| Cover | Dec. 19, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 19, 2022 |
| Current Fiscal Year End Date | --12-31 |
| Entity File Number | 001-40467 |
| Entity Registrant Name | Iron Spark I Inc. |
| Entity Central Index Key | 0001845601 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 125 N. Cache St |
| Entity Address, Address Line Two | 2nd Floor, Box 3789 |
| Entity Address, City or Town | Jackson |
| Entity Address, State or Province | WY |
| Entity Address, Postal Zip Code | 83001 |
| City Area Code | 307 |
| Local Phone Number | 200-9007 |
| Written Communications | true |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A Common Stock, par value $0.0001 per share |
| Trading Symbol | ISAA |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
