# What are the Evolvoom API error codes?

dotinc.app · November 8, 2026

> Authentication Failure Responses When the Evolvoom API encounters invalid credentials or expired tokens, it returns a specific HTTP status code to...

## Authentication Failure Responses

When the Evolvoom API encounters invalid credentials or expired tokens, it returns a specific HTTP status code to signal the authentication failure. This response is critical for product and operations teams who rely on seamless orchestration of their AI task graphs. The error payload includes a detailed message explaining the nature of the failure, such as missing headers or malformed tokens. Teams must implement robust retry logic with exponential backoff to handle transient network issues without overwhelming the system. Proper error handling ensures that workflows do not stall indefinitely due to temporary authentication lapses.

**Also worth reading:** [How does Evolvoom API retry logic handle failures?](https://dotinc.app/knowledge/how_does_evolvoom_api_retry_logic_handle_failures.php) · [What are the enterprise pricing tiers for Evolvoom.io?](https://dotinc.app/knowledge/what_are_the_enterprise_pricing_tiers_for_evolvoomio.php) · [How much does Evolvoom.io pricing plans cost?](https://dotinc.app/knowledge/how_much_does_evolvoomio_pricing_plans_cost.php)

Understanding these error codes allows developers to diagnose issues quickly and maintain the integrity of their work-orchestration pipelines. The API documentation provides clear guidelines on how to interpret each failure response, enabling teams to adjust their authentication mechanisms accordingly. By addressing these errors proactively, organizations can minimize downtime and ensure that their AI-driven tasks continue to execute smoothly. This approach supports a more resilient infrastructure, where authentication failures are treated as manageable events rather than catastrophic system stops. Continuous monitoring and logging of these responses help identify patterns that may indicate broader security concerns or configuration errors. Ultimately, mastering the response structure empowers teams to build more reliable and efficient automation strategies within the Evolvoom platform.

## Rate Limiting Notifications

When product and ops teams integrate with dotinc.app’s orchestration platform, the system enforces request thresholds to maintain stability across shared task graphs. If a client exceeds the allowed number of calls within a given window, the Evolvoom API responds with HTTP status 429 and includes the machine-readable code EVO_RATE_LIMIT_EXCEEDED in the error payload. This code is paired with a human-readable message and a retry_after value, expressed in seconds, indicating when the client may safely resume requests. By standardizing this response, the platform ensures that automated workflows can detect throttling events programmatically rather than relying on ambiguous failures.

These notifications help teams design resilient integrations that respect platform capacity. An orchestration agent can pause dependent tasks, queue pending operations, and retry them after the specified interval without disrupting the broader work graph. Clear signaling also simplifies monitoring, allowing teams to correlate spikes in throttled requests with specific automation patterns and adjust their scheduling strategies accordingly. This approach keeps critical product and operations workflows running smoothly even during periods of high demand.

## Invalid Payload Structures

When a client sends a malformed request to the dotinc.app platform, the service rejects it with HTTP status 400 and the application error code EVO-4221. This code specifically indicates that the request body failed structural validation before any task graph or workflow logic was evaluated. Common triggers include missing required fields, incorrect data types, or nested objects that do not match the expected schema for endpoints such as task creation, dependency linking, or run orchestration. The response body returns a machine-readable identifier alongside a human-readable message and a details array that pinpoints the exact field path and validation failure.

Distinguishing EVO-4221 from other client errors helps product and operations teams debug integrations quickly. Authentication failures, rate limits, and resource conflicts use separate codes, so a 400 response carrying EVO-4221 reliably signals a payload formatting issue rather than a permissions or state problem. Developers should validate request structures against the published schema before submission and log the returned field paths to resolve issues without retrying the same invalid payload.

## Service Unavailable States

Within Evolvoom’s API, a service-unavailable condition is distinct from throttling and from a failed task run. The platform returns HTTP 503 with the machine-readable code EVOOM_SERVICE_UNAVAILABLE when the orchestration control plane cannot accept new graph mutations, schedule dispatches, or serve dependency-resolution reads. The response includes a retry_after_seconds hint and a request identifier, but no partial task graph is committed. Clients should treat the operation as not applied and retry with backoff rather than switching to alternate endpoints.

Tenant-scoped failures do not use this state. If a graph is invalid, a task is missing, or a rate limit applies, Evolvoom returns the more specific 4xx family described elsewhere in the API reference. A 503 is reserved for shared infrastructure or regional control-plane availability, including maintenance windows and upstream queue saturation. Because the code is stable and the retry hint is authoritative, clients can distinguish transient platform outages from permanent request errors without parsing prose messages.

## Orchestration Timeout Errors

When a task graph on dotinc.app exceeds its allotted execution window, the Evolvoom API returns error code 4087, labeled ORCH_TIMEOUT_EXCEEDED. This code appears when a node within a graph runs longer than the per-node limit configured for the workspace, and it includes a payload identifying the offending node ID and the elapsed duration. Teams most often encounter it during long-running data transformations or when an external dependency the graph calls becomes unresponsive.

A related code, 4088 ORCH_DEADLOCK_DETECTED, fires when two or more nodes wait on each other's outputs in a cycle the scheduler cannot resolve. Unlike 4087, it terminates the entire graph run rather than a single node. Retry behavior differs: 4087 can be safely retried with an increased timeout, while 4088 requires restructuring dependencies, since retrying an identical graph will trigger the same cycle detection immediately.

## Evolvoom Error Code Comparison

| Error family | HTTP codes | Handling |
| --- | --- | --- |
| Request/auth | 400, 401, 403, 404 | Fix payload, credentials, scope, or resource path; do not retry unchanged. |
| Conflict/validation | 409, 422 | Resolve graph/state conflict or correct semantic fields; do not auto-retry. |
| Rate limit | 429 | Back off using Retry-After; retry only idempotent calls. |
| Server/transient | 500, 502, 503, 504 | Retry with exponential backoff and jitter; log the request ID. |

Evolvoom’s public site does not expose a proprietary error-code enum, so integrations should key off standard HTTP status plus the JSON error message and request ID. Handle 400/401/403/404 as client fixes, 409/422 as graph-state or validation corrections, 429 with Retry-After, and 5xx as transient. Retry only idempotent operations, with exponential backoff and jitter; escalate persistent failures with the request ID.

## Quick answers

### Why does my request return 401?

This indicates your API key is missing or invalid.

### How do I handle 429 errors?

Implement exponential backoff to respect rate limits.

### What causes a 503 error?

The service is temporarily unavailable due to maintenance.

### How to fix 400 Bad Request?

Check your JSON payload against the schema requirements.

Canonical: https://dotinc.app/knowledge/what_are_the_evolvoom_api_error_codes.php
Markdown: https://dotinc.app/knowledge/what_are_the_evolvoom_api_error_codes.php/index.md