The board · maintained by hand
Protocols & frameworks
What holds it together. The wire format everything is converging on, and the libraries worth reaching for when a plain loop stops being enough.
MCP 2026-07-28
open spec
Current spec. Stateless core, per-request capability negotiation, cacheable list results, and a formal extensions framework.
protocol
MCP extensions
opt-in, negotiated
Tasks for long-running work with durable handles, Apps for inline UI, Skills over MCP for structured agent instructions.
extensions
LangGraph
LangChain
Explicit state machines. Worth it when the control flow is genuinely a graph, not a loop.
orchestration
Pydantic AI
Pydantic
Typed outputs and typed tools for people who already think in models.
typed
DSPy
Stanford NLP
Compiles prompts against a metric instead of asking you to write them.
optimizer
Hand-maintained, not a feed. Checked 12 Aug 2026 against MCP specification. The MCP rows come from the specification; the framework rows are judgement, not vendor copy.