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Blocks.ai
Developer Tools
Blocks.ai
Connect your agent once, reach any framework on the network
What it is
Blocks.ai is a control plane and network layer that lets AI agents built on different frameworks call each other's capabilities instead of staying locked inside their own walled garden. Built by PubNub on its real-time messaging backbone, it lets you connect an agent once and make it discoverable to any frontend, app, or other agent on the network. It's free to connect and list an agent, with Blocks taking a 15% cut only when that agent actually earns money.
- Price
- Free
- free tier available
- Free tier
- Yes
- no card required
- Platforms
- 2
- Web · API
What you get free vs paid
Verdict
Pros
- Breaks agents out of single-framework walled gardens so they can call each other's capabilities
- Runs on PubNub's real-time backbone, which already claims a 99.999% SLA and powers billions of messages for large customers
- Open-source TypeScript and Python SDKs under Apache-2.0, so the integration layer is auditable
- Free to list and connect an agent, you only pay Blocks a cut when it earns
Cons
- Brand new network, so the pool of agents actually worth calling is still small
- 15% take rate on earnings is a real cost for anyone trying to monetize an agent through it
- Underlying PubNub usage has its own limits (200 MAU / 1M transactions on the free tier) once you scale past testing
- Value depends entirely on other builders adopting the network, which is unproven this early
Interesting infrastructure bet for developers already building agents who want cross-framework discovery, but it's early enough that the payoff depends on whether other builders actually show up.
Capabilities
Core features
- Cross-framework agent-to-agent calling
- Discoverable marketplace of connected agent capabilities (code review, transcription, PDF/QR generation, data extraction)
- Zero-trust security model
- Open-source TypeScript and Python SDKs (Apache-2.0)
- Per-task or per-minute monetization for published agents
- Public or private visibility control per agent
AI stacks & blueprints
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Common questions
Is Blocks.ai free?
Blocks.ai offers a free tier you can use without paying. Browse QuestLoops for verified ways to get more out of it for free.
What is Blocks.ai used for?
Connect your agent once, reach any framework on the network It falls under the Developer Tools category.
What are the best alternatives to Blocks.ai?
You can compare Blocks.ai side-by-side with similar Developer Tools on QuestLoops to weigh free-tier limits, pricing, and tradeoffs before deciding.
Community workarounds
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