Integration
Connect Watermelon to Signatureapi
When New Contact fires in Watermelon, your agent runs Add ceremony in Signatureapi. Describe the whole flow and it is built, tested on every scenario and kept running.
What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it.
Build solutions, not workarounds.
What do you want Watermelon and Signatureapi to do together?
Ask the assistant
Connect your AI client
Give your AI client this address.
https://mcp.apiant.aiOne connection does both: ask your client to act in an app once, or have it build an automation that keeps running. Any client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser.
Set it up in your client
Claude Code
Run this in the directory you want to work in.
claude mcp add --transport http -s project apiant-ai https://mcp.apiant.aiStart Claude Code there, approve the server, and sign in in the browser page it opens.
Claude Code guide (opens in a new tab)Claude, web and desktop
Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first.
Setup guide (opens in a new tab)Cursor
Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser.
Setup guide (opens in a new tab)Zed
Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server.
Setup guide (opens in a new tab)Codex and the ChatGPT desktop app
Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in.
Setup guide (opens in a new tab)Grok
Open grok.com/connectors, choose New Connector, then Custom, and paste the address. Grok signs you in in your browser.
Setup guide (opens in a new tab)Any other MCP client
Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection.
Setup guide (opens in a new tab)Example flows
What Watermelon can start in Signatureapi
When New Contact in Watermelon
then Add ceremony in Signatureapi
Starting points drawn from the triggers and actions in the catalog today. Describe the flow you need, at any depth, and your agent builds it and tests every scenario before it ships.
Everything your agent can do with Watermelon and Signatureapi
Triggers and actions 6 triggers · 23 actions
- Archive Conversation
Triggers when a Watermelon conversation is archived.
- Handover Conversation Agent
Triggers when a Watermelon conversation is handed over to a human agent (its assigned agent changes).
- Handover Conversation Team
Triggers when a Watermelon conversation is handed over to a team (its assigned team changes).
- New Contact
Triggers when a new contact is added in Watermelon.
- New Conversation
Triggers when a new conversation starts in Watermelon.
- Updated Contact
Triggers when a Watermelon contact is created or updated.
- Add Contact
Creates a new contact in Watermelon and returns its ID.
- Find Contact
Returns a Watermelon contact by its ID.
- Find Conversation
Returns a Watermelon conversation by its ID.
- Get conversation
Returns a single conversation by its ID, including its messages, tags, channel and status.
- Get message
Returns a single message by its ID, including its text, type, conversation and read status.
- Search Contacts
Searches Watermelon contacts for a value such as a name, email or phone number and returns the matches.
- Sends a Message
Sends a message in a Watermelon conversation, or starts a new conversation when no conversation ID is given, and returns the message ID.
- Updates an Existing Contact
Updates an existing Watermelon contact's name, email or phone number.
- Add ceremony
Creates a new signing ceremony for a recipient. Any previous active ceremony for that recipient is revoked. Returns the ceremony, including its URL when the recipient is authenticated by email code or by your own application.
- Add deliverable
Creates an additional deliverable (signed PDF package) from a completed envelope. The envelope must be completed.
- Add envelope
Creates an envelope with documents and recipients and starts the signing process.
- Add upload
Uploads a PDF, DOCX or PNG file to SignatureAPI and returns a URL you can use as a document source when creating an envelope. Uploads expire after 24 hours.
- Cancel envelope
Cancel an in-progress envelope so remaining recipients can no longer sign.
- Delete envelope
Delete an envelope.
- Get deliverable
Retrieves a deliverable by its ID, including its status and, once generated, a download link for the signed PDF.
- Get envelope
Retrieve a single envelope by id.
- Get recipient
Retrieves a recipient's details, including status, ceremony information and completion timestamp.
- Get upload
Fetches an uploaded file's record by ID: its format, size, hash and expiry. An error occurs if the upload is not found.
- List deliverables
Returns the deliverables (signed PDFs with audit log) of an envelope, earliest first.
- List envelopes
Lists envelopes in the account, most recent first, optionally filtered by status or topic.
- Resend request
Resends the signing request to a recipient who has not yet completed their ceremony, e.g. as a reminder or after a lost or soft-bounced email.
- Update envelope
Update mutable fields (e.g. title, metadata) of an existing envelope.
- Update recipient
Replaces a recipient who has not yet completed with a new person. The original recipient is marked replaced and a new recipient is created with the same type, key, routing position and places.
No trigger or action matches that. Ask your agent to add it: it reads the API documentation and builds what you describe.
Each app on its own
Reviews
What our customers say
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Questions
Watermelon and Signatureapi, answered
What can start an automation from Watermelon?
Any of Watermelon's 6 triggers in the catalog, including New Contact, New Conversation, Updated Contact and Handover Conversation Agent. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Signatureapi when something happens in Watermelon?
Any of Signatureapi's 15 actions, including Update envelope, Update recipient, Add ceremony and Add deliverable. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Signatureapi to Watermelon?
Signatureapi has no triggers in the catalog today, so automations start in Watermelon. If you need the other direction, ask: your agent reads Signatureapi's API documentation and adds it.
Do I have to build a connector for Watermelon or Signatureapi?
No. Both are in the catalog with their triggers and actions. You describe the automation; your agent builds it, tests every scenario and keeps it running.
Can my AI client use Watermelon and Signatureapi without building an automation?
Yes. With your AI client connected to APIANT, ask it to do something in either app once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running. One connection covers both.
What happens when something fails?
Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships.
Is there a free plan?
Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.