Tasks
For instructions on how to authenticate to use this endpoint, see API overview.
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Create tasks runs append log
Append one or more log entries to the task run log array
Required API key scopes
task:writePath parameters
- idstring
- task_idstring
Request parameters
- entriesarray
Response
Example request
POST /api /projects /:project_id /tasks /:task_id /runs /:id /append_logExample response
Status 200 Run with updated log
Status 400 Invalid log entries
Status 404 Run not found
Create tasks runs artifacts
Persist task artifacts to S3 and attach them to the run manifest.
Required API key scopes
task:writePath parameters
- idstring
- task_idstring
Request parameters
- artifactsarray
Response
Example request
POST /api /projects /:project_id /tasks /:task_id /runs /:id /artifactsExample response
Status 200 Run with updated artifact manifest
Status 400 Invalid artifact payload
Status 404 Run not found
Retrieve tasks runs artifacts download
Redirects to a short-lived presigned URL for the artifact, so callers can share a stable link instead of a raw presigned URL.
Required API key scopes
task:readPath parameters
- artifact_idstring
- idstring
- task_idstring
Example request
GET /api /projects /:project_id /tasks /:task_id /runs /:id /artifacts /:artifact_id /downloadExample response
Status 302 Redirect to a short-lived presigned download URL
Status 400 Unable to generate download URL
Status 404 Artifact not found
Create tasks runs artifacts dismiss
Hides artifacts from clients without deleting them from storage, so a file dismissed by mistake can be restored.
Required API key scopes
task:writePath parameters
- idstring
- task_idstring
Request parameters
- artifact_idsarray
- dismissedbooleanDefault:
true
Response
Example request
POST /api /projects /:project_id /tasks /:task_id /runs /:id /artifacts /dismissExample response
Status 200 Run with updated artifact manifest
Status 404 Artifact not found
Create tasks runs artifacts download
Streams artifact content for a task run artifact after validating that it belongs to the run.
Required API key scopes
task:readPath parameters
- idstring
- task_idstring
Request parameters
- storage_pathstring
Example request
POST /api /projects /:project_id /tasks /:task_id /runs /:id /artifacts /downloadExample response
Status 200 Artifact content
Status 400 Invalid request
Status 404 Artifact not found
Create tasks runs artifacts finalize upload
Verify directly uploaded S3 objects and attach them to the run artifact manifest.
Required API key scopes
task:writePath parameters
- idstring
- task_idstring
Request parameters
- artifactsarray
Response
Example request
POST /api /projects /:project_id /tasks /:task_id /runs /:id /artifacts /finalize_uploadExample response
Status 200 Run with updated artifact manifest
Status 400 Invalid artifact payload
Status 404 Run not found
Create tasks runs artifacts prepare upload
Reserve S3 object keys for task artifacts and return presigned POST forms for direct uploads.
Required API key scopes
task:writePath parameters
- idstring
- task_idstring
Request parameters
- artifactsarray
Response
Example request
POST /api /projects /:project_id /tasks /:task_id /runs /:id /artifacts /prepare_uploadExample response
Status 200 Prepared uploads for the requested artifacts
Status 400 Invalid artifact payload
Status 404 Run not found
Create tasks runs artifacts presign
Returns a temporary, signed URL that can be used to download a specific artifact.
Required API key scopes
task:readPath parameters
- idstring
- task_idstring
Request parameters
- storage_pathstring
Response
Example request
POST /api /projects /:project_id /tasks /:task_id /runs /:id /artifacts /presignExample response
Status 200 Presigned URL for the requested artifact
Status 400 Invalid request
Status 404 Artifact not found
Create tasks runs artifacts references
Attach live PostHog object references to the run artifact manifest without uploading files.
Required API key scopes
task:writePath parameters
- idstring
- task_idstring
Request parameters
- referencesarray
Response
Example request
POST /api /projects /:project_id /tasks /:task_id /runs /:id /artifacts /referencesExample response
Status 200 Run with updated reference artifacts
Status 404 Run not found
Create tasks runs cancel
Stop an active cloud run. Interrupts the agent, snapshots interactive sessions for later resume, tears down the sandbox, and marks the run cancelled. Idempotent: cancelling a finished run returns it unchanged.
Required API key scopes
task:writePath parameters
- idstring
- task_idstring
Request parameters
- reasonstringnull
Response
Example request
POST /api /projects /:project_id /tasks /:task_id /runs /:id /cancelExample response
Status 200 Run already finished; returned unchanged
Status 202 Cancellation accepted
Status 400 Run is not a cloud run
Status 404 Task run not found
Status 503 Cancellation could not be delivered; safe to retry
Create tasks runs clear conversation
Record a /clear boundary in a finished run's log so the next run in the chain starts with an empty conversation. Its checkpoints, artifacts, and visible history are unaffected. Only for a finished run: an active one has an agent that owns the clear, so send /clear to it as an ordinary message instead.
Required API key scopes
task:writePath parameters
- idstring
- task_idstring
Response
Example request
POST /api /projects /:project_id /tasks /:task_id /runs /:id /clear_conversationExample response
Status 200 Run with the boundary recorded
Status 404 Run not found
Status 409 Run is still active; send /clear to its agent
Create tasks runs command
Queue user_message JSON-RPC commands through the task workflow and forward sandbox control commands to the agent server. Supports user_message, cancel, close, permission_response, set_config_option, mcp_response, side_question, native Pi RPC commands, and Pi queue operations.
Required API key scopes
task:writePath parameters
- idstring
- task_idstring
Request parameters
- jsonrpc
- method
- paramsobject
- id
Response
Example request
POST /api /projects /:project_id /tasks /:task_id /runs /:id /commandExample response
Status 200 Agent server response
Status 400 Invalid command or no active sandbox
Status 403 PostHog Desktop access is required to message this run's agent
Status 404 Task run not found
Status 429 Organization reached its PostHog Desktop usage limit
Status 502 Agent server unreachable
Retrieve tasks runs connection token
Generate a JWT token for direct connection to the sandbox. Valid for 24 hours.
Required API key scopes
task:writePath parameters
- idstring
- task_idstring
Response
Example request
GET /api /projects /:project_id /tasks /:task_id /runs /:id /connection_tokenExample response
Status 200 Connection token for direct sandbox connection
Status 403 PostHog Desktop access is required
Status 404 Task run not found
Status 429 Organization reached its PostHog Desktop usage limit
Retrieve tasks runs logs
Fetch the logs for a task run as JSONL. If the run resumes from another (state.resume_from_run_id), each ancestor's log is concatenated first (oldest ancestor → ... → this run) so resume consumers see a single continuous history and can find the most recent git_checkpoint event regardless of which run emitted it.
Required API key scopes
task:readPath parameters
- idstring
- task_idstring
Example request
GET /api /projects /:project_id /tasks /:task_id /runs /:id /logsExample response
Status 200 Log content in JSONL format
Status 404 Task run not found
Retrieve tasks runs peers
Agent runs this run may send messages to: cloud Pi runs of tasks created by the same user, currently in progress or queued. Discovery and send validation share one visibility policy, so a run can only message what it can list; the per-entry sendable flag is the liveness contract.
Required API key scopes
task:readPath parameters
- idstring
- task_idstring
Response
Example request
GET /api /projects /:project_id /tasks /:task_id /runs /:id /peersExample response
Status 200 Active agent runs this run may message
Status 403 Peer messaging is disabled or the task is not on the Pi runtime
Status 404 Run not found
Create tasks runs peers message
Relay a message from this run to a peer agent run. The body is delivered below a server-composed provenance envelope as a queued (non-steer) turn; attachments are copied into the target run's own artifact storage. accepted means queued for delivery, never delivered — the sandbox handoff happens later inside the target's workflow.
Required API key scopes
task:writePath parameters
- idstring
- target_run_idstring
- task_idstring
Request parameters
- contentstring
- artifact_idsarray
Response
Example request
POST /api /projects /:project_id /tasks /:task_id /runs /:id /peers /:target_run_id /messageExample response
Status 200 Synchronous send result (accepted / target_finished / rejected)
Status 400 Invalid message payload
Status 403 Peer messaging is disabled or the task is not on the Pi runtime
Status 404 Run not found
Create tasks runs relay message
Queue a Slack relay workflow to post a run message into the mapped Slack thread.
Required API key scopes
task:writePath parameters
- idstring
- task_idstring
Request parameters
- textstring
- message_idstringnull
- text_partsarray
Response
Example request
POST /api /projects /:project_id /tasks /:task_id /runs /:id /relay_messageExample response
Status 200 Relay accepted
Status 404 Run not found
Create tasks runs resume in cloud
Resume an existing task run in a cloud sandbox. Terminates any existing workflow and starts a new one.
Required API key scopes
task:writePath parameters
- idstring
- task_idstring
Response
Example request
POST /api /projects /:project_id /tasks /:task_id /runs /:id /resume_in_cloudExample response
Status 200 Run resumed in cloud
Status 400 Run already active or workflow failed
Status 403 PostHog Desktop access is required, or Pi cloud runtime is disabled
Status 429 Team is over its posthog_code usage limit
Retrieve tasks runs session logs
Fetch session log entries for a task run with optional filtering by timestamp, event type, and limit.
Required API key scopes
task:readPath parameters
- idstring
- task_idstring
Query parameters
- afterstring
- event_typesstring
- exclude_typesstring
- limitintegerDefault:
1000 - offsetintegerDefault:
0
Example request
GET /api /projects /:project_id /tasks /:task_id /runs /:id /session_logsExample response
Status 200 Filtered log events as JSON array
Status 404 Task run not found
Update tasks runs set output
Update the output field for a task run (e.g., PR URL, commit SHA, etc.)
Required API key scopes
task:writePath parameters
- idstring
- task_idstring
Request parameters
- output
Response
Example request
PATCH /api /projects /:project_id /tasks /:task_id /runs /:id /set_output