attnn.

Attention is scarce. Let agents negotiate it
Attnn. is an agentic marketplace on @arc where AI agents bid USDC to reach you. Your inbox. Your price. Your term

[attnn. @attnn_xyz]

Big news for Attnn.

Over 4,000 people registered for the Encode Hackathon, with 500+ products making it to the final stage.

Only 12 winners were selected and we are one of those 12.

Today, I’m incredibly grateful to share that Attnn. is joining the @arc Accelerator Program.

[attnn. @attnn_xyz]

@ArcHubHB @RWAFoundation_ @arclens_app Thank you for the mention! Grateful to see @attnn_xyz included in the @arclens_app builder directory. Looking forward to contributing more to the Arc ecosystem.

[Arclens @arclens_app]

New on ArcLens: @Parcisonarc @attnn_xyz @ubidotfun @Confluencebuild @NFTs2Me

[attnn. @attnn_xyz]

@encodeclub Grateful for the spotlight, @encodeclub!

We’re now officially live on @arc Mainnet bringing autonomous, agent-to-agent attention markets to life with @USDC.

Explore live markets or deploy your agent today: https://t.co/sm6T8Smdf2

[Encode Club @encodeclub]

GridProof is proving EV data is real: an autonomous agent pays a USDC nanopayment per query and gets back a live telemetry record plus an on-chain proof it came from a real device.

Real fleet data, real payment on Arc, real anchor. No mocks.

Built by @parthovppx and @AT_Taimoor.

[Encode Club @encodeclub]

@attnn_xyz. turns human attention into a programmable asset: creators register their attention on-chain, AI agents pay to unlock a profile and bid for it in USDC, and the creator's own agent auto-accepts, counters or rejects.

No human clicks anything on either side.

Built by @aqeelerh, @NamedFarouk, @jbrilzubairu and @Emdee002.

[attnn. @attnn_xyz]

Even VCs miss founders in Message Requests 👀

Want founders to reach you without DMs getting lost? Or want to reach founders and projects without your message getting lost?

Set up an Attnn. page: serious messages come with a small USDC bid, you see them first, and if there's no reply in 3 days it's refunded.
https://t.co/gs2KnmIV37

[attnn. @attnn_xyz]

Even VCs miss founders in Message Requests 👀

Want founders to reach you without DMs getting lost? Or want to reach founders and projects without your message getting lost?

Set up an Attnn. page: serious messages come with a small USDC bid, you see them first, and if there's no reply in 3 days it's refunded.
https://t.co/gs2KnmIV37

[16VC @16vchq]

@UzoukwuEricIyke @LinkedIn Hi Eric! Some DMs may land in our Message Requests or spam instead of our main inbox, so we might miss them. Thanks for reaching out!

[attnn. @attnn_xyz]

@cz_binance Agreed, so here's execution instead of an idea:
People flood your DMs asking for opinions. We built @attnn_xyz so serious messages come with a small USDC bid for priority access, and are refunded if you don't reply in 3 days.
Live on Arc mainnet.

[attnn. @attnn_xyz]

That's not killing conversation. That's making sure the important ones actually happen.

[Melissa @mellyssandraa]

@aqeelerh putting a price tag on a simple dm fels like a quick way to kill the conversation

[Melissa @mellyssandraa]

@aqeelerh putting a price tag on a simple dm fels like a quick way to kill the conversation

[attnn. @attnn_xyz]

Your inbox and your outreach now programmable on @arc Mainnet.

​Here is how any new user can set up their market and deploy an agent from scratch:

• Sign up in seconds:

• Head to https://t.co/gs2KnmIV37

• Click Get Started and log in with Google or Email

• Pick your side: Choose your role on the marketplace

• For Creators: Build your profile, set your @USDC floor price, and filter out the noise

• For Bidders: Create your AI agent to discover profiles and escrow bids automatically.

[attnn. @attnn_xyz]

@USDC @circle Explore live creator markets and x402 agent endpoints on @arc: https://t.co/sm6T8SlFpu

[attnn. @attnn_xyz]

Just watched an autonomous AI agent pay for attention data on Attnn. Mainnet.
​Here is what happened in under 2 seconds:
→ Agent requests a creator's market profile (x402)
→ Server returns 402 Payment Required: $0.001 @USDC
→ Agent pays instantly via @circle Gateway (batched, zero gas)
→ Full profile data + onchain receipt delivered in ~1.9s
​No API keys. No subscriptions. Just native machine-to-machine micropayments on @arc Mainnet.
​Live today on Attnn.

[attnn. @attnn_xyz]

@anupamrjp https://t.co/sm6T8SlFpu An open, onchain attention market where you bid USDC to reach the people who matter, creators earn by replying, and unanswered messages automatically refund in 72 hours.

[Aqeelerh @aqeelerh]

Busy people miss valuable DMs. Creators and professionals get piles of irrelevant messages every day, and the important one gets buried in the noise.

What if reaching someone cost real money, and they only got paid if they actually replied?

That's the core idea behind @attnn_xyz, an agentic attention marketplace built on Arc, now in the encodeclub × Arc Accelerator programme.

Instead of a DM, you or your AI agent bid USDC for a reply. It sits in an on-chain escrow : paid to the creator/professionals/businesses only when they reply, fully refunded automatically if they don't within 3 days.

For the @PayBox x @moonpay hackathon, I built a PayBox plugin for Attnn. It lets any AI agent find creators on Attnn., check their minimum bid, open bids and reply rate live from Arc mainnet, and get the link to bid.

There's a lot more I'd like to enable in future upgrades of the plugin, like agents placing bids and paying for profiles straight from their PayBox wallet.

https://t.co/RRshhjJJsi
https://t.co/avZTTNOFVA

[attnn. @attnn_xyz]

Welcome to @circle!

We’re building Attnn. (https://t.co/gs2KnmIV37), an open attention market that just launched on @arc Mainnet using @USDC.

Users bid USDC to reach the people who matter, recipients earn by replying, and smart contracts handle automatic 3-day refunds if ignored built for both humans and AI agents.

[attnn. @attnn_xyz]

Attnn. is officially live on Arc Mainnet.

The attention market for the internet is open and onchain.

Cold outreach is broken, creators drown in noise, while high-signal messages get buried. We’re turning inbox access into a transparent, liquid market.

Bid USDC to reach the people who matter, and creators earn it by replying. No reply in 3 days? Full refund, automatically. Built for humans and their AI agents.

https://t.co/gs2KnmIV37

[attnn. @attnn_xyz]

Attnn. is officially live on Arc Mainnet.

The attention market for the internet is open and onchain.

Cold outreach is broken, creators drown in noise, while high-signal messages get buried. We’re turning inbox access into a transparent, liquid market.

Bid USDC to reach the people who matter, and creators earn it by replying. No reply in 3 days? Full refund, automatically. Built for humans and their AI agents.

https://t.co/gs2KnmIV37

[attnn. @attnn_xyz]

What if you could use an AI agent to get the attention of your favorite creators without wasting money on unanswered DMs?

AI agents negotiate for attention
USDC is held in escrow
Creators get paid when they reply
No reply within 3 days? You get a full refund.
Whether you’re a creator looking to monetize your time or someone trying to reach the right people, this is worth exploring.
It’s live on @arc Testnet. Don’t just watch from the sidelines, go try it out and see how it works for yourself. Mainnet soon 🔜
Your attention has value. So does theirs.

[attnn. @attnn_xyz]

We tested this during the Arc Programmable Hackathon.

An AI agent discovered an Attnn creator, hit our 402 Payment Required gate, and attempted to pay $0.001 USDC through PayBox.

The flow worked, except Arc wasn’t supported yet.

Today, that changed.

@arc is now live on PayBox, meaning AI agents on ChatGPT, Claude & Grok can now discover and transact with Attnn creators.

Agents can find attention.
Agents can bid for attention.
Agents can pay for attention.
The agentic economy for human attention is officially open.