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Documentation Index

Fetch the complete documentation index at: https://www.activepieces.com/docs/llms.txt

Use this file to discover all available pages before exploring further.

The numbers in the Cloud column are the limits enforced on cloud.activepieces.com. On self-hosted installations every limit is configurable through the environment variable shown in the table — the Self-hosted default column lists the value applied when the variable is unset.

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Execution

LimitCloudEnv varSelf-hosted default
Flow run timeout10 minAP_FLOW_TIMEOUT_SECONDS600
Worker process memory1 GBAP_SANDBOX_MEMORY_LIMIT (KB)1048576
Paused flow lifetime30 daysAP_PAUSED_FLOW_TIMEOUT_DAYS30
Worker concurrency (per worker)10AP_WORKER_CONCURRENCY5
Flows paused by Wait for Approval or Delay do not count toward the flow run timeout — the timeout only counts active execution time.
The memory limit is measured for the entire Node.js process running the flow. About 300 MB of that is overhead for a warm process with pieces loaded.
To handle longer processes, split them into multiple flows — e.g. one flow calls another via webhook, or each flow processes a smaller batch of items.

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Files & flow run logs

Files emitted by actions or triggers are persisted to the database or S3 so the flow can retry from a later step. The log size limit applies to the combined inputs and outputs of every step in a single run; step outputs above the slice threshold are offloaded to object storage and re-hydrated on demand instead of sitting in worker memory.
LimitCloudEnv varSelf-hosted default
Step file size10 MBAP_MAX_FILE_SIZE_MB25
Flow run log size (combined inputs + outputs, includes sliced payloads)25 MBAP_MAX_FLOW_RUN_LOG_SIZE_MB50
Step output slice threshold32 KBAP_FLOW_RUN_LOG_SLICE_THRESHOLD_KB32
Step input truncate threshold2 KBAP_FLOW_RUN_LOG_INPUT_TRUNCATE_THRESHOLD_KB2

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How it works

  • Input — values above AP_FLOW_RUN_LOG_INPUT_TRUNCATE_THRESHOLD_KB are replaced with a placeholder in the log; the step still receives the full value at runtime.
  • Output — outputs above AP_FLOW_RUN_LOG_SLICE_THRESHOLD_KB are offloaded to object storage and replaced with a reference in the log; the payload is re-hydrated on demand.
  • Total — the cumulative size of inputs and outputs (counting the original size of offloaded outputs) is capped by AP_MAX_FLOW_RUN_LOG_SIZE_MB. Runs that exceed it end with status LOG_SIZE_EXCEEDED.
A run that produces enough cumulative output to exceed AP_MAX_FLOW_RUN_LOG_SIZE_MB ends with status LOG_SIZE_EXCEEDED, regardless of how many individual outputs were offloaded to object storage. Lowering AP_FLOW_RUN_LOG_SLICE_THRESHOLD_KB will not buy more log headroom — only raising AP_MAX_FLOW_RUN_LOG_SIZE_MB does.

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Webhooks

LimitCloudEnv varSelf-hosted default
Sync webhook response timeout30 sAP_WEBHOOK_TIMEOUT_SECONDS30
Max webhook payload size5 MBAP_MAX_WEBHOOK_PAYLOAD_SIZE_MB25
Webhook payload inline threshold1024 KBAP_WEBHOOK_PAYLOAD_INLINE_THRESHOLD_KB512
For synchronous webhook requests (URLs ending in /sync), Activepieces will wait up to the response timeout before returning HTTP 408. Payloads above the inline threshold are offloaded from Redis to file storage to protect Redis memory; smaller payloads stay inline for the fastest path.

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Key / value storage

Used by the built-in Store piece and any piece that calls context.store.
LimitValue
Maximum key length128 characters
Maximum value size512 KB
These limits are not configurable.