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ContextVM
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ContextVM is a decentralized protocol that enables Model Context Protocol (MCP) servers and clients to communicate over the Nostr network. It uses Nostr as a secure, distributed transport layerβ€”leveraging cryptographic keys for identity, decentralized discovery, and Bitcoin-powered micropayments. Rather than relying on centralized infrastructure like domains, OAuth, or cloud hosting, ContextVM allows anyone to run or access services using only Nostr and a internet-connected device. It transforms any computational service into a discoverable, accessible, and monetizable resourceβ€”while preserving privacy, security, and user sovereignty.
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ContextVM 4 months ago
With this release, Relatr can now function as a TA provider, publishing ranks directly to relays. If you enable a Relatr server to be in your trusted list of providers, it will display ranks in compatible clients like Amethyst. To do this, simply go to https://relatr.xyz/ta and add a server to your list. Once added, you can enable the server to keep your rank up to date. The process is quite simple and straightforward. I would love to receive any feedback you might have πŸ‘ View quoted note β†’
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ContextVM 4 months ago
πŸš€ wotrlay v0.2.x is here As wotrlay matures, we've identified and addressed edge cases where transient issues could temporarily affect user buckets. Timeouts, rate limits, and network conditions sometimes caused the relay to handle cache refreshes less gracefully than intended, which could result in users being downgraded when they shouldn't have been. v0.2.x resolves this. The relay now preserves cached rank data when encountering these edge cases, ensuring users can continue publishing without issues. We've also replaced IP-based rate limiting for rank lookups with an approach that no longer penalizes users behind VPNs, and improved response handling to be more robust under real-world conditions. We've also added a special condition for event kinds 0, 3, 10002, 10040, and 30382, which are now always accepted and are not affected by the rate limiting of the bucket algorithm. For operators: just upgrade. For users: your posting ability now stays consistent regardless of previously unhandled edge cases. Docker builds are leaner and faster too. Building reliable WoT infrastructure means continuously observing, fixing, and improving. v0.2.x represents that ongoing commitment πŸ«‚ #nostr #wotrlay #wot
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ContextVM 4 months ago
Last week, when we introduced Wotrlay, we mentioned in our blog post that we were writing an article about how to call a CVM server 'The Nostr Way.' This new article is now available. In it, we explore the current landscape of 'RPC-nostr' with a technical approach, comparing DVMs and CVMs, and demonstrating how to call CVM servers without SDKs or other dependencies, just events, relays, and signatures. We hope you enjoy reading it and that it encourages you to build on top of ContextVM. If you have any doubts or need clarification, please let us know in the comments View article β†’
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ContextVM 4 months ago
πŸŽ‡ It has been an incredible year for ContextVM. 2025 marked the birth of this project, initially known as DVMCP, which we launched shortly after the MCP protocol was introduced. This year has been a whirlwind of experimentation, creation, innovation, new possibilities, and loads of fun. Developers are discovering a transformative way to work with ContextVM, thanks to its unique features, ease of use, expressiveness, flexibility, standardization, and seamless integration with new paradigms like AI, all while remaining fully permissionless and open source πŸš€ Product managers and those looking to integrate their services on Nostr to leverage its benefits are finding that ContextVM offers a powerful way to architect their products and solutions. By using relays as message buses, you can decouple the business logic of your application from Nostr specific conventions while still benefiting from Nostr's security and censorship resistance. You can seamlessly integrate ContextVM with your existing stack without needing to rewrite everything to make it work over Nostr. This opens up possibilities for unified APIs, geographically distributed, composable, unstoppable apps, and more, the possibilities are endless and yet to be discovered. 2026 promises to be another amazing year. ContextVM is a community driven, fully open-source project that anyone can use, contribute to, or fork. Our vision is one where this technology liberates individuals, communities, businesses, and other entities from the control of gatekeepers and power structures. The future we envision is permissionless and full of collaboration between free individuals, positive-sum games, where the right to speak, associate, and the right to compute are equally important and transcendental. We have a lot of work ahead, and that makes us really happy 🦾 Powerful features and specifications are already in development, promising even more possibilities, integrations, and capabilities. We hope that 2026 will see more people adopting Nostr, Bitcoin, CVM, and other freedom technologies, bringing and solving problems through this lens. Without further ado, thank you to everyone who showed interest, contributed, integrated, and benefited from this project. We wish you all a great start to the new year πŸ’› Let's continue building!
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ContextVM 4 months ago
After running a public instance of Wotrlay for a couple of days already (wss://wotr.relatr.xyz), we discovered a fascinating synergy between Wotrlay and Relatr πŸ‘€ They complement each other perfectly. As more people use or include this relay in their lists, their interactions on Nostr organically prompt Relatr to validate profiles that might not already be in its database. This process helps Relatr validate and rank these new profiles, increasing the number of relations in its view of the network. Consequently, the more people who use our Wotrlay instance (or their own), the fewer blind spots a Relatr instance will have, creating a perfect tandem of openness and organic discovery. This synergy was not something we anticipated when we first conceived Wotrlay, but it works beautifully πŸ’› If you'd like to help us test this further, please add wss://wotr.relatr.xyz to your relay list. Soon, we will provide more options and documentation to make deploying Wotrlay easier, so running your own instance should be fairly straightforward. Relatr is already deployable in one click in umbrel through @hzrd149 's community store and also is available as docker image
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ContextVM 4 months ago
What if relay moderation looks like a bucket?πŸͺ£ We are exploring exactly that with Wotrlay, a new WoT relay we are introducing today! It treats moderation as resource allocation, where the web of trust determines your publishing capacity. Wotrlay gives each public key a 'bucket' of publishing capacity that refills at different rates based on their social graph rank. Low-rank identities can still participate, but at a measured pace. Higher-rank identities gain more capacity organically through network participation, no manual approval needed. Try the public instance at wss://wotr.relatr.xyz This proof-of-concept integrates Relatr for dynamic ranking and is built in Go using the great Rely framework from @Pip the WoT guy. Kudos to him for it and the WoT example that inspired this project. If you want to dig deeper, we've published an article that walks through the bucket model, progressive rate limiting, newcomer onboarding, and why this approach avoids auth friction while keeping the relay permissionless in practice. All the code for this project, is open source and is made to be run by anyone πŸ’› https://www.contextvm.org/blog/wotrlay-moderation-as-a-bucket check out the code and more details at: View article β†’
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ContextVM 4 months ago
Happy Christmas! Thank you to everyone for accompanying us this year πŸ’› We have a little, yet special gift for you. We revamped our website. It was functional, but lacked content and a better design. Now you can find much more information, contact details, and all the links to navigate the ContextVM ecosystem, learn more, build, or participate. We take advantage of this opportunity to also make a slight modification to our logo. We hope you like all of this. We want to make ContextVM a great ecosystem of freedom tech where everyone feels welcome and supported, and part of it is to make it beautiful. Committed to open source. Let's keep building! 🫑 Visit: https://www.contextvm.org/ If you have any feedback, we would love to hear it! image
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ContextVM 4 months ago
πŸš€ CVM SDK v0.1.47 has landed! 🌟 This release packs a punch with improved reconnection handling. Previously, if a relay used by a client and a server experienced a prolonged outage (minutes or hours), the apple-sauce relay handler would fail to publish new messages after the relay came back online. With this update, clients and servers automatically handle this, resubscribe and resume event sending as soon as the relay is back online. Server operators, don't miss out, update to the latest SDK version for a smoother, more reliable experience.
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ContextVM 4 months ago
Performing some maintenance on our public relatr instance, sorry for the inconvenience.
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ContextVM 4 months ago
πŸŽ‡The awesome CVM repo is growing! Three new servers have been added in the past few days. They are: - Nanalytics (https://github.com/humansinstitute/nanalytics): Website analytics like your Nanna used to bake. Over Nostr, privacy-preserving, simple analytics, easy to host. - Earthly Geo Server (https://github.com/zeSchlausKwab/earthly/tree/master/contextvm): A server focused on geocoding and reverse geocoding via OpenStreetMap Nominatim. Features search_location for forward geocoding and reverse_lookup for coordinate-based place metadata. - Wavefunc Music Metadata Server (https://github.com/zeSchlausKwab/wavefunc/tree/main/contextvm): A server for radio stream metadata extraction and MusicBrainz lookups. Features extract_stream_metadata for Icecast/Shoutcast streams and musicbrainz_search for detailed track information. The Geo Server and the Music Metadata Server are also public and are already integrated into earthly.city and wavefunc.live. They are accessible and can be used through the Contextvm website as well.
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ContextVM 5 months ago
πŸš€ContextVM SDK version 0.1.41 is now available with significant improvements to transport integration, relay handling, and async architecture. Key new features include optional client public key injection in MCP requests, enabling better server integration and authentication capabilities. This feature, documented in CEP-16, allows server transports to inject client public keys into request metadata when configured with `injectClientPubkey: true`. Learn more at The release also brings robust relay reconnection for Nostr server transport, fixing relay restart issues in ApplesauceRelayPool with comprehensive reconnection tests. This ensures more robust operations in long lived servers. Performance improvements come from async architecture enhancements including a TaskQueue utility for non-blocking event processing, parallel transport startup operations, LRU caching for session management, optimized authorization lookups, and improved notification broadcasting with backpressure handling. These changes deliver better integration between transports and underlying servers, more reliable relay handling, and enhanced performance through optimized async operations.
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ContextVM 5 months ago
πŸš€ Exciting news! We're working on a new CEP for ContextVM: Common Tool Schemas! 🌐 Imagine a marketplace where users can choose the best server for their specific needs, without being locked into a single provider. That's the vision behind our new CEP! With Common Tool Schemas, we're enabling interoperability between clients, allowing users to discover equivalent services, switch providers seamlessly, and compare offerings based on quality, cost, or trust. This is the original idea behind DVMs, where users announce a desired output and service providers compete to fulfill the job requirement in the best way possible. πŸ”§ Key features: - Reference server pattern for canonical tool schemas - RFC 8785 JCS for deterministic hashing - CEP-6 announcements for discovery We'd love to hear your thoughts and opinions on this proposal! Share your feedback and help us shape the future of ContextVM. You can just share your thoughts in the comments of this note, or in the issue #ContextVM #CEP
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ContextVM 5 months ago
Today, we are releasing Relatr v0.1, featuring significant architectural improvements powered by the new Nostr Social Duck library. This update addresses critical scaling challenges and makes running your own trust engine more accessible than ever. We have written an article that delves into the details of this new release and provides other useful resources. We hope you enjoy it as much as we do πŸ’› View article β†’
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ContextVM 5 months ago
This is another awesome example of the possibilities that bring contextvm. Easily deployable analytics for your page, with no more dependencies on evil corporations that harvest your data. Reclaim your sovereignty, and have fun along the way, it has never been this easy View quoted note β†’
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ContextVM 5 months ago
Half of the internet is down today, but Nostr is unaffected. None of the ContextVM ecosystem is down either. Some clients and relays might be down if they are behind Cloudflare, but the protocol itself is not affected. A protocol cannot be taken down; it will find a way. If a client is down, you can switch to another client or, even better, run one locally. Jumble and Nostrudel are already good options for this. If a relay is down, you can go to nostr.watch, pick a new one, and use it to communicate. Even better, you can run your own relay. It can be as easy as running Citrine on your phone and exposing the relay through Tor. No domain is needed; just a couple of apps on your phone and voilΓ , you can still communicate with your peers. Be your own infra provider. This is why ContextVM. View quoted note β†’
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