# a contract review tool **Contract review is already crowded, but there is still room for a workflow-specific tool with better guardrails and outputs lawyers actually use.** Confidence: high · 128 signals · checked 2026-08-01 [Full report with live links](https://showsitsworks.com/idea/contract-review-tool) ## Who is already building this *From data* - zubair-trabzada/ai-legal-claude has 1,605 stars and is still maintained, with a last push on 2026-03-27. It covers contract review, risk analysis, NDA generation, compliance auditing, negotiation strategy, and PDF reports. - [zubair-trabzada/ai-legal-claude](https://github.com/zubair-trabzada/ai-legal-claude) `github` — 2026-03-26 - evolsb/claude-legal-skill has 390 stars and is still maintained, with a last push on 2026-07-23. It offers CUAD risk detection, market benchmarks, and lawyer-ready redlines. - [evolsb/claude-legal-skill](https://github.com/evolsb/claude-legal-skill) `github` — 2026-01-26 - vikashjeyaraman/opencouncil-contract-inspector has 151 stars and is still maintained, with a last push on 2026-08-02. It is positioned as a multi-agent AI review system. - [vikashjeyaraman/opencouncil-contract-inspector](https://github.com/vikashjeyaraman/opencouncil-contract-inspector) `github` — 2026-06-28 - xiaodingfeng/contract-review has 131 stars and is still maintained, with a last push on 2026-07-27. It is a Chinese contract review web app with upload, AI pre-analysis, review-point configuration, OnlyOffice editing, knowledge-base search, and asked Q&A. - [xiaodingfeng/contract-review](https://github.com/xiaodingfeng/contract-review) `github` — 2025-06-08 - Azure-Samples/ally-legal-assistant has 80 stars and is stale, with a last push on 2025-04-29. It is a Word plugin for contract analysis, real-time Q&A, and auto-markup. - [Azure-Samples/ally-legal-assistant](https://github.com/Azure-Samples/ally-legal-assistant) `github` — 2024-10-02 - Hexens/Smart-Contract-Review-Public-Reports has 58 stars and is still maintained, with a last push on 2026-07-24, but it is about public smart contract audit reports rather than ordinary legal contracts. - [Hexens/Smart-Contract-Review-Public-Reports](https://github.com/Hexens/Smart-Contract-Review-Public-Reports) `github` — 2022-03-01 ## What people actually say *From data* - "A simple tool for people like me whose brain hurts when they read any legal document full of bloated jargon." This HN post is a plain complaint about contract-reading pain. - [Show HN: Docu – Never sign a sketchy contract again. GPT-4 contract review](https://news.ycombinator.com/item?id=38457775) `hackernews` — 2023-11-29 - "I had lunch with a lawyer friend today, who told me that their morning was surreal." This HN comment continues by saying an AI contract review tool produced worse recommendations than a lawyer would have made. - [Tell HN: AI legal contract review is already screwing up](https://news.ycombinator.com/item?id=36422807) `hackernews` — 2023-06-21 - "I'm a free-lancer, and occasionally need help creating/reviewing contracts for various projects." This HN question is from someone looking for help with contract review, not just casual curiosity. - [Ask HN: help finding attorney for contract review?](https://news.ycombinator.com/item?id=3419384) `hackernews` — 2012-01-03 - "I'd pay the couple hundred bucks to have my attorney review my previous contract while I was negotiating my new improved salary." This is a clear first-person willingness to spend on review help. - [Legality/ethics of working for a competitor](https://news.ycombinator.com/item?id=5406037) `intent` — 2013-03-20 - "My sense is that this would prevent 98% of papers in the social sciences from ever being published." This is not about legal contracts, so the search only partially matched the topic and the first-hand signal is off-target. - [Nature retracts paper that claimed adult stem cell could become any type of cell](https://news.ycombinator.com/item?id=40725661) `intent` — 2024-06-19 ## People asking to be sold to *From data* - "I'd pay the couple hundred bucks to have my attorney review my previous contract" is explicit willingness to pay for review help. - [Legality/ethics of working for a competitor](https://news.ycombinator.com/item?id=5406037) `intent` — 2013-03-20 - "I created this legal contract review app... for small and medium-sized enterprises who do not have an in-house lawyer/legal team" shows demand from teams that want a paid alternative to internal counsel. - [Show HN: Legal Contract Review App](https://news.ycombinator.com/item?id=41125717) `hackernews` — 2024-08-01 - "AI contract review inside Word – first law firm signing this week" is a direct buying signal from a live HN thread, even though the post itself is sparse. - [AI contract review inside Word – first law firm signing this week](https://news.ycombinator.com/item?id=49107572) `hackernews` — 2026-07-30 - "AI-powered contract review and role-enforced approval workflow" in the npm package description points to buyers who need not just analysis, but review plus approval routing. - [npm: @excelium-tech/contract-approval](https://www.npmjs.com/package/@excelium-tech/contract-approval) `registries` — 2026-07-19 - "No. You can upload and review contracts immediately without any sign-up" is a conversion-oriented claim from a live commercial page, suggesting people are expected to try before buying. - [Free Contract Review - AI Analysis in Seconds | Justee](https://justee.ai/free-contract-review) `tavily` ## Where the opening is *Model estimate* - The current players mostly do first-pass analysis, redlines, clause detection, or Word add-ins. The signals do not show one product that turns a contract into a full review package with versioned decisions, approval workflow, and lawyer-grade output in a way that is clearly built for non-lawyer business users. - [zubair-trabzada/ai-legal-claude](https://github.com/zubair-trabzada/ai-legal-claude) `github` — 2026-03-26 - [evolsb/claude-legal-skill](https://github.com/evolsb/claude-legal-skill) `github` — 2026-01-26 - [npm: @excelium-tech/contract-approval](https://www.npmjs.com/package/@excelium-tech/contract-approval) `registries` — 2026-07-19 - [Azure-Samples/ally-legal-assistant](https://github.com/Azure-Samples/ally-legal-assistant) `github` — 2024-10-02 - [Vaquill-AI/ms-word-addin](https://github.com/Vaquill-AI/ms-word-addin) `github` — 2026-07-10 - [evolsb/legal-redline-tools](https://github.com/evolsb/legal-redline-tools) `github` — 2026-02-19 - [yuch85/contract-playbook-ai](https://github.com/yuch85/contract-playbook-ai) `github` — 2025-12-05 - [npm: dingdawg-legal-agent](https://www.npmjs.com/package/dingdawg-legal-agent) `registries` — 2026-07-15 - [npm: contract-review-ai-mcp](https://www.npmjs.com/package/contract-review-ai-mcp) `registries` — 2026-05-04 - There is also no clear evidence of a tool focused on accountable review trails, where every recommendation is signed, receipted, and auditable for regulated buyers. - [npm: dingdawg-legal-agent](https://www.npmjs.com/package/dingdawg-legal-agent) `registries` — 2026-07-15 - Several projects are narrow or format-specific: Word plugins, redline generators, smart-contract auditors, or clause taxonomies. The data does not show a dominant end-to-end workflow product for ordinary commercial contracts. - [Azure-Samples/ally-legal-assistant](https://github.com/Azure-Samples/ally-legal-assistant) `github` — 2024-10-02 - [crytic/diffusc](https://github.com/crytic/diffusc) `github` — 2023-07-05 - [evolsb/legal-redline-tools](https://github.com/evolsb/legal-redline-tools) `github` — 2026-02-19 - [npm: bach-notion-mcp](https://www.npmjs.com/package/bach-notion-mcp) `registries` — 2026-06-30 - [ConsenSysDiligence/0x-review](https://github.com/ConsenSysDiligence/0x-review) `github` — 2017-08-04 ## How big the market might be *Model estimate* - This search found 12 named open-source projects, and 5 of them are active. - The largest open-source project in the set has 1,605 stars and is still maintained. - [zubair-trabzada/ai-legal-claude](https://github.com/zubair-trabzada/ai-legal-claude) `github` — 2026-03-26 - There were 34 first-hand complaints, 8 stated wants, and 2 unsolved Stack Exchange questions in the search results. - Matching threads appeared in 6 communities: community.home-assistant.io, community.n8n.io, community.openai.com, discuss.elastic.co, discuss.python.org, and meta.discourse.org. - Commercial usage signals are real but still modest in this search: npm packages showed 670, 506, 129, 126, and 38 monthly downloads for contract-review-related tools. - [npm: @excelium-tech/contract-approval](https://www.npmjs.com/package/@excelium-tech/contract-approval) `registries` — 2026-07-19 - [npm: @intentsolutionsio/general-legal-assistant](https://www.npmjs.com/package/@intentsolutionsio/general-legal-assistant) `registries` — 2026-06-19 - [npm: bach-notion-mcp](https://www.npmjs.com/package/bach-notion-mcp) `registries` — 2026-06-30 - [npm: dingdawg-legal-agent](https://www.npmjs.com/package/dingdawg-legal-agent) `registries` — 2026-07-15 - [npm: contract-review-ai-mcp](https://www.npmjs.com/package/contract-review-ai-mcp) `registries` — 2026-05-04 ## What could go wrong *Model estimate* - This is a crowded category with many adjacent tools already claiming AI review, redlines, compliance, or Word integration. - [zubair-trabzada/ai-legal-claude](https://github.com/zubair-trabzada/ai-legal-claude) `github` — 2026-03-26 - [evolsb/claude-legal-skill](https://github.com/evolsb/claude-legal-skill) `github` — 2026-01-26 - [Azure-Samples/ally-legal-assistant](https://github.com/Azure-Samples/ally-legal-assistant) `github` — 2024-10-02 - [Vaquill-AI/ms-word-addin](https://github.com/Vaquill-AI/ms-word-addin) `github` — 2026-07-10 - [evolsb/legal-redline-tools](https://github.com/evolsb/legal-redline-tools) `github` — 2026-02-19 - [yuch85/contract-playbook-ai](https://github.com/yuch85/contract-playbook-ai) `github` — 2025-12-05 - [AI Contract Review Software: Complete 2026 Buyer's Guide](https://www.legalontech.com/ai-contract-review-software) `tavily` - [Online contract review with AI | Legly](https://www.legly.io) `tavily` - Quality risk is severe: one HN post says AI recommendations were worse than a lawyer's, and another thread warns that AI contract review is already screwing up. - [Tell HN: AI legal contract review is already screwing up](https://news.ycombinator.com/item?id=36422807) `hackernews` — 2023-06-21 - [AI contract review for people afraid to sign](https://news.ycombinator.com/item?id=47545254) `hackernews` — 2026-03-27 - Trust and liability are the core problem, not just text analysis. If the product cannot explain, audit, and constrain suggestions, buyers may not trust it. - [(Bug): Prompt injection from untrusted PR content can drive privileged auto-resolve and review-fix contracts](https://github.com/iterwheel/voyager/issues/254) `githubissues` — 2026-07-02 - [npm: dingdawg-legal-agent](https://www.npmjs.com/package/dingdawg-legal-agent) `registries` — 2026-07-15 - [slice(#552): define stable unsafe-site, safety-contract, and review-receipt identities](https://github.com/EffortlessMetrics/unsafe-review/issues/553) `githubissues` — 2026-07-24 - Some of the strongest open-source competitors are recent and still maintained, so this is not a dead market where a weak launch can hide. - [zubair-trabzada/ai-legal-claude](https://github.com/zubair-trabzada/ai-legal-claude) `github` — 2026-03-26 - [evolsb/claude-legal-skill](https://github.com/evolsb/claude-legal-skill) `github` — 2026-01-26 - [vikashjeyaraman/opencouncil-contract-inspector](https://github.com/vikashjeyaraman/opencouncil-contract-inspector) `github` — 2026-06-28 - [xiaodingfeng/contract-review](https://github.com/xiaodingfeng/contract-review) `github` — 2025-06-08 - [Vaquill-AI/ms-word-addin](https://github.com/Vaquill-AI/ms-word-addin) `github` — 2026-07-10 ## What to do this week *Model estimate* - Target one narrow workflow first: e.g. contract review for SMBs without in-house counsel, or a Word-based redline assistant for lawyers. - [Azure-Samples/ally-legal-assistant](https://github.com/Azure-Samples/ally-legal-assistant) `github` — 2024-10-02 - [Vaquill-AI/ms-word-addin](https://github.com/Vaquill-AI/ms-word-addin) `github` — 2026-07-10 - [Show HN: Legal Contract Review App](https://news.ycombinator.com/item?id=41125717) `hackernews` — 2024-08-01 - Differentiate on audit trail and decision control, not just clause detection. The signals point to buyers who care about review quality and accountability. - [npm: @excelium-tech/contract-approval](https://www.npmjs.com/package/@excelium-tech/contract-approval) `registries` — 2026-07-19 - [(Bug): Prompt injection from untrusted PR content can drive privileged auto-resolve and review-fix contracts](https://github.com/iterwheel/voyager/issues/254) `githubissues` — 2026-07-02 - [npm: dingdawg-legal-agent](https://www.npmjs.com/package/dingdawg-legal-agent) `registries` — 2026-07-15 - [slice(#552): define stable unsafe-site, safety-contract, and review-receipt identities](https://github.com/EffortlessMetrics/unsafe-review/issues/553) `githubissues` — 2026-07-24 - Ship around a concrete deliverable lawyers already send: tracked-changes Word docs, redline PDFs, and a concise risk memo. - [evolsb/claude-legal-skill](https://github.com/evolsb/claude-legal-skill) `github` — 2026-01-26 - [evolsb/legal-redline-tools](https://github.com/evolsb/legal-redline-tools) `github` — 2026-02-19 - Test whether users want contract review for general business contracts, not only legal teams and not only smart contracts. - [crytic/diffusc](https://github.com/crytic/diffusc) `github` — 2023-07-05 - [Hexens/Smart-Contract-Review-Public-Reports](https://github.com/Hexens/Smart-Contract-Review-Public-Reports) `github` — 2022-03-01 - [boomcrypto/clarity-deployed-contracts](https://github.com/boomcrypto/clarity-deployed-contracts) `github` — 2021-12-11 - [AI Contract Review Software: Complete 2026 Buyer's Guide](https://www.legalontech.com/ai-contract-review-software) `tavily` ## Competitor strength | Project | Stars | Downloads/mo | Activity | |---|---:|---:|---| | [zubair-trabzada/ai-legal-claude](https://github.com/zubair-trabzada/ai-legal-claude) | 1,605 | — | slow | | [evolsb/claude-legal-skill](https://github.com/evolsb/claude-legal-skill) | 390 | — | active | | [CSlawyer1985/contract-review-pro](https://github.com/CSlawyer1985/contract-review-pro) | 211 | — | active | | [vikashjeyaraman/opencouncil-contract-inspector](https://github.com/vikashjeyaraman/opencouncil-contract-inspector) | 151 | — | active | | [xiaodingfeng/contract-review](https://github.com/xiaodingfeng/contract-review) | 131 | — | active | | [fiston-user/contract-analysis-yt](https://github.com/fiston-user/contract-analysis-yt) | 128 | — | dead | | [neo4j-product-examples/graphrag-contract-review](https://github.com/neo4j-product-examples/graphrag-contract-review) | 118 | — | dead | | [qingyun1022/smart_contract_reviewer](https://github.com/qingyun1022/smart_contract_reviewer) | 88 | — | dead | | [Azure-Samples/ally-legal-assistant](https://github.com/Azure-Samples/ally-legal-assistant) | 80 | — | dead | | [crytic/diffusc](https://github.com/crytic/diffusc) | 79 | — | dead | | [Rastaman4e/-1](https://github.com/Rastaman4e/-1) | 73 | — | dead | | [Hexens/Smart-Contract-Review-Public-Reports](https://github.com/Hexens/Smart-Contract-Review-Public-Reports) | 58 | — | active | ## Domain names - `contractreview.com` — taken - `contractreview.io` — available - `contract.com` — taken - `getcontract.com` — taken --- Sources searched: hackernews (30), github (20), githubissues (20), discourse (14), intent (8), stackexchange (2), registries (16), tavily (8), devto (10) Generated by Shows Its Work — https://showsitsworks.com/idea/contract-review-tool Findings link to their sources. Estimates are marked as estimates.