The Real Cost vs Octagon MCP Server
A side-by-side look at the The Real Cost and Octagon MCP Server MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
T
The Real CostFinance & Fintech · Local subprocess (stdio)Free US money calculators with the math shown, from The Real Cost. Education only.53GoodAuth: no auth requiredVerdict: choose The Real Cost for finance & fintech work as a local process; choose Octagon MCP Server for finance & fintech as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
TChoose The Real Cost when
- You need dedicated capabilities in the Finance & Fintech domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You want tools like
credit_card_payoff, debt_consolidation, loan_cost_by_term.
Choose Octagon MCP Server when
- You need dedicated capabilities in the Finance & Fintech domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You have the keys it needs:
OCTAGON_API_KEY. - You want tools like
octagon-prediction-markets-agent, prediction_markets_history, octagon-docs-search.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | T The Real Cost | |
|---|---|---|
| Category | Finance & Fintech | Finance & Fintech |
| Quality signal | 53/100 · Good | 59/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | No auth required | API key required |
| Pricing | Free | Freemium |
| Required env vars | None listed | OCTAGON_API_KEY |
| Verified owner | Community listing | Community listing |
| GitHub stars | 0 | 147 |
| Directory activity | 0 views 0 installs 0 upvotes | 4 views 0 installs 0 upvotes |
| Tools | 6 | 6 |
| Full listing | View The Real Cost | View Octagon MCP Server |
Tools & capabilities
The Real Cost tools 6
credit_card_payoffMonths and total interest to clear a card balance paying only the minimum, versus a fixed monthly payment.debt_consolidationCurrent debts versus one consolidation loan, including the origination fee (taken out of the loan, soloan_cost_by_termMonthly payment, total interest and total paid for one loan over several terms.crypto_trade_costTrading fee, spread and network fees on a buy and a later sale at the same price, the price riseemergency_fundGoal = monthly expenses x months to cover. Months to reach it, and the monthly amount needed to reachlist_guidesNo inputs. Returns the ten guides (title, subtitle, pages, what each covers, price), the complete
Octagon MCP Server tools 6
octagon-prediction-markets-agentprediction_markets_historyoctagon-docs-searchoctagon-docs-readoctagon-docs-listoctagon-docs-refresh
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
The Real Cost
{
"mcpServers": {
"the-real-cost": {
"command": "uvx",
"args": [
"--from",
"git+https://github.com/NoBanks/therealcost-mcp",
"therealcost-mcp"
]
}
}
}
Octagon MCP Server
{
"mcpServers": {
"octagonai-octagon-mcp-server": {
"command": "npx",
"args": [
"-y",
"octagon-mcp"
],
"env": {
"OCTAGON_API_KEY": "YOUR_OCTAGON_API_KEY_HERE"
}
}
}
}
Frequently asked questions
The Real Cost is categorized under Finance & Fintech and uses a local stdio subprocess. Octagon MCP Server belongs to Finance & Fintech and uses a local stdio subprocess. Pick The Real Cost for finance & fintech work and Octagon MCP Server for finance & fintech.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
The Real Cost is listed as free. Auth: no auth required. Octagon MCP Server is listed as freemium — a free tier with paid plans. Auth: api key required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add the-real-cost and octagonai-octagon-mcp-server as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, The Real Cost has a quality signal of 53/100 (Good) with 0 views, 0 installs and 0 GitHub stars. Octagon MCP Server has 59/100 (Good) with 4 views, 0 installs and 147 GitHub stars.