37 lines
1.3 KiB
Markdown
37 lines
1.3 KiB
Markdown
# API Troubleshooting
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## Types: params
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`params` must be an array. If there are no `params` you should still pass an empty array.
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## Types: TipSet
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For methods such as `Filecoin.StateMinerPower`, where the method accepts the argument of the type `TipSet`, you can pass `null` to use the current chain head.
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```sh
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curl -X POST \
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-H "Content-Type: application/json" \
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--data '{ "jsonrpc": "2.0", "method": "Filecoin.StateMinerPower", "params": ["t0101", null], "id": 3 }' \
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'http://127.0.0.1:1234/rpc/v0'
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```
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## Types: Sending a CID
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If you do not serialize the CID as a [JSON IPLD link](https://did-ipid.github.io/ipid-did-method/#txref), you will receive an error. Here is an example of a broken CURL request:
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```sh
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curl -X POST \
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-H "Content-Type: application/json" \
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--data '{ "jsonrpc": "2.0", "method":"Filecoin.ClientGetDealInfo", "params": ["bafyreiaxl446wlnu6t6dpq4ivrjf4gda4gvsoi4rr6mpxau7z25xvk5pl4"], "id": 0 }' \
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'http://127.0.0.1:1234/rpc/v0'
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```
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To fix it, change the `params` property to:
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```sh
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curl -X POST \
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-H "Content-Type: application/json" \
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--data '{ "jsonrpc": "2.0", "method":"Filecoin.ClientGetDealInfo", "params": [{"/": "bafyreiaxl446wlnu6t6dpq4ivrjf4gda4gvsoi4rr6mpxau7z25xvk5pl4"}], "id": 0 }' \
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'http://127.0.0.1:1234/rpc/v0'
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```
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