enter
Call v154 → current #0Enter safe-mode permissionlessly by reserving a deposit.
View calls on chainCall Workflow
This diagram shows the call execution flow: starting with enter, passing through validation
(signature, nonce, mortality, fee payment), then pre-dispatch checks, followed by dispatch which emits events: Entered, DepositPlaced and modifies storage: EnteredUntil, Deposits, and finally post-dispatch where ExtrinsicSuccess is emitted and fees are settled.
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Used by: validatorsdevelopers
The Big Picture
Safe-mode is Bittensor's emergency brake. When enabled, certain network operations are paused to prevent damage during security incidents. Anyone can trigger it by putting up a deposit - this ensures only serious actors activate it.
Use Cases
- Emergency halt of network activity when security issues detected
- Temporary pause to investigate anomalous behavior
- Community-initiated protection measure with skin in the game
From Chain Metadata
Enter safe-mode permissionlessly for [`Config::EnterDuration`] blocks. Reserves [`Config::EnterDepositAmount`] from the caller's account. Emits an [`Event::Entered`] event on success. Errors with [`Error::Entered`] if the safe-mode is already entered. Errors with [`Error::NotConfigured`] if the deposit amount is `None`.
This call takes no parameters.
Permissions
Origin
Unknown
Required Role
Permission data inferred from metadata. May be incomplete.
Requirements
- Safe-mode is not already entered
- Caller has sufficient free balance for the deposit
- EnterDepositAmount is configured (not None)
Effects
Events Emitted
Storage Modified
Postconditions
- Safe-mode is entered for EnterDuration blocks
- Deposit amount reserved from caller's account
- EnteredUntil storage is set
Side Effects
- Network operations may be restricted during safe-mode
- Deposit tracked in Deposits storage for this account/block
Code Examples
import { createClient, Binary } from "polkadot-api";
import { getWsProvider } from "polkadot-api/ws";
import { sub } from "@polkadot-api/descriptors"; // generated by: npx papi add sub -w wss://entrypoint-finney.opentensor.ai:443
const client = createClient(getWsProvider("wss://entrypoint-finney.opentensor.ai:443"));
const api = client.getTypedApi(sub);
// Build enter call (no parameters)
const tx = api.tx.SafeMode.enter();Runtime Info
- Pallet Index
- 20
- Call Index
- 0
- First Version
- v154
- Current Version
- v411