> For the complete documentation index, see [llms.txt](https://docs.viction.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.viction.xyz/how-to/how-to-check-if-a-token-is-gas-sponsored-on-viction.md).
# How to check if a token is gas sponsored on Viction
### **Step 1: Check if the Token is in the Sponsor List**
* **Objective:** Verify if the token is eligible for gas sponsorship.
* **Function:** Use the `tokens` function from the [Issuer Contract](https://www.vicscan.xyz/address/0x8c0faeb5c6bed2129b8674f262fd45c4e9468bee#code).
**Steps:**
1. Call the `tokens` function with the token address or identifier.
2. If the token exists in the sponsor list, proceed to Step 2. Otherwise, it is **not sponsored**.
### **Step 2: Check Token Capacity**
* **Objective:** Determine if the token has remaining gas sponsorship capacity.
* **Function:** Use the `getTokenCapacity` function.
**Steps:**
1. Call `getTokenCapacity` with the token address or identifier.
2. Interpret the response:
* **If > 0:** Token can sponsor gas.
* **If = 0:** Token sponsorship is exhausted. Transactions will be failed.
#### **Key Functions:**
Simple flow:
1. Call `tokens` to check sponsorship eligibility.
2. If eligible, call `getTokenCapacity` to validate capacity:
* 0: Sponsored.
* \= 0: Not sponsored.
3. Cache results for faster future checks.
---
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