Headers

• Commune-Version string(date)

  The contract version this request is written against, as a release date (YYYY-MM-DD). Omitting the header pins the request to the version that was current when the API key was issued, so an integration keeps working when a newer version ships. An unknown value answers 400 with invalid_version.

Query parameters

• cursor string

  The pagination.next_cursor value from the previous page. Omit it to read the first page. A cursor is opaque, is only valid for the same operation with the same filters, and is not a durable identifier.

  Maximum length is 512.

• limit integer

  How many items to return in this page. This is a page size, not an offset. Fewer items than requested may come back and that does not mean the collection is exhausted, only an absent next_cursor does.

  Minimum value is 1, maximum value is 100. Default value is 20.

• expand string

  Comma separated list of relationship paths to inline in the response. Unexpanded relationships are returned as a reference object carrying only id and object. Each operation documents the paths it accepts, and an unknown path answers 400. Nested paths use a dot, for example article.newsletter.

  One accepted path is not a relationship. ?expand=content on GET /articles/{article} adds the Markdown rendition of the body beside the HTML one. It is the same trade the parameter always offers, a fuller response for a larger one, over a property that has more than one representation rather than over a reference.

• fields string

  Comma separated allow list of top level properties to return on each object, so a client can trim a response it does not need in full. id and object are always returned. An unknown property name answers 400. Properties omitted by an operation, such as content on any article list, cannot be brought back with fields.

  A trimmed body is a subset of the schema this operation declares, and a property that schema marks required is absent when it was not asked for. That is the point of the parameter, so a client that validates responses against the schema either sends no fields or relaxes required.

• esp string

  Return only newsletters published through this provider. Repeat the parameter to accept several.

  Values are native, beehiiv, buttondown, ghost, kit, mailchimp, mailerlite, rss, or substack.

• handle string

  Return only the newsletter with this handle. A handle is unique across Commune, so this answers zero or one item. Prefer GET /newsletters/{newsletter} when you want a single object and a 404 rather than an empty page.

Responses

• 200 application/json

  A page of newsletters.

  Hide response attributes Show response attributes object

  • object string Required

    Always list, so a response is self describing.

    Value is list.

  • data array Required

    This page of items, in the order the operation documents.

  • pagination object Required

    Cursor pagination state. Commune never exposes an offset or a page number: a collection is a moving window, and an offset silently skips or repeats items when the window shifts between two requests.

    Additional properties are NOT allowed.

    Hide pagination attributes Show pagination attributes object

    • has_more boolean Required

      Whether another page exists. When false, next_cursor is null.

    • next_cursor string | null Required

      Pass this back as ?cursor= to read the next page. null on the last page. Opaque, and valid only for the same operation with the same filters.

• 400 application/json

  The request was malformed: an unknown query parameter, an unparseable cursor, an unknown expand path, or an unrecognised Commune-Version.

  Hide response attribute Show response attribute object

  • error object Required

    Additional properties are NOT allowed.

    Hide error attributes Show error attributes object

    • code string Required

      The stable, machine readable reason a request failed. New codes may be added in a minor version, so treat an unrecognised code as a generic failure of its HTTP status class.

      Values are bad_request, invalid_version, unauthorized, forbidden, insufficient_scope, payment_required, not_found, conflict, unprocessable, rate_limited, or internal_error.

    • message string Required

      A human readable sentence describing what went wrong. Written for a developer reading a log, not for an end user. Do not branch on it, branch on code.

    • param string

      The query, path or body parameter the error is attributed to, when the error is attributable to exactly one. Absent otherwise.

    • allowed_values array[string]

      Everything param would have accepted, when what it accepts is a finite set. Absent when it is not: a cursor, an identifier or a numeric range has nothing to enumerate, and an empty array would read as "nothing is allowed".

      It is deliberately redundant with message, which names the same values in prose. The array is what a program branches on and the sentence is what a model reads, and a caller correcting a request has to be able to do it from this one response without opening a reference page.

      On an unknown parameter name rather than an unknown value, this carries the parameter names the operation does accept, since that is the set the caller has to pick from.

      On an insufficient_scope failure there is no parameter at fault and param is absent, and this carries the scopes that would have been accepted instead.

    • request_id string

      Identifier for this request, echoed in the Commune-Request-Id response header. Quote it in support requests.

    • docs_url string(uri)

      Link to the reference page for this error code.

• 401 application/json

  No API key was presented, or the key is unknown, revoked or expired.

  All four answer identically, down to the wording. Saying that a key was revoked rather than never issued confirms to whoever is holding the string that it was once real, which a legitimate caller does not need and a thief should not get.

  Hide headers attribute Show headers attribute

  • WWW-Authenticate string

    The authentication scheme this API accepts. Always Bearer realm="Commune API"; there is no second scheme and no query-parameter fallback, because a credential that can travel in a URL ends up in access logs and referer headers.

  Hide response attribute Show response attribute object

  • error object Required

    Additional properties are NOT allowed.

    Hide error attributes Show error attributes object

    • code string Required

      The stable, machine readable reason a request failed. New codes may be added in a minor version, so treat an unrecognised code as a generic failure of its HTTP status class.

      Values are bad_request, invalid_version, unauthorized, forbidden, insufficient_scope, payment_required, not_found, conflict, unprocessable, rate_limited, or internal_error.

    • message string Required

      A human readable sentence describing what went wrong. Written for a developer reading a log, not for an end user. Do not branch on it, branch on code.

    • param string

      The query, path or body parameter the error is attributed to, when the error is attributable to exactly one. Absent otherwise.

    • allowed_values array[string]

      Everything param would have accepted, when what it accepts is a finite set. Absent when it is not: a cursor, an identifier or a numeric range has nothing to enumerate, and an empty array would read as "nothing is allowed".

      It is deliberately redundant with message, which names the same values in prose. The array is what a program branches on and the sentence is what a model reads, and a caller correcting a request has to be able to do it from this one response without opening a reference page.

      On an unknown parameter name rather than an unknown value, this carries the parameter names the operation does accept, since that is the set the caller has to pick from.

      On an insufficient_scope failure there is no parameter at fault and param is absent, and this carries the scopes that would have been accepted instead.

    • request_id string

      Identifier for this request, echoed in the Commune-Request-Id response header. Quote it in support requests.

    • docs_url string(uri)

      Link to the reference page for this error code.

• 429 application/json

  Too many requests. Back off and retry after the interval named by the Retry-After response header.

  Hide headers attribute Show headers attribute

  • Retry-After integer

    Seconds to wait before retrying.

    Minimum value is 1.

  Hide response attribute Show response attribute object

  • error object Required

    Additional properties are NOT allowed.

    Hide error attributes Show error attributes object

    • code string Required

      The stable, machine readable reason a request failed. New codes may be added in a minor version, so treat an unrecognised code as a generic failure of its HTTP status class.

      Values are bad_request, invalid_version, unauthorized, forbidden, insufficient_scope, payment_required, not_found, conflict, unprocessable, rate_limited, or internal_error.

    • message string Required

      A human readable sentence describing what went wrong. Written for a developer reading a log, not for an end user. Do not branch on it, branch on code.

    • param string

      The query, path or body parameter the error is attributed to, when the error is attributable to exactly one. Absent otherwise.

    • allowed_values array[string]

      Everything param would have accepted, when what it accepts is a finite set. Absent when it is not: a cursor, an identifier or a numeric range has nothing to enumerate, and an empty array would read as "nothing is allowed".

      It is deliberately redundant with message, which names the same values in prose. The array is what a program branches on and the sentence is what a model reads, and a caller correcting a request has to be able to do it from this one response without opening a reference page.

      On an unknown parameter name rather than an unknown value, this carries the parameter names the operation does accept, since that is the set the caller has to pick from.

      On an insufficient_scope failure there is no parameter at fault and param is absent, and this carries the scopes that would have been accepted instead.

    • request_id string

      Identifier for this request, echoed in the Commune-Request-Id response header. Quote it in support requests.

    • docs_url string(uri)

      Link to the reference page for this error code.

• 500 application/json

  Something failed inside Commune. The request may be retried.

  Hide response attribute Show response attribute object

  • error object Required

    Additional properties are NOT allowed.

    Hide error attributes Show error attributes object

    • code string Required

      The stable, machine readable reason a request failed. New codes may be added in a minor version, so treat an unrecognised code as a generic failure of its HTTP status class.

      Values are bad_request, invalid_version, unauthorized, forbidden, insufficient_scope, payment_required, not_found, conflict, unprocessable, rate_limited, or internal_error.

    • message string Required

      A human readable sentence describing what went wrong. Written for a developer reading a log, not for an end user. Do not branch on it, branch on code.

    • param string

      The query, path or body parameter the error is attributed to, when the error is attributable to exactly one. Absent otherwise.

    • allowed_values array[string]

      Everything param would have accepted, when what it accepts is a finite set. Absent when it is not: a cursor, an identifier or a numeric range has nothing to enumerate, and an empty array would read as "nothing is allowed".

      It is deliberately redundant with message, which names the same values in prose. The array is what a program branches on and the sentence is what a model reads, and a caller correcting a request has to be able to do it from this one response without opening a reference page.

      On an unknown parameter name rather than an unknown value, this carries the parameter names the operation does accept, since that is the set the caller has to pick from.

      On an insufficient_scope failure there is no parameter at fault and param is absent, and this carries the scopes that would have been accepted instead.

    • request_id string

      Identifier for this request, echoed in the Commune-Request-Id response header. Quote it in support requests.

    • docs_url string(uri)

      Link to the reference page for this error code.