| What it does | Physical mailing address and postal mail API for AI agents
| Infrastructure layer connecting agents to the open-source ecosystem
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| Stage | Not given
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| Founded | Not given
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| Based in | US
| US
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| Pricing model | Freemium
| Free
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| Pricing | Outbound mail: $0/month base, USPS First-Class Mail (1-page letter) $2.00, USPS Priority Mail flat-rate envelope $15.00, USPS Certified Mail $20.00, Certified with Electronic Return Receipt $24.00. Printing: B&W $0.40/page, Color $0.70/page. Mailing address for AI agent: $15/month, includes 30 stand
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| Key features | - Send outbound mail via API, MCP, or dashboard
- Certified mail with proof of delivery
- Inbound mail scanning and OCR
- REST API and MCP server integration
- Webhook notifications with HMAC-SHA256 signing
- Batch mail and postcards from templates
- Human-in-the-loop approval gates for mail
- Multi-channel notifications via email, SMS, Slack, Discord
- Fulfillment photos and tracking for all mail
| - Search code by keywords, API names, or quoted phrases across packages and repositories
- Read versioned source code at specific versions or git refs with symbol selectors
- Compare source changes between package versions or repository refs
- Check package health, adoption, license, downloads, and open advisories
- Inspect direct and transitive dependencies with resolved versions
- Check security vulnerabilities and affected versions for packages
- Generate code examples grounded in open-source projects with cited sources
- Ask research questions about packages with cited sources and read commands
- Browse documentation pages and search by keywords with exact page locations
- Review upgrade impacts including vulnerabilities, changelog, and dependency changes
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| What makes it different | - Real physical street address for autonomous agents to receive mail and packages
- Seamless API integration with AI agent frameworks like OpenClaw, Hermes, LangChain
- Inbound mail becomes structured agentic context via OCR and webhooks
- Complete tracking from document submission through delivery confirmation
- No credit card required to start using the service
| - Version-aware indexing ensures agents get code and documentation matching their exact dependency versions, not latest releases
- Integrated index of code, documentation, packages, and dependency graphs in one interface through MCP, CLI, and API
- Deterministic results with exact file locations, line ranges, and symbol definitions for reliable agent decisions
- Supports open-source repositories not published as packages plus major package registries like npm, PyPI, and crates.io
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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) | 22 ● no change since last check | 52 ● no change since last check |
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| Trust Flow (Majestic) | 1 | 7 |
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| Citation Flow (Majestic) | 26 | 34 |
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| Referring domains (Majestic) | 76 | 247 |
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