Agent skill

Flexport Local Dev Loop

by jeremylongshore in jeremylongshore/tons-of-skills-marketplace

Develop Flexport integrations locally with sanitized contract fixtures and explicit live-test boundaries.

MITAuto-check passedBackend & APIs

Install Flexport Local Dev Loop

skills CLI
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill flexport-local-dev-loop -a claude-code

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

GitHub CLI
$ gh skill install jeremylongshore/tons-of-skills-marketplace flexport-local-dev-loop --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/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/.curated/flexport-local-dev-loop .claude/skills/flexport-local-dev-loop && 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
flexport-local-dev-loop
GitHub stars
2.8k
Token cost
~1.1k tokens
SKILL.md length
412 words
Files
2 (incl. references)
Skills in repo
3,342
Repo updated
First seen
Licence
MIT

At a glance

Develop Flexport integrations locally with sanitized contract fixtures and explicit live-test boundaries.

  • Works in 6 steps: Choose one contract → Capture shape, not data → Test invariants → …
  • Implementing REST v3 parsers
  • SKILL.md covers Overview, Prerequisites, Instructions and Authentication, plus 5 more sections
  • Reaches api.flexport.com and mcp.flexport.com

What it does

Flexport Local Dev Loop is an agent skill from jeremylongshore/tons-of-skills-marketplace. Develop Flexport integrations locally with sanitized contract fixtures and explicit live-test boundaries. Use when implementing REST v3 parsers, MCP tool adapters, webhook verification, or failure handling. Trigger with: "develop Flexport locally", "mock Flexport API", "test Flexport webhook".

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/official-docs.md`). Compatibility notes: Requires a local test runner and sanitized fixtures; live credentials are optional and must use an approved account.

It sits in Backend & APIs, covering Webhooks, MCP servers and API testing. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.

When your agent uses it

  • Implementing REST v3 parsers
  • MCP tool adapters
  • Webhook verification
  • Failure handling

Example prompts

  • “develop Flexport locally”
  • “mock Flexport API”
  • “test Flexport webhook”
  • “/flexport-local-dev-loop”

Requirements

  • Compatibility (from SKILL.md): Requires a local test runner and sanitized fixtures; live credentials are optional and must use an approved account.
  • Pre-approved tools (allowed-tools): Read, Grep, Write, Edit

Workflow steps

6 steps, taken from the step headings in SKILL.md.

  1. Choose one contract
  2. Capture shape, not data
  3. Test invariants
  4. Exercise raw webhooks
  5. Gate live checks
  6. Promote the receipt

What it can do on your machine

Read from SKILL.md and the folder at commit 23ea8d4. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Grep
    • Write
    • Edit

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are yaml).

    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:

    • api.flexport.com
    • mcp.flexport.com

    Also links to:

    • apidocs.flexport.com

    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.

  • Compatibility

    Requires a local test runner and sanitized fixtures; live credentials are optional and must use an approved account.

    From compatibility in the SKILL.md frontmatter.

Context cost

Flexport Local Dev Loop loads about 1.1k tokens when it runs, and up to ~1.3k if it reads all its reference files. Until then it costs about 80 tokens; SKILL.md has 412 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~80
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.3k

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 jeremylongshore/tons-of-skills-marketplace at commit 23ea8d4, republished under its MIT licence (© jeremylongshore). 412 words, ~1,061 tokens.

Download SKILL.mdSave it as .claude/skills/flexport-local-dev-loop/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
flexport-local-dev-loop
description
Develop Flexport integrations locally with sanitized contract fixtures and explicit live-test boundaries. Use when implementing REST v3 parsers, MCP tool adapters, webhook verification, or failure handling. Trigger with: "develop Flexport locally", "mock Flexport API", "test Flexport webhook".
allowed-tools
Read, Grep, Write, Edit
compatibility
Requires a local test runner and sanitized fixtures; live credentials are optional and must use an approved account.
version
2.0.0
argument-hint
[surface-and-feature]
model
inherit
effort
high
license
MIT
author
Jeremy Longshore <jeremy@intentsolutions.io>
tags
saas, flexport, development, testing

Flexport Contract-Fixture Development Loop

Overview

Most development should run without credentials. Model official v3, MCP, and webhook shapes as fixtures, then use a separately approved read-only live smoke test only for gaps fixtures cannot prove.

Prerequisites

  • Current first-party schema pages and snapshot date
  • Sanitized success, pagination, additive-field, and error fixtures
  • Separate local secret injection and no-production-data rule

Instructions

Step 1: Choose one contract

Name the exact REST endpoint, MCP tool, or webhook event and expected business outcome.

Step 2: Capture shape, not data

Build synthetic fixtures from documented field names/types. Replace all identifiers, routes, parties, financials, and document content.

Step 3: Test invariants

Cover required fields, unknown additive fields, opaque cursors/links, status/code/message errors, and missing authorization.

Step 4: Exercise raw webhooks

Sign exact synthetic bytes with a test secret and test malformed, wrong-length, duplicate, and valid SHA-256 signatures before parsing.

Step 5: Gate live checks

If needed, use an approved credential for one read-only operation. Never create bookings, documents, purchase orders, or invoices from the local loop.

Step 6: Promote the receipt

Commit fixtures and assertions, not tokens or live payloads; record schema source and review date.

Authentication

REST calls authenticate with a cached OAuth 2.0 client-credentials Bearer token using audience https://api.flexport.com, or an explicitly accepted broad API key. Use distinct credentials per workload and never log credentials or tokens. MCP calls use the authenticated connection to https://mcp.flexport.com/mcp and remain subject to each tool's documented account permissions.

Show full SKILL.md (175 more words)Show less

Tool Discipline

Use Read and Grep for discovery and evidence. Use Write or Edit only for the approved artifact, code, configuration, test, or receipt described by this workflow; do not make an unapproved Flexport-side change.

Output

  • Scoped decision or implementation artifact
  • Redacted operation and validation receipt
  • Failure, rollback, and follow-up ownership record

Return a machine-reviewable receipt in this shape; adapt the operation values, but never place credentials or provider payloads in it:

yaml
surface: rest-v3
operation: shipment-read
decision: approved
outcome: verified
evidence:
  release_sha: recorded-out-of-band
  provider_reference: redacted
rollback_owner: logistics-platform

Examples

A developer implements browse_shipments pagination using synthetic end_cursor fixtures, adds an unknown field to prove tolerant parsing, and keeps the real MCP connection disabled in default tests.

Error Handling

FailureResponse
Fixture contains live dataReplace it with synthetic values and purge the original from artifacts.
Docs and observed shape differRecord a minimal field-name diff and verify version/account context.
Test requests a mutationBlock it at the adapter and require an explicit higher environment.
Credential discovered in repositoryRevoke or rotate, remove it from history, and repair secret injection.

Resources

© jeremylongshore, 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 1 other file (references) in skills/.curated/flexport-local-dev-loop of jeremylongshore/tons-of-skills-marketplace.

  • SKILL.md
  • references/official-docs.md

Open the folder on GitHubat commit 23ea8d4

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Categories

Questions about Flexport Local Dev Loop

What does Flexport Local Dev Loop do?

Develop Flexport integrations locally with sanitized contract fixtures and explicit live-test boundaries. Flexport Local Dev Loop is an agent skill from jeremylongshore/tons-of-skills-marketplace. Develop Flexport integrations locally with sanitized contract fixtures and explicit live-test boundaries.

When should I use Flexport Local Dev Loop?

Flexport Local Dev Loop fits situations like: implementing REST v3 parsers; MCP tool adapters; webhook verification; failure handling.

How do I install Flexport Local Dev Loop in Claude Code?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill flexport-local-dev-loop -a claude-code`. Or copy the skill folder (skills/.curated/flexport-local-dev-loop in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/flexport-local-dev-loop in your project. Claude Code loads it when a task matches its description.

How do I install Flexport Local Dev Loop in Codex?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill flexport-local-dev-loop -a codex`. Or copy the skill folder (skills/.curated/flexport-local-dev-loop in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/flexport-local-dev-loop in your project. Codex loads it when a task matches its description.

Can I use Flexport Local Dev Loop 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 jeremylongshore/tons-of-skills-marketplace --skill flexport-local-dev-loop -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/flexport-local-dev-loop, .gemini/skills/flexport-local-dev-loop, .github/skills/flexport-local-dev-loop and .opencode/skills/flexport-local-dev-loop in your project.

What does Flexport Local Dev Loop need to run?

SKILL.md names no scripts, command-line tools or credentials: Flexport Local Dev Loop is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Grep, Write, Edit. Compatibility (from SKILL.md): Requires a local test runner and sanitized fixtures; live credentials are optional and must use an approved account..

Does Flexport Local Dev Loop access the network?

SKILL.md names 3 domains. In commands or code: api.flexport.com and mcp.flexport.com; the agent is likely to contact these when it follows the instructions. As links in the text: apidocs.flexport.com. This is read from the text; nothing was executed.

Is Flexport Local Dev Loop 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 Flexport Local Dev Loop use?

Flexport Local Dev Loop is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Flexport Local Dev Loop use?

About 1.1k tokens (SKILL.md is roughly 4.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 216 tokens, read only when the agent opens those files.

What are the alternatives to Flexport Local Dev Loop?

Skills that share tags, products or a category with Flexport Local Dev Loop: X Twitter Scraper (Xquik-dev/x-twitter-scraper, 209 stars), Zalo Agent (PhucMPham/zalo-agent-cli, 163 stars), Yolfi Payments (yolfinance/yolfi-agent, 178 stars) and Frontmcp Channels (agentfront/frontmcp, 146 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Flexport Local Dev Loop?

jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,821 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 8, 2026.

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