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HTTP/API

Practice request contracts, headers, pagination, parsing, CORS behavior, and API edge cases.

Skills trained

  • checkRead request paths
  • checkValidate API contracts
  • checkReproduce boundary cases

Recommended path

terminalThe Missing Header
Easychevron_right
terminalPagination off by one
Easychevron_right
terminalCORS origin parsing bug
Mediumchevron_right

Ready incidents

Playable now through the existing challenge engine.

terminalThe Missing Header
Easychevron_right
terminalPagination off by one
Easychevron_right
terminalCORS origin parsing bug
Mediumchevron_right
terminalThe File That Left the Vault
Mediumchevron_right
terminalThe Filter That Swallowed False
Mediumchevron_right
terminalThe Redirect That Left the Building
Mediumchevron_right
terminalThe Webhook That Trusted Silence
Mediumchevron_right

Planned Debugging 50 patterns

Visible for roadmap context only. These entries are not playable.

17Boolean Query Param Trap
Planned
18Header Case Mismatch
Planned
21Off By One Page Start
Planned
23Missing Content-Type Charset
Planned
25Empty Array Treated As Missing
Planned
30Pagination Last Page Empty
Planned
52Log Redaction Missing
Planned