Skip to content

The consumer API example

A consumer API lets another system read the business objects a model chooses to share. It brings fields and related records into one answer, so a consumer does not have to assemble the record structure itself. The contract, including its names, lists and events, belongs to the model.

Both examples use the same object and operation patterns, so consuming systems can reuse how they read data while each model chooses the contract’s content.

The optional starter model includes one such contract. The reference-data model uses the same capability for transport stops. Neither contract is built into refiroo. This page first shows what the starter offers, then uses the populated reference example to show what another system receives.

What the starter offers

Section titled “What the starter offers”

RDM API, version 1, exposes domains, codelists and master values. A master value has the public type name CodelistValue. Its answer includes its code, name, active status, validity dates, description, master identifier, value name, sort order, parent and ancestor path, plus related system representations and translations.

These are selected parts of the starter declaration; the object and matching definitions are omitted here. It is an explanatory excerpt, not a complete declaration to install:

{
  "key": "rdm",
  "name": "RDM API",
  "contractVersion": 1,
  "exposes": [
    "domain",
    "codelist",
    "master-value"
  ],
  "publicNames": {
    "master-value": "CodelistValue"
  }
}

The declaration also includes these lists and event under its operations:

{
  "lists": {
    "domains": {
      "of": "domain"
    },
    "codelists": {
      "of": "codelist",
      "within": {
        "filter": "domain"
      }
    },
    "values": {
      "of": "master-value",
      "within": {
        "filter": "codelist"
      },
      "sortBy": "sort-order"
    }
  },
  "events": {
    "custom": [
      {
        "key": "values-changed",
        "objectTypes": [
          "master-value"
        ],
        "changes": [
          "created",
          "updated",
          "deleted"
        ],
        "watch": {
          "fields": [
            "code",
            "name",
            "isActive",
            "validFrom",
            "validTo"
          ]
        }
      }
    ]
  }
}

The domain list reads domains; the codelist list can narrow to a domain; the values list can narrow to a codelist and orders by sort order. Lookup finds records through their identifiers, codes, names, related system values or translated names. Batch resolution applies those questions to many inputs.

The values-changed event announces creations and deletions of master values and updates affecting the watched public fields: code, name, active status and validity dates. It does not promise a notification for every field or related translation edit. Unpublished change-set edits do not send consumer events.

A fresh installation can therefore show a contract even before records have been added. The empty starter workspace has no populated answer to demonstrate; the examples below use real values from the guide’s transport snapshot instead.

The populated reference example

Section titled “The populated reference example”

Stops API, version 1, exposes stops, municipalities, operators and modes. A stop answer brings together its municipality, operator, modes, system codes and any related name translations. A related block can be empty: this model’s Names application supplies municipality and operator names, so the stop below has no translations of its own.

For browser readers, Consumer APIs in the model explains where to inspect the contract. For integration developers, the remainder of this example shows the declaration and complete requests and answers. Start with Consumer APIs for access, versioning and consistency rules.

How the declaration becomes the API

Section titled “How the declaration becomes the API”

These selected parts come from the reference model. Other exposed fields, lists, filters and related blocks are omitted from this excerpt; it is not a complete model to install:

{
  "key": "stops",
  "name": "Stops API",
  "contractVersion": 1,
  "exposes": [
    "stop",
    "municipality",
    "operator",
    "mode"
  ],
  "publicNames": {
    "stop": "Stop",
    "municipality": "Municipality",
    "operator": "Operator",
    "mode": "Mode"
  },
  "object": {
    "fields": {
      "id": {
        "role": "id"
      },
      "code": {
        "role": "code",
        "from": [
          "sloid",
          "operator-code",
          "mode-code"
        ]
      },
      "name": {
        "role": "name",
        "from": "name"
      },
      "validFrom": {
        "role": "validFrom",
        "from": "valid-from"
      },
      "validTo": {
        "role": "validTo",
        "from": "valid-to"
      },
      "stopNumber": "stop-number",
      "abbreviation": "abbreviation",
      "fsoNumber": "fso-number",
      "latitude": "latitude",
      "longitude": "longitude",
      "height": "height",
      "sboid": "operator-sboid"
    },
    "parent": [
      "objectType",
      "id",
      "code",
      "name"
    ],
    "path": true,
    "related": {
      "operator": {
        "via": "stop-operated-by-operator",
        "fields": {
          "id": "id",
          "code": "operator-code",
          "name": "name",
          "localName": "relation:local-name",
          "isPrimary": "relation:is-primary"
        }
      }
    }
  },
  "operations": {
    "objects": {},
    "lists": {
      "all-stops": {
        "of": "stop",
        "sortBy": "stop-number"
      }
    },
    "events": {
      "custom": [
        {
          "key": "stops-changed",
          "objectTypes": [
            "stop"
          ],
          "changes": [
            "created",
            "updated",
            "deleted"
          ],
          "watch": {
            "fields": [
              "code",
              "name",
              "validFrom",
              "validTo"
            ]
          }
        }
      ]
    }
  },
  "filters": {
    "operator": {
      "onRelated": "operator",
      "matchOn": [
        "operator-code",
        "name"
      ],
      "keepOnlyMatching": true
    }
  }
}
Declaration What another system sees
key and contractVersion The base address /api/consumer/stops/v1.
exposes and publicNames Public types Stop, Municipality, Operator and Mode.
object.fields Output names such as stopNumber, sourced from the model’s fields. code takes the first nonempty source in its list. A missing value takes a declared default, otherwise null.
parent and path The immediate parent and its ancestor path, without the stop itself in that path.
related.operator An operator object, or null; the other declared blocks include arrays of modes, codes and translations.
operations.objects A read by public record ID at /objects/{id}.
operations.lists.all-stops A paged stop list at /lists/all-stops, ordered by stop number.
filters.operator An operator parameter matching operator code or name and keeping only stops with a match.
The declared custom event An event named stops-changed, watching code, name and validity dates.

The complete declaration also enables XREF lookup and batch resolution. Its exact stop-number match has weight 900; a name match has weight 200 for the whole name or 30 for part of it. Those are this model’s choices, not confidence percentages. See the matching declaration and scoring example.

Read a stop by its ID

Section titled “Read a stop by its ID”

Use a consumer token belonging to a client granted this API in this workspace. A person’s role does not provide that grant. See Clients and Signing in and tokens.

Reference-data example: replace the host and token with your instance’s values. The bodies below were read from the reference instance using the 2 November 2026 dataset. ETags, cursors and event identifiers are the values from that read and depend on the instance. Obtain fresh values from your own responses.

GET /api/consumer/stops/v1/objects/8d90eede-23cf-47c1-8dac-cb37956f5fd5?workspace=graubuenden HTTP/1.1
Host: <instance>
Authorization: Bearer <consumer-token>
Accept: application/json
HTTP/1.1 200 OK
Content-Type: application/json
RDM-Workspace: graubuenden
ETag: W/"aa0a706f7657c2adb5a7:1"
{
  "objectType": "Stop",
  "id": "8d90eede-23cf-47c1-8dac-cb37956f5fd5",
  "code": "ch:1:sloid:5173",
  "name": "Tschamut-Selva",
  "validFrom": "2021-04-01",
  "validTo": null,
  "stopNumber": 8505173,
  "abbreviation": "TSSE",
  "fsoNumber": null,
  "latitude": "46.65674442039232",
  "longitude": "8.709084193690385",
  "height": "1701.3",
  "sboid": null,
  "parent": {
    "objectType": "Municipality",
    "id": "06073bf3-cb29-475e-a87a-8fc6dbb8b8cc",
    "code": null,
    "name": "Tujetsch"
  },
  "path": "Graubünden/Surselva/Tujetsch",
  "operator": {
    "id": "f94ef862-2a95-4675-9e31-6b1d0a03317f",
    "code": "MGB-fo",
    "name": "Matterhorn Gotthard Bahn (fo)",
    "localName": null,
    "isPrimary": null
  },
  "modes": [
    {
      "id": "0f61601d-ec0c-4944-bab9-cf0d1d8665a9",
      "code": "TRAIN",
      "name": "Train"
    }
  ],
  "systemCodes": [
    {
      "system": "Wikidata: stations",
      "systemKey": "wikidata-stations",
      "code": "Q33467326",
      "name": "Q33467326 Tschamut-Selva"
    }
  ],
  "translations": []
}

The UUID in the path is the record’s stable identity. Its code and stop number are separate business identifiers. The stop number is an integer; decimal coordinates and height use decimal strings to retain precision. Null fields have no applicable value here. The parent is one object, modes and system codes are arrays, and an empty translations array is a complete answer.

This declaration selects only the parent’s type, identity, code and name, and serves its related blocks always. Other declarations can add typed parent attributes and the parent’s own related blocks, or serve a block only when requested. See parent values and optional blocks for the declaration and request rules; the captured answer above is unchanged.

Read a list, then narrow it

Section titled “Read a list, then narrow it”

This first-page request asks for one stop and an exact total:

GET /api/consumer/stops/v1/lists/all-stops?workspace=graubuenden&pageSize=1&includeTotal=true HTTP/1.1
Host: <instance>
Authorization: Bearer <consumer-token>
Accept: application/json
HTTP/1.1 200 OK
Content-Type: application/json
RDM-Workspace: graubuenden
{
  "items": [
    {
      "objectType": "Stop",
      "id": "6583e8c9-582c-4bc5-b113-dbdbcc31a44a",
      "code": "ch:1:sloid:4",
      "name": "Selva, via Alpsu spv.",
      "validFrom": "2022-11-14",
      "validTo": null,
      "stopNumber": 8500004,
      "abbreviation": "SAXX",
      "fsoNumber": null,
      "latitude": "46.662107304536484",
      "longitude": "8.723794590415595",
      "height": "1553.9",
      "sboid": null,
      "parent": {
        "objectType": "Municipality",
        "id": "06073bf3-cb29-475e-a87a-8fc6dbb8b8cc",
        "code": null,
        "name": "Tujetsch"
      },
      "path": "Graubünden/Surselva/Tujetsch",
      "operator": {
        "id": "69907d18-f444-400a-b8a2-359bfbd405fc",
        "code": "MGB/Autofo",
        "name": "Automobildienst Matterhorn Gotthard Bahn (fo auto)",
        "localName": null,
        "isPrimary": null
      },
      "modes": [
        {
          "id": "ef9e4eea-74a4-4380-a426-b9faae4a298f",
          "code": "BUS",
          "name": "Bus"
        }
      ],
      "systemCodes": [],
      "translations": []
    }
  ],
  "workspace": "graubuenden",
  "publication": null,
  "pageSize": 1,
  "nextCursor": "eyJmaWx0ZXJzIjoiYjIzZTk0OTg0NzVlMDVmYWZmNTc1MGYzOTBkNDdlOWE3ZmJmZDQ5NWIwZWViZTc4NTY5ZDk4ZjE3ZmFkM2M1MiIsInBvc2l0aW9uIjpbIjAiLCI4NTAwMDA0IiwiU2VsdmEsIHZpYSBBbHBzdSBzcHYuIiwiNjU4M2U4YzktNTgyYy00YmM1LWIxMTMtZGJkYmNjMzFhNDRhIl0sInNjb3BlIjoiY29uc3VtZXItbGlzdDpzdG9wczphbGwtc3RvcHMiLCJzb3J0IjpbInN0b3AtbnVtYmVyOm51bGwiLCJzdG9wLW51bWJlciIsIm5hbWUiLCJpZCJdLCJ2ZXJzaW9uIjoxfQ.Xq2rRTwSbhFk87_MbE_pH5rw0C6dLWShygnYcAxwlxs",
  "prevCursor": null,
  "anchor": "eyJkaXJlY3Rpb24iOiJmcm9tIiwiZmlsdGVycyI6ImIyM2U5NDk4NDc1ZTA1ZmFmZjU3NTBmMzkwZDQ3ZTlhN2ZiZmQ0OTViMGVlYmU3ODU2OWQ5OGYxN2ZhZDNjNTIiLCJwb3NpdGlvbiI6WyIwIiwiODUwMDAwNCIsIlNlbHZhLCB2aWEgQWxwc3Ugc3B2LiIsIjY1ODNlOGM5LTU4MmMtNGJjNS1iMTEzLWRiZGJjYzMxYTQ0YSJdLCJzY29wZSI6ImNvbnN1bWVyLWxpc3Q6c3RvcHM6YWxsLXN0b3BzIiwic29ydCI6WyJzdG9wLW51bWJlcjpudWxsIiwic3RvcC1udW1iZXIiLCJuYW1lIiwiaWQiXSwidmVyc2lvbiI6MX0.JvqCknm2cJdxKet5Qn-csSed-VGI0kJdJgpKM6_DYSI",
  "totalCount": 2443,
  "startIndex": 0
}

The snapshot holds 2,443 stops; that is not a product limit. List pages hold 1–100 objects, default 20. Follow nextCursor with the same workspace, list and filters, URL-encoding the cursor as one value. prevCursor goes back and anchor reopens the page. Counts are null unless requested. For an extract that must stay fixed across pages, select a publication.

Now add the declared operator parameter:

GET /api/consumer/stops/v1/lists/all-stops?workspace=graubuenden&operator=MGB-fo&pageSize=1&includeTotal=true HTTP/1.1
Host: <instance>
Authorization: Bearer <consumer-token>
Accept: application/json
HTTP/1.1 200 OK
Content-Type: application/json
RDM-Workspace: graubuenden
{
  "items": [
    {
      "objectType": "Stop",
      "id": "8d90eede-23cf-47c1-8dac-cb37956f5fd5",
      "code": "ch:1:sloid:5173",
      "name": "Tschamut-Selva",
      "validFrom": "2021-04-01",
      "validTo": null,
      "stopNumber": 8505173,
      "abbreviation": "TSSE",
      "fsoNumber": null,
      "latitude": "46.65674442039232",
      "longitude": "8.709084193690385",
      "height": "1701.3",
      "sboid": null,
      "parent": {
        "objectType": "Municipality",
        "id": "06073bf3-cb29-475e-a87a-8fc6dbb8b8cc",
        "code": null,
        "name": "Tujetsch"
      },
      "path": "Graubünden/Surselva/Tujetsch",
      "operator": {
        "id": "f94ef862-2a95-4675-9e31-6b1d0a03317f",
        "code": "MGB-fo",
        "name": "Matterhorn Gotthard Bahn (fo)",
        "localName": null,
        "isPrimary": null
      },
      "modes": [
        {
          "id": "0f61601d-ec0c-4944-bab9-cf0d1d8665a9",
          "code": "TRAIN",
          "name": "Train"
        }
      ],
      "systemCodes": [
        {
          "system": "Wikidata: stations",
          "systemKey": "wikidata-stations",
          "code": "Q33467326",
          "name": "Q33467326 Tschamut-Selva"
        }
      ],
      "translations": []
    }
  ],
  "workspace": "graubuenden",
  "publication": null,
  "pageSize": 1,
  "nextCursor": "eyJmaWx0ZXJzIjoiNTRhMTExMzQxODIzZjk3NWYzNjkyNWMzZTEwMTk2ZDNiNjg4ZWY2OGQ1YWVkZjAyNGMxZGE1YTBhNmU5NjFmOCIsInBvc2l0aW9uIjpbIjAiLCI4NTA1MTczIiwiVHNjaGFtdXQtU2VsdmEiLCI4ZDkwZWVkZS0yM2NmLTQ3YzEtOGRhYy1jYjM3OTU2ZjVmZDUiXSwic2NvcGUiOiJjb25zdW1lci1saXN0OnN0b3BzOmFsbC1zdG9wcyIsInNvcnQiOlsic3RvcC1udW1iZXI6bnVsbCIsInN0b3AtbnVtYmVyIiwibmFtZSIsImlkIl0sInZlcnNpb24iOjF9.1v9cIpsLdk52jHId-gxF6o2ZOCtL2rUovcSK_qeVVxo",
  "prevCursor": null,
  "anchor": "eyJkaXJlY3Rpb24iOiJmcm9tIiwiZmlsdGVycyI6IjU0YTExMTM0MTgyM2Y5NzVmMzY5MjVjM2UxMDE5NmQzYjY4OGVmNjhkNWFlZGYwMjRjMWRhNWEwYTZlOTYxZjgiLCJwb3NpdGlvbiI6WyIwIiwiODUwNTE3MyIsIlRzY2hhbXV0LVNlbHZhIiwiOGQ5MGVlZGUtMjNjZi00N2MxLThkYWMtY2IzNzk1NmY1ZmQ1Il0sInNjb3BlIjoiY29uc3VtZXItbGlzdDpzdG9wczphbGwtc3RvcHMiLCJzb3J0IjpbInN0b3AtbnVtYmVyOm51bGwiLCJzdG9wLW51bWJlciIsIm5hbWUiLCJpZCJdLCJ2ZXJzaW9uIjoxfQ.8FyXbvb1X-LjSKkbpn39MjxS1xGXaCaxFkbpxrQDCNc",
  "totalCount": 13,
  "startIndex": 0
}

There are 13 reference stops for this operator. The parameter narrows the existing list; it does not create another route. Use the cursor from this filtered answer, rather than the unfiltered one.

Look up a stop number

Section titled “Look up a stop number”

XREF adds a score to the same business object. Asking for exactly one answer returns the untied top match directly. A tied top score is an ambiguity to resolve, rather than permission to choose the first record.

GET /api/consumer/stops/v1/xref?workspace=graubuenden&query=8505173&expect=one HTTP/1.1
Host: <instance>
Authorization: Bearer <consumer-token>
Accept: application/json
HTTP/1.1 200 OK
Content-Type: application/json
RDM-Workspace: graubuenden
{
  "objectType": "Stop",
  "id": "8d90eede-23cf-47c1-8dac-cb37956f5fd5",
  "code": "ch:1:sloid:5173",
  "name": "Tschamut-Selva",
  "validFrom": "2021-04-01",
  "validTo": null,
  "stopNumber": 8505173,
  "abbreviation": "TSSE",
  "fsoNumber": null,
  "latitude": "46.65674442039232",
  "longitude": "8.709084193690385",
  "height": "1701.3",
  "sboid": null,
  "parent": {
    "objectType": "Municipality",
    "id": "06073bf3-cb29-475e-a87a-8fc6dbb8b8cc",
    "code": null,
    "name": "Tujetsch"
  },
  "path": "Graubünden/Surselva/Tujetsch",
  "operator": {
    "id": "f94ef862-2a95-4675-9e31-6b1d0a03317f",
    "code": "MGB-fo",
    "name": "Matterhorn Gotthard Bahn (fo)",
    "localName": null,
    "isPrimary": null
  },
  "modes": [
    {
      "id": "0f61601d-ec0c-4944-bab9-cf0d1d8665a9",
      "code": "TRAIN",
      "name": "Train"
    }
  ],
  "systemCodes": [
    {
      "system": "Wikidata: stations",
      "systemKey": "wikidata-stations",
      "code": "Q33467326",
      "name": "Q33467326 Tschamut-Selva"
    }
  ],
  "translations": [],
  "matchScore": 900
}

Without expect=one, XREF returns a page with results, query, workspace, publication and paging fields. See the complete scored page and system-code crosswalk.

Resolve several inputs

Section titled “Resolve several inputs”

Batch resolution is a read expressed as POST. Each item asks by query or by ID; the result keeps input order and the supplied row reference. This example’s second code is the deliberately unmapped fictional Regional ticketing code:

POST /api/consumer/stops/v1/resolve?workspace=graubuenden HTTP/1.1
Host: <instance>
Authorization: Bearer <consumer-token>
Accept: application/json
Content-Type: application/json


{
  "defaults": {
    "mode": "TRAIN"
  },
  "items": [
    {
      "ref": "row-1",
      "query": "8505173"
    },
    {
      "ref": "row-2",
      "query": "T-9999"
    }
  ]
}
HTTP/1.1 200 OK
Content-Type: application/json
RDM-Workspace: graubuenden
{
  "items": [
    {
      "index": 0,
      "ref": "row-1",
      "status": "found",
      "object": {
        "objectType": "Stop",
        "id": "8d90eede-23cf-47c1-8dac-cb37956f5fd5",
        "code": "ch:1:sloid:5173",
        "name": "Tschamut-Selva",
        "validFrom": "2021-04-01",
        "validTo": null,
        "stopNumber": 8505173,
        "abbreviation": "TSSE",
        "fsoNumber": null,
        "latitude": "46.65674442039232",
        "longitude": "8.709084193690385",
        "height": "1701.3",
        "sboid": null,
        "parent": {
          "objectType": "Municipality",
          "id": "06073bf3-cb29-475e-a87a-8fc6dbb8b8cc",
          "code": null,
          "name": "Tujetsch"
        },
        "path": "Graubünden/Surselva/Tujetsch",
        "operator": {
          "id": "f94ef862-2a95-4675-9e31-6b1d0a03317f",
          "code": "MGB-fo",
          "name": "Matterhorn Gotthard Bahn (fo)",
          "localName": null,
          "isPrimary": null
        },
        "modes": [
          {
            "id": "0f61601d-ec0c-4944-bab9-cf0d1d8665a9",
            "code": "TRAIN",
            "name": "Train"
          }
        ],
        "systemCodes": [
          {
            "system": "Wikidata: stations",
            "systemKey": "wikidata-stations",
            "code": "Q33467326",
            "name": "Q33467326 Tschamut-Selva"
          }
        ],
        "translations": [],
        "matchScore": 900
      }
    },
    {
      "index": 1,
      "ref": "row-2",
      "status": "not_found",
      "error": {
        "code": "NO_MATCH",
        "message": "No object matches the query"
      }
    }
  ],
  "workspace": "graubuenden",
  "publication": null,
  "counts": {
    "found": 1,
    "notFound": 1,
    "ambiguous": 0,
    "rejected": 0
  }
}

HTTP success does not mean every input resolved. Keep each outcome, including not found, ambiguous and rejected. For a file, follow Resolve a file of codes.

Reuse an unchanged answer

Section titled “Reuse an unchanged answer”

Read the ETag header from the earlier object GET and save it with that body. The captured header is W/"aa0a706f7657c2adb5a7:1". Repeat the identical request with the complete value, including W/ and both quotes. Use your own response header rather than a literal placeholder:

GET /api/consumer/stops/v1/objects/8d90eede-23cf-47c1-8dac-cb37956f5fd5?workspace=graubuenden HTTP/1.1
Host: <instance>
Authorization: Bearer <consumer-token>
Accept: application/json
If-None-Match: W/"aa0a706f7657c2adb5a7:1"

If the saved tag still matches, the conditional response is:

HTTP/1.1 304 Not Modified
RDM-Workspace: graubuenden
ETag: "aa0a706f7657c2adb5a7:1"

A matching-tag 304 has no response body; retain the cached answer. A 200 response replaces the body and tag together. A live tag can change after another workspace write, even if this stop looks the same.

Correct a request error

Section titled “Correct a request error”

The declaration offers all-stops, not no-such-list:

GET /api/consumer/stops/v1/lists/no-such-list?workspace=graubuenden HTTP/1.1
Host: <instance>
Authorization: Bearer <consumer-token>
Accept: application/json
HTTP/1.1 404 Not Found
Content-Type: application/json
{
  "error": {
    "code": "LIST_NOT_FOUND",
    "message": "List 'no-such-list' not found"
  }
}

Correct the name from the workspace’s contract. An error is not an empty collection.

Follow the declared event

Section titled “Follow the declared event”

The declaration above enables stops-changed. The response below reports the creation of Selva, via Alpsu spv. by an import job at position 207. Although the request starts after 63, the first matching event is later. The captured head is 8986 and caughtUp is false; continue with the returned cursor to read the remaining events.

GET /api/consumer/stops/v1/events?workspace=graubuenden&after=63&event=stops-changed&pageSize=1&payload=identity HTTP/1.1
Host: <instance>
Authorization: Bearer <consumer-token>
Accept: application/json
HTTP/1.1 200 OK
Content-Type: application/json
RDM-Workspace: graubuenden
{
  "items": [
    {
      "eventId": "a141f374-b312-9649-bd6f-b878fd2aacf5",
      "position": 207,
      "occurredAt": "2026-11-03T21:29:54.748509+00:00",
      "event": "stops-changed",
      "change": "created",
      "contractVersion": 1,
      "objectType": "Stop",
      "id": "6583e8c9-582c-4bc5-b113-dbdbcc31a44a",
      "code": "ch:1:sloid:4",
      "name": "Selva, via Alpsu spv.",
      "changed": [],
      "cause": {
        "kind": "job",
        "id": "b2984b17-a315-4fba-a2d5-e08432e86cfd"
      }
    }
  ],
  "workspace": "graubuenden",
  "pageSize": 1,
  "cursor": "eyJmaWx0ZXJzIjoiYWVhNmJjYzI4YmQxNTAzZWMwYWNiMjQ2NjVkNzUxMzFjNjhjYTJmMjA4ZTEwMTM2NzQ4MmNmOWUxODY5MTcwYyIsInBvc2l0aW9uIjpbIjIwNyIsIjEiXSwic2NvcGUiOiJjb25zdW1lci1ldmVudHM6c3RvcHM6Z3JhdWJ1ZW5kZW4iLCJzb3J0IjpbInBvc2l0aW9uIiwib3JkaW5hbCJdLCJ2ZXJzaW9uIjoxfQ.jE5ueunEtvaETHuI__-kBACi5xvxqymz6-tzSB9_x-w",
  "caughtUp": false,
  "headPosition": 8986,
  "earliestPosition": 1
}

Save the lasting cursor after processing the page; it can resume within a position containing several events. With payload=full, the event also includes the object read now and stateAt, the position at which it was composed. It is not a historical copy of the object at the event’s time. See the complete full event.

Receive the event at a webhook

Section titled “Receive the event at a webhook”

An administrator can separately create a subscription to this event. The model declaration does not register a receiver. Delivery needs the deployment’s webhook capability and a configured subscription; see Subscribe a webhook and verify it.

For identity payloads in RDM JSON format, one event per request, the receiver gets the following illustrative body for a separate name-update event; it is not a delivery captured from the feed above. It uses the public demonstration secret guide-example-only. The IDs, timestamp and signature are example values. The compact body has no trailing newline:

POST /refiroo-events HTTP/1.1
Host: receiver.example
Content-Type: application/json
User-Agent: rdm-engine
RDM-Delivery-Id: 85c0fa4d-c85c-4e2d-b788-24c8f3800fd8
RDM-Timestamp: 1793606400
RDM-Signature: sha256=fd32dc6d2633f1ac0cad65c9fbe0d61353a581e66655509d391d9708d3fe15a6
Content-Length: 516


{"deliveryId":"85c0fa4d-c85c-4e2d-b788-24c8f3800fd8","subscriptionId":"a7447804-c8c0-4e13-9a7f-117e7ec6ba15","consumerApi":"stops","contractVersion":1,"workspaceKey":"graubuenden","events":[{"eventId":"8b6b294b-ff1a-4bb8-898c-a2e412e64f71","position":64,"occurredAt":"2026-11-02T08:00:00+00:00","event":"stops-changed","change":"updated","contractVersion":1,"objectType":"Stop","id":"8d90eede-23cf-47c1-8dac-cb37956f5fd5","code":"ch:1:sloid:5173","name":"Tschamut-Selva","changed":["name"],"cause":{"kind":"user"}}]}

Verify RDM-Signature as HMAC-SHA256 of the timestamp text, a dot and the original body bytes, using the secret exactly as issued. Compare in constant time, reject stale timestamps under your receiver’s replay policy, then deduplicate using eventId. Store or queue accepted work durably before acknowledging with a 2xx. Do not parse and reserialize the JSON before verification. The verification example shows the code, including key rotation overlap. The dated sample must fail a live receiver’s freshness check; use its timestamp only when reproducing the example.

Find the contract on your instance

Section titled “Find the contract on your instance”

In the browser, Settings › Connections › Consumer APIs lists the selected workspace’s contracts and their documents. For the reference example, the authenticated index is /api/consumer?workspace=graubuenden; its entry points to /api/consumer/stops/v1/openapi.json?workspace=graubuenden. The starter instead uses the key rdm in a workspace running that model. Always inspect the intended workspace: installing a release alone does not activate it there.

The instance’s interactive API reference describes its actual declarations. For access and limits, read Consumer APIs; for changing the contract, read Model consumer APIs. A client needs a consumer grant in the chosen workspace. This contract is read-only; changes use the management integration.

Source: opentransportdata.swiss, Service Points (Didok), Federal Office of Transport / SBB, snapshot 2026-11-02. Wikidata, CC0. Regional ticketing and its codes are fictional.