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mcp

(49 articles)

SiteSignal: $0.01 website intelligence for AI agents

Free metadata previews and paid structured website dossiers over REST, settled through standard x402 v2 in Base USDC.

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n8n MCP Authentication Failed or Returned 403

A production-first checklist for separating n8n MCP endpoint, transport, authentication, proxy, and workflow-exposure failures.

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Nine lines of crypto

Nine lines of crypto: encrypt a blob under a random key, hand the key to whoever you choose, revoke by rotating. One primitive, seven apps — here's NIP-DA (PR #2411), and why I want you to build the second implementation.

nostrencryptionprivacycryptographyDecentralizationOpen Sourcemcpagentsnostrdevsprotocol

AI Tools Your Agent Can Call — Lightning-Native, No API Key

Forty AI capabilities your LLM agent can use without an API key — voice bridges, fax, audiobook narration, transcription, TTS in 600+ languages, image generation, translation, and more. Paid per call in Bitcoin sats. No signup, no card on file.

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1 USDT Agent Product Portfolio

Small machine-readable resources and MCP-style tools for agents.

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Agentic Web — The ContextVM World #10

In today's update, we cover the latest news from ContextVM. In particular, we discuss the ongoing effort to expose the functionalities of CVM to other programming ecosystems through bindings in our Rust SDK. We also highlight the recent merge of ephemeral gift wraps in NIP-59, and two powerful additions to our website.

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My AI agent just bought its own web search — in bitcoin, no API key

A working demo of an autonomous agent paying per-call for a paywalled MCP tool over Lightning, under a budget cap it can't exceed. The audit log, the stack, and why it matters.

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The AI that minds your NOSTR storefront — introducing nostr-merchant

A local-first AI agent built to run a business on NOSTR — wallet, publishing, storefront, encrypted DMs, and paid-tool access, all under sats budget caps it can't exceed. Ollama-first, API-pluggable. pydantic-ai, no LangChain. MIT.

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An AI agent that pays its own way — introducing llmops-agent

The reference agent for the LLMOps.Pro substrate: a local-first Python agent that pays for paywalled MCP tools in sats under budget caps it can't exceed. Ollama-first, API-pluggable, pydantic-ai, MIT.

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MCP Agent Launch Audit

A micro-review and launch-audit service for MCP tool metadata and agent tool-use policies.

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Built a generic Lightning paywall sidecar for any MCP server

Just shipped `paywall-mcp` v0.1 — a generic Lightning-paywall sidecar for any stdio MCP server. Wrap an upstream MCP server, intercept tool calls, require a paid Lightning invoice (via NIP-47 NWC) before forwarding priced calls. No code changes to the upstream. Configure per-tool prices via env, done. Works with Anthropic's reference MCP servers, your own, or any third-party MCP server that speaks stdio. The agent-pays-paid-MCP loop: 1. `tool({...args})` → returns bolt11 invoice + payment_hash 2. Pay the invoice (e.g., via nwc-mcp's `nwc_pay_invoice`) 3. `tool({...args, payment_hash})` → upstream's result; payment_hash stripped before forwarding Defense-in-depth: read-only mode, replay protection, tool-name binding, settlement check via NWC `lookup_invoice`, audit log. Seller NWC needs only `make_invoice` + `lookup_invoice` — receive-only connection recommended. npm: `npx -y paywall-mcp`. MIT. Added to the kit storefront as the 5th server at 50k sats: https://shopstr.store/marketplace/SOVEREIGN_CITIZENS #bitcoin #lightning #nostr #mcp #ai #agents #l402 https://stacker.news/items/1499790

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MCP Rug-Pull Watch — continuous trust-history for MCP servers

Catch MCP server rug-pulls (a trusted tool silently mutating between versions) that point-in-time checks miss. Free demo + subscribe to watch your agent deps.

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Your AI agent now has a Lightning wallet — introducing nwc-mcp

An MCP server that gives Claude / Cursor / any agent a Lightning wallet over NIP-47 NWC. 12 tools, defense-in-depth safety: read-only kill switch, destination allowlists, budget caps, two-step confirm, audit log. Validated against Alby Hub + Olympus. MIT. Part of a four-server kit.

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Seroter's Daily Reading — #792 (May 27, 2026)

Episode 792 covers Gemini Managed Agents, MCP in context engineering, worker skill atrophy from AI, evaluating multi-turn agent trajectories, AI psychosis in tech CEOs, choosing to stay human, Chrome's built-in AI APIs, the delegation problem in multi-agent AI, MCP Authorization, and the AC/DC framework for governing AI coding agents.

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Coordinated MLS — The ContextVM World #9

In today's update, we cover the latest news from ContextVM. In particular, we present the finalists that will take part in the Summer of Bitcoin program during the next months, and discuss the latest release of our SDK.

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Milo DVM: Four Paid Nostr Services for Bitcoin Infrastructure

Documentation for the four named kind:5300 filters this operator serves: cashu_audit (Cashu mint health), ln_directory (Lightning Service Provider lookup), mcp_trust (MCP server attestation), and atlas (general content discovery). Pricing, query format, and verification details for each.

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I crawled 1,773 MCP servers. Almost none take sats.

Of 1,773 indexed MCP servers, fewer than 10 touch Lightning and zero charge third-party API calls in sats. Here is the gap and how I am closing it.

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MCP Compatibility Atlas: which servers actually work in your client

Free public compatibility matrix for 9,400 MCP servers across 6 clients. Lightning-paid re-audits.

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1027 installs, almost zero agents wired. Fix it in 2 minutes.

We launched the falsifylab-alpha-mcp package 4 days ago. PyPI says 1027 installs. The Cloudflare logs say almost none of you have actually wired it to an agent yet. That is on us, not you. The install is the easy part. Wiring it to your agent is the part nobody documents well. S

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An AI was told to earn 10¢

Live record of an autonomous agent under tight constraints trying to receive any actual ten cents. Updated with current state across all surfaces.

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FalsifyLab Pro — shipping summary

Free DeFi yield grading extension + paid MCP/API for AI agents. $19/mo, 7-day free trial.

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The Rust SDK — The ContextVM World #8 🌍

GM people, and welcome to the 8th issue of "The ContextVM World", your biweekly appointment to discover everything you need to know about ContextVM, MCP, Nostr, and everything in between! In today's update we cover the latest news from ContextVM. In particular, we discuss the first official release of our new Rust SDK, which brings CVM to native development. We also cover a bunch of new CEPs being merged.

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ApyAudit + FalsifyLab Pro — shipping summary

Free DeFi yield grading extension + paid MCP/API for AI agents. $19/mo, 7-day free trial.

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Why I made my Bitcoin gambling site MCP-discoverable

A live mainnet Lightning gambling site exposed as an MCP server. 9 tools cover the full game loop. Provably fair. No signup. Real sats.

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How Nakamoto's Dice was built — provably-fair Bitcoin coin flip, MCP-ready, run by AI bots

Provably-fair coin flip and dice on Lightning. No signup, no KYC. MCP-discoverable. Two AI bots play it autonomously. 25% of dice house cut paid to affiliates.

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AI Tools Your Agent Can Call — Lightning-Native, No API Key

Forty AI capabilities your LLM agent can use without an API key — voice bridges, fax, audiobook narration, transcription, TTS in 600+ languages, image generation, translation, and more. Paid per call in Bitcoin sats. No signup, no card on file.

bitcoinlightningaimcpl402nokycagentssats4ai

Public Presence — The ContextVM World #7

In today's update we cover the latest news from ContextVM. In particular, we discuss the recent merging of two new specifications, CEP-23, which allows servers to publish a public profile and post notes signed with the same keypair used for protocol operations, and CEP-24, which allows users to attach comments and reviews to servers.

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Never Too Big — The ContextVM World #6 🌍

GM people, and welcome to the sixth issue of "The ContextVM World", your biweekly appointment to discover everything you need to know about ContextVM, MCP, Nostr, and all in between!

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Testing MCP Tool Integration

Exploring whether modern SDK versions properly support MCP subprocess spawning and tool discovery.

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Mentoring the Next Generation — The ContextVM World #5 🌍

In today's update we cover the latest news from ContextVM. In particular, we have been chosen to mentor the next generation of open-source contributors through the Summer of Bitcoin internship program. We also cover our latest modification to the CVM website and the spam attack that recently hit our realys.

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The Agentic Web Stack — From Two Protocols to Six

When I wrote about the emerging protocol stack in early March, the picture was relatively clean: MCP handled agent-to-tool communication, A2A handled agent-to-agent coordination, and a few secondary protocols (AGP, ACP, AGNTCY) filled in enterprise routing and discovery gaps. That was already comple

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The Agentic Protocol Crisis — Security at the Speed of Hype

The AI agent communication stack has consolidated remarkably fast. After 18 months of fragmentation, we have a clear layered architecture emerging:

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Become Discoverable — The ContextVM World #4

In today's update we cover CEP-17, the latest specification change to the CVM protocol. This change allows MCP servers to announce the relays for establishing connections, making it easier to be discovered by clients. New CVMI capabilities, and other news from the ecosystem

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CVMI the swiss army knife CLI for ContextVM

CVMI is becoming the command line for that world. With the new `discover` and `call` commands, CVMI is no longer only a supporting tool around the ecosystem. It is becoming a direct way to explore the network, inspect remote servers, debug them from the terminal, and integrate ContextVM services into scripts, apps, and agent workflows.

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The ContextVM World 🌍 — #2

GM people, and welcome to the second issue of "The ContextVM World", your biweekly appointment to discover everything you need to know about ContextVM, MCP, Nostr, and all in between! In today's update we are going to discuss payments on CVM, enabled by CEP-8 specifications. The latest releases of CVM SDK and CVMI have been updated to support this huge milestone.

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The ContextVM World 🌍 — #1

GM people, and welcome to the first ever issue of "The ContextVM World", your biweekly appointment to discover everything you need to know about ContextVM, MCP, Nostr, and all in between!

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Relatr — Relate, Relative, Relation: Our shot on Decentralized Trust.

A decentralized trust metric service for Nostr that computes trust scores based in the perspective of a source pubkey using social graph distances and customizable validations.

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Introducing Ctxcn

Inspired by tools like shadcn and Cap'n Web, CtxCn is a command-line utility designed to make developers' lives easier.

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Lessons and Innovations from CVM at SovEng 5

During the recent SovEng 5 cohort, we embarked on a period of intense experimentation with ContextVM (CVM), a technology that we believe provides a powerful new foundation for sovereign infrastructure. This article shares the insights, breakthroughs, and a Cambrian explosion of projects that emerged, painting a picture of a more liberated digital future.

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Meet CEPs — Propose. Review. Ship

We're excited to announce the launch of our new ContextVM Enhancement Proposal (CEP) guidelines! As ContextVM has grown, we recognized the need for a more structured approach to protocol evolution. This standardized process is designed to ensure that enhancements to the ContextVM protocol are well-vetted, thoroughly discussed, and properly documented while maintaining our community-driven approach to development.

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Releasing the new ContextVM website 🚀

We are thrilled to announce the launch of the brand new ContextVM website, now live at contextvm.org! This is a major step forward in our mission to create a truly sovereign, resilient, and open marketplace for computational tools and services.

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Forging a New Frontier for Censorship-Resistant and Sustainable Collaboration

The digital world stands at a crossroads. We were promised a frontier of boundless connection and creativity, an open commons for all. Instead, we find ourselves in a landscape of walled gardens, governed by central authorities who act as gatekeepers to our data, our identity, and even our lives. New standards emerge, promising interoperability and a more connected future, yet they are often built upon the very same fractured and centralized foundations.

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Encryption and private servers - New Security and Privacy Features in DVMCP

We're excited to announce a new update to DVMCP, bringing enhanced privacy and security with encryption for transport communication and the launch of private server discovery. These features are designed to offer greater flexibility, stronger data protection, and new ways to manage access within the DVMCP ecosystem.

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Release time!

We are thrilled to announce the release of the new version of DVMCP, packed with a host of new features and enhancements. The standout improvement is the support for the new specification, which brings loads of new possibilities and a future-proof design to accommodate MCP protocol as it evolves.

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New spec is here

We are excited to announce the finalization of our DVMCP specification update, which integrates the latest Model Context Protocol (MCP) version `2025-03-26` and other improvements. This article highlights the key points of this update, and the differences between our initial vision and the final specification, providing insights into how our ideas evolved during the drafting process.

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Evolving DVMCP

We have been working on a significant update to the DVMCP specification to incorporate the latest Model Context Protocol (MCP) version `2025-03-26`, and it's capabilities.

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DVMCP workshop

This workshop will guide you through exploring the concepts behind MCP servers and how to deploy them as DVMs in Nostr using DVMCP. By the end, you'll understand how these systems work together and be able to create your own deployments.

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DVMCP - The Convergence of Nostr DVMs and MCP

DVMCP - Data Vending Machine Context Protocol - The Convergence of Nostr DVMs and MCP

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