Model Context Protocol servers. The cost that matters is the tool schemas they put in context, not the size of the config file.
aisenseapi/aisense-free-public-rest-apis
MCP server Claude CodeCodexCursor +2
32 public tools for queues, inboxes, webhooks, approvals, DNS names and temporary workflows. Remote server at aisenseapi.com.
TheSchreckMethod/aleeth-authority-mcp-interface
MCP server Claude CodeCodexCursor +2
The first MCP governed by ICA. Every action is gated and sealed with a verifiable receipt. Remote server at mcp.aleeth.com.
AmericasSuretyBonds/americassuretybonds-mcp
MCP server Claude CodeCodexCursor +2
Surety Bond Encyclopedia: search 6,900+ U.S. surety bond requirements, all 50 states. Remote server at americassuretybonds.com.
MCP server Claude CodeCodexCursor +2
MCP server "io.github.astranl", hosted remotely at astranl.com, as configured in tolegm/astranl-mcp.
MCP server Claude CodeCodexCursor +2
MCP server "mcp", hosted remotely at astranl.com, as configured in ASTRANL/astranl-mcp.
MCP server Claude CodeCodexCursor +2
Search, appraise, trademark-check, and buy premium brandable domain names from Atom.com. Remote server at mcp.atom.com.
MCP server Claude CodeCodexCursor +2
Paid work for agents: claim verifier-checked jobs, submit, earn USDC. Some need no bond or funding. Remote server at api.averray.com.
Axiomatic-AI/ax-prover-base-mcp
MCP server Claude CodeCodexCursor +2
Lean 4 MCP server: compile, prove theorems, and formalize math with Mathlib. Remote server at prover.axiomatic-ai.com.
MCP server Claude CodeCodexCursor +2
Free hosted MCP server by Baby Age Calculator: exact baby age, zodiac, and milestone dates. No key. Remote server at babyagecalculator.com.
MCP server Claude CodeCodexCursor +2
MCP server exposing the Backtest360 engine API as tools for AI agents. Runs locally from the backtest360-mcp Python package. Needs 1 environment variable to run.
dynamicpricing-ai/banditdb-python
MCP server Claude CodeCodexCursor +2
Official Python SDK for BanditDB. Runs locally from the banditdb-python Python package. Needs 2 environment variables to run.
jmtroller/bankruptcy-observer-mcp-api-public-documentation
MCP server Claude CodeCodexCursor +2
MCP server "mcp", hosted remotely at mcp.bankruptcyobserver.com, as configured in jmtroller/bankruptcy-observer-mcp-api-public-documentation.
MCP server Claude CodeCodexCursor +2
US business bankruptcy MCP: filings, dockets, documents, case summaries. Free tier + subscription. Remote server at mcp.bankruptcyobserver.com.
MCP server Claude CodeCodexCursor +2
Governed BI MCP. Ask questions of live company data and list workspace sources via OAuth. Remote server at charts.basedash.com.
MCP server Claude CodeCodexCursor +2
Search Korean cosmetics from Olive Young, Daiso, Naver, Coupang, 11st with EWG ingredient analysis. Remote server at mcp.beauticslab.com.
MCP server Claude CodeCodexCursor +2
55 tools for federal/state/local RFPs, awards, vendors, contact graph, contract vehicles, pursuits. Runs locally from the bidsparq-mcp-server npm package. Needs 2 environment variables to run.
MCP server Claude CodeCodexCursor +2
Price comparison & cart optimizer for bike parts across German & Austrian shops. Remote server at mcp.bikefuchs.com.
MCP server Claude CodeCodexCursor +2
MCP server for the BillingServ API. Runs locally from the @billingserv/mcp-server npm package. Needs 2 environment variables to run.
MCP server Claude CodeCodexCursor +2
One of 2 in
BizGigz Agent Marketplace - register AI agents, manage API keys, and discover MCP capabilities. Remote server at agents.bizgigz.com.
MCP server Claude CodeCodexCursor +2
AI-powered security scanning using Black Duck Signal for vulnerability detection. Runs locally from the @black-duck/mcp-server npm package.
BitsBound/bitsbound-mcp-server
MCP server Claude CodeCodexCursor +2
BitsBound MCP Server - AI-powered contract analysis for Claude, ChatGPT, and Gemini. Runs locally from the @bitsbound/mcp-server npm package.
Black-Swan-Causal-Labs/dagstudio-mcp
MCP server Claude CodeCodexCursor +2
Causal DAG analysis: backdoor paths, adjustment sets, bias simulation. Validated against dagitty. Remote server at dagstudio-mcp.blackswancausallabs.com.
Black-Swan-Causal-Labs/robins-i-mcp
MCP server Claude CodeCodexCursor +2
MCP server implementing ROBINS-I V2 (follow-up/cohort) as a deterministic, provenanced risk-of-bias engine for one result of a non-randomized study. Runs locally from the robins-i-mcp Python package.
Black-Swan-Causal-Labs/target-mcp
MCP server Claude CodeCodexCursor +2
MCP server operationalizing the TARGET reporting guideline (Cashin et al., JAMA/BMJ 2025) as a deterministic, provenanced scoring engine for target trial emulation studies. Runs locally from the target-mcp Python package.