MCPFax On-Chain Toolkit
REMOTE · ONCHAIN-TOOLKIT.BOWLING-ANTHONY.WORKERS.DEV · SCANNED SEP 20
The on-chain facts you need in the seconds before you transact.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 6 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability78
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 895 tokens (~149/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management90
- Stability observed for 27 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the MCPFax On-Chain Toolkit MCP server?
MCPFax On-Chain Toolkit is a hosted endpoint at https://onchain-toolkit.bowling-anthony.workers.dev/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · onchain-toolkit.bowling-anthony.workers.dev
claude mcp add --transport http com-mcpscores-onchain-toolkit 'https://onchain-toolkit.bowling-anthony.workers.dev/mcp'
{
"mcpServers": {
"com-mcpscores-onchain-toolkit": {
"url": "https://onchain-toolkit.bowling-anthony.workers.dev/mcp"
}
}
} {
"servers": {
"com-mcpscores-onchain-toolkit": {
"type": "http",
"url": "https://onchain-toolkit.bowling-anthony.workers.dev/mcp"
}
}
} [mcp_servers.com-mcpscores-onchain-toolkit] url = "https://onchain-toolkit.bowling-anthony.workers.dev/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-mcpscores-onchain-toolkit": {
"type": "remote",
"url": "https://onchain-toolkit.bowling-anthony.workers.dev/mcp",
"enabled": true
}
}
} openclaw mcp add com-mcpscores-onchain-toolkit --url 'https://onchain-toolkit.bowling-anthony.workers.dev/mcp' --transport streamable-http
mcp_servers:
com-mcpscores-onchain-toolkit:
url: "https://onchain-toolkit.bowling-anthony.workers.dev/mcp" {
"McpServers": {
"com-mcpscores-onchain-toolkit": {
"Transport": "http",
"Url": "https://onchain-toolkit.bowling-anthony.workers.dev/mcp"
}
}
} assistant mcp add com-mcpscores-onchain-toolkit -t streamable-http -u 'https://onchain-toolkit.bowling-anthony.workers.dev/mcp'
{
"mcpServers": {
"com-mcpscores-onchain-toolkit": {
"type": "http",
"url": "https://onchain-toolkit.bowling-anthony.workers.dev/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 19 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 77 to 80. That category is still filling its 30-day observation window: 23 days of observed history at the previous scan, 24 at this one. The score rises as the window fills, whether or not the server changes.
- 15 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 70 to 73. That category is still filling its 30-day observation window: 21 days of observed history at the previous scan, 22 at this one. The score rises as the window fills, whether or not the server changes.
- 13 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.
- 11 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 57 to 60. That category is still filling its 30-day observation window: 17 days of observed history at the previous scan, 18 at this one. The score rises as the window fills, whether or not the server changes.
- 8 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.
- 6 Sept 26 +1
- Server version: 1.0.0 → 1.0.2 functional
- 4 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 20 Sept 2026 · Probed https://onchain-toolkit.bowling-anthony.workers.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=bowling-anthony.workers.dev | CN=WE1,O=Google Trust Services,C=US | 25 Jul 2026 | 23 Oct 2026 | ECDSA 256 | ECDSA-SHA256 | 826320791cd0fbaa13db7a734e563515 |
| SANs: bowling-anthony.workers.dev, *.bowling-anthony.workers.dev | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of onchain-toolkit.bowling-anthony.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://onchain-toolkit.bowling-anthony.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://onchain-toolkit.bowling-anthony.workers.dev/mcp | Inconclusive | 405 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
address_info Balance, next nonce, and whether an address is a contract ~147
Native balance, the next nonce to use, and whether the address holds contract code — the three things needed before sending from or to an address. Pass 'token' as well to read an ERC-20 balance for the same address in the same call. Values are read at the latest block, so a reorg can change them. Costs $0.008 USDC per call via x402 on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | 0x-prefixed 20-byte address. |
| chain | string | – | ethereum, base, arbitrum, optimism or polygon. Defaults to base. |
| token | string | – | Optional ERC-20 contract address to also report that token's balance. |
No output schema declared.
No examples provided.
demand_report What agents are asking for most (free) ~57
FREE, no payment. The aggregate of what agents have told us they are looking for, most-requested first, with the categories nothing available yet serves.
| Name | Type | Req | Description |
|---|---|---|---|
| days | string | – | Window in days, default 30, max 90. |
No output schema declared.
No examples provided.
gas_now Current gas price on one or several chains ~144
Live gas price on Ethereum, Base, Arbitrum, Optimism or Polygon — in wei and gwei, plus what a plain 21,000-gas transfer would cost in the native token, which is the number you actually budget with. Pass several chains comma-separated to compare where to execute. Call this immediately before sending a transaction: gas moves every block, so the answer is good for seconds, not minutes. Costs $0.005 USDC per call via x402 on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| chain | string | – | One or more of ethereum, base, arbitrum, optimism, polygon — comma-separated, e.g. 'base,ethereum'. Defaults to base. |
No output schema declared.
No examples provided.
request_data Tell us what data you are looking for (free) ~90
FREE, no payment. Describe in your own words the data you are trying to buy — anything, not just on-chain data — and get back whether we operate a service that supplies it, with the MCP endpoint if so. Every request is catalogued so repeatedly-requested data gets built. Nothing identifying is stored, only the words of the request.
| Name | Type | Req | Description |
|---|---|---|---|
| need | string | yes | What you are looking for. |
No output schema declared.
No examples provided.
token_info ERC-20 token details by contract address ~150
Read an ERC-20's name, symbol, decimals and total supply straight from the contract on the chain you name, and confirm the address actually has code there. Use before quoting an amount or building a transfer: getting decimals wrong is the classic way to send 1,000,000x the intended value. An address with no code, or a contract that is not an ERC-20, is reported as such and is NOT charged. Costs $0.005 USDC per call via x402 on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | 0x-prefixed 20-byte contract address. |
| chain | string | – | ethereum, base, arbitrum, optimism or polygon. Defaults to base. |
No output schema declared.
No examples provided.
tx_status Did this transaction succeed? ~132
Status of a transaction by hash: success, failed or still pending, with the block it landed in, sender and recipient, value moved, gas used, the fee actually paid, and how many logs it emitted. Use to confirm an action you took really settled rather than assuming it did. An unknown hash is reported as not_found and is NOT charged. Costs $0.005 USDC per call via x402 on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| chain | string | – | ethereum, base, arbitrum, optimism or polygon. Defaults to base. |
| hash | string | yes | 0x-prefixed 32-byte transaction hash. |
No output schema declared.
No examples provided.
What is the MCPFax On-Chain Toolkit MCP server?
MCPFax On-Chain Toolkit is an MCP server listed in the public MCP registry as com.mcpscores/onchain-toolkit. The on-chain facts you need in the seconds before you transact. This page covers its hosted endpoint (https://onchain-toolkit.bowling-anthony.workers.dev/mcp).
Is the MCPFax On-Chain Toolkit MCP server safe to use?
MCPFax On-Chain Toolkit scores 73 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the MCPFax On-Chain Toolkit MCP server expose?
MCPFax On-Chain Toolkit exposes 6 tools: request_data, demand_report, gas_now, token_info, tx_status, address_info. Their descriptions and schemas cost roughly 720 tokens of context every time the server is loaded.
Does the MCPFax On-Chain Toolkit MCP server require authentication?
No. We connected to MCPFax On-Chain Toolkit without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the MCPFax On-Chain Toolkit MCP server still maintained?
MCPFax On-Chain Toolkit is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.