> For the complete documentation index, see [llms.txt](https://docs.interactive.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.interactive.ai/agents/reference/limits-and-defaults.md).

# Limits & defaults

> **Context** — Every default value and cap in one place, introspected from runtime version `0.8.1` (manifest schema 6.1.1). Field semantics live on the concept pages; this is the lookup table.

## Manifest field defaults

| Field                                            | Default               |
| ------------------------------------------------ | --------------------- |
| `agent_config.runtime.log_level`                 | `"INFO"`              |
| `agent_config.runtime.max_engine_iterations`     | `5`                   |
| `agent_config.runtime.policy_batch_size`         | `5`                   |
| `agent_config.llms.default`                      | `"interactive/agent"` |
| `agent_config.llms.fallback`                     | `[]`                  |
| `agent_config.database.port`                     | `5432`                |
| `agent_config.database.user`                     | `"postgres"`          |
| `agent_config.database.dbname`                   | `"postgres"`          |
| `agent_config.database.sslmode`                  | `"require"`           |
| `agent_config.search (pgvector).type`            | `"pgvector"`          |
| `agent_config.search (pgvector).user`            | `"postgres"`          |
| `agent_config.search (pgvector).dbname`          | `"postgres"`          |
| `agent_config.search (pgvector).sslmode`         | `"require"`           |
| `agent_config.search (pgvector).content_key`     | `"content"`           |
| `agent_config.search (pgvector).metadata_filter` | `{}`                  |
| `agent_config.search (pgvector).top_k`           | `5`                   |
| `agent_config.search (external).type`            | `"external"`          |
| `agent_config.search (external).top_k`           | `5`                   |
| `agent_config.search (external).max_messages`    | `20`                  |
| `agent_config.search (external).timeout_seconds` | `5.0`                 |
| `agent_config.traces.deployment_environment`     | `"production"`        |
| `agent_config.traces.backend.api_key_scheme`     | `"bearer"`            |
| `agent_config.webhooks[].algorithm`              | `"sha256"`            |
| `agent_config.webhooks[].prefix`                 | `""`                  |

## Operator env-var defaults

| Variable                             | Default  |
| ------------------------------------ | -------- |
| `ROUTER_MAX_TOKENS`                  | `100000` |
| `AUTONOMOUS_DEFAULT_TIMEOUT_SECONDS` | `120`    |
| `AUTONOMOUS_MAX_TIMEOUT_SECONDS`     | `600`    |
| `AUTONOMOUS_CALLBACK_MAX_RETRIES`    | `5`      |
| `EVAL_NODE_PARALLELISM`              | `50`     |
| `LLM_PROVIDER_ORDER`                 | unset    |

## Hardcoded model defaults

| Slot                                                    | Default                                     |
| ------------------------------------------------------- | ------------------------------------------- |
| Chat (`llms.default` absent)                            | `interactive/agent`                         |
| Evaluation (`llms.evaluation` absent)                   | `interactive/google/gemini-3-flash-preview` |
| Evaluation fallback (`llms.evaluation_fallback` absent) | `interactive/google/gemini-3.1-pro-preview` |

## Behavioural constants

| Constant                         | Value           | Meaning                                                                                                                          |
| -------------------------------- | --------------- | -------------------------------------------------------------------------------------------------------------------------------- |
| HTTP port                        | `8080`          | Container listen port.                                                                                                           |
| Evaluation retry attempts        | `3` + `3`       | Per internal decision call: 3 on the primary evaluation model, then 3 on the fallback. See [Models](/agents/concepts/models.md). |
| Autonomous timeout default / cap | `120s` / `600s` | Routine `timeout_seconds` falls back to the default and is clamped to the cap.                                                   |
| Callback delivery attempts       | `5`             | Autonomous callbacks / event webhooks, with backoff.                                                                             |
| Knowledge-base query timeout     | `30s`           | Internal cap on pgvector searches (retrieval soft-fails past it).                                                                |
| Startup failure exit window      | `10s`           | Boot errors exit the process non-zero within this window.                                                                        |


---

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