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How to connect Vaquill with ChatGPT

Connect ChatGPT to Vaquill MCP. Search us statutes on a legal question, resolve citations for a court filing, and more using natural language, with authentication handled for you.

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Vaquill is an API for US statutes, legal research, citation resolution, and legal monitoring. It helps developers access structured legal data and automate research workflows.

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How to connect Vaquill MCP with ChatGPT

ChatGPT can take action across your apps and files, stay with a project for hours, and turn a goal into finished materials like sheets, slides, and docs, not just answers.

In this guide, I will explain the easiest and most secure way to connect your Vaquill account to ChatGPT via Composio Connect, so it can search US statutes, research legal topics, resolve citations, check credits, and monitor board changes through natural language commands without ever putting your account credentials at risk.

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Why use Composio over default connectors?

  • Apps with read and write access. Default connectors mostly can read your data. Composio's Vaquill integration lets ChatGPT take actions like creating drafts, sending updates, labeling records, and more.
  • 1,500+ SaaS toolkits out of the box. Composio gives you instant access to a vast catalog of pre-built connectors, from Gmail and Slack to Notion, Linear, and Salesforce.
  • One MCP server for every app. Connect any of your applications on demand through a single endpoint, rather than juggling a separate server for each app.
  • Smart, context-aware tool loading. Unlike traditional MCP servers that dump every available tool into the LLM context window, Composio searches for and loads only the tools relevant to the task at hand.
  • Cross-app automation. Chain actions across multiple apps in a single run - fetch a thread, summarize it in Notion, and post highlights to Slack without leaving the conversation.

Prerequisites

Note: Composio connects through OAuth. You will be asked to sign in and approve specific permissions. Review the permission screen carefully if you are using a work account.

Step-by-step: Connect Vaquill to ChatGPT

1. Install the Composio plugin

Click the button. ChatGPT opens the Composio plugin page. Click Install plugin.

Install in ChatGPT

Composio plugin page in ChatGPT with the Install plugin button

You can also find it inside ChatGPT: go to Settings, open Plugins, search the marketplace for Composio, and click Install plugin.

2. Authenticate

After you install, ChatGPT asks you to authenticate with Composio. Log in and click Allow access to authorize ChatGPT to use your Composio account.

Composio login and Allow access screen for ChatGPT

3. Start using Composio

That is it. Composio tools are now available in ChatGPT. Type @Composio followed by your request, for example @Composio find unread Vaquill messages and summarize them, and it will run the actions you authorize. On first use it asks you to authorize Vaquill.

Option 2: Add Composio as an MCP server

If you cannot use the plugin marketplace, add Composio as a custom MCP server instead.

1. Open the MCP settings

In ChatGPT, go to Settings and open the Plugins section. Inside the Plugins page, click the MCP tab.

ChatGPT settings showing the Plugins page with the MCP tab selected

2. Add the server

Click Add server. In the Name field enter Composio, for Type select Streamable HTTP, and in the URL field paste the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
ChatGPT Add server dialog with the name Composio, type Streamable HTTP, and the Composio MCP URL

Then click Save. The Composio server now appears in your MCP plugins list.

ChatGPT Plugins page showing the Composio MCP server added to the list

3. Authenticate

Click Authenticate on the Composio entry, log in via Composio, and click Allow access. Composio tools are then available in ChatGPT the same way as with the plugin.

What you can do after connecting Vaquill

  • Search US statutes on a legal question
  • Resolve citations for a court filing
  • Check Vaquill credits and board-change watches

Security + privacy notes (important)

  • Use least-privilege access: Only grant permissions you actually need.
  • Review OAuth permissions before approving: Make sure requested scopes match what you expect Composio and ChatGPT to do.
  • Keep write actions human-reviewed: For actions like sending messages, creating labels, or editing drafts, keep manual confirmation enabled.
  • Be careful with sensitive data: Avoid using this setup with highly sensitive information unless allowed by your personal, company, or client policies.
TOOLS

Supported Tools

Every Vaquill action and event your agent gets out of the box.

Browse Statute Divisions

Browse one level of a statutory hierarchy at a time.

Compare Statute Cross State

Find the top analogous statutory provisions in other states for one state statute section.

Count Statute Sections

Count exact sections in a legal corpus scope before enumeration.

Create Board Watch

Create an active email, webhook, or dual-channel watch that immediately begins monitoring a legal corpus source and may send future external email or webhook notifications until paused or deleted.

Delete Board Watch

Permanently delete a board watch and all of its delivery history.

Get Adjacent Statute Sections

Get the immediately adjacent sections before and after a statute section in statutory order.

Get API Credit Pricing

Get Vaquill's live credit conversion, purchase bounds, and per-operation prices without authentication or credit consumption.

Get Board Watch Change Diff

Get complete old and new section text for one exact observed watch change.

Get Credit Balance

Get the connected Vaquill account's spendable credits, USD balance, expiries, plan, lifetime usage, and applied request limits.

Get Session Law

Get complete metadata for one US state session law by provider ID or citation.

Get Session Law Body

Get one page of a US state session law's text, with character offsets, text hash, and amendatory-markup metadata.

Get Session Laws Batch

Get up to 50 distinct US state session laws by provider ID or citation.

Get Statute Body

Get full statute text in a selected format, optionally with a subsection tree or point-in-time reconstruction.

Get Statute Cited By

Find the top USC and CFR sections that cite a statute section.

Get Statute Definitions

Get chapter definitions governing a statute section.

Get Statute Enactments

Get state session laws whose publisher affected-sections tables print this exact code section.

Get Statutes Coverage

Return Vaquill's authoritative live jurisdiction and corpus coverage matrix before choosing statute search filters.

Get Statute Section

Get metadata and source links for one US statute section by canonical section ID or resolvable citation.

Get Statute Sections Batch

Get metadata for up to 50 statute sections in input order, with optional full text.

List Board Watch Changes

List sections observed as added, amended, or removed on a watched source.

List Board Watch Deliveries

List the newest persisted webhook delivery attempts and current delivery health for a board watch.

List Board Watches

List board watches owned by the connected Vaquill API-key account, including delivery destination, active state, and latest health metadata.

List Session Law Changes

List one oldest-first page of changes to Vaquill's state session-law registry for incremental synchronization.

List Session Laws

List one page of a state's session laws with session, date, text-availability, and instrument filters.

List Statute Changes

List capture-bounded observed change history for a statute section.

List Watchable Boards

List corpus sources that can be watched, including freshness, polling cadence, retrieval health, and supported scope filters.

Resolve Statute Citation

Resolve one Bluebook citation to an exact statute section.

Resolve Statute Citations Batch

Resolve up to 50 unique Bluebook citations in one call from a raw list of up to 500 entries.

Search US Statutes

Search US statutes and regulations, constitutions and court rules, executive actions and Federal Register materials, agency guidance and adjudications, sentencing guidelines, tax treaties, and session laws with semantic and keyword matching.

Test Board Watch

Send one synthetic delivery through a board watch's configured channel immediately.

Update Board Watch

Partially update a Vaquill board watch without changing its delivery channel.

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FAQ

Frequently asked questions

With a standalone Vaquill MCP server, the agents and LLMs can only access a fixed set of Vaquill tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Vaquill and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. ChatGPT fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Vaquill tools.

Yes, absolutely. You can configure which Vaquill scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Vaquill data and credentials are handled as safely as possible.

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