Integration · CRM & sales

Connect Claude & ChatGPT to SigParser

Ask your AI who you know at a company, and it searches the contacts SigParser has captured from email signatures. It can show which people and companies a contact or domain emails with, list processed emails and calendar meetings, and read an email's body. It can also parse an email you paste in for contacts and create or update a contact.

Connect SigParser free

Free plan, no credit card. Takes about a minute.

Try asking

“Who do we know at acme.com?”
The AI searches contacts by domain and lists the people found in email signatures, with their details.
“Who at our company talks most with nordicfoods.dk?”
It reads the contact relationships for that domain over the date range you give.
“Which companies has Lars been emailing this year?”
It reads the company relationships for Lars's email address from January until today.

What your AI can do

Contacts and companies

Search contacts captured from email by address, domain, status or tag, list companies and create or update contacts.

Relationships

See which people and companies a contact or domain interacts with over email, for any date range.

Emails and meetings

List processed emails and calendar meetings, read an email body and parse an email for signature details.

“What meetings did we have with Acme last quarter?”
It lists calendar meetings filtered by the Acme domain and date range.
“Pull the contact details out of this email signature.”
It parses the email you paste in and returns the contacts and signature details it finds.
“Add Emma Berg, Head of Sales at Acme, with her phone number.”
It creates the contact with name, title, email and phone number, or updates the existing one.

28 tools for SigParser

These tools are switched on when you connect. You can switch any of them off, or require your approval before it runs.

create_connector_contactChanges dataCreate a new connector. API summary: This will create a new Contact in the CRM. This will not update an existing contact if it already exists.
create_contactChanges dataCreate or update a contact with name, title, email address, phone numbers, address, website, social profile URLs and custom fields.
create_feedbackChanges dataCreate a new feedback. API summary: Report parsing feedback.
create_json_postVisible to othersCreate a new json. Has effects visible outside this system. API summary: Split email JSON (stateless).
create_mimeVisible to othersCreate a new mime. Has effects visible outside this system. API summary: Email signature parser MIME/EML (stateless).
create_mime_postVisible to othersCreate a new mime. Has effects visible outside this system. API summary: Split email EML/MIME (stateless).
create_msgVisible to othersCreate a new msg. Has effects visible outside this system. API summary: Email signature parser for MSG (stateless).
create_msg_postVisible to othersCreate a new msg. Has effects visible outside this system. API summary: Split email MSG (stateless).
create_webhookDeletesCreate a new webhook. Destructive action; may require approval. API summary: Create a new webhook. See the "action" parameter for the types (contacts, companies, meetings, emails...) of webhooks.
delete_usersMoves moneyPermanently delete a user. Financial or irreversible action; may require approval. API summary: Revoke the data access API key for this request. Doesn't revoke the email parsing API key.
delete_webhooksMoves moneyPermanently delete a webhook. Financial or irreversible action; may require approval. API summary: Delete the webhook.
get_company_relationshipsChanges dataShow which companies a contact or domain interacts with over email (`contact_email`, `contact_id` or `contact_domain`), with optional date range, grouping and paging.
get_contact_relationshipsChanges dataShow who a contact or domain interacts with over email (`contact_email` or `contact_domain`), with optional `start_date`, `end_date`, grouping and paging.
get_current_userGet the SigParser user and account this connection belongs to.
get_email_bodyGet the body of one processed email message by `id`.
list_api_catalogsList api catalogs. API summary: RFC 9727 API catalog (Linkset, application/linkset+json): a top-level index tying together the OpenAPI/Swagger definition and the MCP discov….
list_companiesList companies found in email, optionally filtered by `domain` or `lastmodified_after`, with `take` for page size.
list_contactsList contacts. API summary: List all the webhooks for the current team.
list_emailsList email messages SigParser has processed, filtered by `emailaddress`, `domain` or `ingested_after`, with `page` and `take`.
list_mcpsList mcps.
list_mcps_getList mcps. API summary: SEP-1960: lightweight manifest of the server's endpoint(s) and authentication, so a client learns where to connect and how to authenticate b….
list_meetingsList calendar meetings SigParser has processed, filtered by `emailaddress`, `domain`, date range (`date_min`, `date_max`) or `lastmodified_after`, with `page` and `take`.
list_oauth_protected_resourcesList oauth protected resources.
list_openai_apps_challengesList openai apps challenges.
list_server_card_jsonsList server card jsons. API summary: SEP-1649: rich server card. Includes the full tool list (names, descriptions, annotations, and input schemas) pulled straight from the regis….
list_webhooksList webhooks. Optional filters: id. API summary: Get a webhook by ID.
parse_email_for_contactsVisible to othersParse one email you pass in (from, to, cc, subject, date and HTML or plain body) and return the contacts and signature details found in it.
search_contactsChanges dataFind contacts captured from email signatures, filtered by `emailaddress`, `domain`, `statuses`, `tagid` or `lastmodified_after`, with `page`, `take` and sorting. Use it to look up a person or everyone at a company domain.

Set up in three steps

1
Pick the app
Create a free HeyMyApps account and choose SigParser from the app list.
2
Paste your key
Paste a SigParser API key. Generate the key in the SigParser app. Your SigParser subscription and role must allow API keys.
3
Add the link to your AI
You get a personal MCP link. Add it to Claude, ChatGPT or Cursor:
1. Click your name, then Settings › Connectors › Add custom connector.
2. Paste your link as the Remote MCP server URL.
3. Switch it on from the + menu in a chat.

Questions

What can the AI do in SigParser?

The AI can search contacts, list companies, emails and meetings, read an email body, and show contact and company relationships. It can also create or update a contact and parse an email you pass in for contacts and signature details.

Does the AI see my SigParser API key?

No. Your SigParser API key is encrypted at rest and never shown to the AI. After you save it, it is not shown again, not even to you. The AI only sees the results of the tools it calls.

Can I control what the AI is allowed to do?

Yes. You choose which tools are switched on, so you can start with searching contacts and companies only. Creating or updating contacts can require your approval before it runs. Every tool call is logged.

Does it work with ChatGPT?

Yes. In ChatGPT go to Settings › Apps & Connectors › Advanced and turn on Developer mode, then add your HeyMyApps link. Developer mode needs a paid ChatGPT plan: Plus, Pro, Business or Enterprise. The same link also works in Claude (Settings › Connectors › Add custom connector), Cursor and other MCP clients.

What does it cost?

HeyMyApps has a free plan with no credit card required. Paid plans bill per completed task. You also need your own SigParser account.

Where do I get a SigParser API key?

You generate it in the SigParser app. Your SigParser subscription and your role must allow API keys. If you cannot create one, ask the admin of your SigParser account.