Update a session

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Headers

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Path parameters

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Body parameters

• Omitted, or config is {}: leave the environment variables unchanged.
• Non-empty object: replace the entire Session-level environment variable map. It is not incrementally merged with the previous map, and existing keys that are omitted are deleted.
• Empty object {}: clear all Session-level environment variables.
• Use strings for values; object and array values are invalid.
• The replacement applies only to the Session-level layer. After the update, the Session runtime environment variables are still merged on top of the compiled Template + Identity Config result, with Session-level values overriding base-layer values with the same key.
• The runtime validates environment variable names, reserved words, and capacity limits. Invalid values return HTTP 400.

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config.model

• Omit config.model: keep the current configuration.
• Pass a string or object: replace the entire model configuration. Previous options not supplied are not retained. The new configuration applies to subsequent model calls.
• Pass null: remove the Session model override and inherit the current Template / Identity Config model.
• Pass {}: returns HTTP 400. A model object must contain a non-empty id.

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Example request

curl -s -X POST 'https://api.qoder.com.cn/api/v1/forward/sessions/sess_xxx' \
  -H "Authorization: Bearer $QODER_ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
  "title": "Updated session title",
  "metadata": {
    "source": "mobile",
    "biz_id": "ticket_123"
  },
  "config": {
    "model": {
      "id": "ultimate",
      "effort": "high",
      "context_window": 200000
    },
    "environment_variables": {
      "API_KEY": "sk-xxx",
      "REGION": "cn-hangzhou"
    }
  }
}'

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Example response

{
  "id": "sess_xxx",
  "type": "session",
  "identity_id": "idn_xxx",
  "template": {
    "id": "tmpl_support",
    "type": "template",
    "name": "Support assistant",
    "model": "ultimate",
    "version": 3
  },
  "source_type": "api",
  "status": "idle",
  "title": "Updated session title",
  "metadata": {
    "source": "mobile",
    "biz_id": "ticket_123"
  },
  "config": {
    "model": {
      "id": "ultimate",
      "effort": "high",
      "context_window": 200000
    },
    "environment_variables": {
      "API_KEY": "sk-xxx",
      "REGION": "cn-hangzhou"
    }
  },
  "stats": {
    "active_seconds": 30,
    "duration_seconds": 3600
  },
  "usage": {
    "total_credits": 12.7
  },
  "outcome_evaluations": [],
  "archived_at": null,
  "created_at": "2026-06-22T10:00:00Z",
  "updated_at": "2026-06-22T12:00:00Z"
}

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Response fields

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Errors

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Notes

• Updating only the title or metadata does not trigger this configuration refresh. If an environment variable or model update returns session_materialization_busy, follow Retry-After, wait for the current Turn to finish, and retry with the same request body. If the original request included Idempotency-Key, reuse that key. This temporary rejection is not cached as a final idempotent response; this rule applies only to this error code.
• resources is a create-time setting and cannot be changed here. To add a file resource while the session is in progress, use the Add a session resource endpoint.
• config.environment_variables in the response reflects the updated result.
• For compatibility with existing calls only, non-string scalar values are normalized to strings (null becomes an empty string). For new integrations, use string values.

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