Agent Infrastructure
The Agent Infrastructure segment of the agent economy: 38 companies, ranked by X followers.
| Company | Headcount | HC 3m | Traffic/mo | X followers | Last round | Category |
|---|---|---|---|---|---|---|
| Cloudflare (Agents) Developer platform with Agents SDK and remote MCP hosting | 7,317 | ▼ -15.4% | 152.8M | 326.3K | — | Agent Infrastructure |
| OpenRouter Unified API for hundreds of LLMs | 122 | ▲ 40.2% | 36.1M | 157.7K | $113M Series B | Agent Infrastructure |
| Firecrawl Building the library for superintelligence. | 62 | ▲ 18.4% | 2.2M | 95.8K | $75M Series B | Agent Infrastructure |
| Exa Web search API built for AI agents | 243 | ▲ 30.5% | 915.1K | 66.4K | $250M Series C | Agent Infrastructure |
| Modal Serverless AI infrastructure with sandboxes | 256 | ▲ 27.7% | 1.7M | 40.4K | $750M Series D | Agent Infrastructure |
| Pinecone Vector database for AI applications | 138 | ■ 0.0% | 450.7K | 27.8K | $100M Series B | Agent Infrastructure |
| Mercor Marketplace of human experts powering frontier AI training and evals | 13K | ▲ 40.0% | 10.2M | 27.1K | $350M Series C | Agent Infrastructure |
| Composio Tool integrations and auth for AI agents | 93 | ▲ 13.6% | 3.4M | 26.1K | — Series A | Agent Infrastructure |
| Parallel Web Systems Web search and research APIs for AI agents | 145 | ▲ 25.2% | 202.6K | 25K | $100M Series B | Agent Infrastructure |
| Apify Web scraping platform and actors for AI agents | 274 | ▲ 11.5% | 9.1M | 21.6K | $3M Seed | Agent Infrastructure |
| Mem0 The Memory layer for AI Agents | 26 | ▲ 22.7% | 143.9K | 20.7K | $24M Seed and Series A | Agent Infrastructure |
| E2B Open-source cloud sandboxes for AI agents | 55 | ▲ 20.4% | 127.8K | 15.9K | $21M Series A | Agent Infrastructure |
| Daytona Secure infrastructure for running AI-generated code | — | — | — | 15.2K | — | Agent Infrastructure |
| AgentMail Email Inboxes for AI Agents | 13 | ▲ 20.0% | 311.9K | 14.6K | $6M Seed | Agent Infrastructure |
| Airbyte Context layer for production-grade AI agents | 116 | ▼ -5.1% | 179.1K | 14.2K | $150M Series B | Agent Infrastructure |
| Reducto The complete agentic document platform | 99 | ▲ 24.4% | 40.5K | 12.7K | — Series B | Agent Infrastructure |
| Temporal Durable execution platform used to run reliable agents | 657 | ▲ 13.8% | 601K | 12K | $300M Series D | Agent Infrastructure |
| Tavily Search API for AI agents and RAG | 125 | ▲ 17.6% | 1.3M | 6,820 | $25M Series A | Agent Infrastructure |
| Inngest Durable workflows and AgentKit for AI agents | 28 | ■ 0.0% | 148.7K | 6,219 | $21M Series A | Agent Infrastructure |
| Tiptap The open-source document editor for humans and AI agents. | 19 | ▲ 5.5% | 208.8K | 5,879 | $2.6M Series Seed | Agent Infrastructure |
| Rivet The orchestrator for agentic workloads. | 7 | ▲ 20.0% | 5,914 | 5,734 | — Later Stage VC | Agent Infrastructure |
| Reworkd The simplest way to extract web data at scale | 6 | ▼ -16.7% | 55.6K | 4,736 | $2.8M Seed | Agent Infrastructure |
| Context.dev Web data API for agents | 7 | ▲ 100.0% | 146.2K | 4,052 | $9M Seed | Agent Infrastructure |
| Dedalus Labs Persistent computers for AI agents | 15 | ▼ -20.0% | 15.8K | 2,777 | $11M Seed | Agent Infrastructure |
| Trigger.dev Build and deploy fully‑managed AI agents and workflows | 17 | ■ 0.0% | 168.7K | 2,624 | $16M Series A | Agent Infrastructure |
| Zep Context engineering and memory for agents | 10 | ▲ 11.1% | 55.3K | 2,438 | — | Agent Infrastructure |
| Arcade.dev Tool-calling platform with auth for agents | 51 | ▲ 26.3% | 37.7K | 1,112 | — Funding round (lead: SYN Ventures) | Agent Infrastructure |
| Airweave The open-source context retrieval layer for agents | — | — | — | 781 | — | Agent Infrastructure |
| Signadot Scalable validation infrastructure for AI agents | 11 | ■ 0.0% | 14.4K | 574 | — Funding round (lead: Redpoint Ventures) | Agent Infrastructure |
| Polymath Simulation environments to train & evaluate long-horizon AI agents | 8 | ▲ 14.3% | 7,424 | 306 | $500K Seed | Agent Infrastructure |
| Osmosis Reinforcement Learning (RL) for AI Agents | 8 | ▼ -18.2% | 1,684 | — | $6.3M Seed | Agent Infrastructure |
| Anakin One API to get clean data from any website for your AI agents at scale | 160 | ▲ 12.8% | 23.1K | — | $2M Seed | Agent Infrastructure |
| Bright Data Web data platform with infrastructure for AI agents | — | — | — | — | — | Agent Infrastructure |
| Smithery Registry and hosting for MCP servers (site says now part of Arcade) | 1 | ▼ -80.0% | 177.3K | — | — | Agent Infrastructure |
| Ressl AI Train, eval and build autonomous agents | 6 | ▲ 20.0% | 2,080 | — | $500K Pre-Seed | Agent Infrastructure |
| InstaBox Cloud computers for AI agents | — | — | — | — | — | Agent Infrastructure |
| Freestyle The most powerful sandboxes for AI Agents | 4 | ■ 0.0% | 324.7K | — | — | Agent Infrastructure |
| Vesence The Agent-Native Computer | 13 | ▲ 20.0% | 15K | — | $9M Seed | Agent Infrastructure |
Developer platform with Agents SDK and remote MCP hosting
- HC
- 7,317
- 3m
- ▼ -15.4%
- X
- 326.3K
Unified API for hundreds of LLMs
- HC
- 122
- 3m
- ▲ 40.2%
- X
- 157.7K
Building the library for superintelligence.
- HC
- 62
- 3m
- ▲ 18.4%
- X
- 95.8K
Web search API built for AI agents
- HC
- 243
- 3m
- ▲ 30.5%
- X
- 66.4K
Serverless AI infrastructure with sandboxes
- HC
- 256
- 3m
- ▲ 27.7%
- X
- 40.4K
Vector database for AI applications
- HC
- 138
- 3m
- ■ 0.0%
- X
- 27.8K
Marketplace of human experts powering frontier AI training and evals
- HC
- 13K
- 3m
- ▲ 40.0%
- X
- 27.1K
Tool integrations and auth for AI agents
- HC
- 93
- 3m
- ▲ 13.6%
- X
- 26.1K
Web search and research APIs for AI agents
- HC
- 145
- 3m
- ▲ 25.2%
- X
- 25K
Web scraping platform and actors for AI agents
- HC
- 274
- 3m
- ▲ 11.5%
- X
- 21.6K
The Memory layer for AI Agents
- HC
- 26
- 3m
- ▲ 22.7%
- X
- 20.7K
Open-source cloud sandboxes for AI agents
- HC
- 55
- 3m
- ▲ 20.4%
- X
- 15.9K
Secure infrastructure for running AI-generated code
- HC
- —
- 3m
- —
- X
- 15.2K
Email Inboxes for AI Agents
- HC
- 13
- 3m
- ▲ 20.0%
- X
- 14.6K
Context layer for production-grade AI agents
- HC
- 116
- 3m
- ▼ -5.1%
- X
- 14.2K
The complete agentic document platform
- HC
- 99
- 3m
- ▲ 24.4%
- X
- 12.7K
Durable execution platform used to run reliable agents
- HC
- 657
- 3m
- ▲ 13.8%
- X
- 12K
Search API for AI agents and RAG
- HC
- 125
- 3m
- ▲ 17.6%
- X
- 6,820
Durable workflows and AgentKit for AI agents
- HC
- 28
- 3m
- ■ 0.0%
- X
- 6,219
The open-source document editor for humans and AI agents.
- HC
- 19
- 3m
- ▲ 5.5%
- X
- 5,879
The orchestrator for agentic workloads.
- HC
- 7
- 3m
- ▲ 20.0%
- X
- 5,734
The simplest way to extract web data at scale
- HC
- 6
- 3m
- ▼ -16.7%
- X
- 4,736
Web data API for agents
- HC
- 7
- 3m
- ▲ 100.0%
- X
- 4,052
Persistent computers for AI agents
- HC
- 15
- 3m
- ▼ -20.0%
- X
- 2,777
Build and deploy fully‑managed AI agents and workflows
- HC
- 17
- 3m
- ■ 0.0%
- X
- 2,624
Context engineering and memory for agents
- HC
- 10
- 3m
- ▲ 11.1%
- X
- 2,438
Tool-calling platform with auth for agents
- HC
- 51
- 3m
- ▲ 26.3%
- X
- 1,112
The open-source context retrieval layer for agents
- HC
- —
- 3m
- —
- X
- 781
Scalable validation infrastructure for AI agents
- HC
- 11
- 3m
- ■ 0.0%
- X
- 574
Simulation environments to train & evaluate long-horizon AI agents
- HC
- 8
- 3m
- ▲ 14.3%
- X
- 306
Reinforcement Learning (RL) for AI Agents
- HC
- 8
- 3m
- ▼ -18.2%
- X
- —
One API to get clean data from any website for your AI agents at scale
- HC
- 160
- 3m
- ▲ 12.8%
- X
- —
Web data platform with infrastructure for AI agents
- HC
- —
- 3m
- —
- X
- —
Registry and hosting for MCP servers (site says now part of Arcade)
- HC
- 1
- 3m
- ▼ -80.0%
- X
- —
Train, eval and build autonomous agents
- HC
- 6
- 3m
- ▲ 20.0%
- X
- —
Cloud computers for AI agents
- HC
- —
- 3m
- —
- X
- —
The most powerful sandboxes for AI Agents
- HC
- 4
- 3m
- ■ 0.0%
- X
- —
The Agent-Native Computer
- HC
- 13
- 3m
- ▲ 20.0%
- X
- —
Top movers in category
- Context.dev▲ 100.0%
- OpenRouter▲ 40.2%
- Mercor▲ 40.0%
- Exa▲ 30.5%
- Modal▲ 27.7%
FAQ
What are Agent Infrastructure AI agents?+
Agent Infrastructure covers companies building autonomous or semi-autonomous AI agents for this use case. We currently track 38 of them.
How is the Agent Infrastructure list ranked?+
By default by X followers. Headcount growth comes from Clay enrichment; social metrics from the public X API. Missing data is shown as —.
How often is this updated?+
Weekly. Each company profile shows its own last-verified date.