Invalid signature when creating orders in negative risk market

[dmitry-dzyuba-uinno]

Overview

When trying to create an order in negative risk market, it gives me an error "invalid signature", creating orders for non-negative risk markets works fine.

Code sample

#...
resp = client.create_and_post_order(OrderArgs(
    price=0.01,
    size=5.0,
    side=BUY,
    token_id="23879627426961662812922169694268707374662971136118079896087093103802667054172"
))

Response

Traceback (most recent call last):
  File "/var/www/html/scripts/py-clob-client/create_and_post_order.py", line 32, in <module>
    resp = client.create_and_post_order(OrderArgs(
  File "/var/www/html/scripts/py-clob-client/py_clob_client/client.py", line 314, in create_and_post_order
    return self.post_order(ord)
  File "/var/www/html/scripts/py-clob-client/py_clob_client/client.py", line 305, in post_order
    return post("{}{}".format(self.host, POST_ORDER), headers=headers, data=body)
  File "/var/www/html/scripts/py-clob-client/py_clob_client/http_helpers/helpers.py", line 48, in post
    return request(endpoint, POST, headers, data)
  File "/var/www/html/scripts/py-clob-client/py_clob_client/http_helpers/helpers.py", line 41, in request
    raise PolyApiException(resp)
py_clob_client.exceptions.PolyApiException: PolyApiException[status_code=400, error_message={'error': 'invalid signature'}]

I was initially using version v0.11.0, but it's same on v0.16.0

[zlandme]

I had the same question, how can I resolve this question？

[dmitry-dzyuba-uinno]

@zlandme I actually figured this out, the official example doesn't include this, but in recent versions you need to actually pass a parameter to the function if it's negative risk market or not. Here is an example:

ord = client.create_order(OrderArgs(
    price=args.price,
    size=args.size,
    side=args.side,
    token_id=args.token_id,
    expiration=args.expiration
), PartialCreateOrderOptions(
    neg_risk=args.neg_risk
))

resp = client.post_order(ord, order_type)

[zlandme]

@zlandme I actually figured this out, the official example doesn't include this, but in recent versions you need to actually pass a parameter to the function if it's negative risk market or not. Here is an example:

ord = client.create_order(OrderArgs(
    price=args.price,
    size=args.size,
    side=args.side,
    token_id=args.token_id,
    expiration=args.expiration
), PartialCreateOrderOptions(
    neg_risk=args.neg_risk
))

resp = client.post_order(ord, order_type)

@dmitry-dzyuba-uinno YEAH, you are right, It solved the problem of wrong signature, but I got a new problem, when I create_and_post order, it give me error "PolyApiException[status_code=400, error_message={'error': 'not enough balance / allowance'}]", I have done the approve, and there are funds in my account, and I can get the fund with my address in the collateral contract address. how can I resolve this question？

[vince-gt]

I'm having the same problem:
py_clob_client.exceptions.PolyApiException: PolyApiException[status_code=400, error_message={'error': 'invalid signature'}]
Tried with Python 3.12.3 then tried Python 3.9.10. negRisk true or false does not matter. Using the py-clob-client v0.17.5.
Tried rolling back a few versions with:
pip install --force-reinstall -v "py-clob-client==0.xx.x"
No luck.
@dmitry-dzyuba-uinno How did you resolve the invalid signature problem?

[vince-gt]

@zlandme I actually figured this out, the official example doesn't include this, but in recent versions you need to actually pass a parameter to the function if it's negative risk market or not. Here is an example:

ord = client.create_order(OrderArgs(
    price=args.price,
    size=args.size,
    side=args.side,
    token_id=args.token_id,
    expiration=args.expiration
), PartialCreateOrderOptions(
    neg_risk=args.neg_risk
))

resp = client.post_order(ord, order_type)

@dmitry-dzyuba-uinno YEAH, you are right, It solved the problem of wrong signature, but I got a new problem, when I create_and_post order, it give me error "PolyApiException[status_code=400, error_message={'error': 'not enough balance / allowance'}]", I have done the approve, and there are funds in my account, and I can get the fund with my address in the collateral contract address. how can I resolve this question？

Have you tried setting the token allowances as described in the read me? This script fixed it for me. I had to make some changes to get it to run though.
getTransactionCount -> get_transaction_count
buildTransaction -> build_transaction
rawTransaction -> raw_transaction

[vince-gt]

Got this working with help from Isulls50 on Discord.
"as a Python moron like countless above, it should be pinned that 'funder=' should be the browser Polymarket Wallet address in the top right under your profile name, NOT YOUR METAMASK! This was the solution to 'invalid signature' for me and i would bet thousands that it's what other people are messing up too"
https://discord.com/channels/710897173927297116/782024576275447848/1267323493209342073

[ben0x01]

Who solve the problem with - "py_clob_client.exceptions.PolyApiException: PolyApiException[status_code=400, error_message={'error': 'not enough balance / allowance'}]"?

I try to sell my positions but gett error

[hsz0403]

same as ben0x01

[ben0x01]

Bro, sometimes the library is stupid :D
Wait and restart use your script. I really cannot to understand why it's help, but it work)

But maybe u don't have approve. Check it and if u will have problem, give any time and restart!

[theo-wq]

hi i have the same probleme but how do you import the "PartialCreateOrderOptions" Thanks a lot

[vince-gt]

You will likely get a quicker response on Discord https://discord.com/channels/710897173927297116/782024576275447848

[gaurav-gupta]

@zlandme I actually figured this out, the official example doesn't include this, but in recent versions you need to actually pass a parameter to the function if it's negative risk market or not. Here is an example:

ord = client.create_order(OrderArgs(
    price=args.price,
    size=args.size,
    side=args.side,
    token_id=args.token_id,
    expiration=args.expiration
), PartialCreateOrderOptions(
    neg_risk=args.neg_risk
))

resp = client.post_order(ord, order_type)

I used this PartialCreateOrderOptions but i am still getting the same invalid signature error. I am trying on Amoy(Polygon Testnet). I am using following Code:

chain_id=80002
host = "https://clob.polymarket.com/"
client = ClobClient(host, key=key, chain_id=chain_id, creds=creds)

order_args = OrderArgs(
price=0.61,
size=20.0,
side=BUY,
token_id="78822899299915307362556468638952770457130673485124805089798216644749639353797",
)
signed_order = client.create_order(order_args, PartialCreateOrderOptions(
neg_risk=True
))
print(signed_order)

GTC Order

resp = client.post_order(signed_order, OrderType.GTC)
print(resp)

[lucashhan]

@gaurav-gupta ,Yes I also met this problem after adding the PartialCreateOrderOptions