# people.link_identity

## What it does

Map a named vendor-account-scoped holder to a person for a dated period, or identify it as external, shared or an agent. Does not rewrite usage observations or revoke access. Corrections require expectedEventId; through equal to from retracts a wrong mapping so a new record can state the right one.

## Before you send it

An authorized OAuth connection may call it, including a headless client. Effective membership, application grant and token permissions still apply. Describe `people.link_identity` through `GET /v1/catalog/commands/{name}` before acting.

This command does not accept `source_document_id` in its envelope. Any input evidence requirements remain as documented below.

## Inputs

Put these fields inside the envelope's `input` object. The outer envelope names the command, a stable `idempotency_key` and `effective_at`; [request and recovery rules](/docs/api/) explain those separately. Use exact minor-unit integer strings for monetary fields. Take existing IDs from prior reads or command results; choose a new identity only where the command asks for one.

Required means required within its containing object; an optional parent can be omitted.

| Field | Type | Required | Meaning and accepted values |
|---|---|---|---|
| `identityId` | string | Yes |  Minimum length: `1`. Example: `"people_example"`. |
| `from` | string | Yes |  Minimum length: `1`. Maximum length: `512`. Example: `"2026-01-01"`. |
| `through` | string | No |  Minimum length: `1`. Maximum length: `512`. |
| `sourceFactId` | string | Yes |  Minimum length: `1`. Maximum length: `512`. Example: `"example:people"`. |
| `evidence` | array | Yes |  Items: object. Minimum items: `1`. Maximum items: `20`. |
| `evidence[].kind` | string | Yes |  Choose `"tap_message"`, `"x402_receipt"`, `"chain_tx"`, `"signed_doc"`, `"stripe_object"`, `"other"`. Example: `"other"`. |
| `evidence[].ref` | string | Yes |  Minimum length: `1`. Example: `"synthetic-evidence"`. |
| `evidence[].signer` | string | No |  Minimum length: `1`. |
| `expectedEventId` | integer | No |  Minimum: `1`. |
| `personPartyId` | string | No |  Minimum length: `1`. Example: `"pty_person"`. |
| `kind` | string | Yes |  Choose `"person"`, `"external"`, `"shared"`, `"agent"`. Example: `"person"`. |
| `vendorPartyId` | string | Yes |  Minimum length: `1`. Example: `"pty_vendor"`. |
| `accountId` | string | Yes |  Minimum length: `1`. Maximum length: `512`. Example: `"workspace"`. |
| `holder` | string | Yes |  Minimum length: `1`. Maximum length: `512`. Example: `"user-1"`. |

## After acceptance

When the command emits events, its documented effects and receipt are recorded in the command transaction. The response returns `commandId`, `replayed`, the command-specific `result` below and emitted `events` with their IDs and CIDs. A command is not automatically a cash movement or revenue recognition: use the behavior above to determine what this command records.

Inspect `result` and the affected records or reports before continuing. Save returned identifiers for later calls. Fetch `GET /v1/commands/{id}` with `commandId` to recover the accepted receipt; retry the same intent with the same idempotency key if the response was lost. Some commands can succeed with `events: []` and return a transient result and `commandId` without persisting a receipt. A lookup of that ID can return null; retain the returned result and verify the affected record. Retrying can re-evaluate the current state rather than replay a stored result. A domain `no_change` is a separate success outcome with no persisted receipt.

### Result fields

See the exact schema below for the accepted shape.


[All commands](/docs/command-reference/) · [Operation and errors](/docs/api-reference/operations/commands-execute/) · [Reusable schemas](/docs/api-reference/components/)

Keep credentials out of prompts; rehearse writes only in a disposable sandbox.

## Exact request schema


```json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "name": {
      "const": "people.link_identity"
    },
    "input": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "identityId": {
          "type": "string",
          "minLength": 1
        },
        "from": {
          "type": "string",
          "minLength": 1,
          "maxLength": 512
        },
        "through": {
          "type": "string",
          "minLength": 1,
          "maxLength": 512
        },
        "sourceFactId": {
          "type": "string",
          "minLength": 1,
          "maxLength": 512
        },
        "evidence": {
          "type": "array",
          "minItems": 1,
          "maxItems": 20,
          "items": {
            "type": "object",
            "additionalProperties": false,
            "required": [
              "kind",
              "ref"
            ],
            "properties": {
              "kind": {
                "enum": [
                  "tap_message",
                  "x402_receipt",
                  "chain_tx",
                  "signed_doc",
                  "stripe_object",
                  "other"
                ]
              },
              "ref": {
                "type": "string",
                "minLength": 1
              },
              "signer": {
                "type": "string",
                "minLength": 1
              }
            }
          }
        },
        "expectedEventId": {
          "type": "integer",
          "minimum": 1
        },
        "personPartyId": {
          "type": "string",
          "minLength": 1
        },
        "kind": {
          "enum": [
            "person",
            "external",
            "shared",
            "agent"
          ]
        },
        "vendorPartyId": {
          "type": "string",
          "minLength": 1
        },
        "accountId": {
          "type": "string",
          "minLength": 1,
          "maxLength": 512
        },
        "holder": {
          "type": "string",
          "minLength": 1,
          "maxLength": 512
        }
      },
      "required": [
        "identityId",
        "from",
        "sourceFactId",
        "evidence",
        "kind",
        "vendorPartyId",
        "accountId",
        "holder"
      ]
    },
    "idempotency_key": {
      "type": "string",
      "minLength": 1,
      "maxLength": 256
    },
    "effective_at": {
      "type": "string",
      "format": "date-time",
      "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d+)?(?:Z))$"
    }
  },
  "required": [
    "name",
    "input",
    "idempotency_key",
    "effective_at"
  ],
  "additionalProperties": false
}
```

## Accepted command receipt


```json
{
  "type": "object",
  "required": [
    "commandId",
    "replayed",
    "result",
    "events"
  ],
  "properties": {
    "commandId": {
      "type": "string"
    },
    "replayed": {
      "type": "boolean"
    },
    "imported": {
      "const": true,
      "description": "The command's events are history from before the business joined Economico, recorded as an import: free of monthly events."
    },
    "result": {
      "type": "object",
      "additionalProperties": true
    },
    "events": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "type": "integer"
          },
          "cid": {
            "type": "string"
          }
        }
      }
    }
  }
}
```

## Example request


```json
{
  "name": "people.link_identity",
  "input": {
    "identityId": "people_example",
    "from": "2026-01-01",
    "sourceFactId": "example:people",
    "evidence": [
      {
        "kind": "other",
        "ref": "synthetic-evidence"
      }
    ],
    "personPartyId": "pty_person",
    "kind": "person",
    "vendorPartyId": "pty_vendor",
    "accountId": "workspace",
    "holder": "user-1"
  },
  "effective_at": "2026-09-01T00:00:00Z",
  "idempotency_key": "people.link_identity-example-0"
}
```