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Mark Stuart\n\n🤖 AI tooling · ⚙️ Node.js libraries · 🔷 GraphQL\n\n[![GitHub followers](https://img.shields.io/github/followers/mstuart?style=flat\u0026logo=github\u0026label=Follow)](https://github.com/mstuart?tab=followers)\n\n---\n\n\u003cdetails open\u003e\n\u003csummary\u003e\u003ch2\u003e🔷 GraphQL\u003c/h2\u003e\u003c/summary\u003e\n\n- 🔌 **[graphql-agent-toolkit](https://github.com/mstuart/graphql-agent-toolkit)** — Turn any GraphQL API into AI-agent-ready tools — MCP servers, LangChain tools, and SDKs.\n- 🤝 **[graphql-contract](https://github.com/mstuart/graphql-contract)** — Consumer-driven contract testing for GraphQL — no Pact Broker required.\n- 💰 **[graphql-cost-guardian](https://github.com/mstuart/graphql-cost-guardian)** — Score and cap GraphQL query cost with configurable per-field weights.\n- #️⃣ **[graphql-hash](https://github.com/mstuart/graphql-hash)** — Deterministic query hashing for caching and persisted queries.\n- 🗃️ **[graphql-operation-store](https://github.com/mstuart/graphql-operation-store)** — Framework-agnostic persisted-query and trusted-document store.\n- 🧬 **[graphql-pluck-types](https://github.com/mstuart/graphql-pluck-types)** — Pull TypeScript interfaces straight out of a GraphQL SDL string.\n- 📐 **[graphql-schema-policies](https://github.com/mstuart/graphql-schema-policies)** — Enforce semantic schema-design policies in CI.\n- 🛡️ **[graphql-sentinel](https://github.com/mstuart/graphql-sentinel)** — Security scanner and runtime shield for GraphQL APIs.\n- 🐕 **[graphql-watchdog](https://github.com/mstuart/graphql-watchdog)** — Performance toolkit — N+1 detection, normalized caching, cost analysis, CI regression.\n- 🎓 **[graphql-workshop](https://github.com/mstuart/graphql-workshop)** — Hands-on GraphQL training workshop (2018).\n- 🎤 **[xoom-graphql-workshop](https://github.com/mstuart/xoom-graphql-workshop)** — Hands-on GraphQL training workshop (2019).\n\n\u003c!-- AUTO:graphql:start --\u003e\n\u003c!-- AUTO:graphql:end --\u003e\n\n\u003c/details\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003e\u003ch2\u003e🤖 AI \u0026 Agent Tooling\u003c/h2\u003e\u003c/summary\u003e\n\n- 📟 **[ai-statusline](https://github.com/mstuart/ai-statusline)** — Real-time model, token, cost, and git status line for AI coding assistants.\n- 🧠 **[code-memory](https://github.com/mstuart/code-memory)** — Persistent memory for AI coding — semantic search, git history, context that survives.\n- ✂️ **[mcp-prune](https://github.com/mstuart/mcp-prune)** — Audit MCP server usage from Claude Code transcripts and prune the idle ones.\n- ⏪ **[mcp-replay](https://github.com/mstuart/mcp-replay)** — Record and replay MCP interactions for deterministic CI — nock/msw for MCP.\n- 🔍 **[mcp-tool-lint](https://github.com/mstuart/mcp-tool-lint)** — Static linter that catches MCP tool-definition defects before they ship.\n- 🍼 **[pr-babysitter](https://github.com/mstuart/pr-babysitter)** — Auto-fixes merge conflicts, failing CI, and review comments with Claude Code.\n\n\u003c!-- AUTO:ai:start --\u003e\n\u003c!-- AUTO:ai:end --\u003e\n\n\u003c/details\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003e\u003ch2\u003e🌐 HTTP \u0026 API Tooling\u003c/h2\u003e\u003c/summary\u003e\n\n- 🛟 **[fetch-resilience](https://github.com/mstuart/fetch-resilience)** — Retry, timeout, circuit breaker, and bulkhead policies for native fetch — edge-safe, zero deps.\n- 🚨 **[openapi-sentinel](https://github.com/mstuart/openapi-sentinel)** — Catch OpenAPI 3.1 spec drift live with runtime request/response validation.\n- 📋 **[problem-response](https://github.com/mstuart/problem-response)** — RFC 9457 Problem Details error responses — framework-agnostic and TypeScript-first.\n- 🔖 **[versionkit](https://github.com/mstuart/versionkit)** — API versioning with RFC-compliant Sunset and Deprecation headers.\n- ⏱️ **[api-perf-budget](https://github.com/mstuart/api-perf-budget)** — Define and enforce per-route latency budgets in CI.\n\n\u003c!-- AUTO:http:start --\u003e\n\u003c!-- AUTO:http:end --\u003e\n\n\u003c/details\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003e\u003ch2\u003e⚙️ Async \u0026 Runtime Primitives\u003c/h2\u003e\u003c/summary\u003e\n\n- 🏁 **[abort-race](https://github.com/mstuart/abort-race)** — Race async operations and auto-cancel the losers' AbortSignals.\n- ⏲️ **[abort-timer](https://github.com/mstuart/abort-timer)** — An AbortSignal that fires after a timeout — with reset and clear.\n- 🔗 **[signal-compose](https://github.com/mstuart/signal-compose)** — Combine AbortSignals with AND, OR, and timeout semantics.\n- 🧵 **[context-local](https://github.com/mstuart/context-local)** — Typed, ergonomic context for async flows over AsyncLocalStorage.\n- 🧹 **[disposable-from](https://github.com/mstuart/disposable-from)** — Wrap timers, listeners, and intervals as Disposables with clean teardown.\n- ❓ **[has-disposable](https://github.com/mstuart/has-disposable)** — Check whether a value implements Disposable or AsyncDisposable.\n- 🧴 **[using-safe](https://github.com/mstuart/using-safe)** — Use and dispose resources safely, even without the `using` declaration.\n- 👷 **[offload-fn](https://github.com/mstuart/offload-fn)** — Run a function in a Worker thread and await the result as a promise.\n- 🔎 **[is-runtime](https://github.com/mstuart/is-runtime)** — Detect which JavaScript runtime you're executing in.\n- 🔐 **[has-permission](https://github.com/mstuart/has-permission)** — Check and assert Node.js Permission Model grants at runtime.\n\n\u003c!-- AUTO:async:start --\u003e\n\u003c!-- AUTO:async:end --\u003e\n\n\u003c/details\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003e\u003ch2\u003e⚡ Performance, Memory \u0026 Caching\u003c/h2\u003e\u003c/summary\u003e\n\n- 📦 **[dep-perf-analyzer](https://github.com/mstuart/dep-perf-analyzer)** — Measure the runtime performance cost of your npm dependencies.\n- 📊 **[mem-pressure](https://github.com/mstuart/mem-pressure)** — Watch Node.js memory and emit events when thresholds are crossed.\n- 🩺 **[memcheck-node](https://github.com/mstuart/memcheck-node)** — Automated memory-leak regression testing for Node.js.\n- 📈 **[perf-fn](https://github.com/mstuart/perf-fn)** — Time sync and async functions with the Performance API.\n- 🗑️ **[weakref-store](https://github.com/mstuart/weakref-store)** — A WeakRef cache that evicts entries as values get garbage-collected.\n- 🧰 **[portacache](https://github.com/mstuart/portacache)** — Portable key-value cache that auto-picks the best available backend.\n\n\u003c!-- AUTO:perf:start --\u003e\n\u003c!-- AUTO:perf:end --\u003e\n\n\u003c/details\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003e\u003ch2\u003e🧱 Data, Collections \u0026 Errors\u003c/h2\u003e\u003c/summary\u003e\n\n- 🔁 **[iterable-ops](https://github.com/mstuart/iterable-ops)** — Lazy map, filter, take, chunk, zip, and flatten for sync and async iterables.\n- 🗺️ **[map-extras](https://github.com/mstuart/map-extras)** — Missing Map helpers — mapValues, filterEntries, merge, invert, groupBy.\n- ➗ **[set-extras](https://github.com/mstuart/set-extras)** — Set algebra — union, intersection, difference, subset, superset.\n- 🛂 **[schema-guard](https://github.com/mstuart/schema-guard)** — Build runtime type guards from a plain object schema.\n- 🔀 **[deep-diff-patch](https://github.com/mstuart/deep-diff-patch)** — Compute a minimal JSON diff between objects and apply it as a patch.\n- 📤 **[error-serialize](https://github.com/mstuart/error-serialize)** — Serialize and rebuild Error objects with their cause chains intact.\n- 🏷️ **[error-with-cause](https://github.com/mstuart/error-with-cause)** — Typed error classes with codes, cause chains, and type guards.\n- 🌊 **[stream-to-value](https://github.com/mstuart/stream-to-value)** — Drain a Web ReadableStream into a string, bytes, JSON, or array.\n- 🚿 **[web-stream-transform](https://github.com/mstuart/web-stream-transform)** — Functional map, filter, take, batch, and tap for Web Streams.\n\n\u003c!-- AUTO:data:start --\u003e\n\u003c!-- AUTO:data:end --\u003e\n\n\u003c/details\u003e\n\n\u003c!-- AUTO:recent:start --\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003e\u003ch2\u003e🆕 Recently Published\u003c/h2\u003e\u003c/summary\u003e\n\n\u003e Newest public repos that didn't match a section's naming prefix — move them into a section above.\n\n- **[tare](https://github.com/mstuart/tare)** — Lossless-by-default context compression for LLM coding agents — proxy, library, CLI, and MCP server. Local-first, cache-correct, reversible.\n\n\u003c/details\u003e\n\n\u003c!-- AUTO:recent:end --\u003e\n\n---\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003ch2\u003e📊 Stats\u003c/h2\u003e\u003c/summary\u003e\n\n[![Top languages](https://github-readme-stats.vercel.app/api/top-langs/?username=mstuart\u0026layout=compact\u0026theme=transparent\u0026hide_border=true)](https://github.com/mstuart)\n\n![Contribution graph](https://ghchart.rshah.org/mstuart)\n\n\u003c/details\u003e\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmstuart%2Fmstuart","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fmstuart%2Fmstuart","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmstuart%2Fmstuart/lists"}