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Agent infrastructure
The Fediverse-standard discovery protocol for federated services, served at /.well-known/nodeinfo and /.well-known/nodeinfo/2.1. NodeInfo advertises software name, version, supported protocols, open-registration status, and usage metrics. VC Deal Flow Signal serves NodeInfo 2.1 to allow Fediverse crawlers, Mastodon instances, and Lemmy nodes to enumerate the site as a federated content source rather than treating it as an opaque domain.
MCP, A2A, micropayments, identity, federation.
An open standard from Anthropic for exposing tools and data to large-language-model hosts (Claude Desktop, Cursor, agentic frameworks).
Google's Agent-to-Agent protocol — a JSON-RPC envelope plus an /.
The canonical wire transport for MCP servers running over HTTP — a JSON-RPC 2.
A stateless remote-procedure-call protocol encoded in JSON — request envelopes carry method, params, and id; response envelopes carry result or error.
An open standard for HTTP per-request micropayments using the existing 402 Payment Required status code.
An RFC 7033 protocol for discovering information about a user or resource at a domain by querying /.
A W3C-standard identifier scheme that lets entities prove control of an identifier without relying on a centralised registry.
This definition is published under CC BY 4.0. Cite as:
The Data Nerd. "NodeInfo 2.1." VC Deal Flow Signal Glossary, https://signals.gitdealflow.com/define/nodeinfo.
The free Acceleration Watch turns terms like NodeInfo 2.1 into five named, accelerating startups every Sunday — translated into plain English, 21 to 47 days before the deck circulates. No code-reading, no card.