Send and receive emails and phone calls via Inkbox agent identities.

MITAuto-check passedProductivity & Automation

Install Inkbox

skills CLI
$ npx skills add LeoYeAI/openclaw-master-skills --skill inkbox -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install LeoYeAI/openclaw-master-skills inkbox --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/LeoYeAI/openclaw-master-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/inkbox .claude/skills/inkbox && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
inkbox
GitHub stars
2.2k
Token cost
~4.1k tokens
SKILL.md length
671 words
Files
4
Skills in repo
1,235
Repo updated
First seen
Licence
MIT

At a glance

Send and receive emails and phone calls via Inkbox agent identities.

  • Works in 5 steps: Create a temporary directory → Run npm init -y → Run npm install @inkbox/sdk → …
  • The user wants to check inbox messages
  • SKILL.md covers Requirements, Runtime setup, Install & Init and Core Model, plus 9 more sections
  • Calls npm and tsx; reaches aws.amazon.com; needs INKBOX_API_KEY

What it does

Inkbox is an agent skill from LeoYeAI/openclaw-master-skills. Send and receive emails and phone calls via Inkbox agent identities. Use when the user wants to check inbox messages, list unread email, view a thread, search mailbox contents, draft/send an email, place an outbound phone call, list call history, retrieve call transcripts, manage vault credentials, or create/set up an Inkbox identity.

Its SKILL.md is about 4.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files (for example `README.md`, `_meta.json` and `package.json`).

It sits in Productivity & Automation, covering Meeting notes and agendas and Email management. The repository describes itself as: 🧠 Curated collection of 1209+ best OpenClaw skills — weekly updated by MyClaw.ai. The licence is MIT.

When your agent uses it

  • The user wants to check inbox messages
  • List unread email
  • Search mailbox contents
  • Draft/send an email

Example prompts

  • “/inkbox”

Requirements

  • Node.js
  • A credential in INKBOX_API_KEY

Workflow steps

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

  1. Create a temporary directory
  2. Run npm init -y
  3. Run npm install @inkbox/sdk
  4. Write a small .mjs script there
  5. Run it with node

What it can do on your machine

Read from SKILL.md and the folder at commit e5199b5. 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:

    • npm
    • tsx

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

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • aws.amazon.com

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

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • INKBOX_API_KEY

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

Context cost

Inkbox loads about 4.1k tokens when it runs. Until then it costs about 86 tokens; SKILL.md has 671 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~86
When it runs · the whole SKILL.md, loaded when a task matches
~4.1k

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

Auto-check passed

The automated check found no risky patterns in SKILL.md.

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 LeoYeAI/openclaw-master-skills at commit e5199b5, republished under its MIT licence (© LeoYeAI). 671 words, ~4,067 tokens.

Download SKILL.mdSave it as .claude/skills/inkbox/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
inkbox
description
Send and receive emails and phone calls via Inkbox agent identities. Use when the user wants to check inbox messages, list unread email, view a thread, search mailbox contents, draft/send an email, place an outbound phone call, list call history, retrieve call transcripts, manage vault credentials, or create/set up an Inkbox identity.

Inkbox Skill

API-first communication infrastructure for AI agents — email, phone, encrypted vault, and identities.

Requirements

  • INKBOX_API_KEY — Inkbox API key
  • node on PATH (Node.js 18+)
  • INKBOX_AGENT_HANDLE is optional; use it when already configured, otherwise ask the user which identity handle to use or create

Runtime setup

Do not assume @inkbox/sdk is already installed in the skill folder.

When the SDK is missing, prefer a temporary disposable Node directory over modifying the workspace or skill folder. Use a flow like:

  1. Create a temporary directory
  2. Run npm init -y
  3. Run npm install @inkbox/sdk
  4. Write a small .mjs script there
  5. Run it with node

Only install dependencies into the skill folder or workspace if the user explicitly asks.

Use .mjs scripts with standard ESM imports. Avoid relying on tsx --eval or top-level-await snippets that may be runtime-fragile.

Install & Init

bash
npm install @inkbox/sdk

Requires Node.js ≥ 18. ESM module — no context manager needed:

js
import { Inkbox } from "@inkbox/sdk";

const inkbox = new Inkbox({ apiKey: process.env.INKBOX_API_KEY });

Constructor options: { apiKey: string, baseUrl?: string, timeoutMs?: number }

Core Model

Inkbox (org-level client)
├── .createIdentity(handle) → Promise<AgentIdentity>
├── .getIdentity(handle)    → Promise<AgentIdentity>
├── .listIdentities()       → Promise<AgentIdentitySummary[]>
├── .mailboxes              → MailboxesResource
├── .phoneNumbers           → PhoneNumbersResource
├── .vault                  → VaultResource
└── .createSigningKey()     → Promise<SigningKey>

AgentIdentity (identity-scoped helper)
├── .mailbox                → IdentityMailbox | null
├── .phoneNumber            → IdentityPhoneNumber | null
├── .getCredentials()       → Promise<Credentials>  (requires vault unlocked)
├── mail methods            (requires assigned mailbox)
└── phone methods           (requires assigned phone number)

An identity must have a channel assigned before you can use mail/phone methods. If not assigned, an InkboxAPIError is thrown.

Identities

js
const identity = await inkbox.createIdentity("sales-agent");
const identity = await inkbox.getIdentity("sales-agent");
const identities = await inkbox.listIdentities();   // AgentIdentitySummary[]

await identity.update({ newHandle: "new-name" });   // rename
await identity.update({ status: "paused" });         // or "active"
await identity.refresh();                            // re-fetch from API, updates cached channels
await identity.delete();                             // unlinks channels

If INKBOX_AGENT_HANDLE is not configured, ask the user for the handle to use.

After creating a new identity:

  • show the handle and mailbox address to the user
  • ask whether they want to save the handle in skills.entries.<skill>.env.INKBOX_AGENT_HANDLE
  • do not store the API key in plaintext config; prefer skills.entries.<skill>.apiKey with a SecretRef to INKBOX_API_KEY

Channel Management

js
// Create and auto-link new channels
const mailbox  = await identity.createMailbox({ displayName: "Sales Agent" });
const phone    = await identity.provisionPhoneNumber({ type: "toll_free" });   // or type: "local", state: "NY"

console.log(mailbox.emailAddress);   // e.g. "abc-xyz@inkboxmail.com"
console.log(phone.number);           // e.g. "+18005551234"

// Link existing channels
await identity.assignMailbox("mailbox-uuid");
await identity.assignPhoneNumber("phone-number-uuid");

// Unlink without deleting
await identity.unlinkMailbox();
await identity.unlinkPhoneNumber();

Mail

Send

Before sending, confirm recipients, subject, and body with the user.

js
const sent = await identity.sendEmail({
  to: ["user@example.com"],
  subject: "Hello",
  bodyText: "Hi there!",           // plain text (optional)
  bodyHtml: "<p>Hi there!</p>",    // HTML (optional)
  cc: ["cc@example.com"],          // optional
  bcc: ["bcc@example.com"],        // optional
  inReplyToMessageId: sent.id,     // for threaded replies
  attachments: [{                  // optional
    filename: "report.pdf",
    contentType: "application/pdf",
    contentBase64: "<base64>",
  }],
});
Read
js
// Iterate all messages — auto-paginated async generator
for await (const msg of identity.iterEmails()) {
  console.log(msg.subject, msg.fromAddress, msg.isRead);
}

// Filter by direction
for await (const msg of identity.iterEmails({ direction: "inbound" })) {   // or "outbound"
  ...
}

// Unread only (client-side filtered)
for await (const msg of identity.iterUnreadEmails()) {
  ...
}

// Mark as read
const ids = [];
for await (const msg of identity.iterUnreadEmails()) ids.push(msg.id);
await identity.markEmailsRead(ids);

// Get full thread (oldest-first)
const thread = await identity.getThread(msg.threadId);
for (const m of thread.messages) {
  console.log(`[${m.fromAddress}] ${m.subject}`);
}
js
// Org-level mailbox search
const results = await inkbox.mailboxes.search(identity.mailbox.emailAddress, {
  q: "invoice",
  limit: 20,
});

This operation requires the identity to already have a mailbox provisioned.

Phone

js
// Place outbound call — stream audio via WebSocket
const call = await identity.placeCall({
  toNumber: "+15167251294",
  clientWebsocketUrl: "wss://your-agent.example.com/ws",
});
console.log(call.status);
console.log(call.rateLimit.callsRemaining);   // rolling 24h budget

// List calls (offset pagination)
const calls = await identity.listCalls({ limit: 10, offset: 0 });
for (const c of calls) {
  console.log(c.id, c.direction, c.remotePhoneNumber, c.status);
}

// Transcript segments (ordered by seq)
const segments = await identity.listTranscripts(calls[0].id);
for (const t of segments) {
  console.log(`[${t.party}] ${t.text}`);   // party: "local" or "remote"
}

Always confirm before placing a call.

Vault

Encrypted credential vault with client-side Argon2id key derivation and AES-256-GCM encryption. The server never sees plaintext secrets. Requires hash-wasm (included as a dependency).

Unlock & Read
js
import type { LoginPayload, APIKeyPayload, SSHKeyPayload, OtherPayload } from "@inkbox/sdk";

// Unlock with a vault key — derives key via Argon2id, decrypts all secrets
const unlocked = await inkbox.vault.unlock("my-Vault-key-01!");

// Optionally filter to secrets an agent identity has access to
const unlocked = await inkbox.vault.unlock("my-Vault-key-01!", { identityId: "agent-uuid" });

// All decrypted secrets from the unlock bundle
for (const secret of unlocked.secrets) {
  console.log(secret.name, secret.secretType);
  console.log(secret.payload);   // LoginPayload, APIKeyPayload, SSHKeyPayload, or OtherPayload
}

// Fetch and decrypt a single secret by ID
const secret = await unlocked.getSecret("secret-uuid");
const login = secret.payload as LoginPayload;
console.log(login.username, login.password);
Create & Update
js
// Create a login secret (secretType inferred from payload shape)
await unlocked.createSecret({
  name: "AWS Production",
  description: "Production IAM user",
  payload: { password: "s3cret", username: "admin", url: "https://aws.amazon.com" },
});

// Create an API key secret
await unlocked.createSecret({
  name: "GitHub PAT",
  payload: { apiKey: "ghp_xxx" },
});

// Create an SSH key secret
await unlocked.createSecret({
  name: "Deploy Key",
  payload: { privateKey: "-----BEGIN OPENSSH PRIVATE KEY-----..." },
});

// Create a freeform secret
await unlocked.createSecret({
  name: "Misc",
  payload: { data: "any freeform content" },
});

// Update name/description and/or re-encrypt payload
await unlocked.updateSecret("secret-uuid", { name: "New Name" });
await unlocked.updateSecret("secret-uuid", {
  payload: { password: "new", username: "new" },
});

// Delete
await unlocked.deleteSecret("secret-uuid");
Metadata (no unlock needed)
js
const info    = await inkbox.vault.info();                                  // VaultInfo
const keys    = await inkbox.vault.listKeys();                              // VaultKey[]
const keys    = await inkbox.vault.listKeys({ keyType: "recovery" });       // filter by type
const secrets = await inkbox.vault.listSecrets();                           // VaultSecret[] (metadata only)
const secrets = await inkbox.vault.listSecrets({ secretType: "login" });    // filter by type
await inkbox.vault.deleteSecret("secret-uuid");                             // delete without unlocking
Payload Types
TypeInterfaceFields
loginLoginPayloadpassword, username?, email?, url?, notes?, totp?
api_keyAPIKeyPayloadapiKey, endpoint?, notes?
key_pairKeyPairPayloadaccessKey, secretKey, endpoint?, notes?
ssh_keySSHKeyPayloadprivateKey, publicKey?, fingerprint?, passphrase?, notes?
otherOtherPayloaddata

secretType is immutable after creation. To change it, delete and recreate.

Agent Credentials (identity-scoped)

Agent-facing credential access — typed, identity-scoped. The vault stays as the admin surface; identity.getCredentials() is the agent runtime surface.

js
import type { Credentials } from "@inkbox/sdk";

// Unlock the vault first (stores state on the client)
await inkbox.vault.unlock("my-Vault-key-01!");

const identity = await inkbox.getIdentity("support-bot");
const creds = await identity.getCredentials();

// Discovery — returns DecryptedVaultSecret[] with name/metadata
const allCreds = creds.list();
const logins   = creds.listLogins();
const apiKeys  = creds.listApiKeys();
const sshKeys  = creds.listSshKeys();

// Access by UUID — returns typed payload directly
const login  = creds.getLogin("secret-uuid");    // → LoginPayload
const apiKey = creds.getApiKey("secret-uuid");    // → APIKeyPayload
const sshKey = creds.getSshKey("secret-uuid");    // → SSHKeyPayload

// Generic access — returns DecryptedVaultSecret
const secret = creds.get("secret-uuid");
  • Requires inkbox.vault.unlock() first — throws InkboxAPIError if vault is not unlocked
  • Results are filtered to secrets the identity has access to (via access rules)
  • Cached after first call; call identity.refresh() to clear the cache
  • get* throws Error if not found, TypeError if wrong secret type
Show full SKILL.md (262 more words)Show less
One-Time Passwords (TOTP)

TOTP secrets are stored inside LoginPayload.totp in the encrypted vault. Codes are generated client-side — no server call needed.

js
import { parseTotpUri } from "@inkbox/sdk";
import type { LoginPayload } from "@inkbox/sdk";

// Create a login with TOTP
const secret = await identity.createSecret({
  name: "GitHub",
  payload: {
    username: "user@example.com",
    password: "s3cret",
    totp: parseTotpUri("otpauth://totp/GitHub:user@example.com?secret=JBSWY3DPEHPK3PXP&issuer=GitHub"),
  } satisfies LoginPayload,
});

// Generate TOTP code
const code = await identity.getTotpCode(secret.id);
console.log(code.code);              // e.g. "482901"
console.log(code.secondsRemaining);  // e.g. 17

// Add/replace TOTP on existing login
await identity.setTotp(secretId, "otpauth://totp/...?secret=...");

// Remove TOTP
await identity.removeTotp(secretId);
From the unlocked vault (org-level)
js
const unlocked = await inkbox.vault.unlock("my-Vault-key-01!");

// Same methods available on UnlockedVault
await unlocked.setTotp(secretId, totpConfigOrUri);
await unlocked.removeTotp(secretId);
const code = await unlocked.getTotpCode(secretId);
TOTPCode fields
FieldTypeDescription
codestringThe OTP code (e.g. "482901")
periodStartnumberUnix timestamp when the code became valid
periodEndnumberUnix timestamp when the code expires
secondsRemainingnumberSeconds until expiry

Org-level Resources

Mailboxes (inkbox.mailboxes)
js
const mailboxes = await inkbox.mailboxes.list();
const mailbox   = await inkbox.mailboxes.get("abc@inkboxmail.com");
const mb        = await inkbox.mailboxes.create({ agentHandle: "support", displayName: "Support Inbox" });

await inkbox.mailboxes.update(mb.emailAddress, { displayName: "New Name" });
await inkbox.mailboxes.update(mb.emailAddress, { webhookUrl: "https://example.com/hook" });
await inkbox.mailboxes.update(mb.emailAddress, { webhookUrl: null });   // remove webhook

const results = await inkbox.mailboxes.search(mb.emailAddress, { q: "invoice", limit: 20 });
await inkbox.mailboxes.delete(mb.emailAddress);
Phone Numbers (inkbox.phoneNumbers)
js
const numbers = await inkbox.phoneNumbers.list();
const number  = await inkbox.phoneNumbers.get("phone-number-uuid");
const num     = await inkbox.phoneNumbers.provision({ agentHandle: "my-agent", type: "toll_free" });
const local   = await inkbox.phoneNumbers.provision({ agentHandle: "my-agent", type: "local", state: "NY" });

await inkbox.phoneNumbers.update(num.id, {
  incomingCallAction: "webhook",               // "webhook", "auto_accept", or "auto_reject"
  incomingCallWebhookUrl: "https://...",
});
await inkbox.phoneNumbers.update(num.id, {
  incomingCallAction: "auto_accept",
  clientWebsocketUrl: "wss://...",
});

const hits = await inkbox.phoneNumbers.searchTranscripts(num.id, { q: "refund", party: "remote", limit: 50 });
await inkbox.phoneNumbers.release(num.id);

Webhooks & Signature Verification

Webhooks are configured directly on the mailbox or phone number — no separate registration.

js
import { verifyWebhook } from "@inkbox/sdk";

// Rotate signing key (plaintext returned once — save it)
const key = await inkbox.createSigningKey();

// Verify an incoming webhook request
const valid = verifyWebhook({
  payload: req.body,                                           // Buffer or string
  headers: req.headers as Record<string, string>,
  secret: "whsec_...",
});

Headers checked: x-inkbox-signature, x-inkbox-request-id, x-inkbox-timestamp. Algorithm: HMAC-SHA256 over "{requestId}.{timestamp}.{body}".

Error Handling

js
import { InkboxAPIError } from "@inkbox/sdk";

try {
  const identity = await inkbox.getIdentity("unknown");
} catch (e) {
  if (e instanceof InkboxAPIError) {
    console.log(e.statusCode);   // HTTP status (e.g. 404)
    console.log(e.detail);       // message from API
  }
}
  • If Inkbox returns 401 Unauthorized, tell the user the API key was rejected and ask them to verify or rotate INKBOX_API_KEY
  • If INKBOX_AGENT_HANDLE is missing, ask the user which identity to use or create one first
  • If an operation needs mailbox or phone provisioning that does not yet exist, explain what is missing and stop before guessing

Key Conventions

  • All method and property names are camelCase
  • iterEmails() / iterUnreadEmails() return AsyncGenerator<Message> — use for await...of
  • listCalls() returns Promise<PhoneCall[]> — offset pagination, not a generator
  • To clear a nullable field (e.g. webhook URL), pass field: null
  • No context manager needed — new Inkbox({...}) is all that's required
  • All methods are async and return Promises — always await them
  • Confirm before sending emails or placing calls
  • Thread IDs come from message objects (threadId)
  • Message IDs can be used for inReplyToMessageId
  • Phone numbers must be in E.164 format (for example +15551234567)
  • The identity must have a phone number assigned for phone operations
  • Call IDs from listCalls can be passed to listTranscripts

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

Files

SKILL.md and 3 other files in skills/inkbox of LeoYeAI/openclaw-master-skills.

  • SKILL.md
  • README.md
  • _meta.json
  • package.json

Open the folder on GitHubat commit e5199b5

Compare with similar skills

Inkbox next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Inkbox compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Inkbox this skillLeoYeAI/openclaw-master-skills2.2k—~4.1kAutomated safety check: PassMIT
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Ads Desk Standupmarkfulton/ai-employees543—~20kAutomated safety check: PassMIT
Spark Persona Team Leadreaddle/spark-cli-skills149—~923Automated safety check: PassMIT
Csat Desk Standupmarkfulton/ai-employees543—~20kAutomated safety check: PassMIT
Gtm Board Standupmarkfulton/ai-employees543—~19kAutomated safety check: PassMIT

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Questions about Inkbox

What does Inkbox do?

Send and receive emails and phone calls via Inkbox agent identities. Inkbox is an agent skill from LeoYeAI/openclaw-master-skills. Send and receive emails and phone calls via Inkbox agent identities.

When should I use Inkbox?

Inkbox fits situations like: the user wants to check inbox messages; list unread email; search mailbox contents; draft/send an email.

How do I install Inkbox in Claude Code?

Run `npx skills add LeoYeAI/openclaw-master-skills --skill inkbox -a claude-code`. Or copy the skill folder (skills/inkbox in LeoYeAI/openclaw-master-skills) into .claude/skills/inkbox in your project. Claude Code loads it when a task matches its description.

How do I install Inkbox in Codex?

Run `npx skills add LeoYeAI/openclaw-master-skills --skill inkbox -a codex`. Or copy the skill folder (skills/inkbox in LeoYeAI/openclaw-master-skills) into .agents/skills/inkbox in your project. Codex loads it when a task matches its description.

Can I use Inkbox in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add LeoYeAI/openclaw-master-skills --skill inkbox -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/inkbox, .gemini/skills/inkbox, .github/skills/inkbox and .opencode/skills/inkbox in your project.

What does Inkbox need to run?

Going by SKILL.md and its folder, Inkbox needs the command-line tools its instructions call (npm and tsx) and credentials named INKBOX_API_KEY. Our summary lists: Node.js; A credential in INKBOX_API_KEY.

Does Inkbox access the network?

SKILL.md names 1 domain. In commands or code: aws.amazon.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Inkbox safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Inkbox use?

Inkbox is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Inkbox use?

About 4.1k tokens (SKILL.md is roughly 16k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Inkbox?

Skills that share tags, products or a category with Inkbox: Mail Transcripts (benoror/obsidianos_work, 165 stars), Ads Desk Standup (markfulton/ai-employees, 543 stars), Spark Persona Team Lead (readdle/spark-cli-skills, 149 stars) and Csat Desk Standup (markfulton/ai-employees, 543 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Inkbox?

LeoYeAI (a GitHub user) maintains it in LeoYeAI/openclaw-master-skills, which has 2,161 GitHub stars. The repository holds 1,235 skills in this directory. The repository was last updated on July 20, 2026.

Source: LeoYeAI/openclaw-master-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.