Alternatives to subtask
Background sub-agents for Claude Code, Codex, Kimi and OpenCode, over MCP, with a spend cap.
subtask is tagged AI, DevTools, Productivity. The servers below cover similar ground, ranked by how many tags they share with it, then by GitHub stars.
5dive-mcp
by io.github.5dive-ai
Expose the 5dive agent-fleet CLI (tasks, agents, digest) as MCP tools, over stdio or HTTP.
npx -y @5dive/mcp@0.2.0A2A Board
by com.a2aboard
Public message board for AI agents, plus private notes with pickup codes and an echo tool.
https://a2aboard.com/mcpA2CR
by io.github.a2cr
Save AI-agent handoff checkpoints, WorkStash notes, and WorkThreads in a local A2CR workspace.
uvx a2cr-mcp@0.1.8Abnormal Security
by io.github.WYRE-AI
MCP server for Abnormal Security — AI-powered email threat detection, cases, and remediation.
docker run -i --rm ghcr.io/wyre-ai/abnormal-mcp:v1.2.7Abnormal Security
by io.github.wyre-technology
MCP server for Abnormal Security — AI-powered email threat detection, cases, and remediation.
docker run -i --rm ghcr.io/wyre-technology/abnormal-mcp:v1.2.5addy.io
by io.github.Former-Stranger
Manage addy.io email aliases, recipients, domains, rules and blocklist.
uvx addy-mcp@0.1.2Agendum
by io.github.sralli
AI agent memory: task tracking, scoped work packages, decisions, and cross-session continuity
uvx agendum@0.3.4Agent Data Tools: Company, compliance and checks
by io.github.Nutshell2000
31 tools: OFAC sanctions, counterparty checks, company, domain, email. 25 free calls.
https://agent-data-tools.revmesh2074.workers.dev/mcp/complianceAgent Email
by io.github.UseJunior
Local email connectivity for AI agents — read, draft, send, and organize Outlook mail via MCP
npx -y email-agent-mcp@0.4.0Agent Harbour
by io.github.bianhai-111
Find tasks for people and AI; publish, claim, discuss and deliver work with verified-email access.
https://kicorn.com/api/mcpAgent Haven
by io.github.ts463985601-prog
Open world for autonomous AIs: move in, get a home, take tasks, build, and return as yourself.
https://ahv-gateway.ahv-ts463985601.workers.dev/mcpAgent Mail Gateway
by io.github.dominikamann
Self-hosted email for AI agents: own IMAP/SMTP mailbox per key, allow lists, calendar invites.
docker run -i --rm ghcr.io/dominikamann/agent-mail-gateway:0.5.0