> ## Documentation Index > Fetch the complete documentation index at: https://docs.apsio.io/llms.txt > Use this file to discover all available pages before exploring further. # Count sessions > The sessions a search with the same filters lists (default: the last 7 days, at most 30), counted (APS-301): by outcome, with errors (the `has_error=true` rule: at least one handled error), with a stored replay, and the median and 90th percentile of their length. ## OpenAPI ````yaml /api-reference/openapi.json get /projects/{projectId}/sessions/summary openapi: 3.1.0 info: title: Apsio API version: 0.1.0 description: >- Read API v0: your projects, release health and comparisons, missing symbols, issues, sessions, vitals, cohort comparisons, performance (app start, screens, hangs, MetricKit) and network endpoints and traces for one project. Authenticate with a project token as a bearer token, with an OAuth access token from Apsio's authorization server (MCP clients), or, from the console, with the session cookie of a member of the project's organization. servers: - url: https://api.apsio.io/v1 security: [] paths: /projects/{projectId}/sessions/summary: get: summary: Count sessions description: >- The sessions a search with the same filters lists (default: the last 7 days, at most 30), counted (APS-301): by outcome, with errors (the `has_error=true` rule: at least one handled error), with a stored replay, and the median and 90th percentile of their length. parameters: - schema: type: string pattern: ^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$ example: 0192f3a4-0000-7000-8000-00000000a101 required: true name: projectId in: path - schema: type: string format: date-time description: >- Start of the time range, inclusive (RFC 3339). Defaults to the range end minus the default length. example: '2026-10-01T00:00:00Z' required: false description: >- Start of the time range, inclusive (RFC 3339). Defaults to the range end minus the default length. name: from in: query - schema: type: string format: date-time description: End of the time range, exclusive (RFC 3339). Defaults to now. example: '2026-10-08T00:00:00Z' required: false description: End of the time range, exclusive (RFC 3339). Defaults to now. name: to in: query - schema: type: string pattern: ^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$ description: Only this app. required: false description: Only this app. name: app_id in: query - schema: type: string maxLength: 128 description: Only this release. required: false description: Only this release. name: release in: query - schema: type: string enum: - crashed - abnormal_exit - ok description: >- `crashed`, `abnormal_exit`, or `ok` (every session that neither crashed nor ended abnormally). required: false description: >- `crashed`, `abnormal_exit`, or `ok` (every session that neither crashed nor ended abnormally). name: outcome in: query - schema: type: string maxLength: 128 description: device.model.identifier, exactly. example: iPhone17,1 required: false description: device.model.identifier, exactly. name: device_model in: query - schema: type: string maxLength: 64 description: os.version, exactly. required: false description: os.version, exactly. name: os_version in: query - schema: type: string enum: - 'true' - 'false' description: Only sessions with (true) or without (false) handled errors. required: false description: Only sessions with (true) or without (false) handled errors. name: has_error in: query - schema: type: string pattern: ^[A-Za-z0-9._:-]{1,128}$ description: Only sessions with an occurrence of this issue in the time range. required: false description: Only sessions with an occurrence of this issue in the time range. name: issue_id in: query - schema: type: string pattern: ^[A-Z_]{1,16}$ description: 'With endpoint_host and endpoint_template: one network endpoint.' required: false description: 'With endpoint_host and endpoint_template: one network endpoint.' name: endpoint_method in: query - schema: type: string maxLength: 255 required: false name: endpoint_host in: query - schema: type: string maxLength: 256 description: >- Only sessions with a request to this endpoint in the time range (/network/endpoints lists them). required: false description: >- Only sessions with a request to this endpoint in the time range (/network/endpoints lists them). name: endpoint_template in: query - schema: type: string enum: - 'true' - 'false' description: >- With the endpoint: only sessions where a request to it failed (5xx or no response). required: false description: >- With the endpoint: only sessions where a request to it failed (5xx or no response). name: endpoint_failed in: query - schema: type: string minLength: 1 maxLength: 256 description: >- Only sessions that loaded this screen (app.screen.name) in the time range. required: false description: >- Only sessions that loaded this screen (app.screen.name) in the time range. name: screen in: query - schema: type: - integer - 'null' minimum: 0 maximum: 600000 description: >- With screen: only loads of it with a TTID of at least this many milliseconds. required: false description: >- With screen: only loads of it with a TTID of at least this many milliseconds. name: min_ttid_ms in: query - schema: type: - integer - 'null' minimum: 0 maximum: 600000 description: >- With screen: only loads of it with a TTFD (app.screen.load.ttfd) of at least this many milliseconds; loads without one never match. required: false description: >- With screen: only loads of it with a TTFD (app.screen.load.ttfd) of at least this many milliseconds; loads without one never match. name: min_ttfd_ms in: query - schema: type: string minLength: 1 maxLength: 256 description: >- Only sessions whose last screen load in the time range was this screen (app.screen.name): where they stopped, as Journeys' drop-offs. required: false description: >- Only sessions whose last screen load in the time range was this screen (app.screen.name): where they stopped, as Journeys' drop-offs. name: stopped in: query - schema: type: string enum: - 'true' - 'false' description: >- Only sessions with (true) or without (false) a failed HTTP request (5xx or no response). required: false description: >- Only sessions with (true) or without (false) a failed HTTP request (5xx or no response). name: has_failed_request in: query - schema: type: string enum: - 'true' - 'false' description: >- Only sessions with (true) or without (false) a hang (iOS) or ANR (Android) the SDK saw live (spec 6.3). required: false description: >- Only sessions with (true) or without (false) a hang (iOS) or ANR (Android) the SDK saw live (spec 6.3). name: has_hang in: query - schema: type: string enum: - 'true' - 'false' description: Only sessions with (true) or without (false) a stored replay. required: false description: Only sessions with (true) or without (false) a stored replay. name: has_replay in: query - schema: type: string minLength: 1 maxLength: 128 description: >- Only sessions where this feature flag was evaluated (setFeatureFlag). required: false description: >- Only sessions where this feature flag was evaluated (setFeatureFlag). name: flag in: query - schema: type: string maxLength: 128 description: 'With flag: only sessions where it had this variant.' required: false description: 'With flag: only sessions where it had this variant.' name: flag_variant in: query responses: '200': description: The counts. content: application/json: schema: $ref: '#/components/schemas/SessionCounts' '400': description: The request is not valid. content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: No valid bearer token or console session. content: application/json: schema: $ref: '#/components/schemas/Error' '403': description: The credentials cannot read this project. content: application/json: schema: $ref: '#/components/schemas/Error' '429': description: >- Over a rate limit (the caller's, the client address's, or the plan's); Retry-After says when to retry. content: application/json: schema: $ref: '#/components/schemas/Error' security: - bearer: [] - session: [] components: schemas: SessionCounts: type: object properties: sessions: type: integer crashed: type: integer abnormal_exit: type: integer description: Ended by the system without a crash report (spec 6.4). ok: type: integer description: >- Ended normally, or still active: neither crashed nor ended abnormally. with_errors: type: integer description: 'With at least one handled error: what has_error=true lists.' with_replay: type: integer duration_ms: type: object properties: p50: type: - integer - 'null' p90: type: - integer - 'null' required: - p50 - p90 required: - sessions - crashed - abnormal_exit - ok - with_errors - with_replay - duration_ms Error: type: object properties: error: type: object properties: code: type: string example: invalid_request message: type: string required: - code - message required: - error securitySchemes: bearer: type: http scheme: bearer description: >- A project token (apsio_pt_v0...), which reads exactly one project, or an OAuth access token issued for the API, which reads what its user can. Access tokens issued for Apsio's MCP server are accepted only from the MCP server itself. session: type: apiKey in: cookie name: apsio_session description: >- The console session, set by /v1/auth/callback (`__Host-apsio_session` when host-only). ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.