# Parameters

**GET /network/parameters**

<p align="right">status: <strong>stable</strong></p>

Returns the set of network parameters for the current epoch.



## Servers
- https://localhost:8090/v2: https://localhost:8090/v2 ()



## Parameters




## Responses
### 406: Not Acceptable

#### Body Parameters: application/json (object)
- **message** (string)
  May occur when providing an invalid 'Accept' header.
- **code** (string)
  

### 200: Ok

#### Body Parameters: application/json (object)
- **genesis_block_hash** (string(hex))
  The hash of a block
- **blockchain_start_time** (string(iso-8601-date-and-time))
  
- **slot_length** (object)
  
- **epoch_length** (object)
  
- **security_parameter** (object)
  
- **active_slot_coefficient** (object)
  
- **decentralization_level** (object)
  
- **desired_pool_number** (integer)
  
- **eras** (object)
  
If and when each era started or will start.

The object is keyed by era names. The values either describe the epoch boundary
when the era starts (can be in the future or in the past), or are null if not yet
confirmed on-chain.

If you need to know the current era, see the `node_era` field of
`GET /network/information`.

> Due to complications with our current tooling, we cannot mark the era names
> as required, but the keys are in fact always present.

- **maximum_collateral_input_count** (integer)
  The maximum number of collateral inputs that can be used in a single
transaction.

- **minimum_collateral_percentage** (integer)
  The minimum required amount of collateral as a percentage of the
total transaction fee.

- **maximum_token_bundle_size** (object)
  The maximum size of a serialized `TokenBundle`. The concept was added in Mary where
it was hard-coded to 4000 bytes. In Alonzo it was made an updateable protocol parameter (`_maxValSize`).

- **execution_unit_prices** (object)
  The price of time unit and memory unit used for calculating a fee of a script execution.



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