Agent framework · Anthropic
Claude Agent SDK
MCP-native by design - in-process servers and lifecycle hooks rather than an adapter layer.
- MCP support
- native
- Where it runs
- library
- Pricing
- Open source SDK; model usage billed via the API
- Evidence grade C
- Mixed sourcing, or vendor figures with partial corroboration
Best for
- Tool-heavy agents built on MCP
- Single-line access to a large MCP server ecosystem
- Teams that want simplicity over graph-level control
Watch out
Less fine-grained orchestration than LangGraph. If you need conditional branching and checkpointing, that is the trade.
In the FrankX stack
The substrate under the FrankX agent catalog. MCP-native is the reason the estate's tool surface composes.