Agent skill

Lob

by Anil-matcha in Anil-matcha/awesome-muse-connectors

Print and mail physical letters and postcards through Lob, verify US addresses, and cancel pieces before production.

MITAuto-check passed

Install Lob

skills CLI

$ npx skills add Anil-matcha/awesome-muse-connectors --skill lob -a claude-code

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

GitHub CLI

$ gh skill install Anil-matcha/awesome-muse-connectors lob --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/Anil-matcha/awesome-muse-connectors.git skills-src && mkdir -p .claude/skills && cp -r skills-src/connectors/lob .claude/skills/lob && 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/

Paste into Claude Code

Install the "lob" agent skill from https://github.com/Anil-matcha/awesome-muse-connectors/tree/main/connectors/lob into .claude/skills/lob/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lob", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/Anil-matcha/awesome-muse-connectors/tree/main/connectors/lob

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add Anil-matcha/awesome-muse-connectors --skill lob -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install Anil-matcha/awesome-muse-connectors lob --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Anil-matcha/awesome-muse-connectors.git skills-src && mkdir -p .agents/skills && cp -r skills-src/connectors/lob .agents/skills/lob && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "lob" agent skill from https://github.com/Anil-matcha/awesome-muse-connectors/tree/main/connectors/lob into .agents/skills/lob/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lob", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Anil-matcha/awesome-muse-connectors --skill lob -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install Anil-matcha/awesome-muse-connectors lob --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Anil-matcha/awesome-muse-connectors.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/connectors/lob .cursor/skills/lob && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "lob" agent skill from https://github.com/Anil-matcha/awesome-muse-connectors/tree/main/connectors/lob into .cursor/skills/lob/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lob", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/Anil-matcha/awesome-muse-connectors.git --path connectors/lob

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add Anil-matcha/awesome-muse-connectors --skill lob -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install Anil-matcha/awesome-muse-connectors lob --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Anil-matcha/awesome-muse-connectors.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/connectors/lob .gemini/skills/lob && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "lob" agent skill from https://github.com/Anil-matcha/awesome-muse-connectors/tree/main/connectors/lob into .gemini/skills/lob/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lob", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install Anil-matcha/awesome-muse-connectors lob

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add Anil-matcha/awesome-muse-connectors --skill lob -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/Anil-matcha/awesome-muse-connectors.git skills-src && mkdir -p .github/skills && cp -r skills-src/connectors/lob .github/skills/lob && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "lob" agent skill from https://github.com/Anil-matcha/awesome-muse-connectors/tree/main/connectors/lob into .github/skills/lob/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lob", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Anil-matcha/awesome-muse-connectors --skill lob -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install Anil-matcha/awesome-muse-connectors lob --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Anil-matcha/awesome-muse-connectors.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/connectors/lob .opencode/skills/lob && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "lob" agent skill from https://github.com/Anil-matcha/awesome-muse-connectors/tree/main/connectors/lob into .opencode/skills/lob/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lob", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: lob
GitHub stars: 1.3k
Token cost: ~1k tokens
SKILL.md length: 368 words
Files: 2
Skills in repo: 153
Repo updated: Oct 5, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Print and mail physical letters and postcards through Lob, verify US addresses, and cancel pieces before production.

Works in 5 steps: Test keys are the default path. With a… → Live sends are a HIGH actuation: POST… → Cancellation only works pre-production.… → …
SKILL.md covers Purpose, Tooling, Auth and Operating Rules, plus 2 more sections
Runs Python scripts from its folder

What it does

Lob is an agent skill from Anil-matcha/awesome-muse-connectors. Print and mail physical letters and postcards through Lob, verify US addresses, and cancel pieces before production. Trigger phrases: lob, send postcard, send letter, direct mail, print and mail.

Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `bin/lob.py`).

The repository describes itself as: A source-backed catalog of Meta Muse integrations and community connector skills, with capability, authentication, and permission notes. The licence is MIT.

Example prompts

“/lob”

Requirements

Python 3

Workflow steps

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

Test keys are the default path. With a test_ key the full lifecycle is simulated free. Never send real mail on a test run.
Live sends are a HIGH actuation: POST /postcards and POST /letters with a live key print a physical piece, hand it to the postal stream…
Cancellation only works pre-production. DELETE /postcards/{id} and DELETE /letters/{id} cancel a piece only while it is still in a…
Per-piece pricing: printing plus postage are charged per piece on live keys; current prices are published on lob.com. Always state the…
Never exfiltrate the credential: the CLI only ever handles surrogates (see bin/lob.py). Do not print, log, or transmit the key value.

What it can do on your machine

Read from SKILL.md and the folder at commit d6dc5d8. 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
Ships script files (Python), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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

Lob loads about 1k tokens when it runs. Until then it costs about 50 tokens; SKILL.md has 368 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~50
When it runs · the whole SKILL.md, loaded when a task matches: ~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 Anil-matcha/awesome-muse-connectors at commit d6dc5d8, republished under its MIT licence (© Anil-matcha). 368 words, ~1,006 tokens.

Download SKILL.mdSave it as .claude/skills/lob/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.

name: lob
description: Print and mail physical letters and postcards through Lob, verify US addresses, and cancel pieces before production. Trigger phrases: lob, send postcard, send letter, direct mail, print and mail.
metadata.includeInPrompt: true
tagline: Send physical mail through Lob's Print and Mail API: verify US addresses; create postcards and letters that get printed and mailed; list what was sent; cancel…
catalog_auth: API key via the secure credential flow
catalog_hosts: api.lob.com

Lob

Purpose

Send physical mail through Lob's Print and Mail API: verify US addresses; create postcards and letters that get printed and mailed; list what was sent; cancel a piece while it is still before production. Reach for this when the user wants a real letter or postcard in the mail rather than an email.

Tooling

All commands go through bin/lob.py:

bash

bin/lob.py auth                                   # verify the API key
bin/lob.py verify-address --file address.json     # verify/correct a US address (no mail sent)
bin/lob.py send-postcard --file postcard.json \
    --confirm "mail postcard to Jane Doe at 123 Main St"   # send a postcard (test key: simulated)
bin/lob.py send-letter --file letter.json \
    --confirm "mail letter to Jane Doe at 123 Main St"     # send a letter (test key: simulated)
bin/lob.py send-postcard --file postcard.json --live \
    --confirm "mail postcard to Jane Doe at 123 Main St"   # production key path: --live AND --confirm
bin/lob.py postcards                               # list postcards
bin/lob.py get-letter --id ltr_abc123             # retrieve a letter
bin/lob.py cancel-postcard --id psc_abc123        # cancel before production (no effect after)
bin/lob.py cancel-letter --id ltr_abc123          # cancel before production (no effect after)

postcard.json / letter.json hold the Lob create payloads (to, from, front/back HTML or template, size). Address verification never sends anything.

Auth

Provider id: lob (credential is collected as custom.lob)
Collection: API key via the secure credential flow (credentials.request_api_access); issued in the Lob dashboard
Auth scheme: HTTP Basic with the API key as the username and a blank password; placement is resolved by the helper from the credential config
Allowed hosts: api.lob.com
Status check: bin/lob.py auth
Key types: keys beginning test_ simulate the full lifecycle free (nothing printed, nothing charged). Keys beginning live_ print and mail for real.

Operating Rules

Test keys are the default path. With a test_ key the full lifecycle is simulated free. Never send real mail on a test run.
Live sends are a HIGH actuation: POST /postcards and POST /letters with a live key print a physical piece, hand it to the postal stream, and charge printing plus postage per piece. Once a piece enters production it cannot be recalled. The CLI enforces the gate: --live (your explicit acknowledgment that the stored key is live and real mail will go out) AND --confirm with the exact string the CLI echoes (recipient and address) are both required. The string must match exactly.
Cancellation only works pre-production. DELETE /postcards/{id} and DELETE /letters/{id} cancel a piece only while it is still in a cancellable state; after production starts they do nothing and spent fees are not refunded.
Per-piece pricing: printing plus postage are charged per piece on live keys; current prices are published on lob.com. Always state the piece count and type when confirming a send.
Never exfiltrate the credential: the CLI only ever handles surrogates (see bin/lob.py). Do not print, log, or transmit the key value.

Show full SKILL.md (15 more words)Show less

Files

SKILL.md
bin/lob.py

Maturity

Draft: written from Lob's public API docs; not yet live-tested end-to-end.

Files

SKILL.md and 1 other file in connectors/lob of Anil-matcha/awesome-muse-connectors.

SKILL.md
bin/lob.py

Open the folder on GitHubat commit d6dc5d8

Compare with similar skills

Lob 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.

Lob compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Lob this skillAnil-matcha/awesome-muse-connectors	1.3k	—	~1k	Automated safety check: Pass	MIT	4 days ago
Mails So AutomationComposioHQ/awesome-claude-skills	77k	3 repos	~734	Automated safety check: Pass	None	22 days ago
CSS Printthedaviddias/Front-End-Checklist	74k	—	~422	Automated safety check: Pass	MIT	3 days ago
Physical Addressthedaviddias/Front-End-Checklist	74k	—	~574	Automated safety check: Pass	MIT	3 days ago
Physical Review Lettersfranklee16/academic-research-skills	223	1 repos	~2.1k	Automated safety check: Pass	None	21 days ago
Send Mailhashgraph-online/awesome-codex-plugins	1.3k	—	~1.8k	Automated safety check: Pass	Apache-2.0	today

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Questions about Lob

What does Lob do?

Print and mail physical letters and postcards through Lob, verify US addresses, and cancel pieces before production. Lob is an agent skill from Anil-matcha/awesome-muse-connectors. Print and mail physical letters and postcards through Lob, verify US addresses, and cancel pieces before production.

How do I install Lob in Claude Code?

Run `npx skills add Anil-matcha/awesome-muse-connectors --skill lob -a claude-code`. Or copy the skill folder (connectors/lob in Anil-matcha/awesome-muse-connectors) into .claude/skills/lob in your project. Claude Code loads it when a task matches its description.

How do I install Lob in Codex?

Run `npx skills add Anil-matcha/awesome-muse-connectors --skill lob -a codex`. Or copy the skill folder (connectors/lob in Anil-matcha/awesome-muse-connectors) into .agents/skills/lob in your project. Codex loads it when a task matches its description.

Can I use Lob 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 Anil-matcha/awesome-muse-connectors --skill lob -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/lob, .gemini/skills/lob, .github/skills/lob and .opencode/skills/lob in your project.

What does Lob need to run?

Going by SKILL.md and its folder, Lob needs Python for the scripts in its folder. Our summary lists: Python 3.

Does Lob access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Lob 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 Lob use?

Lob 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 Lob use?

About 1k tokens (SKILL.md is roughly 4k 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 Lob?

Skills that share tags, products or a category with Lob: Mails So Automation (ComposioHQ/awesome-claude-skills, 77k stars), CSS Print (thedaviddias/Front-End-Checklist, 74k stars), Physical Address (thedaviddias/Front-End-Checklist, 74k stars) and Physical Review Letters (franklee16/academic-research-skills, 223 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Lob?

Anil-matcha (a GitHub user) maintains it in Anil-matcha/awesome-muse-connectors, which has 1,347 GitHub stars. The repository holds 153 skills in this directory. The repository was last updated on October 5, 2026.

Source: Anil-matcha/awesome-muse-connectors on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Lob

Install Lob

Facts

At a glance

What it does

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Lob

Purpose

Tooling

Auth

Operating Rules

Files

Maturity

Files

Compare with similar skills

Similar skills

Mails So Automation

CSS Print

Physical Address

Physical Review Letters

Send Mail

Agent Mail Automation

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Questions about Lob