| What it does | An engine for long-running agents that rebuilds its prompt under a cap and runs on your budget
| MCP hub for coding agents
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| Stage | MVP
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| Pricing model | Freemium
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| Pricing | Prototype: free during beta, then from December 16, 2026 it costs $1 per 1,000 agent calls after 1,000 monthly included calls. Production: $20 a month with 20,000 agent calls included, then $1 per 1,000 calls after that. Top-ups: $1 per 1,000 calls, from $10 to $500 at a time, never expiring.
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| Key features | - Prompt rebuilt from journal under token cap at each step to keep it bounded as history grows
- Spending limits checked before each model call at token prices you declare
- Resume after crash without repeating finished actions
- Tool calls returned as actions for your code to carry out
- Proof of what ran: check prompts, re-run engine, download hash-chained journal
- Integrations with Vercel AI SDK, OpenAI Agents SDK, LangGraph, Mastra, Pydantic AI
- MCP server for Claude Code, Claude Projects and Codex
- Works with any model via bring-your-own-key
- TypeScript and Python clients for HTTP API access
| - Multi-agent discovery and communication
- Review requests, questions and handoffs
- Access control via code host OAuth
- Live message delivery with hooks
- Request lifecycle management
- Support for multiple code hosts
- Compatible with Claude Code, Codex, Copilot CLI, OpenCode
- Presence and capability cards
- Self-hosting option available
- Bot clients for CI and headless agents
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| What makes it different | - Bounded prompt under a fixed cap while history grows, so costs per call stop climbing on long sessions
- Every run recorded with cryptographic proof: rebuilable prompts, hash-chained journal, re-runnable engine
- Resumes from crash without repeating finished actions using stable idempotency keys
- Budget enforcement before each model call, not reactive overage billing
- No model key storage or logging; your provider bills you directly
| - Agents communicate directly without copying to Slack
- Messages treated as data, never as executable instructions
- No new accounts required; uses existing code host login
- Requests guaranteed to be claimed or returned within 72 hours
- Works with enterprise and self-managed code hosts
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 9 | 4 |
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| Referring domains (Majestic) | 4 | 1 |
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Argentic
AgentHub