Free MCP servers · page 73

Open source MCP servers that need no paid account or API key, based on each listing. Run them locally with Claude Code or any MCP client.

12,872 servers · showing 3457–3504

GenPark Adaptive Exponential Backoff with Jitter Retry

7

alphaparkinc/genpark-adaptive-exponential-backoff-jitter-retry-skill

Full jitter exponential backoff retry scheduling and half-open circuit breaker for LLM APIs

LocalFreeAI Agents & Coding Agents

GenPark Agent State Snapshot & Time-Travel Skill

7

alphaparkinc/genpark-agent-state-snapshot-time-travel-skill

Agent conversation state snapshotting and time-travel rollback engine pruning divergent hallucinatio

LocalFreeLocation & Travel

GenPark Aho-Corasick Multi-Pattern Matcher

7

alphaparkinc/genpark-aho-corasick-multi-pattern-matcher-skill

High-throughput Aho-Corasick automaton for simultaneous multi-keyword dictionary matching and conten

LocalFreeOther Tools & Integrations

GenPark AST Diff Semantic PR Summarizer

7

alphaparkinc/genpark-ast-diff-semantic-pr-summarizer-skill

Synthesize semantic AST delta trees across git diffs and classify breaking signature changes

LocalFreeVersion Control

GenPark Bloom Filter URL Dedup Crawler

7

alphaparkinc/genpark-bloom-filter-url-dedup-crawler-skill

In-memory Bloom filter for URL and document hash deduplication preventing redundant web crawler inge

LocalFreeSearch & Web Scraping

GenPark Circuit Breaker Fault Sentinel

7

alphaparkinc/genpark-circuit-breaker-fault-sentinel-skill

Three-state circuit breaker with failure rate tripping and automatic half-open probe recovery

LocalFreeOther Tools & Integrations

GenPark Complex Financial Formula Audit Validator

7

alphaparkinc/genpark-complex-financial-formula-audit-validator-skill

Arithmetic consistency checks and cross-footing validation for financial statements

LocalFreeOther Tools & Integrations

GenPark Concurrency Semaphore Guard

7

alphaparkinc/genpark-concurrency-semaphore-guard-skill

In-memory concurrency leaky-bucket and fair semaphore guard protecting downstream LLM APIs from rate

LocalFreeKnowledge, Memory & RAG

GenPark Consistent Hash Ring Router

7

alphaparkinc/genpark-consistent-hash-ring-router-skill

Consistent hashing ring with virtual nodes for distributed LLM cache routing and agent partitioning

LocalFreeAI Agents & Coding Agents

GenPark Context Window Token Pruner

7

alphaparkinc/genpark-context-window-token-pruner-skill

Priority-weighted context window token pruner and FIFO eviction engine protecting LLM prompt boundar

LocalFreeAI Agents & Coding Agents

GenPark Conversational Barge-In Interruption Arbitrator

7

alphaparkinc/genpark-conversational-barge-in-interruption-arbitrator-skill

Arbitrate conversational interruptions with echo rules and playback truncation estimation

LocalFreeOther Tools & Integrations

GenPark Cron Jitter Scheduler Agent

7

alphaparkinc/genpark-cron-jitter-scheduler-agent-skill

Crontab syntax parser and distributed jittered task scheduler preventing thundering herds in autonom

LocalFreeProductivity & Project Management

GenPark Distributed Deadlock Wait-For-Graph Detector

7

alphaparkinc/genpark-distributed-deadlock-wait-for-graph-detector-skill

Real-time Tarjan SCC cycle detection on lock Wait-For-Graphs with victim transaction arbitrator

LocalFreeOther Tools & Integrations

GenPark Distributed ID Snowflake Generator

7

alphaparkinc/genpark-distributed-id-snowflake-generator-skill

64-bit Twitter Snowflake-compatible distributed unique ID generator with clock backwards drift prote

LocalFreeDatabases

GenPark Distributed Lease Lock Coordinator

7

alphaparkinc/genpark-distributed-lease-lock-coordinator-skill

In-memory distributed lease lock with monotonically increasing fencing tokens preventing multi-agent

LocalFreeKnowledge, Memory & RAG

GenPark Entropy Hallucination Detector

7

alphaparkinc/genpark-entropy-hallucination-detector-skill

Token entropy and n-gram perplexity analyzer auditing LLM outputs for degenerate repetition loops an

LocalFreeAI Agents & Coding Agents

GenPark Exponential Backoff Jitter Retry

7

alphaparkinc/genpark-exponential-backoff-jitter-retry-skill

Enterprise retry engine with full jitter, decorrelated jitter, and truncated exponential backoff for

LocalFreeOther Tools & Integrations

GenPark Few-Shot MMR Diversity Selector

7

alphaparkinc/genpark-few-shot-mmr-diversity-selector-skill

Maximal Marginal Relevance (MMR) exemplar selector optimizing semantic relevance and diversity for L

LocalFreeOther Tools & Integrations

GenPark Git Commit Conventional Semantic Linter

7

alphaparkinc/genpark-git-commit-conventional-semantic-linter-skill

Conventional Commits 1.0.0 semantic linter and changelog grouping engine parsing breaking changes an

LocalFreeVersion Control

GenPark Git Semantic Cherry-Pick Conflict Resolver

7

alphaparkinc/genpark-git-semantic-cherry-pick-conflict-resolver-skill

Three-way AST hunk alignment and non-overlapping block conflict resolution for Git cherry-picks

LocalFreeVersion Control

GenPark Graph Cycle Deadlock Detector

7

alphaparkinc/genpark-graph-cycle-deadlock-detector-skill

Tarjan strongly connected components cycle and deadlock detector for multi-agent DAG workflows

LocalFreeAI Agents & Coding Agents

GenPark Hybrid Bounding Box OCR Table Reconstructor

7

alphaparkinc/genpark-hybrid-bounding-box-ocr-table-reconstructor-skill

Spatial clustering 2D grid reconstructor converting OCR boxes into Markdown tables

LocalFreeOther Tools & Integrations

GenPark JSON Pointer Patch Delta

7

alphaparkinc/genpark-json-pointer-patch-delta-skill

RFC 6901 / RFC 6902 compliant JSON Pointer and JSON Patch delta computation engine

LocalFreeOther Tools & Integrations

GenPark JSON Schema Contract Validator

7

alphaparkinc/genpark-json-schema-contract-validator-skill

Zero-dependency JSON schema subset validator ensuring LLM structured outputs strictly conform to con

LocalFreeAI Agents & Coding Agents

GenPark JSON-RPC Batch Pipelining Dispatcher

7

alphaparkinc/genpark-json-rpc-batch-pipelining-dispatcher-skill

High-throughput JSON-RPC 2.0 batch pipelining and inter-tool parameter dependency resolver for Model

LocalFreeAI Agents & Coding Agents

GenPark JWT Token Verifier & Claims Auditor

7

alphaparkinc/genpark-jwt-token-verifier-and-claims-auditor-skill

Pure-Python zero-dependency JWT claims auditor and payload inspector enforcing expiry, audience, and

LocalFreeOther Tools & Integrations

GenPark Levenshtein Fuzzy Tool Matcher

7

alphaparkinc/genpark-levenshtein-fuzzy-tool-matcher-skill

Fast Levenshtein distance and fuzzy similarity matcher autocorrecting hallucinated LLM tool calls

LocalFreeAI Agents & Coding Agents

GenPark LLM Token Bucket & Sliding Window Rate Limiter

7

alphaparkinc/genpark-llm-token-bucket-sliding-window-rate-limiter-skill

Adaptive multi-tier TPM/RPM rate limiter with smooth leaky bucket queuing and burst wait estimation

LocalFreeAI Agents & Coding Agents

GenPark LLM Token Cost Budget Tracker

7

alphaparkinc/genpark-llm-token-cost-budget-tracker-skill

Multi-model LLM token cost budget ledger and burn rate forecaster enforcing spending limits and earl

LocalFreeAI Agents & Coding Agents

GenPark LRU TTL Multi-Tier Cache

7

alphaparkinc/genpark-lru-ttl-multi-tier-cache-skill

In-memory LRU cache with per-key TTL expiration, deterministic eviction, and hit/miss/stale telemetr

LocalFreeKnowledge, Memory & RAG

GenPark Markdown Mermaid Syntax Lint Healer

7

alphaparkinc/genpark-markdown-mermaid-syntax-lint-healer-skill

LLM output Mermaid diagram linting, unquoted bracket healing, and syntax normalization engine

LocalFreeAI Agents & Coding Agents

GenPark Markdown Table AST Normalizer

7

alphaparkinc/genpark-markdown-table-ast-normalizer-skill

AST-based Markdown table normalizer rebalancing columns, padding, and exporting clean RFC 4180 CSV a

LocalFreeOther Tools & Integrations

GenPark Merkle DAG State Verifier

7

alphaparkinc/genpark-merkle-dag-state-verifier-skill

Cryptographic Merkle tree verification engine for agent state transitions, tool call histories, and

LocalFreeFinance, Fintech & Payments

GenPark Multi-Agent Borda Voting Consensus

7

alphaparkinc/genpark-multi-agent-borda-voting-consensus-skill

Positional Borda Count voting and weighted multi-agent consensus engine resolving conflicting model

LocalFreeAI Agents & Coding Agents

GenPark Multi-Source OpenAPI Router Mesh

7

alphaparkinc/genpark-multi-source-openapi-router-mesh-skill

Aggregates multiple OpenAPI specifications into a unified virtual routing mesh with service namespac

LocalFreeOther Tools & Integrations

GenPark Multimodal Chart Data Point Extractor

7

alphaparkinc/genpark-multimodal-chart-data-point-extractor-skill

Calibrate chart axes and convert bar or scatter pixel coordinates to data values

LocalFreeSearch & Web Scraping

GenPark OpenAPI Spec to MCP Tool Synthesizer

7

alphaparkinc/genpark-openapi-spec-to-mcp-tool-synthesizer-skill

Inspect OpenAPI 3.0 specs and synthesize schema-compliant Model Context Protocol tool declarations w

LocalFreeAI Agents & Coding Agents

GenPark PII Redactor & Data Masker

7

alphaparkinc/genpark-pii-redactor-and-data-masker-skill

Regex and Luhn heuristic PII redaction and tokenization engine sanitizing sensitive emails, phones,

LocalFreeCommunication

GenPark Priority Event Scheduler Queue

7

alphaparkinc/genpark-priority-event-scheduler-queue-skill

Min-heap priority event scheduler and delayed task dispatcher for asynchronous multi-agent coordinat

LocalFreeProductivity & Project Management

GenPark Prompt Drift Semantic Fingerprint

7

alphaparkinc/genpark-prompt-drift-semantic-fingerprint-skill

Prompt template drift and structural fingerprint sentinel detecting unauthorized prompt mutations an

LocalFreeAI Agents & Coding Agents

GenPark Prompt Injection Canary Leak Sentinel

7

alphaparkinc/genpark-prompt-injection-canary-leak-sentinel-skill

HMAC-signed zero-width invisible canary token generator and output response leak auditor

LocalFreeAI Agents & Coding Agents

GenPark RAG Semantic Boundary Chunker

7

alphaparkinc/genpark-rag-semantic-boundary-chunker-skill

Semantic boundary preserving text chunker maintaining markdown headers, code fences, and paragraphs

LocalFreeKnowledge, Memory & RAG

GenPark Recursive JSON Schema Healer

7

alphaparkinc/genpark-recursive-json-schema-healer-skill

Recursive JSON schema validator and autonomous healer repairing type mismatches, missing defaults, a

LocalFreeOther Tools & Integrations

GenPark Red-Black Tree Index

7

alphaparkinc/genpark-red-black-tree-index-skill

Self-balancing Red-Black binary search tree engine for ordered indexing, range queries, and log-time

LocalFreeSearch & Web Scraping

GenPark Redact Unredact Session Vault

7

alphaparkinc/genpark-redact-unredact-session-vault-skill

Bidirectional in-memory sensitive vault and surrogate token masker protecting credentials in LLM pro

LocalFreeKnowledge, Memory & RAG

GenPark Reservoir Sampling Stream Auditor

7

alphaparkinc/genpark-reservoir-sampling-stream-auditor-skill

O(k) space unbiased stream reservoir sampling and quantile estimation engine for LLM telemetry and h

LocalFreeAI Agents & Coding Agents

GenPark Safe Eval Expression AST Sandbox

7

alphaparkinc/genpark-safe-eval-expression-ast-sandbox-skill

Zero-dependency AST safe mathematical and boolean expression evaluator and validator

LocalFreeOther Tools & Integrations

GenPark Secure Secret Token Redactor

7

alphaparkinc/genpark-secure-secret-token-redactor-skill

High-speed regex and entropy-based scanner redacting API keys, JWT tokens, and credentials

LocalFreeSecurity & Identity