Xpersona

Crawler Summary

@chainbound/cryo-mcp-server answer-first brief

Cryo MCP server with Zap Cryo MCP (with Payflow) $1 Cryo MCP is an $1 that allows you to extensively query blockchain data in natural language, powered by $1 and $1. We host a remote MCP server at $1 that you can use to test it out. It is connected to a Reth archive node and has access to all datasets that Cryo provides: It is also a demonstration of how to use $1 to integrate micropayments into your MCP server. To use it, you need to have a Published capability contract available. No trust telemetry is available yet. 8 GitHub stars reported by the source. Last updated 2/24/2026.

Freshness

Last checked 2/22/2026

Best For

Contract is available with explicit auth and schema references.

Not Ideal For

@chainbound/cryo-mcp-server is not ideal for teams that need stronger public trust telemetry, lower setup complexity, or more explicit contract coverage before production rollout.

Evidence Sources Checked

editorial-content, capability-contract, runtime-metrics, public facts pack

CardFactsSnapshotContractTrust
Claim this agent
Agent DossierGitHubSafety: 93/100

@chainbound/cryo-mcp-server

Cryo MCP server with Zap Cryo MCP (with Payflow) $1 Cryo MCP is an $1 that allows you to extensively query blockchain data in natural language, powered by $1 and $1. We host a remote MCP server at $1 that you can use to test it out. It is connected to a Reth archive node and has access to all datasets that Cryo provides: It is also a demonstration of how to use $1 to integrate micropayments into your MCP server. To use it, you need to have a

MCPverified

Public facts

7

Change events

1

Artifacts

0

Freshness

Feb 22, 2026

Verifiededitorial-content1 verified compatibility signal8 GitHub stars

Published capability contract available. No trust telemetry is available yet. 8 GitHub stars reported by the source. Last updated 2/24/2026.

8 GitHub starsSchema refs publishedTrust evidence available

Trust score

Unknown

Compatibility

MCP

Freshness

Feb 22, 2026

Vendor

Chainbound

Artifacts

0

Benchmarks

0

Last release

0.0.1

Executive Summary

Key links, install path, and a quick operational read before the deeper crawl record.

Verifiededitorial-content

Summary

Published capability contract available. No trust telemetry is available yet. 8 GitHub stars reported by the source. Last updated 2/24/2026.

View Source

Setup snapshot

git clone https://github.com/chainbound/cryo-mcp.git
  1. 1

    Setup complexity is MEDIUM. Standard integration tests and API key provisioning are required before connecting this to production workloads.

  2. 2

    Final validation: Expose the agent to a mock request payload inside a sandbox and trace the network egress before allowing access to real customer data.

Evidence Ledger

Everything public we have scraped or crawled about this agent, grouped by evidence type with provenance.

Verifiededitorial-content
Vendor (1)

Vendor

Chainbound

profilemedium
Observed Feb 24, 2026Source linkProvenance
Compatibility (2)

Protocol compatibility

MCP

contracthigh
Observed Feb 24, 2026Source linkProvenance

Auth modes

mcp, api_key

contracthigh
Observed Feb 24, 2026Source linkProvenance
Artifact (1)

Machine-readable schemas

OpenAPI or schema references published

contracthigh
Observed Feb 24, 2026Source linkProvenance
Adoption (1)

Adoption signal

8 GitHub stars

profilemedium
Observed Feb 24, 2026Source linkProvenance
Security (1)

Handshake status

UNKNOWN

trustmedium
Observed unknownSource linkProvenance
Integration (1)

Crawlable docs

6 indexed pages on the official domain

search_documentmedium
Observed Apr 15, 2026Source linkProvenance

Release & Crawl Timeline

Merged public release, docs, artifact, benchmark, pricing, and trust refresh events.

Self-declaredagent-index

Docs Update

Docs refreshed: Sign in to GitHub · GitHub

search_documentmedium

Fresh crawlable documentation was indexed for the official domain.

Observed Apr 15, 2026

Artifacts Archive

Extracted files, examples, snippets, parameters, dependencies, permissions, and artifact metadata.

Self-declaredGITHUB MCP

Extracted files

0

Examples

3

Snippets

0

Languages

typescript

Executable Examples

text

cryo datasets
─────────────
- address_appearances
- balance_diffs
- balance_reads
- balances
- blocks
- code_diffs
- code_reads
- codes
- contracts
- erc20_balances
- erc20_metadata
- erc20_supplies
- erc20_transfers
- erc721_metadata
- erc721_transfers
- eth_calls
- four_byte_counts (alias = 4byte_counts)
- geth_calls
- geth_code_diffs
- geth_balance_diffs
- geth_storage_diffs
- geth_nonce_diffs
- geth_opcodes
- javascript_traces (alias = js_traces)
- logs (alias = events)
- native_transfers
- nonce_diffs
- nonce_reads
- nonces
- slots (alias = storages)
- storage_diffs (alias = slot_diffs)
- storage_reads (alias = slot_reads)
- traces
- trace_calls
- transactions (alias = txs)
- vm_traces (alias = opcode_traces)

json

{
  "mcpServers": {
    "cryo": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "https://cryo-mcp.fly.dev/v1/mcp",
        "--header",
        "Authorization: test",
        "--transport",
        "http-only"
      ]
    },
    "payflow": {
      "command": "npx",
      "args": ["@chainbound/payflow-mcp"],
      "env": {
        "PRIVATE_KEY": "",
        // Set your max payment amount in USDC per tool call
        "MAX_PAYMENT_AMOUNT_USDC": "10",
        // Enable debug logging
        "DEBUG": "payflow:*"
      }
    }
  }
}

mermaid

sequenceDiagram
    box Grey Local
    participant Claude
    participant Payflow MCP
    end
    box Purple Remote
    participant Cryo MCP
    participant Facilitator
    end
    Claude->>+Cryo MCP: get_tool_details
    Cryo MCP -->>-Claude: details
    Claude->>Claude: evaluate_details
    alt proceed
        Claude->>+Payflow MCP: generate_payment
        Payflow MCP->>-Claude: payment_details
        Claude->>+Cryo MCP: tool_call, payment
        Cryo MCP->>+Facilitator: verify and settle
        Facilitator->>-Cryo MCP: response (success)
        Cryo MCP->>-Claude: tool_result
        Claude->>Claude: process & present result to user
    end

Docs & README

Full documentation captured from public sources, including the complete README when available.

Self-declaredGITHUB MCP

Docs source

GITHUB MCP

Editorial quality

ready

Cryo MCP server with Zap Cryo MCP (with Payflow) $1 Cryo MCP is an $1 that allows you to extensively query blockchain data in natural language, powered by $1 and $1. We host a remote MCP server at $1 that you can use to test it out. It is connected to a Reth archive node and has access to all datasets that Cryo provides: It is also a demonstration of how to use $1 to integrate micropayments into your MCP server. To use it, you need to have a

Full README

Cryo MCP (with Payflow)

Button Icon

Cryo MCP is an MCP server that allows you to extensively query blockchain data in natural language, powered by Cryo and Reth.

We host a remote MCP server at https://cryo-mcp.fly.dev/v1/mcp that you can use to test it out. It is connected to a Reth archive node and has access to all datasets that Cryo provides:

cryo datasets
─────────────
- address_appearances
- balance_diffs
- balance_reads
- balances
- blocks
- code_diffs
- code_reads
- codes
- contracts
- erc20_balances
- erc20_metadata
- erc20_supplies
- erc20_transfers
- erc721_metadata
- erc721_transfers
- eth_calls
- four_byte_counts (alias = 4byte_counts)
- geth_calls
- geth_code_diffs
- geth_balance_diffs
- geth_storage_diffs
- geth_nonce_diffs
- geth_opcodes
- javascript_traces (alias = js_traces)
- logs (alias = events)
- native_transfers
- nonce_diffs
- nonce_reads
- nonces
- slots (alias = storages)
- storage_diffs (alias = slot_diffs)
- storage_reads (alias = slot_reads)
- traces
- trace_calls
- transactions (alias = txs)
- vm_traces (alias = opcode_traces)

It is also a demonstration of how to use payflow to integrate micropayments into your MCP server. To use it, you need to have a local payflow MCP server running that can create the payments for the paid tools.

Claude Desktop Quickstart

  1. Press cmd+, in Claude Desktop to open the settings
  2. Go to the Developer tab
  3. Click edit config and open the claude_desktop_config.json file
  4. Add the cryo server to the mcpServers object:
  5. Add the payflow server to the mcpServers object, with the correct configuration:
{
  "mcpServers": {
    "cryo": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "https://cryo-mcp.fly.dev/v1/mcp",
        "--header",
        "Authorization: test",
        "--transport",
        "http-only"
      ]
    },
    "payflow": {
      "command": "npx",
      "args": ["@chainbound/payflow-mcp"],
      "env": {
        "PRIVATE_KEY": "",
        // Set your max payment amount in USDC per tool call
        "MAX_PAYMENT_AMOUNT_USDC": "10",
        // Enable debug logging
        "DEBUG": "payflow:*"
      }
    }
  }
}

Paid Tools

Only the dataset generation (query_dataset) tool is paid, using Coinbase x402 through the payflow-sdk package. It currently costs 0.05 USDC and is payable on Base. The MCP server uses the facilitator hosted by Coinbase to settle the payments.

Limits

We limit the number of blocks per query to 10,000. If your agent needs more data, you can use the query_dataset tool multiple times with multiple payments.

Sequence Diagram

sequenceDiagram
    box Grey Local
    participant Claude
    participant Payflow MCP
    end
    box Purple Remote
    participant Cryo MCP
    participant Facilitator
    end
    Claude->>+Cryo MCP: get_tool_details
    Cryo MCP -->>-Claude: details
    Claude->>Claude: evaluate_details
    alt proceed
        Claude->>+Payflow MCP: generate_payment
        Payflow MCP->>-Claude: payment_details
        Claude->>+Cryo MCP: tool_call, payment
        Cryo MCP->>+Facilitator: verify and settle
        Facilitator->>-Cryo MCP: response (success)
        Cryo MCP->>-Claude: tool_result
        Claude->>Claude: process & present result to user
    end

Contract & API

Machine endpoints, protocol fit, contract coverage, invocation examples, and guardrails for agent-to-agent use.

Verifiedcapability-contract

Endpoints

Dossier APISnapshot APIContract APITrust API

Contract coverage

Status

ready

Auth

mcp, api_key

Streaming

No

Data region

global

Protocol support

MCP: verified

Requires: mcp, lang:typescript

Forbidden: none

Guardrails

Operational confidence: medium

Contract is available with explicit auth and schema references.
Trust confidence is not low and verification freshness is acceptable.
Protocol support is explicitly confirmed in contract metadata.
Invocation examples
curl -s "https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/snapshot"
curl -s "https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/contract"
curl -s "https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/trust"

Reliability & Benchmarks

Trust and runtime signals, benchmark suites, failure patterns, and practical risk constraints.

Missingruntime-metrics

Trust signals

Handshake

UNKNOWN

Confidence

unknown

Attempts 30d

unknown

Fallback rate

unknown

Runtime metrics

Observed P50

unknown

Observed P95

unknown

Rate limit

unknown

Estimated cost

unknown

No benchmark suites or observed failure patterns are available.

Media & Demo

Every public screenshot, visual asset, demo link, and owner-provided destination tied to this agent.

Missingno-media
No screenshots, media assets, or demo links are available.

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Machine Appendix

Contract JSON

{
  "contractStatus": "ready",
  "authModes": [
    "mcp",
    "api_key"
  ],
  "requires": [
    "mcp",
    "lang:typescript"
  ],
  "forbidden": [],
  "supportsMcp": true,
  "supportsA2a": false,
  "supportsStreaming": false,
  "inputSchemaRef": "https://github.com/chainbound/cryo-mcp#input",
  "outputSchemaRef": "https://github.com/chainbound/cryo-mcp#output",
  "dataRegion": "global",
  "contractUpdatedAt": "2026-02-24T19:45:03.999Z",
  "sourceUpdatedAt": "2026-02-24T19:45:03.999Z",
  "freshnessSeconds": 19554170
}

Invocation Guide

{
  "preferredApi": {
    "snapshotUrl": "https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/snapshot",
    "contractUrl": "https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/contract",
    "trustUrl": "https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/trust"
  },
  "curlExamples": [
    "curl -s \"https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/snapshot\"",
    "curl -s \"https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/contract\"",
    "curl -s \"https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/trust\""
  ],
  "jsonRequestTemplate": {
    "query": "summarize this repo",
    "constraints": {
      "maxLatencyMs": 2000,
      "protocolPreference": [
        "MCP"
      ]
    }
  },
  "jsonResponseTemplate": {
    "ok": true,
    "result": {
      "summary": "...",
      "confidence": 0.9
    },
    "meta": {
      "source": "GITHUB_MCP",
      "generatedAt": "2026-10-09T03:27:54.342Z"
    }
  },
  "retryPolicy": {
    "maxAttempts": 3,
    "backoffMs": [
      500,
      1500,
      3500
    ],
    "retryableConditions": [
      "HTTP_429",
      "HTTP_503",
      "NETWORK_TIMEOUT"
    ]
  }
}

Trust JSON

{
  "status": "unavailable",
  "handshakeStatus": "UNKNOWN",
  "verificationFreshnessHours": null,
  "reputationScore": null,
  "p95LatencyMs": null,
  "successRate30d": null,
  "fallbackRate": null,
  "attempts30d": null,
  "trustUpdatedAt": null,
  "trustConfidence": "unknown",
  "sourceUpdatedAt": null,
  "freshnessSeconds": null
}

Capability Matrix

{
  "rows": [
    {
      "key": "MCP",
      "type": "protocol",
      "support": "supported",
      "confidenceSource": "contract",
      "notes": "Confirmed by capability contract"
    },
    {
      "key": "mcp",
      "type": "capability",
      "support": "supported",
      "confidenceSource": "profile",
      "notes": "Declared in agent profile metadata"
    },
    {
      "key": "blockchain",
      "type": "capability",
      "support": "supported",
      "confidenceSource": "profile",
      "notes": "Declared in agent profile metadata"
    },
    {
      "key": "evm",
      "type": "capability",
      "support": "supported",
      "confidenceSource": "profile",
      "notes": "Declared in agent profile metadata"
    },
    {
      "key": "ethereum",
      "type": "capability",
      "support": "supported",
      "confidenceSource": "profile",
      "notes": "Declared in agent profile metadata"
    },
    {
      "key": "x402",
      "type": "capability",
      "support": "supported",
      "confidenceSource": "profile",
      "notes": "Declared in agent profile metadata"
    },
    {
      "key": "micropayments",
      "type": "capability",
      "support": "supported",
      "confidenceSource": "profile",
      "notes": "Declared in agent profile metadata"
    },
    {
      "key": "zap",
      "type": "capability",
      "support": "supported",
      "confidenceSource": "profile",
      "notes": "Declared in agent profile metadata"
    }
  ],
  "flattenedTokens": "protocol:MCP|supported|contract capability:mcp|supported|profile capability:blockchain|supported|profile capability:evm|supported|profile capability:ethereum|supported|profile capability:x402|supported|profile capability:micropayments|supported|profile capability:zap|supported|profile"
}

Facts JSON

[
  {
    "factKey": "docs_crawl",
    "category": "integration",
    "label": "Crawlable docs",
    "value": "6 indexed pages on the official domain",
    "href": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceUrl": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceType": "search_document",
    "confidence": "medium",
    "observedAt": "2026-04-15T05:03:46.393Z",
    "isPublic": true
  },
  {
    "factKey": "protocols",
    "category": "compatibility",
    "label": "Protocol compatibility",
    "value": "MCP",
    "href": "https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/contract",
    "sourceUrl": "https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/contract",
    "sourceType": "contract",
    "confidence": "high",
    "observedAt": "2026-02-24T19:45:03.999Z",
    "isPublic": true
  },
  {
    "factKey": "auth_modes",
    "category": "compatibility",
    "label": "Auth modes",
    "value": "mcp, api_key",
    "href": "https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/contract",
    "sourceUrl": "https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/contract",
    "sourceType": "contract",
    "confidence": "high",
    "observedAt": "2026-02-24T19:45:03.999Z",
    "isPublic": true
  },
  {
    "factKey": "schema_refs",
    "category": "artifact",
    "label": "Machine-readable schemas",
    "value": "OpenAPI or schema references published",
    "href": "https://github.com/chainbound/cryo-mcp#input",
    "sourceUrl": "https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/contract",
    "sourceType": "contract",
    "confidence": "high",
    "observedAt": "2026-02-24T19:45:03.999Z",
    "isPublic": true
  },
  {
    "factKey": "vendor",
    "category": "vendor",
    "label": "Vendor",
    "value": "Chainbound",
    "href": "https://github.com/chainbound/cryo-mcp",
    "sourceUrl": "https://github.com/chainbound/cryo-mcp",
    "sourceType": "profile",
    "confidence": "medium",
    "observedAt": "2026-02-24T19:43:14.176Z",
    "isPublic": true
  },
  {
    "factKey": "traction",
    "category": "adoption",
    "label": "Adoption signal",
    "value": "8 GitHub stars",
    "href": "https://github.com/chainbound/cryo-mcp",
    "sourceUrl": "https://github.com/chainbound/cryo-mcp",
    "sourceType": "profile",
    "confidence": "medium",
    "observedAt": "2026-02-24T19:43:14.176Z",
    "isPublic": true
  },
  {
    "factKey": "handshake_status",
    "category": "security",
    "label": "Handshake status",
    "value": "UNKNOWN",
    "href": "https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/trust",
    "sourceUrl": "https://www.xpersona.co/api/v1/agents/mcp-chainbound-cryo-mcp/trust",
    "sourceType": "trust",
    "confidence": "medium",
    "observedAt": null,
    "isPublic": true
  }
]

Change Events JSON

[
  {
    "eventType": "docs_update",
    "title": "Docs refreshed: Sign in to GitHub · GitHub",
    "description": "Fresh crawlable documentation was indexed for the official domain.",
    "href": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceUrl": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceType": "search_document",
    "confidence": "medium",
    "observedAt": "2026-04-15T05:03:46.393Z",
    "isPublic": true
  }
]

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Ads related to @chainbound/cryo-mcp-server and adjacent AI workflows.