FEATURES · AGENT-READY
AI agents draft. People send.
The MCP server e-signature tools and a Claude plugin let an assistant find documents, prepare drafts and read results. Sending takes a person, and a draft-only key makes that a rule.
MCP server · Claude plugin
ASSISTANT
Draft the NDA for the new supplier and put it in the queue.
Drafted. It is waiting for a person to look at it.
A person approves the sendWhat an agent can do
Look, prepare and report.
Look
Search documents, list payments and read the state of any document and its audit log.
Prepare
Make a draft from your words, a template and the people involved, check it, and revise it.
Report
Read results, download a finished copy to a folder on your own computer and summarise what is waiting on whom.
The hard rule
Sending needs a person.
The MCP server shows a preview first and acts only on a second, confirmed call. A draft-only key can make drafts but cannot send them at all.
- No tool returns a signing link, a code or the key, and there is no tool to refund a payment.
- A read-only switch removes every tool that changes anything.
Audit trail
Every action is on the record.
What an agent does is recorded like what a person does: which key, which document, and when. Revoke a key and its access ends at once.
- Per-key scopes decide what a key may do.
- The API call log keeps 30 days.
- Keyassistant (draft-only)
- SentNo
In plain words
What an assistant can and cannot do.
- FindSearch documents and read their state and audit log
- DraftMake a draft from words, a template and the people, then check and revise it
- AskPropose a send, a reminder or a void, and show you the preview
- Send aloneNothing is sent without a second, confirmed call
- Reach the keyNo tool returns a signing link, a code or the key
- Move moneyThere is no tool to refund a payment
What the tools do
Read, draft, and never send alone.
| Kind | Examples | Needs a person? |
|---|---|---|
| Read | list_templates, get_document, get_audit_log, search_documents, list_payments | No |
| Prepare | create_document, use_template, check_document, revise_document, draft_document_with_ai | A person reviews the draft |
| Act | send_document, remind, void_document | Yes: a plain-words preview first, then a second call with confirm |
| Money | Refund a payment | Not offered as a tool at all |
Connect it
Add the server to your assistant.
{
"mcpServers": {
"docustay": {
"command": "npx",
"args": ["-y", "@docustay2026/mcp"],
"env": { "DOCUSTAY_API_KEY": "dsk_test_..." }
}
}
}The server runs on your own computer with your own key. Start with a test key. With the read-only variable set, send, remind, void and create-template are not offered at all.
Safe by design
Rules that do not depend on the model behaving.
Preview first
send_document, remind and void_document do nothing the first time. They return a plain-words preview of who would be emailed, and only a second call with confirm acts.
Draft-only keys
A key made draft-only can create drafts and nothing else, whatever the assistant asks.
Scoped keys
Each key carries only the scopes you gave it, and you can revoke it at any time. A key without the scope gets the same plain refusal as any bad key.
A conversation
What it looks like to ask for a send.
You say: send the mutual NDA to Sam. The assistant finds the NDA, asks for a send without confirming, and shows you who would be emailed. You say yes, and only then does it send.
- Nothing is sent until the second call.
- No tool returns a signing link, a code or the key.
- Would emailSam
- TemplateMutual NDA
The Claude plugin
A plugin that carries the know-how.
The Claude Code plugin bundles the server and five skills: sending for signature, text tags, embedded signing, webhooks and agent safety. The skills are plain Markdown files, so any agent that reads skill files can use them.
- For assistants that cannot run a program on your computer, a hosted connector does the same job.
- Everything the plugin does is recorded in the audit log.
Questions
Quick answers.
Which assistants work?
Any assistant that speaks the Model Context Protocol, and a Claude plugin that bundles the server.
Can an agent send a document?
Not on its own. A person approves each send.
How many tools are there?
39 tools in the MCP server, checked 12 October 2026. They cover reading, drafting, checking and acting, and every acting tool asks for a confirmation first.
Can an assistant see signing links?
No. No tool returns a signing link, a code or the key.
Where do I get a key for an assistant?
In the app, under Developers, API keys. Give it only the scopes it needs, and start with a test key.
What about assistants that cannot run a program?
A hosted connector does the same job for them.
Is an assistant's work on the record?
Yes. What an assistant does through a key is recorded like what a person does: which key, which document and when, in the same audit log your team reads. Revoke the key and its access ends at once.