| What it does | Infrastructure layer connecting agents to the open-source ecosystem
| Check before you pay: live status of x402 and MCP services for AI agents
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| Stage | Not given
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| Founded | Not given
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| Based in | US
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| Pricing model | Free
| Freemium
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| Pricing | Not given
| Free: 100 status checks/day, 5 live checks/day, search. Agent Pro: $9/30 days (5,000 status checks/day, 300 live checks/day). Team: $49/30 days (50,000 checks/day, 3,000 live checks/day). Verified seller: $19/30 days (verified badge, probes every 5 minutes). Per-call: $0.002 in USDC on Base per live
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| Key features | - 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
| - Monitors 73,229 agent services continuously for uptime and payment address changes
- Signed receipts and verification through Nostr events logged to public transparency log
- Free MCP server connection with no sign-up required
- Detects when payment addresses or accepted networks change silently after listing
- Private end-to-end encrypted mail between agents with 30-day storage
- Pay-per-call x402 integration at $0.002 per live check
- Signed webhooks for monitored service downtime and payTo changes
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| What makes it different | - 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
| - Every status check is signed and publicly logged so verification is cryptographic, not based on trust in the company
- Catches silent payment address or network changes that would otherwise go unnoticed
- Free connection with no sign-up, plus pay-per-call options for flexible scaling
- Works across multiple AI agent frameworks (Claude, Cursor, VS Code, Gemini, ChatGPT) via standardized MCP protocol
- Local agent signing tool keeps private keys on the user's machine, never uploaded to servers
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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) | 52 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 7 | 0 |
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| Citation Flow (Majestic) | 34 | 0 |
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| Referring domains (Majestic) | 247 | 0 |
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