Sponsored X post
A dedicated post to introduce your brand to my audience.
A
Arthur Castro
Open to collaborations
Founder @productarena trained +30k in product and leadership • Host🎙️Papo Na Arena Top 10% most-watched tech podcasts 🇧🇷 • @spaceXAI @replit Ambassador
Companies pay Arthur to write a post about their product on X.
This page is where they book it. Below: Arthur's audience, recent posts and price. Naano, the platform behind this page, handles the brief, your approval of the post and the payment.
€300per post, fixed price
You approve the post before it goes live
A creator yourself? Create your own page
My X audience
- X followers
- 1,359
- Average public views
- 48.2
- Average likes
- 0.2
- Engagement / measured views
- 1.7%
Public X data. Missing metrics remain unknown.
Up to 20 original posts from the last 90 days; replies and reposts excluded. 20 posts have measured views.
Captured Oct 27, 2026
Work with Arthur Castro
Your collaboration, managed on Naano
- Share your brief with the creator
- Review the content before publication
- Manage your collaboration and payment
How does this price compare? B2B creator rates 2026
Audience insights
Sample of 300 public follower profiles. This is not the audience of a specific post.
This follower sample is partial.
- Brasil · 7%
- São Paulo, Brasil · 7%
- São Paulo · 4%
- Brazil · 3%
- San Francisco, CA · 2%
- Rio de Janeiro, Brasil · 2%
- United States · 2%
- Sao Paulo, Brazil · 2%
- London, England · 2%
- Florianópolis, Brazil · 2%
Featured posts
🤯🤯🤯 https://t.co/AfTmGqdaPr
- Views
- 98
- Likes
- 1
- Replies
- 0
- Reposts
- 0
I think I want it Apple has already shown there’s a strong appetite for its $2,000-and-up foldable iPhone Duo. Now it needs to meet that demand. https://t.co/BrXUOfqa0B via @markgurman
- Views
- 207
- Likes
- 1
- Replies
- 0
- Reposts
- 0
Solta o play e ajuda o Papo na Arena a chegar no TOP 30 dos podcasts de tech mais ouvidos do Brasil: https://t.co/DLGRVv5WIW
- Views
- 6
- Likes
- 0
- Replies
- 0
- Reposts
- 0
Como treinar? Se expor. O @aiquis escrevia pra um site de videogame e um blog de esporte em 2009, 2010, só porque gostava. Pega um hobby e escreve sobre ele. E assiste às apresentações da @Apple da era Steve Jobs, que são uma aula de storytelling.
- Views
- 16
- Likes
- 0
- Replies
- 1
- Reposts
- 0
Um exercício que a gente defendeu: escrever o press release antes, no modelo da Amazon. Você olha o lançamento do ponto de vista do usuário e se pergunta por que alguém com 300 apps no celular daria atenção pra sua feature.
- Views
- 22
- Likes
- 0
- Replies
- 1
- Reposts
- 0
About Arthur Castro
Founder @productarena trained +30k in product and leadership • Host🎙️Papo Na Arena Top 10% most-watched tech podcasts 🇧🇷 • @spaceXAI @replit Ambassador
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Booking Arthur Castro: frequently asked questions
Arthur Castro is a B2B X creator based in Brazil with 1,359 followers, posting about AI and Growth / GTM. On Naano, one sponsored X post by Arthur Castro costs €300, a fixed price per post.
- How much does Arthur Castro charge for a sponsored X post?
- One sponsored X post with Arthur Castro costs €300 on Naano. It is a fixed price per post, the amount your brand pays. Compare with the B2B creator rates 2026 report
- How do I book Arthur Castro?
- Create a brand account on Naano, choose an offer on this page and send your brief. The price is held when Arthur Castro accepts and paid when the post URL is submitted. You can turn on draft approval to review the post before it goes live.
- Can Naano run the campaign for me?
- Yes. With Managed Campaigns, the Naano team sets the strategy, casts the creators, writes the briefs, reviews the drafts, pays the creators and reports results per creator and campaign. It is a three-month programme: a management fee from €3,000 per month, plus a creator budget from €6,000 per month. See Managed Campaigns
Want Naano to run the whole campaign?
The Naano team casts the creators, writes the briefs, reviews every draft with you and reports results per creator. You approve the shortlist and every draft.