docs(querying-tempo): interactive SQL queries with IndexSupplyQuery

src/pages/quickstart/querying-tempo.mdx

@@ -0,0 +1,136 @@
+---
+title: Querying Tempo
+description: Write correct analytics queries for Tempo. Covers fee units, TIP-20 decimals, Transfer events, fee_payer attribution, system transactions, and supply.
+showOutline: 1
+---
+
+import { IndexSupplyQuery } from '../../components/IndexSupplyQuery'
+
+# Querying Tempo
+
+Tempo is EVM-compatible, so most query patterns you already know work here. There are a handful of differences that will silently produce wrong numbers if you carry over Ethereum assumptions.
+
+Each example below is **interactive** — click **Run Query** to execute it against live Tempo mainnet data via [Index Supply](https://www.indexsupply.net). You can also edit the SQL before running.
+
+## 1. Fees are in USD, not ETH
+
+On Ethereum, gas price is in wei (10⁻¹⁸ ETH). On Tempo, it's in **attodollars** (10⁻¹⁸ USD). The fee calculation result is USD. There is no native token.
+
+Round to the nearest microdollar (how fees actually settle):
+
+<IndexSupplyQuery
+  chainId={4217}
+  title="Recent blocks — gas usage"
+  query={`SELECT
+  num AS block_num,
+  gas_used,
+  gas_limit
+FROM blocks
+ORDER BY num DESC
+LIMIT 10`}
+/>
+
+:::tip
+On analytics platforms like Dune, you can use `effective_gas_price * gas_used / 1e12 / 1e6` to get USD fees directly. The Index Supply query above shows raw block-level gas data you can use to compute the same.
+:::
+
+## 2. TIP-20 tokens use 6 decimals, not 18
+
+Divide token amounts by `1e6`. Using `1e18` gives a result 10¹² times too small.
+
+## 3. Use Transfer events for volume, not tx.value
+
+`tx.value` is always zero on Tempo. All token movement is in `Transfer` events.
+
+<IndexSupplyQuery
+  chainId={4217}
+  title="Recent TIP-20 transfers"
+  signatures={["Transfer"]}
+  query={`SELECT
+  block_num,
+  "from",
+  "to",
+  amount
+FROM transfer
+ORDER BY block_num DESC
+LIMIT 10`}
+/>
+
+`TransferWithMemo` (used by MPP) also emits a standard `Transfer`. Query only `Transfer` to avoid double-counting.
+
+## 4. Use COALESCE(fee_payer, from) for attribution
+
+Sponsored transactions populate a separate `fee_payer` field. Grouping by `from` attributes sponsored activity to the wrong address.
+
+<IndexSupplyQuery
+  chainId={4217}
+  title="Recent transactions — sender addresses"
+  query={`SELECT
+  block_num,
+  hash,
+  "from",
+  "to",
+  gas
+FROM txs
+ORDER BY block_num DESC
+LIMIT 10`}
+/>
+
+:::tip
+When using an analytics platform that exposes `fee_payer`, wrap your grouping as `COALESCE(fee_payer, "from")` to correctly attribute sponsored transactions.
+:::
+
+## 5. Exclude system transactions from user metrics
+
+`from = 0x0000…0000` is system-level. Include in raw chain metrics, exclude when measuring users.
+
+<IndexSupplyQuery
+  chainId={4217}
+  title="Recent user transactions (excluding system)"
+  query={`SELECT
+  block_num,
+  hash,
+  "from",
+  "to",
+  gas
+FROM txs
+WHERE "from" != '0x0000000000000000000000000000000000000000'
+ORDER BY block_num DESC
+LIMIT 10`}
+/>
+
+## 6. Compute supply from Transfer events, not Mint events
+
+Genesis mints may not emit `Mint`. Derive supply from `Transfer`: mints have `from = 0x0…0`, burns have `to = 0x0…0`.
+
+<IndexSupplyQuery
+  chainId={4217}
+  title="Recent mints (from = 0x0)"
+  signatures={["Transfer"]}
+  query={`SELECT
+  block_num,
+  "to" AS recipient,
+  amount
+FROM transfer
+WHERE "from" = '0x0000000000000000000000000000000000000000'
+ORDER BY block_num DESC
+LIMIT 10`}
+/>
+
+## Key addresses
+
+| Contract | Address |
+| --- | --- |
+| FeeManager | `0xfeec000000000000000000000000000000000000` |
+| Stablecoin DEX | `0xdec0000000000000000000000000000000000000` |
+| TIP-20 Factory | `0x20fc000000000000000000000000000000000000` |
+| pathUSD | `0x20c0000000000000000000000000000000000000` |
+
+## Networks
+
+| | Mainnet | Testnet (Moderato) |
+| --- | --- | --- |
+| Chain ID | `4217` | `42431` |
+| RPC | `https://rpc.tempo.xyz` | `https://rpc.moderato.tempo.xyz` |
+| Explorer | `https://explore.tempo.xyz` | `https://explore.testnet.tempo.xyz` |
+| Tokenlist | `https://tokenlist.tempo.xyz/list/4217` | `https://tokenlist.tempo.xyz/list/42431` |

vite.config.ts

@@ -124,6 +124,13 @@ function syncTips(): Plugin {
         // Escape angle brackets outside of code blocks/inline code so MDX doesn't
         // treat them as JSX (e.g. `Mapping<B256, bool>` in prose).
         content = escapeAngleBrackets(content)
+        // Quote frontmatter `authors:` values that start with a YAML reserved
+        // character (e.g. `@handle`). Upstream TIPs occasionally include GitHub
+        // handles like `@0xrusowsky`, which break YAML parsing unless quoted.
+        content = content.replace(
+          /^(authors:\s*)([@&*!|>%#`].*)$/m,
+          (_m, prefix, value) => `${prefix}"${value.replace(/"/g, '\\"')}"`,
+        )
         const outputPath = path.join(outputDir, file.name.replace('.md', '.mdx'))
         await fs.writeFile(outputPath, content)
       }),

vocs.config.ts

@@ -444,6 +444,10 @@ export default defineConfig({
             text: 'Wallet Developers',
             link: '/quickstart/wallet-developers',
           },
+          {
+            text: 'Querying Tempo',
+            link: '/quickstart/querying-tempo',
+          },
           {
             text: 'Contract Verification',
             link: '/quickstart/verify-contracts',