Create a comment

API v3 is in preview

Endpoints and response shapes can change before general availability. API v2 is unchanged.

POST https://app.honeybadger.io/v3/projects/{project_id}/faults/{fault_id}/comments

Required scope faults:write

Adds a comment to a fault.

Example request

curl -X POST "https://app.honeybadger.io/v3/projects/$PROJECT_ID/faults/$FAULT_ID/comments" \
  -H "Authorization: Bearer $HONEYBADGER_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
  "body": "Rolled back, watching for recurrence."
}'

Parameters

2

Path parameters

Field	Type	Description
project_id required	string	Project ID.
fault_id required	string	Fault ID.

Request body

Field	Type	Description
body required	string	The comment text. @mentions notify the named project members.

Responses

1

201 Comment created

Example payload

{
  "data": {
    "id": "Cm7pLx",
    "fault_id": "12345",
    "author": {
      "id": "Uz4wKm",
      "name": "Jane Smith",
      "email": "jane@example.com"
    },
    "body": "Fixed in the 2.4.1 release.",
    "source": "web",
    "event": null,
    "created_at": "2026-01-01T00:00:00Z",
    "links": {
      "web": "https://app.honeybadger.io/projects/Xk9mZp"
    }
  },
  "meta": {
    "request_id": "6f1c2b0e-8d4a-4f6e-9b2a-3c5d7e9f1a2b"
  }
}

Response schema15

Field	Type	Description
data required	object	A comment on a fault.
data.id required	string
data.fault_id required	string	ID of the fault this comment belongs to.
data.author required	object | null	Author of the comment.
data.author.id	string | null	ID of the author.
data.author.name	string | null	Name of the author.
data.author.email	string | null	Email of the author; null for authors known only by name, such as an account token or name-only feedback.
data.body required	string | null	Comment body text.
data.source required	string	Where the comment was made: web, web-batch (a bulk action in the web app), api, email (a reply to a notification email), feedback (a user feedback form) or unknown.
data.event required	string | null	Event type associated with the comment.
data.created_at required	date-time	When the comment was created.
data.links required	object	Links into the Honeybadger web UI.
data.links.web required	uri	The resource's page in the Honeybadger web UI, as an absolute URL. Resources without a page, such as outages and deploys, don't have links. For a project provisioned through Heroku, error, notice and comment links go through Heroku's single sign-on.
meta	object
meta.request_id	string	Unique identifier for the request, for correlating with support.

Errors

5

400 Bad Request

A query parameter is malformed or outside its allowed values. error.details names the parameter.

Example payload

{
  "error": {
    "code": "invalid_parameter",
    "message": "unmapped must be true or false",
    "details": [
      {
        "field": "unmapped",
        "message": "must be true or false"
      }
    ]
  },
  "meta": {
    "request_id": "abc123"
  }
}

Response schema6

Field	Type	Description
error required	object
error.code required	string	Machine-readable code. Branch on this, not the message. Allowed values: unauthorized, unsupported_auth_scheme, credential_in_query, access_denied, insufficient_scope, requires_user_token, project_restricted, account_inactive, account_parked, feature_unavailable, not_found, validation_error, delete_failed, limit_reached, rate_limit_exceeded, concurrent_request, streams_provisioning, ingestion_key_not_accepted, maintenance_mode, invalid_parameter, forbidden_attributes, service_unavailable, ambiguous_account, fault_merged.
error.message required	string	Human-readable explanation.
error.details	array<object> | object	A list of {field, message} on validation_error and invalid_parameter, and on feature_unavailable or limit_reached when one field caused the refusal; {required_scope, token_scopes} on insufficient_scope; {merged_into, location} on fault_merged. Absent when there's nothing to add.
meta	object
meta.request_id	string	Unique identifier for the request, for correlating with support.

401 Unauthorized

The credential is missing, invalid, expired or revoked (unauthorized), or was sent in a way v3 doesn’t accept (see the examples).

Example payload: unauthorized (Missing, malformed, expired or revoked credential)

{
  "error": {
    "code": "unauthorized",
    "message": "Access denied"
  },
  "meta": {
    "request_id": "abc123"
  }
}

Example payload: unsupported_auth_scheme (Sent as HTTP basic, which v3 does not accept)

{
  "error": {
    "code": "unsupported_auth_scheme",
    "message": "Send the credential as `Authorization: Bearer <token>`; v3 does not accept HTTP basic"
  },
  "meta": {
    "request_id": "abc123"
  }
}

Example payload: credential_in_query (Sent as the `auth_token` query parameter)

{
  "error": {
    "code": "credential_in_query",
    "message": "Credentials must be sent in the Authorization header"
  },
  "meta": {
    "request_id": "abc123"
  }
}

Response schema6

Field	Type	Description
error required	object
error.code required	string	Machine-readable code. Branch on this, not the message. Allowed values: unauthorized, unsupported_auth_scheme, credential_in_query, access_denied, insufficient_scope, requires_user_token, project_restricted, account_inactive, account_parked, feature_unavailable, not_found, validation_error, delete_failed, limit_reached, rate_limit_exceeded, concurrent_request, streams_provisioning, ingestion_key_not_accepted, maintenance_mode, invalid_parameter, forbidden_attributes, service_unavailable, ambiguous_account, fault_merged.
error.message required	string	Human-readable explanation.
error.details	array<object> | object	A list of {field, message} on validation_error and invalid_parameter, and on feature_unavailable or limit_reached when one field caused the refusal; {required_scope, token_scopes} on insufficient_scope; {merged_into, location} on fault_merged. Absent when there's nothing to add.
meta	object
meta.request_id	string	Unique identifier for the request, for correlating with support.

403 Forbidden

The credential isn’t allowed to do this. error.code says why. An account or project the credential doesn’t cover is 404 not_found, not 403.

Example payload: access_denied (The credential isn't allowed to do this to this record)

{
  "error": {
    "code": "access_denied",
    "message": "Access denied"
  },
  "meta": {
    "request_id": "abc123"
  }
}

Example payload: insufficient_scope (The credential lacks the permission this endpoint requires)

{
  "error": {
    "code": "insufficient_scope",
    "message": "Insufficient scope",
    "details": {
      "required_scope": "faults:write",
      "token_scopes": [
        "faults:read",
        "insights:read"
      ]
    }
  },
  "meta": {
    "request_id": "abc123"
  }
}

Example payload: requires_user_token (The endpoint records who acted, and an account token has nobody)

{
  "error": {
    "code": "requires_user_token",
    "message": "This endpoint records the person who acted, so it requires a user credential rather than an account token"
  },
  "meta": {
    "request_id": "abc123"
  }
}

Example payload: project_restricted (A project-restricted credential cannot create a project)

{
  "error": {
    "code": "project_restricted",
    "message": "Project-restricted tokens cannot create projects"
  },
  "meta": {
    "request_id": "abc123"
  }
}

Response schema6

Field	Type	Description
error required	object
error.code required	string	Machine-readable code. Branch on this, not the message. Allowed values: unauthorized, unsupported_auth_scheme, credential_in_query, access_denied, insufficient_scope, requires_user_token, project_restricted, account_inactive, account_parked, feature_unavailable, not_found, validation_error, delete_failed, limit_reached, rate_limit_exceeded, concurrent_request, streams_provisioning, ingestion_key_not_accepted, maintenance_mode, invalid_parameter, forbidden_attributes, service_unavailable, ambiguous_account, fault_merged.
error.message required	string	Human-readable explanation.
error.details	array<object> | object	A list of {field, message} on validation_error and invalid_parameter, and on feature_unavailable or limit_reached when one field caused the refusal; {required_scope, token_scopes} on insufficient_scope; {merged_into, location} on fault_merged. Absent when there's nothing to add.
meta	object
meta.request_id	string	Unique identifier for the request, for correlating with support.

404 Not Found

Resource not found

Example payload

{
  "error": {
    "code": "not_found",
    "message": "Resource not found"
  },
  "meta": {
    "request_id": "abc123"
  }
}

Response schema6

Field	Type	Description
error required	object
error.code required	string	Machine-readable code. Branch on this, not the message. Allowed values: unauthorized, unsupported_auth_scheme, credential_in_query, access_denied, insufficient_scope, requires_user_token, project_restricted, account_inactive, account_parked, feature_unavailable, not_found, validation_error, delete_failed, limit_reached, rate_limit_exceeded, concurrent_request, streams_provisioning, ingestion_key_not_accepted, maintenance_mode, invalid_parameter, forbidden_attributes, service_unavailable, ambiguous_account, fault_merged.
error.message required	string	Human-readable explanation.
error.details	array<object> | object	A list of {field, message} on validation_error and invalid_parameter, and on feature_unavailable or limit_reached when one field caused the refusal; {required_scope, token_scopes} on insufficient_scope; {merged_into, location} on fault_merged. Absent when there's nothing to add.
meta	object
meta.request_id	string	Unique identifier for the request, for correlating with support.

422 Unprocessable Content

Validation error

Example payload

{
  "error": {
    "code": "validation_error",
    "message": "Name can't be blank",
    "details": [
      {
        "field": "name",
        "message": "can't be blank"
      }
    ]
  },
  "meta": {
    "request_id": "abc123"
  }
}

Response schema6

Field	Type	Description
error required	object
error.code required	string	Machine-readable code. Branch on this, not the message. Allowed values: unauthorized, unsupported_auth_scheme, credential_in_query, access_denied, insufficient_scope, requires_user_token, project_restricted, account_inactive, account_parked, feature_unavailable, not_found, validation_error, delete_failed, limit_reached, rate_limit_exceeded, concurrent_request, streams_provisioning, ingestion_key_not_accepted, maintenance_mode, invalid_parameter, forbidden_attributes, service_unavailable, ambiguous_account, fault_merged.
error.message required	string	Human-readable explanation.
error.details	array<object> | object	A list of {field, message} on validation_error and invalid_parameter, and on feature_unavailable or limit_reached when one field caused the refusal; {required_scope, token_scopes} on insufficient_scope; {merged_into, location} on fault_merged. Absent when there's nothing to add.
meta	object
meta.request_id	string	Unique identifier for the request, for correlating with support.