Add Tristero AUSD yield adapter by ggarza5 · Pull Request #2818 · DefiLlama/yield-server

ggarza5 · 2026-07-15T06:58:11Z

Summary

Add the Ethereum AUSD Tristero margin-lending vault to the yields adapter set.
Derive APY from the vault’s on-chain ratePerSecond asset parameter using standard daily compounding.
Derive TVL from the vault’s getTVOL(AUSD) balance and AUSD price.

Validation

git diff --check passes.
The adapter was manually exercised against live Ethereum contract data and returned TVL and APY values.

Arbitrum and Base deployments are intentionally excluded because they use USDC and need separate confirmation of their lender-yield treatment.

Summary by CodeRabbit

New Features
- Added Tristero’s AUSD margin-lending vault to yield tracking.
- Added reporting for vault total value and estimated APY, including a share price metric.
- Added a direct link to the Tristero app for more information.

coderabbitai · 2026-07-15T06:58:43Z

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 04238ed5-d8e2-437a-aa41-73a52e08d236

📥 Commits

Reviewing files that changed from the base of the PR and between 29a1b1e and f3bf91f.

📒 Files selected for processing (1)

src/adaptors/tristero-margin/index.js

🚧 Files skipped from review as they are similar to previous changes (1)

src/adaptors/tristero-margin/index.js

📝 Walkthrough

Walkthrough

Adds an Ethereum DeFiLlama adapter for Tristero’s AUSD margin-lending vault, reading vault and token data to calculate TVL, APY, and price per share, then exporting the configured pool handler and metadata.

Changes

Tristero AUSD margin adapter

Layer / File(s)	Summary
Vault state readers `src/adaptors/tristero-margin/index.js`	Defines Ethereum and AUSD constants and helpers for reading vault TVOL and asset rate data.
Pool metrics and adapter wiring `src/adaptors/tristero-margin/index.js`	Concurrently fetches vault and token values, calculates `tvlUsd` and guarded `apyBase`, includes `pricePerShare`, returns the pool record, and exports the adapter configuration.

Estimated code review effort: 2 (Simple) | ~10 minutes

Sequence Diagram(s)

sequenceDiagram
  participant poolsFunction
  participant TristeroVault
  participant AUSD
  participant MarketPrice
  poolsFunction->>TristeroVault: Read TVOL, asset rate, and share value
  poolsFunction->>AUSD: Read decimals
  poolsFunction->>MarketPrice: Fetch AUSD price
  poolsFunction->>poolsFunction: Calculate TVL and APY
  poolsFunction-->>poolsFunction: Return pool record

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: adding a Tristero AUSD yield adapter.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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github-actions · 2026-07-15T06:59:17Z

The tristero-margin adapter exports pools:

Test Suites: 1 passed, 1 total
Tests: 11 passed, 11 total
Snapshots: 0 total
Time: 0.229 s
Ran all test suites.

Nb of pools: 1
 

Sample pools:
┌─────────┬───────────────────────────────────────────────────────┬────────────┬───────────────────┬────────┬───────────────────┬───────────────────┬──────────────────────────────────────────────────┬─────────────────────────────┬────────────────────────────┬───────┐
│ (index) │ pool                                                  │ chain      │ project           │ symbol │ tvlUsd            │ apyBase           │ underlyingTokens                                 │ poolMeta                    │ url                        │ token │
├─────────┼───────────────────────────────────────────────────────┼────────────┼───────────────────┼────────┼───────────────────┼───────────────────┼──────────────────────────────────────────────────┼─────────────────────────────┼────────────────────────────┼───────┤
│ 0       │ '0xb49781e8c39c75f413c1178f395bf68b0bee8d00-ethereum' │ 'Ethereum' │ 'tristero-margin' │ 'AUSD' │ 35059.87830827656 │ 9.416214491141229 │ [ '0x00000000eFE302BEAA2b3e6e1b18d08D69a9012a' ] │ 'AUSD margin lending vault' │ 'https://app.tristero.com' │ null  │
└─────────┴───────────────────────────────────────────────────────┴────────────┴───────────────────┴────────┴───────────────────┴───────────────────┴──────────────────────────────────────────────────┴─────────────────────────────┴────────────────────────────┴───────┘

0xkr3p · 2026-07-16T11:44:43Z

+    underlyingTokens: [AUSD],
+    poolMeta: 'AUSD margin lending vault',
+    url: 'https://app.tristero.com',
+    token: null,


does the user receive a receipt token for depositing? if so this should be added here rather than null

Thanks — I checked the dapp implementation and the verified MarginVault source. Deposits mint ERC6909 shares on the MarginVault using the asset ID uint256(uint160(AUSD)); there is no standalone ERC20 receipt-token address. I therefore kept token: null to avoid misrepresenting holder analytics. I added pricePerShare using readValue(AUSD, 1e18), which returns the current time/rate-accrued index, and removed poolMeta. Commit: f3bf91f.

0xkr3p · 2026-07-16T11:44:59Z

+    apyBase,
+    underlyingTokens: [AUSD],
+    poolMeta: 'AUSD margin lending vault',
+    url: 'https://app.tristero.com',


add pricePerShare field

0xkr3p · 2026-07-16T11:48:46Z

+    tvlUsd,
+    apyBase,
+    underlyingTokens: [AUSD],
+    poolMeta: 'AUSD margin lending vault',


I don't think this pool meta adds anything valuable, can remove

0xkr3p

thanks for the PR @ggarza5, a few minor tweaks before we can move forwards

github-actions · 2026-07-16T21:29:54Z

The tristero-margin adapter exports pools:

Test Suites: 1 passed, 1 total
Tests: 13 passed, 13 total
Snapshots: 0 total
Time: 0.176 s
Ran all test suites.

Nb of pools: 1
 

Sample pools:
┌─────────┬───────────────────────────────────────────────────────┬────────────┬───────────────────┬────────┬───────────────────┬───────────────────┬────────────────────┬──────────────────────────────────────────────────┬────────────────────────────┬───────┐
│ (index) │ pool                                                  │ chain      │ project           │ symbol │ tvlUsd            │ apyBase           │ pricePerShare      │ underlyingTokens                                 │ url                        │ token │
├─────────┼───────────────────────────────────────────────────────┼────────────┼───────────────────┼────────┼───────────────────┼───────────────────┼────────────────────┼──────────────────────────────────────────────────┼────────────────────────────┼───────┤
│ 0       │ '0xb49781e8c39c75f413c1178f395bf68b0bee8d00-ethereum' │ 'Ethereum' │ 'tristero-margin' │ 'AUSD' │ 35081.35608637491 │ 9.416214491141229 │ 1.0054573212954137 │ [ '0x00000000eFE302BEAA2b3e6e1b18d08D69a9012a' ] │ 'https://app.tristero.com' │ null  │
└─────────┴───────────────────────────────────────────────────────┴────────────┴───────────────────┴────────┴───────────────────┴───────────────────┴────────────────────┴──────────────────────────────────────────────────┴────────────────────────────┴───────┘

Add Tristero AUSD yield adapter

29a1b1e

0xkr3p reviewed Jul 16, 2026

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Add AUSD share price to adapter

f3bf91f

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Add Tristero AUSD yield adapter#2818

Add Tristero AUSD yield adapter#2818
ggarza5 wants to merge 2 commits into
DefiLlama:masterfrom
ggarza5:agent/add-tristero-ausd-yield-adapter

ggarza5 commented Jul 15, 2026 •

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