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Fantasy Football MCP Server

AI-powered Yahoo Fantasy Football assistant for lineup optimization, draft strategy, and league management with player enhancement and multi-league support.

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// key findings
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
Open source with a license and README
Anyone can audit the code, the license is declared, and the publisher documents what it does.
🔐
You'll be asked for 5 credentials: YAHOO_ACCESS_TOKEN, OPENAI_API_KEY, REDDIT_CLIENT_SECRET, YAHOO_CLIENT_SECRET, YAHOO_REFRESH_TOKEN
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// required environment variables
This server reads these from process.env. You'll be asked to provide them before it can run.
🔐 secretYAHOO_ACCESS_TOKENyour_access_token
configYAHOO_GUIDyour_yahoo_guid
configHOST
configPORT
configSLEEPER_DEBUG
🔐 secretOPENAI_API_KEY
configLLM_MODEL
configLLM_TEMPERATURE
configLLM_MAX_TOKENS
configLLM_TIMEOUT
configOPTIMIZATION_MAX_WORKERS
configUSE_GENETIC_ALGORITHM
configGENETIC_POPULATION_SIZE
configGENETIC_GENERATIONS
configENABLE_EXPLANATIONS
configENABLE_ALTERNATIVES
configENABLE_EDGE_CASES
configENABLE_CACHING
configCACHE_SIZE_MB
configENABLE_METRICS
configLOG_LEVEL
configENABLE_FILE_LOGGING
configLOG_FILE_PATH
configENABLE_LLM_ENHANCEMENT
configENABLE_HYBRID_MODE
configENABLE_FALLBACK_MODE
configENVIRONMENT
configMAX_OPTIMIZATIONS_PER_MINUTE
configMAX_INTERACTIONS_PER_MINUTE
configREDDIT_CLIENT_IDyour_reddit_client_id
🔐 secretREDDIT_CLIENT_SECRETyour_reddit_client_secret
configREDDIT_USERNAMEyour_reddit_username
configYAHOO_CLIENT_IDyour_consumer_key_here
🔐 secretYAHOO_CLIENT_SECRETyour_consumer_secret_here
🔐 secretYAHOO_REFRESH_TOKENyour_refresh_token
// full audit trail
The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.
// improvement guidance — verified publishers only
We have 5 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
[![M8ven Score](https://m8ven.ai/badge/mcp/derekrbreese-fantasy-football-mcp-public-1xragp)](https://m8ven.ai/mcp/derekrbreese-fantasy-football-mcp-public-1xragp)
commit: caa61ab15eb3e022ff2377d163156fadf05519b8
code hash: 7e8a4bf5fcfe54eff3a390ec30b2a69b11b0cd5fd37f29f47dfca21ede2accb5
verified: 6/21/2026, 10:45:17 AM
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