The Infrastructure Layer for CrewAI Agents

BaseTool: real bridge
50: MCP tools
5: SDKs, one layer
task: level checkpoint

agentFast is the production layer for CrewAI. CrewAI is great at orchestrating role-based agent crews — agents, tasks, and the hand-offs between them. agentFast is everything a crew needs around it to run in production. Your crew stays real CrewAI; agentFast wraps it, it doesn't replace it.

What agentFast adds to CrewAI

A real BaseTool bridge

Your crew calls the same 50 MCP-native tools as every other SDK, as real BaseTool instances behind the same error vocabulary.

Task-level checkpointing

Durable state captured at task granularity through the shared store seam — a crew that dies mid-run resumes without repeating work.

Three memory tiers

Short-term buffer, long-term vector recall, episodic log, plus a scratchpad and two compaction modes.

Full observability

Every step in a step tree with cost, latency and prompt-cache accounting — OTEL and LangSmith export included.

Guardrails

PII redaction before the model sees it, injection neutralization, and token-bucket rate limits.

Evals in CI

A fresh-context judge plus deterministic scorers; agentfast eval fails the build on a regression.

From clone to a running CrewAI agent

1
Install with the CrewAI extra
2
Scaffold an agent
Config, kb/, seeded evals and a compose file.
3
Bring up the full stack
One command stands up Postgres, Redis, API, dashboard, playground.
4
Gate on quality

bash

pip install -e ".[crewai,dev]"
agentfast new support --sdk crewai
cd support-agent && docker compose up
agentfast eval

CrewAI vs. agentFast on CrewAI

	CrewAI	agentFast on CrewAI
Role-based crews, tasks, hand-offs	✓ its core strength	Uses CrewAI directly
Memory (vector + episodic)	Basic	Three tiers + compaction
50 MCP-native tools	— bring your own	Bridged as real BaseTools
Observability + cost tracing	— bring your own	✓ Included
Guardrails (PII, safety, limits)	— bring your own	✓ Included
Durable human-in-the-loop	— bring your own	Task-level, exactly-once
Evals in CI	— bring your own	✓ Included
Working reference agent	Examples	SupportAgent, point it at your KB

Complementary, not a rivalry

You don't pick agentFast instead of CrewAI — you run CrewAI through agentFast. See the full agentFast vs CrewAI breakdown, or if you haven't committed to a framework yet, compare LangGraph vs CrewAI vs a vanilla loop.

agentFast supports five SDKs behind one production layer, so the decision stays reversible. Explore durable execution, human-in-the-loop, and guardrails.

Stop rebuilding the plumbing.

agentFast is the production layer — memory, 50 tools, observability, evals, guardrails, human-in-the-loop — for LangGraph, CrewAI, the Claude & OpenAI Agent SDKs & Vanilla. Own it for life.

Get agentFast — from $89

Keep reading

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