Tax: look up a UK Self Assessment account's breakdown by UTR
1 operation7 models1 revision
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View schema- Spec
- OpenAPI 3.0.3
- Retrieved
- Jul 13, 2026, 20:48 UTC
- Digest
- ce866596af11
For agents
Every page here has a markdown twin. The overview is one fetch; the llms.txt lists every operation with a link to its own markdown.
curl https://skmtc.dev/hmrc/apis/self-assessment-liability-api.mdcurl https://skmtc.dev/hmrc/apis/self-assessment-liability-api/llms.txt