> ## Documentation Index > Fetch the complete documentation index at: https://docs.agentsfleet.net/llms.txt > Use this file to discover all available pages before exploring further. # Read a runner > Returns a runner's details, current work, and lifetime counters. Requires platform administrator access. ## OpenAPI ````yaml https://raw.githubusercontent.com/agentsfleet/agentsfleet/main/public/openapi.json get /v1/fleets/runners/{runner_id} openapi: 3.1.0 info: title: agentsfleet API description: API for managing workspaces, fleets, triggers, and runs. contact: name: agentsfleet url: https://agentsfleet.net license: name: MIT identifier: MIT version: 1.0.0 servers: - url: https://api.agentsfleet.net description: Production security: [] paths: /v1/fleets/runners/{runner_id}: get: tags: - Fleet summary: Read a runner description: >- Returns a runner's details, current work, and lifetime counters. Requires platform administrator access. operationId: get_fleet_runner parameters: - name: runner_id in: path description: >- Runner identifier (version 7 universally unique identifier, or UUID). required: true schema: type: string responses: '200': description: OK content: application/json: schema: $ref: '#/components/schemas/RunnerDetail' '400': description: The request is invalid content: application/problem+json: schema: $ref: '#/components/schemas/ProblemBody' '401': description: Authentication is missing, invalid, or not accepted by this endpoint content: application/problem+json: schema: $ref: '#/components/schemas/ProblemBody' '403': description: You do not have permission for this action content: application/problem+json: schema: $ref: '#/components/schemas/ProblemBody' '404': description: The resource was not found or is not accessible to you content: application/problem+json: schema: $ref: '#/components/schemas/ProblemBody' '429': description: A request or capacity limit has been reached content: application/problem+json: schema: $ref: '#/components/schemas/ProblemBody' '500': description: An internal server error occurred content: application/problem+json: schema: $ref: '#/components/schemas/ProblemBody' '503': description: A required service is unavailable content: application/problem+json: schema: $ref: '#/components/schemas/ProblemBody' security: - BearerAuth: [] components: schemas: RunnerDetail: allOf: - $ref: '#/components/schemas/RunnerItem' description: The fields shared with the runner list, flattened on the wire. - type: object required: - active_lease_count - active_fleet_count - leases_acquired - leases_succeeded - leases_failed - leases_expired properties: active_fleet_count: type: integer format: int64 description: Fleets represented by live leases. active_lease_count: type: integer format: int64 description: Live leases currently held. leases_acquired: type: integer format: int64 description: Lifetime acquired count. leases_expired: type: integer format: int64 description: Lifetime expired count. leases_failed: type: integer format: int64 description: Lifetime failed count. leases_succeeded: type: integer format: int64 description: Lifetime successful count. selftest: oneOf: - $ref: '#/components/schemas/SelftestReport' description: Latest complete self-test report. - type: 'null' selftest_completed_at: type: - string - 'null' format: date-time description: Latest self-test completion instant. selftest_requested_at: type: - string - 'null' format: date-time description: Outstanding self-test request instant. description: One runner with its live and lifetime counters. ProblemBody: type: object description: The body every refusal carries, under `application/problem+json`. required: - docs_uri - title - detail - error_code - request_id properties: action_id: type: - string - 'null' description: 'On that 409 only: the action the gate held.' current_state: type: - string - 'null' description: 'On a 409 only: the state that forbade the transition.' detail: type: string description: One sentence on what was refused and why. docs_uri: type: string description: Where the error code is documented. error_code: type: string description: The registry code, stable across releases. etag: type: - string - 'null' description: >- On a 412 only: the resource's current entity tag, to refetch and retry. gate_id: type: - string - 'null' description: 'On an answered approval gate''s 409 only: the gate that was answered.' outcome: type: - string - 'null' description: 'On that 409 only: the answer that stands.' request_id: type: string description: The request this refusal answers, for support. resolved_at: type: - string - 'null' format: date-time description: 'On that 409 only: when the standing answer was given.' resolved_by: type: - string - 'null' description: 'On that 409 only: who gave it.' title: type: string description: A short name for the refusal, safe to show a person. user_message: type: - string - 'null' description: A curated sentence for end users, where the code has one. RunnerItem: type: object description: One runner in the newest-first operator list. required: - id - host_id - sandbox_tier - status - liveness - labels - last_seen_at - created_at - assigned_policy - degraded properties: achievable: oneOf: - $ref: '#/components/schemas/CapabilityReport' description: Capability report most recently supplied by the host. - type: 'null' assigned_policy: $ref: '#/components/schemas/AssignedPolicy' description: Policy currently assigned to the host. created_at: type: string format: date-time description: Enrolment instant. degraded: type: boolean description: Whether the assignment exceeds the reported capability. degraded_reason: type: - string - 'null' description: Stored explanation for a degraded verdict. host_id: type: string description: Stable host identity supplied at enrolment. id: type: string description: Canonical runner identifier. labels: type: array items: type: string description: Placement labels. last_seen_at: type: string format: date-time description: Last heartbeat instant. liveness: $ref: '#/components/schemas/RunnerLiveness' description: Runtime state derived from heartbeat and leases. sandbox_tier: type: string description: Assigned isolation tier spelling. status: $ref: '#/components/schemas/AdminState' description: Operator-controlled admission state. additionalProperties: false SelftestReport: type: object description: |- One probe run and the verdict it reached. The tier and policy travel with the verdict. Compare them against the runner's current values to tell a stale result from a live one. required: - checks - all_ok - sandbox_tier - network_policy properties: all_ok: type: boolean description: Whether every check passed. checks: type: array items: $ref: '#/components/schemas/SelftestCheck' description: Every check the probe ran. network_policy: type: string description: Outgoing network access policy in effect during the self-test. sandbox_tier: type: string description: The tier in force when the probe ran. additionalProperties: false CapabilityReport: type: object description: | What this host can actually enforce. required: - landlock - seccomp - cgroup_controllers - bubblewrap - egress_enforcement properties: bubblewrap: type: boolean description: The sandbox launcher is available. build_id: type: - string - 'null' description: >- Source digest compiled into the reporting runner; absent for an unbound build. cgroup_controllers: type: array items: type: string description: Controllers present in the delegated cgroup's subtree control. egress_enforcement: type: boolean description: >- Whether the operating system can restrict outgoing network access to allowed hosts. landlock: type: boolean description: Filesystem isolation is available. seccomp: type: boolean description: System-call filtering is available. additionalProperties: false AssignedPolicy: type: object description: >- Sandbox isolation, outgoing network access, and concurrency settings assigned to this runner. required: - sandbox_tier - network_policy - registry_allowlist - worker_count - extra_binds properties: extra_binds: type: array items: $ref: '#/components/schemas/ExtraBind' description: Extra host paths bound into every lease's sandbox. network_policy: $ref: '#/components/schemas/RunnerNetworkPolicy' description: Outgoing network access policy to apply. registry_allowlist: type: array items: type: string description: >- Default package registries added to each assignment's allowed network hosts. An empty list uses the runner's defaults. sandbox_tier: $ref: '#/components/schemas/SandboxTier' description: Isolation strength to apply. worker_count: type: integer format: int32 description: Concurrent workers the runner may start. Clamped on both sides. minimum: 0 RunnerLiveness: type: string description: |- Derived runtime liveness, computed by the fleet read and NEVER stored — storing it would drift from the values it is derived from. enum: - registered - busy - online - offline AdminState: type: string description: >- Administrator-selected runner state. Only `Active` permits runner API requests. enum: - active - cordoned - draining - drained - revoked SelftestCheck: type: object description: >- One self-test check's verdict. `detail` is prose even when `ok`: every passing check carries a line, and a whitespace-free cause reads to an operator as a leaked internal identifier. required: - name - ok - detail properties: detail: type: string description: Why, in prose. name: type: string description: What was checked. ok: type: boolean description: Whether it passed. additionalProperties: false ExtraBind: type: object description: >- One host path bound into every lease's sandbox, in addition to the baseline. An operator may ADD a path a host needs; never remove or re-mode one the sandbox depends on. required: - path - mode - note properties: mode: $ref: '#/components/schemas/BindMode' description: Whether the bind is writable. note: type: string description: Operator note explaining why the bind exists. path: type: string description: Host path to bind. RunnerNetworkPolicy: type: string description: Outgoing network access policy assigned to a runner. enum: - allow_all - deny_all_egress - allow_list_egress SandboxTier: type: string description: The isolation strength assigned to a runner. enum: - landlock_full - container_nested - dev_none BindMode: type: string description: Whether an operator-added bind is writable. enum: - read_only - read_write securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: JWT description: >- Send a dashboard session token, an account API key (`agt_t`), or a command-line credential (`afc_`) as a Bearer token. Each endpoint lists accepted credential types. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.