Documentation Index
Fetch the complete documentation index at: https://docs.extractor.live/llms.txt
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Overview
The Total Supply Monitor is a daily monitoring tool that tracks the total supply of a token contract on a blockchain network. It queries on-chain mint and burn event logs via Dune Analytics and compares the result against user-defined expected values.
An alert is emitted on every scheduled run:
- Info — the current issued supply is within the expected limit (no anomaly detected)
- Warning / custom — the current issued supply exceeds the expected issued amount (potential over-minting)
Expected Total Supply
The hard cap or maximum authorised supply of the token, expressed as a whole-unit integer (i.e. already divided by token decimals).
| Field | Type | Required |
|---|
expected_total_supply | int | Yes |
Example: for a token with a 1 billion cap and 18 decimals, set this to 1000000000.
Expected Total Issued
The maximum number of tokens that should currently be in circulation. The detector compares the live on-chain issued supply against this value.
| Field | Type | Required |
|---|
expected_total_issued | int | Yes |
- If
current issued supply ≤ expected_total_issued → Info alert (supply is within bounds)
- If
current issued supply > expected_total_issued → Warning alert (supply exceeds expectation)
Decimals
The number of decimal places used by the token contract. Used to convert raw on-chain values to human-readable units before comparison.
| Field | Type | Default |
|---|
decimals | int | 18 |
Most ERC-20 tokens use 18 decimals. Override this for tokens that use a different precision (e.g. USDC uses 6).
Severity
Controls the severity level assigned to mismatch alerts (when the issued supply exceeds expected_total_issued).
| Value | Behaviour |
|---|
| (not set) | Defaults to Medium (0.5) on mismatch; Info (0.1) on match |
| Custom value | Applied on mismatch; Info is always used on match |
- Info alerts are always emitted when the supply is within bounds, regardless of this setting.
- This field only affects the severity of anomaly alerts.
Every alert emitted by this monitor includes the following fields in its metadata:
| Field | Description |
|---|
monitored_contract | Address of the token contract being monitored |
expected_supply | Configured expected_total_supply value |
expected_issued | Configured expected_total_issued value |
current_issued | Live total supply queried from Dune Analytics (adjusted for decimals) |
current_minted | Total tokens minted to date (adjusted for decimals) |
current_burned | Total tokens burned to date (adjusted for decimals) |
Alert Types
| Event Type | Severity | Trigger Condition |
|---|
total_supply_issued_match | Info | current_issued ≤ expected_total_issued |
total_supply_issued_mismatch | Warning (or custom) | current_issued > expected_total_issued |