Best delegated OAuth platforms for agents acting on behalf of users
4 models · updated 2026-08-10
The verdict
Arcade leads — 2 of 4 models rank Arcade the top pick.
Not unanimous: Claude picks Auth0; Gemini picks Nango.
As of 2026-08-10, ChatGPT, Claude, Gemini and Grok collectively rank Arcade #1 for delegated oauth platforms for agents acting on behalf of users on ModelsAgree by aggregate score. The models' case: Best agent-native security model: just-in-time, tool-level OAuth scopes, tokens hidden from both model and client, strong policy/audit controls, custom providers, and. The models' main caveat: Its runtime-centric approach and smaller turnkey integration catalog make it excessive for teams wanting only a lightweight OAuth broker. The strongest alternative is Composio — Excellent developer value across 1,400+ toolkits, with user-scoped sessions, in-chat authorization, managed or bring-your-own OAuth apps, automatic. Not unanimous: Claude picks Auth0; Gemini picks Nango. Source: https://modelsagree.com/best/best-delegated-oauth-platforms-for-agents-acting-on-behalf-of-users (modelsagree.com, CC BY 4.0).
Combined ranking
- 1GPT #1Claude #2Gemini #3Grok #1
Best agent-native security model: just-in-time, tool-level OAuth scopes, tokens hidden from both model and client, strong policy/audit controls, custom providers, and cloud or self-hosted deployment; ranked first assuming least-privilege execution matters more than maximum connector count
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GPT Best agent-native security model: just-in-time, tool-level OAuth scopes, tokens hidden from both model and client, strong policy/audit controls, custom providers, and cloud or self-hosted deployment; ranked first assuming least-privilege execution matters more than maximum connector count
Grok Runtime-enforced two-identity (user + agent) delegated context with per-action permission intersection before tool calls, secure per-user OAuth token vault + auto-refresh that keeps credentials entirely out of LLM reach by hosting execution, just-in-time consent, MCP gateways, and OTel audit; assumption that production multi-user agents need call-time authorization over pure connector count
Claude Purpose-built for exactly this problem — agents calling tools with per-user OAuth, with a token vault and auth flows that trigger during agent execution rather than only at login; clean SDKs and framework hooks (LangChain, etc.) make "let the agent act as this specific user" a few lines of code.
Gemini Purpose-built for agentic security using MCP-native architecture, RFC 8693 token exchange, and just-in-time user authorization loops that prevent confused-deputy vulnerabilities during autonomous execution. (Assumption: Security-conscious enterprise teams prioritize strict policy enforcement over sheer integration count.)
Where it falls shortper GPT Its runtime-centric approach and smaller turnkey integration catalog make it excessive for teams wanting only a lightweight OAuth broker
per Claude Younger and smaller than the incumbents, with a thinner prebuilt tool catalog than Composio and far less enterprise identity/compliance surface than Auth0/Okta.
per Gemini Has a smaller catalog of out-of-the-box integrations than general auth providers, making it not for developers who want plug-and-play connections to hundreds of niche long-tail APIs without custom tool wrapping.
per Grok Narrower first-party integration catalog and opinionated execution model make it less suitable if you only need credential access without adopting its runtime
- 2GPT #2Claude #4Gemini #2Grok #2
Excellent developer value across 1,400+ toolkits, with user-scoped sessions, in-chat authorization, managed or bring-your-own OAuth apps, automatic refresh and revocation, authenticated proxy execution, and broad framework support; a near-tie with Pipedream, winning on agent-native ergonomics
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GPT Excellent developer value across 1,400+ toolkits, with user-scoped sessions, in-chat authorization, managed or bring-your-own OAuth apps, automatic refresh and revocation, authenticated proxy execution, and broad framework support; a near-tie with Pipedream, winning on agent-native ergonomics
Gemini Delivers an end-to-end managed platform pairing per-user OAuth authentication with 250+ pre-built agent toolkits, seamless framework integrations (LangChain, CrewAI), and automated token lifecycle orchestration. (Near-tie with Nango; ranked second because it is a closed managed service rather than open source.)
Grok Broadest practical toolkit catalog with managed per-user OAuth isolation, automatic token lifecycle, framework SDKs, and native MCP support that lets most practitioners ship secure delegated tool-calling agents quickly
Claude Largest managed catalog (250+ tools) with per-user OAuth handled for you, so the practitioner who mainly needs breadth — Gmail, Slack, GitHub, Notion, etc. acting as the end user — gets the shortest path to many integrations.
Where it falls shortper GPT Catalog depth and managed-auth quality vary, and serious production deployments often need custom OAuth apps for branding, scopes, quotas, and tighter control
per Claude It's an integration-platform first, security/identity second; token custody and governance are features rather than a hardened identity posture, which matters for regulated/enterprise use.
per Gemini Dependent on Composio's managed cloud infrastructure and tool schemas, making it unsuitable for organizations needing self-hosted compliance, VPC isolation, or direct raw token extraction.
per Grok Weaker runtime policy intersection and standardized audit export than purpose-built action runtimes; not the strongest choice for strict enterprise governance of every action
- 3GPT #4Claude #5Gemini #1Grok #3
Offers open-source self-hosting and managed cloud options with hundreds of pre-built OAuth integrations, direct developer control over token vaults, custom sync scripts, and automatic refresh token management without locking teams into proprietary runtimes. (Near-tie with Composio; ranked first on the assumption that practitioners prioritize open-source self-hostability, raw token access, and broad API coverage over opinionated agent wrappers.)
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Gemini Offers open-source self-hosting and managed cloud options with hundreds of pre-built OAuth integrations, direct developer control over token vaults, custom sync scripts, and automatic refresh token management without locking teams into proprietary runtimes. (Near-tie with Composio; ranked first on the assumption that practitioners prioritize open-source self-hostability, raw token access, and broad API coverage over opinionated agent wrappers.)
Grok Open-source, fully self-hostable or BYOC credential layer covering 900+ APIs with complete OAuth/API-key lifecycle, server-side injection so tokens never leave the vault, white-label flows, and request-level OTel audit
GPT Best auth-focused and self-hostable foundation, with 900+ API definitions, multi-tenant connection handling, automatic refresh and failure detection, scoped API keys, credential-injecting proxy, strong observability, and unusually transparent pricing; especially strong when practitioners build their own tools
Claude The strongest open-source option — self-hostable managed OAuth with token refresh, per-connection credentials, and 400+ providers; the right pick when you need to own the data plane, avoid vendor lock-in, or keep tokens on your own infra.
Where it falls shortper GPT It leaves tool semantics, action approval, and agent policy enforcement largely to the application, while full self-hosted functionality requires an enterprise license and substantial infrastructure
per Claude It's integration/OAuth infrastructure, not an agent-native identity layer — no built-in agent authorization, human-in-the-loop consent, or fine-grained delegation; you build the agent-facing logic yourself.
per Gemini Lacks built-in agent runtime execution guardrails, prompt injection safety gates, or native MCP authorization policies, so it is not for teams wanting a turnkey, security-governed agent action sandbox out of the box.
per Grok More infrastructure than agent-native runtime; teams must implement their own per-action authorization and tool-safety policies on top
- 4GPT #5Claude #1Gemini #5Grok #4
The most complete delegated-token story for outbound agent calls — a managed Token Vault that stores and refreshes per-user third-party OAuth tokens, plus standards-based async human-in-the-loop approval (CIBA) and fine-grained authorization (FGA/RAR) so an agent can pause and get user consent mid-execution; backed by Okta's enterprise identity depth, audit, and compliance. Assumes the practitioner values standards and security posture over raw integration count.
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Claude The most complete delegated-token story for outbound agent calls — a managed Token Vault that stores and refreshes per-user third-party OAuth tokens, plus standards-based async human-in-the-loop approval (CIBA) and fine-grained authorization (FGA/RAR) so an agent can pause and get user consent mid-execution; backed by Okta's enterprise identity depth, audit, and compliance. Assumes the practitioner values standards and security posture over raw integration count.
Grok Mature Token Vault built on OAuth token exchange (RFC 8693) for secure delegated access, Agent as Principal for first-class agent identities with lifecycle and audit, plus enterprise-grade OIDC compliance and IdP trust
GPT Strongest fit for teams already using Auth0: hardened token custody, automatic refresh, scoped token exchange, established IAM controls, and a clean way for agents to call downstream APIs without receiving raw long-lived credentials
Gemini Enterprise-grade compliance (SOC 2, ISO, HIPAA) and robust implementation of standard OAuth 2.0 Token Exchange (RFC 8693) and Fine-Grained Authorization (FGA) for large enterprise identity stacks.
Where it falls shortper GPT Its prebuilt external-service coverage and execution layer are much narrower than specialist agent-integration platforms, making it poor value as a standalone cross-SaaS agent stack
per Claude Heaviest to adopt and priciest at scale; pulls you toward the Auth0/Okta ecosystem and is overkill for a solo dev wiring up a handful of tools.
per Gemini High cost, configuration complexity, and lack of agent-tailored SDKs or pre-built tool integration catalogs mean it is not for fast-moving startups wanting simple developer ergonomics.
per Grok Limited pre-built external OAuth providers in the vault and no native tool-execution runtime, so teams still own the agent-side orchestration
- 5GPT —Claude #3Gemini —Grok —
Covers both sides of agent identity — inbound (authenticating agents/MCP into your app) and outbound (vaulted delegated tokens for third-party APIs) — with visual auth flows and strong MCP support, giving a coherent single-vendor path for teams building agentic products.
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Claude Covers both sides of agent identity — inbound (authenticating agents/MCP into your app) and outbound (vaulted delegated tokens for third-party APIs) — with visual auth flows and strong MCP support, giving a coherent single-vendor path for teams building agentic products.
Where it falls shortper Claude Less mature outbound tooling and smaller mindshare than the leaders; you're betting on a platform still consolidating its agent feature set.
- 6GPT #3Claude —Gemini —Grok —
The strongest breadth-first option: managed authentication for roughly 3,000 APIs, many approved OAuth clients, 10,000+ ready actions, MCP support, user/environment isolation, custom API proxying, and mature workflow infrastructure; nearly tied with Composio and better when integration coverage dominates
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GPT The strongest breadth-first option: managed authentication for roughly 3,000 APIs, many approved OAuth clients, 10,000+ ready actions, MCP support, user/environment isolation, custom API proxying, and mature workflow infrastructure; nearly tied with Composio and better when integration coverage dominates
Where it falls shortper GPT It provides less agent-specific, per-action authorization governance, and its shared OAuth clients may request broader scopes than a narrowly configured custom client
- 7GPT —Claude —Gemini #4Grok —
Provides developer-first identity with Connected Apps and OAuth token vaulting, offering clean end-user consent flows, automatic token refresh, and reliable session isolation across web and agent interactions.
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Gemini Provides developer-first identity with Connected Apps and OAuth token vaulting, offering clean end-user consent flows, automatic token refresh, and reliable session isolation across web and agent interactions.
Where it falls shortper Gemini Focuses purely on identity and token vaulting rather than agent tool orchestration or MCP runtime execution, meaning it is not for teams seeking built-in tool registries or agent-level policy gates.
- 8GPT —Claude —Gemini —Grok #5
Pipes delivers managed OAuth connections with a token-proxy mode that keeps credentials out of agent environments plus session-scoped MCP access, while AuthKit acts as a standards-compliant OAuth authorization server supporting agent registration and OBO-style flows
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Grok Pipes delivers managed OAuth connections with a token-proxy mode that keeps credentials out of agent environments plus session-scoped MCP access, while AuthKit acts as a standards-compliant OAuth authorization server supporting agent registration and OBO-style flows
Where it falls shortper Grok Primarily an identity + connection layer rather than a full agent auth runtime or large tool catalog, requiring more custom work for execution and policy
By use case
How this board's leaders rank when the same four models are asked a more specific question.
| Product | This board | tool-use production AI | managed MCP connecting to SaaS tools |
|---|---|---|---|
| Arcade | #1 | #6 | #3 |
| Composio | #2 | #1 | #1 |
| Nango | #3 | #11 | #6 |
| Auth0 | #4 | — | — |
| Descope | #5 | — | — |
| Pipedream Connect | #6 | #8 | — |
Rank history
Just missed the top 5
GPT Scalekit Agent Actions — promising tenant-aware delegated OAuth and packaged actions, but newer and materially narrower than the leaders · Microsoft Entra Agent ID — excellent governed on-behalf-of access inside Microsoft 365 and Azure, but too ecosystem-specific for a general cross-SaaS ranking
Claude Stytch Connected Apps — excellent as an OAuth authorization server and MCP-native inbound auth — your app as the IdP — but leans inbound rather than vaulting third-party tokens for outbound delegated calls · WorkOS AuthKit + Connect — great B2B auth and SSO with growing agent/MCP support, but delegated outbound token custody isn't its core strength yet
Gemini Descope — strong CIAM with visual workflow orchestration and agent identity hubs, but lacks pre-packaged tool execution catalogs and agent-native tool registries · Keycloak — battle-tested open-source IAM supporting OAuth token exchange, but requires heavy custom implementation to build multi-tenant agent token vaulting and dynamic tool consent
Grok Merge — strong governed enterprise connectors and Agent Handler but less optimized for dynamic per-action agent tool-calling · Stytch — solid Connected Apps for agent consent and token management but narrower coverage and traction than the top five
By model
ChatGPT
- 1.Arcade
- 2.Composio
- 3.Pipedream Connect
- 4.Nango
- 5.Auth0
Claude
- 1.Auth0
- 2.Arcade
- 3.Descope
- 4.Composio
- 5.Nango
Gemini
- 1.Nango
- 2.Composio
- 3.Arcade
- 4.Stytch
- 5.Auth0
Grok
- 1.Arcade
- 2.Composio
- 3.Nango
- 4.Auth0
- 5.WorkOS
Common questions
What is the best delegated oauth platforms for agents acting on behalf of users according to AI models?
Arcade leads. 2 of 4 models rank Arcade the top pick. The current top 3: Arcade, Composio, Nango. Ranked by asking ChatGPT, Claude, Gemini, Grok the same buying question and merging their top-5 picks, updated 2026-08-10. Source: modelsagree.com.
Which delegated oauth platforms for agents acting on behalf of users did each AI model pick first?
ChatGPT: Arcade. Claude: Auth0. Gemini: Nango. Grok: Arcade.
Do the AI models agree on the best delegated oauth platforms for agents acting on behalf of users?
Not unanimous. Claude picks Auth0; Gemini picks Nango.
What changed in the latest delegated oauth platforms for agents acting on behalf of users ranking?
In the latest poll (2026-08-10): WorkOS entered the ranking. The models are re-polled on demand, so this ranking moves.
How is this delegated oauth platforms for agents acting on behalf of users ranking made?
ChatGPT, Claude, Gemini, Grok are each asked the same buying question in a fresh session with no system steering. Their top-5 answers are merged (rank 1 = 5 pts … rank 5 = 1 pt) into the consensus ranking, re-polled on demand and tracked over time.
More on how polling works: full methodology →
Cite this ranking
ModelsAgree, “Best delegated OAuth platforms for agents acting on behalf of users” — merged ranking from ChatGPT, Claude, Gemini & Grok, polled 2026-08-10. https://modelsagree.com/best/best-delegated-oauth-platforms-for-agents-acting-on-behalf-of-users (CC BY 4.0)
Tracked by ModelsAgree · rank 1 = 5 pts … rank 5 = 1 pt · re-polled on demand