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We want to ensure that we limit the risk of API downtime and provide a reliable and continuous service. Therefore we decided to implement API Keys to ensure that the requests come from genuine users.
You can use the same API key for different Snapshot APIs. Limits are counted individually per each API Service.

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Limits

🔓 No API Key: 100 requests per minute. 🔑 With the API Key: 2 million requests per month.
If you are getting close to 2M requests a month contact our support on Help center

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How can I get an API Key?

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1. Apply via the request form

If you haven’t already please fill in the below form or submit it via the direct link.

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API Key Request Form

https://tally.so/r/3laKWp

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2. Wait 72 hours

We will review your submission and whitelist the address you provided in the form. Once whitelisted, you will receive an email with your API key. If you haven’t received an email after 72 hours, please contact our support on Help center.

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How to structure the query with my key?

The only change you need to make is to add the API Key in the headers of your request: 
curl 'https://hub.snapshot.org/graphql?' \
  -H 'content-type: application/json' \
  -H 'x-api-key: <YOUR-API-KEY>' \
  --data-raw '{"query":"\n{\n space(id:\"snapshot.dcl.eth\"){\n  id\n  name\n  members\n}\n}","variables":null}' \
  --compressed
Alternatively, you can use the apiKey param in the query string with your key as a value: 
curl 'https://hub.snapshot.org/graphql?apiKey=<YOUR_API_KEY>' \
  -H 'content-type: application/json' \
  --data-raw '{"query":"\n{\n space(id:\"snapshot.dcl.eth\"){\n  id\n  name\n  members\n}\n}","variables":null}' \
  --compressed
If you are using the GraphQL interface you need to provide your key in the headers tab: