DecisionLayer
Bring a case to arbitration with DecisionLayer from a conversation in ChatGPT, Codex or Claude Code.
- File a full case under a contract that has an arbitration clause.
- File a consent case, where you invite the other party to agree to arbitrate.
- Simulate a case first: give both sides of a dispute and get a written award back in a few minutes, with nothing filed and nobody contacted.
Install
Claude Code:
claude plugin marketplace add DecisionScienceResearch/dl-api-plugin
claude plugin install decisionlayer@decisionlayer
Codex:
codex plugin marketplace add DecisionScienceResearch/dl-api-plugin
then open the plugin list and install DecisionLayer. In a new conversation, say:
Simulate an arbitration case with DecisionLayer using the sample dispute.
Sign-in, and what happens to your data
The plugin points your client at DecisionLayer's hosted MCP server, https://www.decisionlayer.ai/mcp, and runs no code on your computer. The first time it is used, a browser window opens on decisionlayer.ai: sign in or create an account, review what the app will be able to do, and click Allow. There is no key to copy and nothing to configure.
Whatever you give the assistant for a filing or a simulation, such as the contract, the arguments, the parties' names and any documents, is first processed by the application you are using (ChatGPT, Codex or Claude) under that application's own privacy terms, which the plugin does not control. The plugin sends DecisionLayer only what the assistant passes to its tools, and DecisionLayer handles that under its privacy policy. A case filed here is owned by your account and appears on your dashboard, exactly like one filed on the website. A simulation's award is published at a public link for 30 days, so use made-up names when privacy matters. To disconnect, open Settings › API keys › Connected apps on decisionlayer.ai.
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What is in the plugin
Eight tools from the hosted server: get_account, get_profile, file_case, file_consent_case, get_case, run_simulation, get_simulation and send_feedback. Filing a case and running a simulation are marked destructive, so the assistant asks you before it runs them, and every filing carries an idempotency key so a retry never files twice.
Three skills guide the conversation: file-arbitration-case, file-consent-case and simulate-arbitration-case, which ships with a made-up sample dispute so you can try it without preparing anything.
Filing a full case is limited to approved accounts; consent cases and simulations are open to every account. To request filing access, email casemanager@decisionlayer.ai. Signing, payment and identity verification happen on the DecisionLayer website at the link a tool returns. Nothing the assistant says is legal advice.
A developer alternative that runs the same eight tools on your own machine with a DecisionLayer API key instead of a sign-in lives in the repository, outside this plugin folder; see the repository README.