mcp-registry/io.github.cavan1977/freetoolhub · v2.0.0
As of 2026-10-21 17:13 UTC, the Cavan1977 Freetoolhub MCP server is up with a Glimind reliability score of 100/100 (grade A). Over the last 30 days it answered 100% of Glimind's liveness checks.
44 calculators for AI agents: US tax, finance, business + an MCP engineering & security suite.
Claude Code
claude mcp add --transport http cavan1977-freetoolhub-mcp-server https://freetoolhub.org/api/mcp
Claude Desktop · Windsurf · Cline (mcpServers JSON)
{
"mcpServers": {
"cavan1977-freetoolhub-mcp-server": {
"type": "http",
"url": "https://freetoolhub.org/api/mcp"
}
}
}
Third-party server, listed as discovered. Review its source before installing.
50 of 50 tool(s) carry no readOnlyHint/destructiveHint annotations.
Annotate read-only tools with {"readOnlyHint": true}. Agents and gateways can then run them without a confirmation prompt, and route around destructive ones. How to fix →
50 tools on one server. Tool-selection accuracy drops as the menu grows, and some clients (e.g. Cursor) cap the number of active tools.
Group tools by task into smaller servers or toolsets, and merge near-duplicates behind one tool with a mode parameter. How to fix →
4 tool(s) look like they change state (create/send/delete/pay…) but declare no destructiveHint.
Set annotations {"readOnlyHint": false, "destructiveHint": true|false, "idempotentHint": …}. Clients use these to ask the user before a side effect and to auto-approve safe reads. How to fix →
Negotiates MCP 2024-11-05. Structured output, tool output schemas and elicitation arrived in 2025-06-18.
Upgrade the MCP SDK and negotiate 2025-06-18 or newer. How to fix →
No tool declares an outputSchema.
Declare outputSchema and return structuredContent (MCP 2025-06-18+). Agents can then parse results without guessing, and chain tools reliably. How to fix →
Paste-ready definitions with the problems above fixed. Changes marked verify need a human look. All of them as JSON: /v1/readiness/mcp-registry%2Fio.github.cavan1977%2Ffreetoolhub/fixes
{
"name": "calculate_1099k_tax",
"description": "Estimate tax on 1099-K income (reselling, gig work). SE tax, QBI, quarterly 1040-ES. Uses latest CDN data.",
"inputSchema": {
"type": "object",
"required": [
"grossReceipts"
],
"properties": {
"state": {
"type": "string",
"default": "",
"description": "US state abbreviation (e.g. CA, NY, TX)"
},
"filingStatus": {
"enum": [
"single",
"married",
"head"
],
"type": "string",
"default": "single",
"description": "Tax filing status"
},
"grossReceipts": {
"type": "number",
"description": "Total 1099-K receipts"
},
"otherExpenses": {
"type": "number",
"description": "Other expenses"
},
"costOfGoodsSold": {
"type": "number",
"description": "COGS"
}
}
},
"annotations": {
"readOnlyHint": true
}
}{
"name": "calculate_break_even",
"description": "Break-even point: units to sell to cover fixed costs. Contribution margin, target profit analysis.",
"inputSchema": {
"type": "object",
"required": [
"fixedCosts",
"pricePerUnit",
"variableCostPerUnit"
],
"properties": {
"fixedCosts": {
"type": "number",
"description": "Fixed costs"
},
"pricePerUnit": {
"type": "number",
"description": "Price per unit"
},
"targetProfit": {
"type": "number",
"description": "Target profit"
},
"variableCostPerUnit": {
"type": "number",
"description": "Variable cost per unit"
}
}
},
"annotations": {
"readOnlyHint": true
}
}{
"name": "calculate_capital_gains_tax",
"description": "US capital gains tax on stock/crypto. Short vs long-term, NIIT 3.8%, state tax. Uses latest CDN LTCG brackets.",
"inputSchema": {
"type": "object",
"required": [
"purchasePrice",
"salePrice",
"holdingPeriodDays"
],
"properties": {
"state": {
"type": "string",
"default": "",
"description": "US state abbreviation (e.g. CA, NY, TX)"
},
"salePrice": {
"type": "number",
"description": "Sale price"
},
"filingStatus": {
"enum": [
"single",
"married",
"head"
],
"type": "string",
"default": "single",
"description": "Tax filing status"
},
"purchasePrice": {
"type": "number",
"description": "Cost basis"
},
"ordinaryIncome": {
"type": "number",
"description": "Annual ordinary income"
},
"holdingPeriodDays": {
"type": "number",
"description": "Days held (>365=long-term)"
}
}
},
"annotations": {
"readOnlyHint": true
}
}Get an email or webhook when this server's readiness drops by 10+ points, tool-poisoning text appears, or a tool breaks:
curl -X POST https://glimind.com/v1/subscriptions -H 'content-type: application/json' -d '{"tools":["mcp-registry/io.github.cavan1977/freetoolhub"],"email":"[email protected]"}'Agents: watch_tool({"toolId": "mcp-registry/io.github.cavan1977/freetoolhub"}) over MCP.
audit_mcp_server_security ~352 tokenscalculate_retirement ~316 tokensscore_mcp_server_trust ~290 tokensplan_context_window_budget ~280 tokenscompare_llm_api_costs ~273 tokensStatic checks of the advertised tools/list (schema, descriptions, annotations, tool-poisoning patterns, names, size) plus observed protocol, uptime, latency and contract changes. Read-only: no tool is ever called. Weights: schema 15, docs 20, safety 15, efficiency 15, compatibility 15, protocol 5, reliability 10, stability 5. Token counts are estimates (~3.6 characters per token).
Operator? Fix these, then re-check live. Embed the readiness badge:
[](https://glimind.com/server/mcp-registry%2Fio.github.cavan1977%2Ffreetoolhub?ref=badge)
<a href="https://glimind.com/server/mcp-registry%2Fio.github.cavan1977%2Ffreetoolhub?ref=badge"><img src="https://glimind.com/v1/readiness/badge/mcp-registry%2Fio.github.cavan1977%2Ffreetoolhub.svg" alt="MCP agent-readiness"></a>
.. image:: https://glimind.com/v1/readiness/badge/mcp-registry%2Fio.github.cavan1977%2Ffreetoolhub.svg :target: https://glimind.com/server/mcp-registry%2Fio.github.cavan1977%2Ffreetoolhub?ref=badge :alt: MCP agent-readiness
Glimind records every version of this server's tool definitions in a signed, append-only transparency log. Current manifest sha256:355c1e6ec65f89a9…, first seen 2026-10-17, included at leaf 7067 of 40,681. Version history · verify what your client received.
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Glimind tells agents whether a server is up right now and how to call it, then fails over to a live alternative when it isn't.
Claude Code
claude mcp add --transport http glimind https://glimind.com/mcp
Claude Desktop · Windsurf · Cline (mcpServers JSON)
{
"mcpServers": {
"glimind": {
"type": "http",
"url": "https://glimind.com/mcp"
}
}
}
As of 2026-10-21 17:13 UTC, the Cavan1977 Freetoolhub MCP server is up with a Glimind reliability score of 100/100 (grade A). Over the last 30 days it answered 100% of Glimind's liveness checks.
Cavan1977 Freetoolhub MCP server advertises 50 tools, including advise_tool_portfolio, audit_mcp_server_security, calculate_1099k_tax, calculate_break_even, calculate_capital_gains_tax.
Point your MCP client at this streamable-http endpoint: https://freetoolhub.org/api/mcp
Glimind scanned all 50 tool definitions for tool-poisoning patterns — hidden or invisible characters, instructions that override the model, concealment from the user, requests to read credential or MCP config files, conversation exfiltration and cross-tool shadowing — and found none. This checks what the server tells the model, not what its code does; review the source before granting access to sensitive data.
Status page: 90-day uptime, every outage and how long it lasted.
Claim this listing to get the Verified operator marker, a remediation checklist and owner analytics, or embed the live badge from any of the tool pages above. Maintainers: alerts, deploy attestation and monthly reports.
Status is an automated estimate from Glimind's liveness checks (handshake and tool listing only; no tool is ever called) and may lag or differ from your network. Glimind is not affiliated with this server or its operator. Operator? Request a correction or opt out at https://glimind.com/opt-out.