← Files Solved Tax & LegalARCHIVED FILE
plugin.json
7.04 KB · Nov 3, 2026 · 19:12 UTC
{
"$schema": "https://agent-plugins.org/schemas/1.0.0/plugin.schema.json",
"name": "solved-tax-legal",
"version": "1.0.0",
"description": "UK tax and legal research grounded in legislation, HMRC guidance and case law, with a citation for every source.",
"author": {
"name": "Solved Technologies Ltd",
"email": "support@solved.legal",
"url": "https://solved.legal"
},
"homepage": "https://solved.legal",
"extensions": {
"com.openai": {
"interface": {
"displayName": "Solved Tax & Legal",
"shortDescription": "UK tax and legal research",
"longDescription": "Solved gives ChatGPT direct access to UK tax and legal sources: legislation (including how it read on any past date), HMRC guidance, and case law archives that search engines can't reach. ChatGPT cites every source it uses, and each citation links to the full text on solved.legal so you can check it yourself.\n\nFor businesses: Get answers grounded in the actual law, not AI guesswork. Ask your advisors better questions and sense-check the advice you receive.\n\nFor tax professionals: Research faster without losing rigour. Every answer is built to be reviewed: clear citations, point-in-time legislation, and access to tribunal decisions beyond the reach of ordinary AI tools.\n\nUK only, for now.",
"developerName": "Solved Technologies Ltd",
"websiteURL": "https://solved.legal",
"supportURL": "https://solved.legal/docs/connect-chatgpt",
"privacyPolicyURL": "https://solved.legal/privacy",
"termsOfServiceURL": "https://solved.legal/terms-of-service",
"brandColor": "#006B75",
"logo": "./assets/logo.png",
"category": "Education & Research"
},
"review": {
"test_cases": {
"positive": [
{
"description": "Current HMRC guidance: when a business must register for VAT because of one large contract.",
"prompt": "Using Solved: my business has just signed a single contract worth more than the VAT registration threshold, and I will supply all of it within the next 30 days. When do I need to tell HMRC, and from when would I be registered?",
"tools_triggered": "search_legal_sources, read_legal_source",
"expected_behavior": "ChatGPT searches HMRC guidance (source hmrc_guidance) and reads the VAT Registration Manual pages on the 30-day 'forward look', such as VATREG18200 and VATREG18300, and on the effective date of registration (VATREG25100). It explains the forward-look test, when HMRC must be notified and the date registration takes effect, and cites each page it relied on with its solved.legal link. It may note that HMRC guidance is HMRC's view rather than law."
},
{
"description": "Legislation as it stood on a past date: the business asset disposal relief rate for a 2024 sale.",
"prompt": "Using Solved: I sold my trading company shares on 1 June 2024 and qualified for business asset disposal relief. What rate of capital gains tax applied to that gain under the legislation in force at the time?",
"tools_triggered": "search_legal_sources, read_legal_source",
"expected_behavior": "ChatGPT searches legislation as at 2024-06-01 and reads Taxation of Chargeable Gains Act 1992 s 169N as it stood on that date. It answers 10%, quoting s 169N(3), and cites the dated solved.legal link for that version. It may note that the rate has since changed."
},
{
"description": "How a provision changed between two dates: business asset disposal relief rate from April 2025 to April 2026.",
"prompt": "Using Solved: how did the business asset disposal relief rate in TCGA 1992 s 169N change between 6 April 2025 and 6 April 2026, and what made the change?",
"tools_triggered": "search_legal_sources, compare_versions",
"expected_behavior": "ChatGPT finds Taxation of Chargeable Gains Act 1992 s 169N and compares its versions in force on 2025-04-06 and 2026-04-06. It reports that s 169N(3) changed the rate from 14% to 18%, substituted by Finance Act 2025 s 8, and links the solved.legal comparison page that highlights the change."
},
{
"description": "UK case law: tribunal decisions on IR35 and mutuality of obligation.",
"prompt": "Using Solved: find UK tribunal decisions on IR35 that discuss mutuality of obligation, and summarise what one of them decided.",
"tools_triggered": "search_legal_sources, read_legal_source",
"expected_behavior": "ChatGPT searches case law (source case_law) and reads at least one judgment it summarises, such as HMRC v RALC Consulting Ltd [2024] UKUT 99 (TCC). It summarises what the tribunal decided on mutuality of obligation, gives the neutral citation and links the judgment on solved.legal."
},
{
"description": "Reporting a gap or problem to Solved.",
"prompt": "Using Solved: please tell Solved that I could not find the VAT registration threshold in Schedule 1 to the Value Added Tax Act 1994 by searching for \"VATA 1994 Sch 1 para 1\".",
"tools_triggered": "report_solved_feedback",
"expected_behavior": "ChatGPT calls report_solved_feedback with category missing_source or error and the query involved, possibly after a search to confirm the problem. It reports the outcome the tool returns and does not claim that the feedback has been acted on."
}
],
"negative": [
{
"description": "A tax question about another country, asked of Solved. Solved holds UK sources only, so ChatGPT should explain that Solved covers UK law only and should not present UK legislation or guidance as the answer to a US question.",
"prompt": "Using Solved: what is the US federal income tax rate for a single filer earning $80,000 in 2025?"
},
{
"description": "A request unrelated to law or tax. Solved has nothing to contribute, so ChatGPT should answer without calling any Solved tool.",
"prompt": "Write a short poem about autumn in London."
},
{
"description": "A request to act with HMRC. Solved is read-only research and cannot file returns or contact HMRC, so ChatGPT should not call Solved's tools as if they could. It should explain that it cannot file the return, and that VAT returns are filed through Making Tax Digital compatible software, directly or through an agent.",
"prompt": "Using Solved: file my VAT return with HMRC for the quarter ending 30 September 2026."
}
]
},
"demo_recording_url": "https://assets.solved.legal/video/solved-chatgpt-review-walkthrough.webm"
},
"publication": {
"release_notes": "Initial release of Solved Tax & Legal for ChatGPT: UK legislation, HMRC guidance and case law research, with source links and point-in-time legislation comparisons."
},
"apps": "./.app.json"
}
}
}
SHA-256: d7a01820b6356b8ce01873d2884170182548a8d32cf3aa348b553894e3d731d9