> ## Documentation Index > Fetch the complete documentation index at: https://docs.sazabi.com/llms.txt > Use this file to discover all available pages before exploring further. # Get a signal > Get one of a project's signals by id. ## OpenAPI ````yaml /openapi.json get /signals/{signalId} openapi: 3.1.1 info: title: Sazabi Public API version: 1.0.0 description: > Public REST API for Sazabi. Authenticate using a secret API key in the Authorization header. ## Pagination This API uses two pagination strategies depending on the endpoint type: ### Cursor-Based Pagination (List Endpoints) List endpoints (threads, messages, keys) use cursor-based pagination for efficient, consistent results: - **Parameters**: `limit` (items per page, default 50, max 100), `cursor` (opaque pagination token) - **Response**: Includes `nextCursor` field - pass this as `cursor` in the next request - **End of results**: When `nextCursor` is `null`, there are no more results - **Example**: `GET /v1/threads?limit=20&cursor=01234567-89ab-cdef-0123-456789abcdef` ### Page-Based Pagination (Search Endpoints) Search endpoints use page-based pagination due to the underlying search engine: - **Parameters**: `limit` (items per page, default 20, max 100), `page` (1-indexed page number) - **Response**: Includes `pagination` object with `page`, `limit`, `totalResults`, `totalPages` - **Example**: `GET /v1/search/threads?q=error&limit=10&page=2` servers: - url: https://api.sazabi.com/v1 description: Production security: [] paths: /signals/{signalId}: get: tags: - Signals summary: Get a signal description: Get one of a project's signals by id. operationId: signals.get parameters: - name: signalId in: path required: true schema: type: string format: uuid description: The signal's id. - name: projectId in: query schema: type: string format: uuid description: >- Project to read signals for. Auto-filled from CLI and SDK context when omitted. allowEmptyValue: true allowReserved: true responses: '200': description: OK content: application/json: schema: type: object properties: signal: anyOf: - type: object properties: id: type: string format: uuid description: The signal's id. projectId: type: string format: uuid createdAt: type: string format: date-time description: When the detector reported it. type: const: new_error payload: type: object properties: timestamp: type: string format: date-time description: >- When the customer's system emitted the error log. serviceName: anyOf: - type: string - type: 'null' description: >- The service that emitted the error log, when known. severity: anyOf: - type: string - type: 'null' description: The error log's severity, when known. body: type: string description: >- The error log line as received, truncated to 8 KiB. required: - timestamp - serviceName - severity - body additionalProperties: false description: >- A `new_error` signal's payload: the error log itself. required: - id - projectId - createdAt - type - payload - type: object properties: id: type: string format: uuid description: The signal's id. projectId: type: string format: uuid createdAt: type: string format: date-time description: When the detector reported it. type: const: sensor payload: anyOf: - type: object properties: transition: const: firing sensor: type: object properties: id: type: string description: The sensor's id. name: type: string description: The sensor's name. description: anyOf: - type: string - type: 'null' description: >- What the sensor watches and why, when it says. required: - id - name - description description: >- The sensor, as it was defined when it sent the signal. group: anyOf: - const: '*' - type: object propertyNames: type: string additionalProperties: {} description: >- A group's values by column: the sensor query's GROUP BY columns, or a judged item's columns. Empty for a query without GROUP BY. description: >- The group whose state changed, or `*`: the summary that stands for the groups past the sensor's 10 signals in a minute. groups: type: object properties: count: type: integer minimum: -9007199254740991 maximum: 9007199254740991 description: How many groups `*` stands for. top: type: array items: type: object properties: group: type: object propertyNames: type: string additionalProperties: {} description: >- A group's values by column: the sensor query's GROUP BY columns, or a judged item's columns. Empty for a query without GROUP BY. score: anyOf: - type: number - type: 'null' required: - group - score description: >- The groups with the highest scores, at most 10. required: - count - top description: The groups a `*` firing stands for. since: type: string format: date-time description: >- The end of the minute the change happened in. detection: type: object properties: condition: type: string description: The sensor's condition, as written. observed: anyOf: - type: number - type: 'null' description: >- The value the condition compared, over the window. past: anyOf: - type: number - type: 'null' description: >- What it usually is: the past windows' median, or the one. band: anyOf: - type: array minItems: 2 maxItems: 2 items: type: number - type: 'null' description: >- The past windows' spread, scaled to the window. test: anyOf: - type: string - type: 'null' description: >- The statistical test that judged the gap, by name. score: anyOf: - type: number - type: 'null' description: >- How unlikely the gap is when nothing is wrong, as -log10 of its chance. volume: anyOf: - type: number - type: 'null' description: >- How many lines or requests the window held. answers: type: object propertyNames: type: string additionalProperties: {} description: A judged item's answers, by question. samples: type: array items: type: object properties: at: type: string description: When the line was logged. message: type: string description: The line's message. required: - at - message description: >- Up to 3 lines that matched, for a log match. description: >- What moved and by how much, against the past windows. evidence: type: object properties: window: type: array minItems: 2 maxItems: 2 items: type: string format: date-time description: >- The window evaluated: its start and its end. query: type: string description: >- A query for the log lines behind the change, on `logs`. required: - window - query description: Where to find the lines behind the change. required: - transition - sensor - group - since - type: object properties: transition: const: resolved sensor: type: object properties: id: type: string description: The sensor's id. name: type: string description: The sensor's name. description: anyOf: - type: string - type: 'null' description: >- What the sensor watches and why, when it says. required: - id - name - description description: >- The sensor, as it was defined when it sent the signal. group: anyOf: - const: '*' - type: object propertyNames: type: string additionalProperties: {} description: >- A group's values by column: the sensor query's GROUP BY columns, or a judged item's columns. Empty for a query without GROUP BY. description: >- The group whose state changed, or `*`: the summary that stands for the groups past the sensor's 10 signals in a minute. since: type: string format: date-time description: >- The end of the minute the change happened in. reason: enum: - passing - updated - deleted type: string description: >- `passing`: the condition passed for the sensor's `resolve_after`. `updated`: the sensor's query changed. `deleted`: the sensor was deleted. detection: type: object properties: condition: type: string description: The sensor's condition, as written. observed: anyOf: - type: number - type: 'null' description: >- The value the condition compared, over the window. past: anyOf: - type: number - type: 'null' description: >- What it usually is: the past windows' median, or the one. band: anyOf: - type: array minItems: 2 maxItems: 2 items: type: number - type: 'null' description: >- The past windows' spread, scaled to the window. test: anyOf: - type: string - type: 'null' description: >- The statistical test that judged the gap, by name. score: anyOf: - type: number - type: 'null' description: >- How unlikely the gap is when nothing is wrong, as -log10 of its chance. volume: anyOf: - type: number - type: 'null' description: >- How many lines or requests the window held. answers: type: object propertyNames: type: string additionalProperties: {} description: A judged item's answers, by question. samples: type: array items: type: object properties: at: type: string description: When the line was logged. message: type: string description: The line's message. required: - at - message description: >- Up to 3 lines that matched, for a log match. description: >- What moved and by how much, against the past windows. evidence: type: object properties: window: type: array minItems: 2 maxItems: 2 items: type: string format: date-time description: >- The window evaluated: its start and its end. query: type: string description: >- A query for the log lines behind the change, on `logs`. required: - window - query description: Where to find the lines behind the change. required: - transition - sensor - group - since - reason - type: object properties: transition: const: stopped sensor: type: object properties: id: type: string description: The sensor's id. name: type: string description: The sensor's name. description: anyOf: - type: string - type: 'null' description: >- What the sensor watches and why, when it says. required: - id - name - description description: >- The sensor, as it was defined when it sent the signal. since: type: string format: date-time description: >- The end of the minute the change happened in. reason: enum: - scan_budget - query_error type: string description: >- `scan_budget`: it was the costliest sensor on `logs` of a project past its hourly scan budget. `query_error`: ClickHouse refused its query. message: type: string description: ClickHouse's error, for `query_error`. required: - transition - sensor - since - reason - type: object properties: transition: const: reset since: type: string format: date-time description: >- The end of the minute the change happened in. required: - transition - since description: >- A `sensor` signal's payload: one change of state of one group of a sensor. `firing` and `resolved` name the group; `stopped` means the region stopped evaluating the sensor until its query changes; `reset` means the region lost the project's sensor state, so firings from before it get no `resolved`. required: - id - projectId - createdAt - type - payload description: >- A signal: a generic envelope plus a payload typed by `type`. More types will come; handle unknown ones with a default case. required: - signal ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.