integer 0-3): feeling bad about yourself \u2014 a failure, or having let yourself or your family down. magent does not interpret the item.",
"type": "integer"
},
"psychomotor": {
"description": "Caller-assigned Kroenke 2001 PHQ-9 item 8 (integer 0-3): moving or speaking so slowly that other people could have noticed, or being so fidgety or restless that you have been moving around a lot more than usual. magent does not interpret the item.",
"type": "integer"
},
"self_harm": {
"description": "Caller-assigned Kroenke 2001 PHQ-9 item 9 (integer 0-3): thoughts that you would be better off dead, or of hurting yourself in some way. magent does not interpret the item.",
"type": "integer"
},
"sleep": {
"description": "Caller-assigned Kroenke 2001 PHQ-9 item 3 (integer 0-3): trouble falling or staying asleep, or sleeping too much. magent does not interpret the item.",
"type": "integer"
}
},
"required": [
"anhedonia",
"depressed",
"sleep",
"energy",
"appetite",
"failure",
"concentration",
"psychomotor",
"self_harm"
],
"type": "object"
},
"maxItems": 25,
"minItems": 1,
"type": "array"
}
},
"required": [
"items"
],
"type": "object"
},
"headers": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"method": {
"const": "POST",
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}