> ## Documentation Index > Fetch the complete documentation index at: https://arizeai-433a7140.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Search spans with simple filters (no DSL) > Return spans within a project filtered by time range. Supports cursor-based pagination. ## OpenAPI ````yaml get /v1/projects/{project_identifier}/spans/otlpv1 openapi: 3.1.0 info: title: Arize-Phoenix REST API description: Schema for Arize-Phoenix REST API version: '1.0' servers: [] security: [] paths: /v1/projects/{project_identifier}/spans/otlpv1: get: tags: - spans summary: Search spans with simple filters (no DSL) description: >- Return spans within a project filtered by time range. Supports cursor-based pagination. operationId: spanSearch parameters: - name: project_identifier in: path required: true schema: type: string description: >- The project identifier: either project ID or project name. If using a project name, it cannot contain slash (/), question mark (?), or pound sign (#) characters. title: Project Identifier description: >- The project identifier: either project ID or project name. If using a project name, it cannot contain slash (/), question mark (?), or pound sign (#) characters. - name: cursor in: query required: false schema: anyOf: - type: string - type: 'null' description: Pagination cursor (Span Global ID) title: Cursor description: Pagination cursor (Span Global ID) - name: limit in: query required: false schema: type: integer maximum: 1000 exclusiveMinimum: 0 description: Maximum number of spans to return default: 100 title: Limit description: Maximum number of spans to return - name: start_time in: query required: false schema: anyOf: - type: string format: date-time - type: 'null' description: Inclusive lower bound time title: Start Time description: Inclusive lower bound time - name: end_time in: query required: false schema: anyOf: - type: string format: date-time - type: 'null' description: Exclusive upper bound time title: End Time description: Exclusive upper bound time - name: trace_id in: query required: false schema: anyOf: - items: type: string type: array - type: 'null' description: Filter by one or more trace IDs title: Trace Id description: Filter by one or more trace IDs - name: parent_id in: query required: false schema: anyOf: - type: string - type: 'null' description: Filter by parent span ID. Use "null" to get root spans only. title: Parent Id description: Filter by parent span ID. Use "null" to get root spans only. - name: name in: query required: false schema: anyOf: - items: type: string type: array - type: 'null' description: Filter by span name(s) title: Name description: Filter by span name(s) - name: status_code in: query required: false schema: anyOf: - items: type: string type: array - type: 'null' description: 'Filter by status code(s). Values: OK, ERROR, UNSET' title: Status Code description: 'Filter by status code(s). Values: OK, ERROR, UNSET' - name: attribute in: query required: false schema: anyOf: - items: type: string type: array - type: 'null' description: >- Filter spans by `key:value`. Key is a dot-path (e.g. `user.id`, `metadata.tier`). Value is JSON-parsed: `k:12345` is int, `k:true` is bool, otherwise string (`k:user-42`). To match a numeric- or boolean-looking STRING, JSON-quote it: `user.id:"12345"` (URL-encoded `%2212345%22`). Split is on the first `:` only, so values may contain colons (`session.id:sess:abc:123`, ISO timestamps). Repeat the param to AND filters. List-valued attributes (e.g. `tag.tags`) cannot be matched here. Returns 422 on malformed input (missing colon, empty key/value, or list/dict/null value). title: Attribute description: >- Filter spans by `key:value`. Key is a dot-path (e.g. `user.id`, `metadata.tier`). Value is JSON-parsed: `k:12345` is int, `k:true` is bool, otherwise string (`k:user-42`). To match a numeric- or boolean-looking STRING, JSON-quote it: `user.id:"12345"` (URL-encoded `%2212345%22`). Split is on the first `:` only, so values may contain colons (`session.id:sess:abc:123`, ISO timestamps). Repeat the param to AND filters. List-valued attributes (e.g. `tag.tags`) cannot be matched here. Returns 422 on malformed input (missing colon, empty key/value, or list/dict/null value). responses: '200': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/OtlpSpansResponseBody' '403': description: Forbidden content: text/plain: schema: type: string '404': content: text/plain: schema: type: string description: Not Found '422': description: Unprocessable Entity content: text/plain: schema: type: string components: schemas: OtlpSpansResponseBody: properties: data: items: $ref: '#/components/schemas/OtlpSpan' type: array title: Data next_cursor: anyOf: - type: string - type: 'null' title: Next Cursor type: object required: - data - next_cursor title: OtlpSpansResponseBody description: Paginated response where each span follows OTLP JSON structure. OtlpSpan: properties: attributes: anyOf: - items: $ref: '#/components/schemas/OtlpKeyValue' type: array - type: 'null' title: Attributes description: >- attributes is a collection of key/value pairs. Note, global attributes like server name can be set using the resource API. Examples of attributes: "/http/user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36" "/http/server_latency": 300 "example.com/myattribute": true "example.com/score": 10.239 The OpenTelemetry API specification further restricts the allowed value types: https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/common/README.md#attribute Attribute keys MUST be unique (it is not allowed to have more than one attribute with the same key). dropped_attributes_count: anyOf: - type: integer maximum: 4294967295 minimum: 0 - type: 'null' title: Dropped Attributes Count description: >- dropped_attributes_count is the number of attributes that were discarded. Attributes can be discarded because their keys are too long or because there are too many attributes. If this value is 0, then no attributes were dropped. dropped_events_count: anyOf: - type: integer maximum: 4294967295 minimum: 0 - type: 'null' title: Dropped Events Count description: >- dropped_events_count is the number of dropped events. If the value is 0, then no events were dropped. dropped_links_count: anyOf: - type: integer maximum: 4294967295 minimum: 0 - type: 'null' title: Dropped Links Count description: >- dropped_links_count is the number of dropped links after the maximum size was enforced. If this value is 0, then no links were dropped. end_time_unix_nano: anyOf: - type: integer exclusiveMaximum: 18446744073709552000 minimum: 0 - type: string pattern: ^[0-9]+$ - type: 'null' title: End Time Unix Nano description: >- end_time_unix_nano is the end time of the span. On the client side, this is the time kept by the local machine where the span execution ends. On the server side, this is the time when the server application handler stops running. Value is UNIX Epoch time in nanoseconds since 00:00:00 UTC on 1 January 1970. This field is semantically required and it is expected that end_time >= start_time. events: anyOf: - items: $ref: '#/components/schemas/OtlpEvent' type: array - type: 'null' title: Events description: >- events is a collection of Event items. A span with no events is valid. flags: anyOf: - type: integer maximum: 4294967295 minimum: 0 - type: 'null' title: Flags description: >- Flags, a bit field. Bits 0-7 (8 least significant bits) are the trace flags as defined in W3C Trace Context specification. To read the 8-bit W3C trace flag, use `flags & SPAN_FLAGS_TRACE_FLAGS_MASK`. See https://www.w3.org/TR/trace-context-2/#trace-flags for the flag definitions. Bits 8 and 9 represent the 3 states of whether a span's parent is remote. The states are (unknown, is not remote, is remote). To read whether the value is known, use `(flags & SPAN_FLAGS_CONTEXT_HAS_IS_REMOTE_MASK) != 0`. To read whether the span is remote, use `(flags & SPAN_FLAGS_CONTEXT_IS_REMOTE_MASK) != 0`. When creating span messages, if the message is logically forwarded from another source with an equivalent flags fields (i.e., usually another OTLP span message), the field SHOULD be copied as-is. If creating from a source that does not have an equivalent flags field (such as a runtime representation of an OpenTelemetry span), the high 22 bits MUST be set to zero. Readers MUST NOT assume that bits 10-31 (22 most significant bits) will be zero. [Optional]. kind: anyOf: - $ref: '#/components/schemas/OtlpKind' - type: integer maximum: 2147483647 minimum: -2147483648 - type: 'null' title: Kind description: >- Distinguishes between spans generated in a particular context. For example, two spans with the same name may be distinguished using `CLIENT` (caller) and `SERVER` (callee) to identify queueing latency associated with the span. default: SPAN_KIND_INTERNAL links: type: 'null' title: Links name: anyOf: - type: string - type: 'null' title: Name description: >- A description of the span's operation. For example, the name can be a qualified method name or a file name and a line number where the operation is called. A best practice is to use the same display name at the same call point in an application. This makes it easier to correlate spans in different traces. This field is semantically required to be set to non-empty string. Empty value is equivalent to an unknown span name. This field is required. parent_span_id: anyOf: - type: string pattern: ^[A-Za-z0-9+/]*={0,2}$ - type: 'null' title: Parent Span Id description: >- The `span_id` of this span's parent span. If this is a root span, then this field must be empty. The ID is an 8-byte array. span_id: anyOf: - type: string pattern: ^[A-Za-z0-9+/]*={0,2}$ - type: 'null' title: Span Id description: >- A unique identifier for a span within a trace, assigned when the span is created. The ID is an 8-byte array. An ID with all zeroes OR of length other than 8 bytes is considered invalid (empty string in OTLP/JSON is zero-length and thus is also invalid). This field is required. start_time_unix_nano: anyOf: - type: integer exclusiveMaximum: 18446744073709552000 minimum: 0 - type: string pattern: ^[0-9]+$ - type: 'null' title: Start Time Unix Nano description: >- start_time_unix_nano is the start time of the span. On the client side, this is the time kept by the local machine where the span execution starts. On the server side, this is the time when the server's application handler starts running. Value is UNIX Epoch time in nanoseconds since 00:00:00 UTC on 1 January 1970. This field is semantically required and it is expected that end_time >= start_time. status: anyOf: - $ref: '#/components/schemas/OtlpStatus' - type: 'null' description: >- An optional final status for this span. Semantically when Status isn't set, it means span's status code is unset, i.e. assume STATUS_CODE_UNSET (code = 0). trace_id: anyOf: - type: string pattern: ^[A-Za-z0-9+/]*={0,2}$ - type: 'null' title: Trace Id description: >- A unique identifier for a trace. All spans from the same trace share the same `trace_id`. The ID is a 16-byte array. An ID with all zeroes OR of length other than 16 bytes is considered invalid (empty string in OTLP/JSON is zero-length and thus is also invalid). This field is required. trace_state: anyOf: - type: string - type: 'null' title: Trace State description: >- trace_state conveys information about request position in multiple distributed tracing graphs. It is a trace_state in w3c-trace-context format: https://www.w3.org/TR/trace-context/#tracestate-header See also https://github.com/w3c/distributed-tracing for more details about this field. additionalProperties: false type: object title: OtlpSpan OtlpKeyValue: properties: key: anyOf: - type: string - type: 'null' title: Key value: anyOf: - $ref: '#/components/schemas/OtlpAnyValue' - type: 'null' additionalProperties: false type: object title: OtlpKeyValue OtlpEvent: properties: attributes: anyOf: - items: $ref: '#/components/schemas/OtlpKeyValue' type: array - type: 'null' title: Attributes description: >- attributes is a collection of attribute key/value pairs on the event. Attribute keys MUST be unique (it is not allowed to have more than one attribute with the same key). dropped_attributes_count: anyOf: - type: integer maximum: 4294967295 minimum: 0 - type: 'null' title: Dropped Attributes Count description: >- dropped_attributes_count is the number of dropped attributes. If the value is 0, then no attributes were dropped. name: anyOf: - type: string - type: 'null' title: Name description: >- name of the event. This field is semantically required to be set to non-empty string. time_unix_nano: anyOf: - type: integer exclusiveMaximum: 18446744073709552000 minimum: 0 - type: string pattern: ^[0-9]+$ - type: 'null' title: Time Unix Nano description: >- time_unix_nano is the time the event occurred. Value is UNIX Epoch time in nanoseconds since 00:00:00 UTC on 1 January 1970. additionalProperties: false type: object title: OtlpEvent OtlpKind: type: string enum: - SPAN_KIND_UNSPECIFIED - SPAN_KIND_INTERNAL - SPAN_KIND_SERVER - SPAN_KIND_CLIENT - SPAN_KIND_PRODUCER - SPAN_KIND_CONSUMER title: OtlpKind OtlpStatus: properties: code: anyOf: - type: integer maximum: 2147483647 minimum: -2147483648 - type: 'null' title: Code description: The status code. message: anyOf: - type: string - type: 'null' title: Message description: A developer-facing human readable error message. additionalProperties: false type: object title: OtlpStatus OtlpAnyValue: properties: array_value: anyOf: - $ref: '#/components/schemas/OtlpArrayValue' - type: 'null' bool_value: anyOf: - type: boolean - type: 'null' title: Bool Value bytes_value: anyOf: - type: string pattern: ^[A-Za-z0-9+/]*={0,2}$ - type: 'null' title: Bytes Value double_value: anyOf: - type: number - $ref: '#/components/schemas/OtlpDoubleValue' - type: string - type: 'null' title: Double Value int_value: anyOf: - type: integer exclusiveMaximum: 9223372036854776000 minimum: -9223372036854776000 - type: string pattern: ^-?[0-9]+$ - type: 'null' title: Int Value kvlist_value: type: 'null' title: Kvlist Value string_value: anyOf: - type: string - type: 'null' title: String Value additionalProperties: false type: object title: OtlpAnyValue OtlpArrayValue: properties: values: anyOf: - items: $ref: '#/components/schemas/OtlpAnyValue' type: array - type: 'null' title: Values description: Array of values. The array may be empty (contain 0 elements). additionalProperties: false type: object title: OtlpArrayValue OtlpDoubleValue: type: string enum: - Infinity - '-Infinity' - NaN title: OtlpDoubleValue ````