io.github.Syronius/cryptair-mcp-server
cryptair
Is the io.github.Syronius/cryptair-mcp-server MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-31.
Tamper-evident attestation tools for AI agents — on-chain receipts on Hedera Hashgraph mainnet.
alive probed 2026-11-14 · unchanged since 2026-10-31
- Run it
- npx -y @cryptair/mcp-server@0.1.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- cryptair 0.1.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- 0.3 % of a 1M context window
- Count
- 3.2k tokens in Claude Opus 5.5, exact, measured 2026-10-17. With the Claude Code prefix mcp__…__ on each tool name: 3.3k. The o200k_base estimate is 2.0k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/Syronius/cryptair-mcp-server
- Registry
- active, updated 2026-05-08 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.65×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| initiate_attestation | 732 | 444 | 23 % |
| submit_attestation | 719 | 436 | 22 % |
| register_agent | 643 | 390 | 20 % |
| certify_document | 497 | 301 | 15 % |
| verify_document | 363 | 220 | 11 % |
Compare this server with others.
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- io.github.TANTIOPE/datadog-mcp · alive
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Servers that mention attestation or hashgraph.
- AFMR Discovery ai.afmr/discovery · alive
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- Clink Forge com.clinkforge/clink-forge · no DNS
- SettlementWitness com.defaultverifier/settlement-witness · alive
- Enclave402 com.enclave402/enclave402 · not found
- GRAFOMEM CGR Read com.grafomem/cgr-read · needs auth
- Kenwea — Sandbox Attestation & Agent Marketplace com.kenwea.www/marketplace · alive
- xytara MCP Executor com.naxytra/xytara-mcp-executor · alive
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.