A parent package for walkerOS MCP servers. MCP is a standard way for an AI assistant to access guidance, examples, and tools for working with walkerOS event flows.

Use it to load and validate flow configurations, inspect examples, simulate events with mocked services, bundle flows into JavaScript, and send events through real integrations.

It brings walkerOS concepts, workflow prompts, validation, simulation, bundling, and deployment operations into one organized system. This reduces the need to find each rule or operation separately.

mcps — Skill by elbwalker

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add skills/elbwalker/walkeros/mcps

Any agent

npx skills add elbwalker/walkerOS --skill mcps

Clone the repo

git clone --depth 1 https://github.com/elbwalker/walkerOS

Made for: Claude Code, Codex.

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 981 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5	$0.00000	$0.00981
Opus 5	$0.00000	$0.00491
Sonnet 5	$0.00000	$0.00196
Haiku 4.5	$0.00000	$0.00098

Measured 2d ago against content hash 09594265c04b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mcps scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

The scan reads SKILL.md. This mod also ships 55 executable files (mcp/jest.config.mjs, mcp/src/__tests__/action-requirements.test.ts, mcp/src/__tests__/action-schema-sync.test.ts, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

packages/mcps/SKILL.md · 85 lines

How it starts

The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MCP Packages

Parent folder for all walkerOS MCP server packages.

Architecture

The MCP is the orchestrator and consultant for walkerOS. Four layers:

Resources   →  teach concepts    (flow-schema, mapping, consent, variables, contracts)
Prompts     →  guide workflows   (add-step, setup-mapping, manage-contract)
Tools       →  execute operations (flow_validate, flow_simulate, flow_bundle, flow_push)
Packages    →  provide specifics  (hints, schemas, examples per step)

Packages

Package	Purpose
`mcp/` (`@walkeros/mcp`)	Main server: flow dev tools, reference resources, prompts, unified API
`source-browser/` (`@walkeros/mcp-source-browser`)	Tagging MCP server for source browser

Tools (in `@walkeros/mcp`)

Tool	Description
`flow_load`	Load existing or create new flow configuration
`flow_validate`	Validate events, flows, mappings, or contracts
`flow_bundle`	Bundle flow into deployable JavaScript
`flow_simulate`	Simulate events through a flow (mocked API calls)
`flow_push`	Push real events through a flow (real API calls)
`flow_examples`	List step examples in a flow
`package_search`	Browse or look up walkerOS packages
`package_get`	Fetch package schemas, hints, and examples
`auth`	Device-code login/logout/status for walkerOS cloud
`project_manage`	Manage walkerOS projects (list/get/create/update/delete/set_default)
`flow_manage`	Manage flows and previews (list/get/create/update/delete/duplicate/preview_*)
`deploy_manage`	Manage deployments (deploy/list/get/delete)

Read the full file on GitHub · 85 lines

Files

What ships with it

60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2d ago First seen · 85 lines · 0 tokens per session scan A 09594265c04b

Subscribe to this mod's changes

mcps is a skill published in the GitHub repository elbwalker/walkerOS (343 stars, last pushed 6d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 981 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Analytics and metrics Frontend Languages ReAct tag-manager tagging tracking typescript

nextjs-pages-router

Set up tRPC in Next.js Pages Router with createNextApiHandler, createTRPCNext, withTRPC HOC, SSR via ssr option and ssrPrepass, SSG via createServerSideHelpers with getStaticProps, and server-side helpers for getServerSideProps prefetching.

trpc/trpc · 67 tokens

react-query-setup

Set up @trpc/tanstack-react-query with createTRPCContext(), TRPCProvider, useTRPC() hook, queryOptions/mutationOptions factories, query invalidation via queryClient.invalidateQueries with queryFilter, and type inference with inferInput/inferOutput.

trpc/trpc · 60 tokens

service-oriented-architecture

Break a tRPC backend into multiple services with custom routing links that split on the first path segment (op.path.split('.')) to route to different backend service URLs. Define a faux gateway router that merges service routers for the AppRouter type without running them in the same process. Share procedure and…

trpc/trpc · 91 tokens

middlewares

Create and compose tRPC middleware with t.procedure.use(), extend context via opts.next({ ctx }), build reusable middleware with .concat() and .unstablepipe(), define base procedures like publicProcedure and authedProcedure. Access raw input with getRawInput(). Logging, timing, OTEL tracing patterns.

trpc/trpc · 63 tokens

server-side-calls

Call tRPC procedures directly from server code using t.createCallerFactory() and router.createCaller(context) for integration testing, internal server logic, and custom API endpoints. Catch TRPCError and extract HTTP status with getHTTPStatusCodeFromError(). Error handling via onError option.

trpc/trpc · 61 tokens

adapter-express

Mount tRPC as Express middleware with createExpressMiddleware() from @trpc/server/adapters/express. Access Express req/res in createContext via CreateExpressContextOptions. Mount at a path prefix like app.use('/trpc', ...). Avoid global express.json() conflicting with tRPC body parsing for FormData.