Free AI SRE agents (2026)

AI SRE agents that you can use without paying: open-source projects plus tools with a free plan. Here are all 11 from the AgentScout directory.

Updated October 20, 2026

How we picked and ranked: tools are matched by category, the pricing each maker states and what each tool says it does. They are ranked by GitHub stars as recorded on each listing (link checks 2026-10-20); tools without a tracked repo follow, by listing maturity. No paid placements.

1. 

   1. OneUptime MCP

   MCP serversOpen source + cloud★ 7,751 GitHub stars

   OneUptime's official MCP server, giving agents access to monitors, incidents, on-call and status pages in this open-source observability platform. Free plan, paid plans from $22 per user, or self-host.

   Pricing (as stated): OneUptime free plan; paid plans from $22 per user/month; self-host free. · Mature

2. 

   2. Raven

   frameworksOpen source★ 5,518 GitHub stars

   Host agent that plans complex jobs as task graphs and coordinates built-in and third-party agents for research, coding, design and on-call work.

   Pricing (as stated): Open source · Mature

3. 

   3. kagent

   frameworksOpen source★ 4,035 GitHub stars

   Cloud-native framework for running AI agents on Kubernetes.

   Pricing (as stated): Open source · Active

4. 

   4. Radar

   MCP serversOpen source★ 3,826 GitHub stars

   Open-source Kubernetes UI with a built-in MCP server for agents.

   Pricing (as stated): Open source · Active

5. 

   5. HolmesGPT

   codingOpen source★ 3,616 GitHub stars

   CNCF sandbox SRE agent that investigates alerts and incidents.

   Pricing (as stated): Open source · Active

6. 

   6. Grafana MCP

   MCP serversOpen source★ 3,568 GitHub stars

   Grafana's MCP server giving agents access to dashboards, data sources and incidents.

   Pricing (as stated): Open source · Active

7. 

   7. Chaterm

   codingOpen source★ 3,095 GitHub stars

   Open-source AI terminal for deploying, troubleshooting and automating cloud infrastructure.

   Pricing (as stated): Open source · Active

8. 

   8. Terraform MCP Server

   MCP serversOpen source★ 1,550 GitHub stars

   HashiCorp's Terraform MCP server for looking up providers and modules and automating workflows.

   Pricing (as stated): Open source · Active

9. 

   9. Ongrid

   business agentsOpen source★ 1,194 GitHub stars

   An ops agent that learns your infrastructure, finds the root cause of incidents and helps fix them from the chat apps your team already uses.

   Pricing (as stated): Open source · Active

10. 

    10. Buildkite MCP

    MCP serversOpen source★ 54 GitHub stars

    Buildkite's MCP server exposing pipelines, builds, jobs and logs to coding agents.

    Pricing (as stated): Open source · Active

11. 

    11. wren-guard Pro

    security & governancePaid★ 0 GitHub stars

    wren-guard Pro is a TypeScript guard library for AI agents that hold or move funds on Base and other EVM chains (viem, CDP AgentKit, Privy, Eliza and similar stacks). It enforces allowlisted, capped and simulated sends, decodes calldata and signatures to flag unlimited approvals, Permit, Permit2, setApprovalForAll and EIP-7702 delegation, screens for injected instructions and watches nonces. It ships with an 89-scenario attack corpus drawn from public agent wallet incidents and a GitHub Action that fails CI if your agent's policy would let a known attack through. The original Python wren-guard is free and MIT licensed.

    Pricing (as stated): Paid: one-off digital download, pay what you want at $19, $49 or $99 in USDC on Base (same files at every price); $0.01 sample over x402; the original Python wren-guard is free (MIT) · Active

FAQ

What are the best free AI SRE agents?

Ranked by tracked GitHub stars, the top free AI SRE agents in our directory are OneUptime MCP, Raven, kagent, Radar, HolmesGPT. Stars measure popularity, not fit, so compare a few against your own task.

How many free AI SRE agents does AgentScout list?

11 tools match. This page shows the top 11. Pricing mix on this page: Open source (9), Open source + cloud (1), Paid (1).

Are these tools really free?

Pricing is what each maker states on their site. Open-source tools are free to self-host but may need a paid model API key or offer paid cloud plans; freemium tools have a free plan with limits. Check each official site.

Where can I see every tool for site reliability and incident response?

Our task page lists all 15 tools we match to site reliability and incident response.

Related: All tools for site reliability and incident response · MCP servers (5) · frameworks (2) · coding (2) · business agents (1)

By role: For DevOps and SRE engineers

All popular searches · AI agents by role · Free tools

Best-of lists: All best lists

Related categories: MCP servers

Facts come from our directory listings; pricing is as each maker states it and can change. Check official sites before you choose.