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Agent Frameworks & SDKs Arena

Agent Frameworks & SDKs arenaBuyer checklist

Every requirement we judge agent frameworks & sdks products against, as a ready-to-send RFP checklist — with each item's priority, why it matters, and how the top-ranked products score on it today.

51 requirements · 13 themes · verdicts for 9 products · updated 2026-09-16 · priorities mirror the story weights our scoring uses (methodology)

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# Agent Frameworks & SDKs — buyer checklist (RFP)

Derived from ProductArena's evidence-graded user-story taxonomy for Agent Frameworks & SDKs: 51 judged requirements. Priorities mirror story weights (3 = must-have, 2 = should-have, 1 = nice-to-have).

## Agenticness

- [ ] **[must-have]** Plug MCP servers into this product so it can use their tools
- [ ] **[must-have]** Connect an agent via an official MCP server
- [ ] **[must-have]** Drive the product through a documented public API
- [ ] **[must-have]** Delegate tasks to a built-in AI assistant inside the product
- [ ] **[should-have]** Point an agent at llms.txt or agent-oriented docs
- [ ] **[should-have]** Run the product headlessly / in CI for automation
- [ ] **[should-have]** Use an official CLI
- [ ] **[should-have]** Issue scoped/least-privilege API credentials for an agent
- [ ] **[should-have]** Build against official SDKs
- [ ] **[should-have]** Subscribe to events via webhooks
- [ ] **[should-have]** Get AI-generated insights and suggestions from my data inside the product
- [ ] **[should-have]** Set up automations that run autonomously in the background
- [ ] **[should-have]** Operate the product with natural-language commands
- [ ] **[should-have]** Explore an interactive API reference with runnable examples
- [ ] **[should-have]** Download a machine-readable API spec (OpenAPI or equivalent)
- [ ] **[should-have]** Rely on versioned APIs with a documented deprecation policy
- [ ] **[nice-to-have]** Test against a sandbox environment without touching production data

## Agents tools

- [ ] **[must-have]** Define an agent with typed custom tools in a few lines of code
- [ ] **[should-have]** Have a coding agent scaffold a new agent project from an official CLI or template in one command
- [ ] **[should-have]** Run the framework's example agents headlessly from a terminal so an agent can verify what it just built
- [ ] **[should-have]** Rely on strict typing and schema validation so a coding agent catches its own mistakes at build time

## Automation depth

- [ ] **[must-have]** Define rules that trigger actions automatically on events
- [ ] **[should-have]** Perform bulk operations across many items at once
- [ ] **[should-have]** Schedule recurring jobs or workflows
- [ ] **[nice-to-have]** Version, review, and roll back my automations

## Deployment portability

- [ ] **[must-have]** Swap the underlying LLM provider or model without rewriting my agent
- [ ] **[should-have]** Deploy an agent to a managed runtime and call it as an API endpoint
- [ ] **[should-have]** Run my agents entirely on my own infrastructure with no dependence on the vendor's platform

## Evals observability

- [ ] **[must-have]** Trace every LLM call and tool invocation of an agent run in an observability UI
- [ ] **[should-have]** Score agent quality with built-in evals and run them as part of CI
- [ ] **[should-have]** Unit-test agents with mocked models and tools

## Guardrails safety

- [ ] **[must-have]** Attach input/output guardrails that validate, transform, or block unsafe content
- [ ] **[should-have]** Restrict what an agent may do with fine-grained tool permissions and sandboxed execution

## Human in the loop

- [ ] **[must-have]** Pause an agent mid-run for human input or approval and resume with the human's decision
- [ ] **[should-have]** Require human approval before specific sensitive tool calls execute

## Memory context

- [ ] **[should-have]** Trim, summarize, or filter conversation history to keep an agent inside its context window
- [ ] **[should-have]** Give agents long-term memory that persists across sessions and threads

## Openness

- [ ] **[must-have]** Export all of my data in open formats and leave
- [ ] **[must-have]** Self-host the core product
- [ ] **[should-have]** Do everything through the API that I can do in the UI
- [ ] **[should-have]** Read the product's source under an open license

## Orchestration multi agent

- [ ] **[must-have]** Orchestrate multiple agents — handoffs, subagents, or crews — inside one workflow
- [ ] **[should-have]** Compose agents into an explicit graph or workflow with branching, loops, and parallel steps

## Privacy posture

- [ ] **[must-have]** Prevent my data from being used to train AI models
- [ ] **[should-have]** Choose where my data is stored (region/residency)
- [ ] **[should-have]** Control data retention and deletion
- [ ] **[should-have]** Opt out of telemetry and usage tracking

## State durability

- [ ] **[must-have]** Checkpoint agent state so a run can resume exactly where it left off after a crash or restart
- [ ] **[should-have]** Run long-lived agents durably across process restarts and deploys, natively or via durable-execution integrations

## Streaming output

- [ ] **[must-have]** Stream tokens and intermediate agent events (tool calls, steps) to my UI in real time
- [ ] **[must-have]** Get schema-validated structured output from an agent, with automatic retries when validation fails

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Source: https://ultrametric.ai/productarena/arena/agent-frameworks (evidence-graded verdicts for 9 products) · methodology: https://ultrametric.ai/productarena/methodology

Chips show the top 5 ranked products' current verdict on each requirement — ✓ full · ~ partial · ! disputed · — none · n/a not applicable.

Agenticness — how well agents can access and operate the productAgenticness· 17 items

How well agents can access and operate the product

Agents tools — stories about agents tools in this arenaAgents tools· 4 items

Stories about agents tools in this arena

Automation depth — how much of the product can run unattendedAutomation depth· 4 items

How much of the product can run unattended

Deployment portability — stories about deployment portability in this arenaDeployment portability· 3 items

Stories about deployment portability in this arena

Evals observability — stories about evals observability in this arenaEvals observability· 3 items

Stories about evals observability in this arena

Guardrails safety — stories about guardrails safety in this arenaGuardrails safety· 2 items

Stories about guardrails safety in this arena

Human in the loop — stories about human in the loop in this arenaHuman in the loop· 2 items

Stories about human in the loop in this arena

Memory context — stories about memory context in this arenaMemory context· 2 items

Stories about memory context in this arena

Openness — open source, data portability, and self-hosting storiesOpenness· 4 items

Open source, data portability, and self-hosting stories

Orchestration multi agent — stories about orchestration multi agent in this arenaOrchestration multi agent· 2 items

Stories about orchestration multi agent in this arena

Privacy posture — data-handling and privacy storiesPrivacy posture· 4 items

Data-handling and privacy stories

State durability — stories about state durability in this arenaState durability· 2 items

Stories about state durability in this arena

Streaming output — stories about streaming output in this arenaStreaming output· 2 items

Stories about streaming output in this arena

Full evidence behind every verdict lives on the arena page and each product page — chips above deep-link straight to the judged story.