Integration
Connect PostStack to Factur-X by InvoiceXML
When something happens in PostStack, your agent does the next thing in Factur-X by InvoiceXML. Describe it 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 PostStack and Factur-X by InvoiceXML to do together?
Ask the assistant
Connect your AI client
Give your AI client this address.
https://mcp.apiant.aiAny 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)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 PostStack can start in Factur-X by InvoiceXML
When Contact Updated (instant) in PostStack
then Create Factur-X Invoice in Factur-X by InvoiceXML
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 PostStack and Factur-X by InvoiceXML
Triggers and actions 7 triggers · 41 actions
- Contact Deleted (instant)
Fires when a contact is deleted (event: contact.deleted).
- Contact Updated (instant)
Fires when a contact is updated (event: contact.updated).
- Email Bounced (instant)
Fires when an email bounces (event: email.bounced).
- Email Delivered (instant)
Fires when an email is delivered (event: email.delivered).
- New Contact (instant)
Fires when a contact is created (event: contact.created).
- New Inbound Email
Polls for newly received inbound emails.
- New Sent Email (instant)
Fires when an email is sent (event: email.sent).
- Add a broadcast
Create a new marketing broadcast.
- Add a contact
Create a new contact.
- Add a segment
Create a new manual contact segment.
- Add a template
Create a new email template.
- Add contacts to segment
Add contacts to an existing segment.
- Add suppression
Add an address to the suppression list.
- Cancel broadcast
Cancel an in-flight broadcast.
- Cancel email
Cancel a scheduled or queued email before it sends.
- Delete a contact
Delete a contact.
- Delete a template
Delete an email template.
- Get a contact
Fetch one contact by ID.
- Get a template
Fetch one email template by ID.
- Get broadcast
Retrieve one broadcast by its public id, including the HTML and text bodies that the list endpoint omits.
- Get email
Fetch one sent or queued email by ID.
- Get email events
Get the delivery event timeline for one email.
- Get inbound email
Fetch one received inbound email by ID.
- Import contacts
Bulk-import a CSV list of contacts.
- List broadcasts
List marketing broadcasts.
- List contacts
List contacts in the account.
- List emails
List sent, queued, and scheduled emails.
- List inbound emails
List emails received via inbound parsing.
- List segments
List contact segments.
- List suppressed addresses
List addresses on the suppression list.
- List templates
List email templates.
- Send an email
Send a transactional email through PostStack.
- Send broadcast
Start sending a broadcast to its recipients.
- Send emails in batch
Send up to 100 emails in a single request.
- Update a contact
Update an existing contact's fields.
- Update a template
Update an email template, creating a new version.
- Update email
Reschedule a queued email's send time.
- Validate email address
Check whether an email address is valid and deliverable.
- Convert CII XML to Factur-X
Converts a CII XML invoice into a Factur-X compliant PDF/A-3 with the XML embedded. The API generates a visual PDF rendering of the invoice and packages it with the source CII XML.
- Convert Factur-X PDF to CII
Extracts the embedded CII (UN/CEFACT Cross Industry Invoice) XML from a Factur-X PDF and returns it as a standalone XML file.
- Convert Factur-X PDF to UBL
Extracts the embedded CII XML from a Factur-X PDF and converts it to UBL (Universal Business Language) XML.
- Convert UBL XML to Factur-X
Converts a UBL XML invoice into a Factur-X compliant PDF/A-3. The API maps UBL to CII, generates a visual PDF rendering, and embeds the CII XML in the PDF/A-3 container.
- Create Factur-X Invoice
Builds a Factur-X invoice from structured header, party, payment, and line-item data, then returns a ready-to-deliver PDF/A-3b file.
- Embed XML Into PDF (Factur-X)
Takes a PDF and a CII XML and produces a Factur-X compliant PDF/A-3 with the XML attached as factur-x.xml. Use this when you already have both the visual PDF and the structured XML of an invoice and just need the hybrid wrapper.
- Extract Invoice JSON
Pulls invoice fields from a PDF into structured JSON, preferring embedded Factur-X XML when present and falling back to intelligent extraction when not.
- Extract Invoice XML
Retrieves machine-readable invoice XML from a PDF, returning embedded Factur-X XML directly or generating compliant XML when none is embedded.
- Render CII as PDF
Renders a CII (UN/CEFACT Cross Industry Invoice) XML document into a human-readable PDF. The output is a visual PDF, not a Factur-X hybrid file.
- Validate Factur-X Invoice
Checks whether a Factur-X invoice is structurally and semantically valid, including schema status, conformance level, and rule-level issues.
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
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Questions
PostStack and Factur-X by InvoiceXML, answered
What can start an automation from PostStack?
Any of PostStack's 7 triggers in the catalog, including Contact Updated (instant), New Contact (instant), New Inbound Email and New Sent Email (instant). Describe the moment in plain language and your agent picks the right one.
What can your agent do in Factur-X by InvoiceXML when something happens in PostStack?
Any of Factur-X by InvoiceXML's 10 actions, including Create Factur-X Invoice, Convert CII XML to Factur-X, Convert Factur-X PDF to CII and Convert Factur-X PDF to UBL. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Factur-X by InvoiceXML to PostStack?
Factur-X by InvoiceXML has no triggers in the catalog today, so automations start in PostStack. If you need the other direction, ask: your agent reads Factur-X by InvoiceXML's API documentation and adds it.
Do I have to build a connector for PostStack or Factur-X by InvoiceXML?
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.
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.