Composio

Data & ML Infrastructure8 vendorsUpdated Nov 10, 20264 added, 2 removed composio.dev Subprocessor list

Composio uses 8 subprocessors and infrastructure vendors, including AWS, OpenAI and Cloudflare, based on its public subprocessor list. Last checked Nov 10, 2026.

AI Stack · 3

Infrastructure · 5

AI Stack

Model Serving

OpenRouter

84 companies

AI model access and inference routing: Provides an API gateway for accessing third-party AI models and managing usage. When Composio sends prompts through OpenRouter, OpenRouter routes those requests to the selected model provider, which may also process the content. All requests are sent with zdr: true

Foundation Models

OpenAI

823 companies

LLM inferences: Processes prompts, reranking inputs, and embeddings where OpenAI models are selected or routed. We've *Disabled* sharing data for improving models and training on our data.

View their stack →

Code Execution

E2B

34 companies

Workbench Sessions: Provides isolated cloud sandboxes for executing customer-requested Python/bash workflows and processing temporary files/artifacts during Tool Router Workbench sessions.

Infrastructure

Cloud & Networking

AWS

1307 companies

Cloud infrastructure: Hosts and processes customer request data across AWS cloud infrastructure, including ECS Fargate, Lambda, RDS, S3, Secrets Manager, KMS, and related networking/security services.

Cloudflare

615 companies

DNS and Workers: Workers to delivers trigger payloads to customer webhooks; file upload relay downloads third-party files and writes them to R2 storage.

Vercel

233 companies

Serves APIs, Vercel AI for LLM routing: Backend processes all API requests via Vercel hosted service. Additionally, Vercel AI routes selected AI SDK model calls to configured model providers for workbench/runtime flows. We've enabled ZDR on Vercel.