Arandu MCP

What it does

When your agent uses it

• Tasks that involve MCP servers
• Tasks that involve Webhooks

Example prompts

• “where does this go”
• “what is the recipe for a webhook/job/nested resource”
• “run the doctor”
• “/arandu-mcp”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

1. 1Connect. Add the server to the client's configuration with the line
2. 2Ask the recipe. Classify the feature as arandu-feature says, then call
3. 3Ask where each piece goes. Before writing a file, call
4. 4Generate preview-first. Call generate without apply, read the files
5. 5Run the doctor through the doctor tool after the change, fix each

What it can do on your machine

Read from SKILL.md and the folder at commit b8a4273. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • go
  • bash
  • git

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Arandu MCP loads about 2.1k tokens when it runs. Until then it costs about 174 tokens; SKILL.md has 959 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~174

When it runs · the whole SKILL.md, loaded when a task matches

~2.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from arandu-io/arandu at commit b8a4273, republished under its MIT licence (© arandu-io). 959 words, ~2,069 tokens.

name

arandu-mcp

description

Connect a coding assistant to `aru mcp`, the MCP server the aru CLI runs for the project in the current directory, and ask it instead of guessing -- where a kind of code lives, the order a feature is built in, what aru doctor reports, which command does what, and a generator previewed before it writes. Use at the start of any session in an Arandu (Go) application whose client can start an MCP server, when the question is "where does this go", "what is the recipe for a webhook/job/nested resource", "run the doctor", "which aru command", or before running an aru make:* generator. This is the developer's server; an MCP server the application itself exposes is arandu-integrations.

license

MIT

metadata.audience

app

{"command": "aru", "args": ["mcp"]}

package example

import (
	"context"

	"github.com/arandu-io/hesape/auth"
	"github.com/arandu-io/hesape/database"

	models "<module>/app/Models"
	policies "<module>/app/Policies"
)

// Unpin is a use case in the shape the service card gives: the row is read
// under a read Grant, the policy decides about that row, and the write is
// made with the Grant the policy issued for it.
func Unpin(ctx context.Context, db *database.DB, actor auth.Subject, id string) error {
	var policy policies.NotePolicy
	read, err := auth.Authorize(ctx, policy, actor, policies.NoteView, models.Note{})
	if err != nil {
		return err
	}
	note, err := models.Notes(db).FindOrFail(ctx, read, id)
	if err != nil {
		return err
	}
	write, err := auth.Authorize(ctx, policy, actor, policies.NoteUpdate, *note)
	if err != nil {
		return err
	}
	note.Pinned = false
	_, err = note.Save(ctx, write)
	return err
}

export GOWORK=off
aru model:build --check
aru view:build
gofmt -l $(find . -name '*.go' -not -path '*/testdata/*' -not -name '*.kyse.go')
go vet ./...
bash tests/test-layout-guard.sh
go test -race ./...
go build ./...
aru doctor

<!-- arandu:begin custom -->

<!-- arandu:end custom -->

© arandu-io, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/arandu-mcp of arandu-io/arandu.

Open the folder on GitHubat commit b8a4273