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What do you want crates.io and Resend to do together?
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Claude Code
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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 crates.io can start in Resend
When New crate in crates.io
then Add Contact to Segment in Resend
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 crates.io and Resend
Triggers and actions 2 triggers · 36 actions
- New crate
Fires when a new crate is registered on crates.io.
- New crate version
Fires when any crate publishes a new version.
- Find crates by category
Search crates.io within a given category slug.
- Find crates by name
Search crates.io for crates matching a query string.
- Get crate
Get metadata for a single crate by name.
- Get crate downloads
Get download counts (daily history + totals) for a crate.
- Get crate version
Get metadata for one specific version of a crate.
- Get crate version readme
Get the rendered README HTML for a specific crate version.
- List categories
List all crates.io categories with descriptions and crate counts.
- List crate versions
List all published versions of a crate.
- Add Contact to Segment
Adds a contact to a Resend segment. You can identify the contact by its ID or email address.
- Add Suppression
Adds an email address to your Resend suppression list so no further mail is sent to it.
- Cancel Email
Cancels a scheduled Resend email that has not been sent yet.
- Create API Key
Creates a new Resend API key. The key itself is returned once, so store it right away.
- Create Contact
Creates a contact in Resend. Returns the new contact's ID.
- Create Domain
Adds a sending domain to Resend. Returns the DNS records you need to add at your domain host to verify it.
- Create Segment
Creates a new segment in Resend for grouping contacts.
- Delete API Key
Deletes a Resend API key so it can no longer be used.
- Delete Contact
Deletes a contact from Resend. You can identify the contact by its ID or email address.
- Delete Domain
Removes a sending domain from Resend.
- Delete Segment
Deletes a segment from Resend. The contacts themselves are not deleted.
- List API Keys
Returns the API keys on your Resend account, with each key's name and when it was last used. The key values themselves are never returned.
- List Contacts
Returns the contacts in your Resend account, optionally limited to one segment.
- List Domains
Returns the sending domains on your Resend account and each one's verification status.
- List Segments
Returns the contact segments in your Resend account.
- List Sent Emails
Returns the emails you have sent through Resend, newest first, with each email's id, sender, recipients, subject, send time and latest delivery event. Supports paging before or after a given email id.
- List Suppressions
Returns the email addresses on your Resend suppression list, showing for each one the address, why it was suppressed (bounce, complaint or added manually), the email that triggered it and when it was added.
- Remove Contact From Segment
Removes a contact from one of your Resend segments. Identify the contact by its ID or by its email address, and name the segment to take it out of. The contact itself is not deleted.
- Remove Suppression
Takes an email address off your Resend suppression list so you can send to it again. Identify it by the suppression ID or by the email address itself.
- Retrieve Contact
Returns one contact from your Resend audience, including their name, email address, whether they have unsubscribed, when they were added, and any custom properties stored on them. Look the contact up by its ID or by its email address.
- Retrieve Domain
Returns one of your Resend sending domains, including its name, verification status, sending region, tracking settings and the DNS records it needs with each record's current status.
- Retrieve Segment
Returns one of your Resend segments by its ID, with the segment's name and when it was created.
- Retrieve Sent Email
Returns one email you sent through Resend, with its sender, recipients, subject, HTML and text body, tags, send time and latest delivery event.
- Send Batch Emails
Sends up to 100 emails through Resend in a single call. Give it a list of emails, each with a sender, recipients, subject and body, and it returns the id of every email it created.
- Send Email
Sends an email through Resend. Set the sender, recipients and subject, provide an HTML or plain text body, and optionally add CC/BCC, reply-to, attachments, tags or a send time.
- Update Contact
Updates a contact in your Resend audience. Identify the contact by ID or email address, then change the name, the subscribed/unsubscribed state, or the custom properties. Anything you leave blank stays as it is.
- Update Email
Reschedules an email you already queued in Resend, moving it to a new send date and time. Only emails that have not gone out yet can be changed.
- Verify Domain
Asks Resend to re-check the DNS records for one of your sending domains and start verifying it. Verification runs in the background, so the domain shows as pending until it finishes.
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
crates.io and Resend, answered
What can start an automation from crates.io?
Any of crates.io's 2 triggers in the catalog, including New crate and New crate version. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Resend when something happens in crates.io?
Any of Resend's 28 actions, including Create API Key, Create Contact, Create Domain and Create Segment. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Resend to crates.io?
Resend has no triggers in the catalog today, so automations start in crates.io. If you need the other direction, ask: your agent reads Resend's API documentation and adds it.
Do I have to build a connector for crates.io or Resend?
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.