Brightdata Local Dev Loop

What it does

When your agent uses it

• Implementing parsers
• Retry classification
• Snapshot handling without spending credits
• Collecting data

Example prompts

• “mock Bright Data locally”
• “test a Bright Data adapter offline”
• “add a safe live-test switch”
• “/brightdata-local-dev-loop”

Requirements

• Compatibility (from SKILL.md): Requires an approved Bright Data account or offline fixtures, current Bright Data documentation, and an authorized public-data collection purpose
• Pre-approved tools (allowed-tools): Read, Grep, Write, Edit, Bash(npm:*)

Workflow steps

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

1. 1Map the boundary
2. 2Create explicit modes
3. 3Test contract behavior
4. 4Run the loop

What it can do on your machine

Read from SKILL.md and the folder at commit 80f86df. 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
  • Bash(npm:*)

  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

  Links to these hosts (documentation or services it may open):

  • docs.brightdata.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 an approved Bright Data account or offline fixtures, current Bright Data documentation, and an authorized public-data collection purpose

  From compatibility in the SKILL.md frontmatter.

Context cost

Brightdata Local Dev Loop loads about 917 tokens when it runs, and up to ~1.1k if it reads all its reference files. Until then it costs about 92 tokens; SKILL.md has 325 words of instructions outside code blocks.

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

~92

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

~917

With references · SKILL.md plus every file in references/, read only if the agent opens them

~1.1k

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 jeremylongshore/tons-of-skills-marketplace at commit 80f86df, republished under its MIT licence (© jeremylongshore). 325 words, ~917 tokens.

name

brightdata-local-dev-loop

description

Build a local Bright Data development loop that defaults to synthetic fixtures and makes live traffic explicit. Use when implementing parsers, retry classification, or snapshot handling without spending credits or collecting data. Trigger with: "mock Bright Data locally", "test a Bright Data adapter offline", "add a safe live-test switch".

allowed-tools

Read, Grep, Write, Edit, Bash(npm:*)

compatibility

Requires an approved Bright Data account or offline fixtures, current Bright Data documentation, and an authorized public-data collection purpose

version

2.0.0

argument-hint

[adapter-path]

model

inherit

effort

high

license

MIT

author

Jeremy Longshore <jeremy@intentsolutions.io>

tags

saas, web-data, bright-data, local-dev-loop, operations

brightdata:
  mode: fixture
  live_requires:
    - BRIGHTDATA_LIVE_TEST=1
    - approved_target_manifest
    - bounded_cost_budget

© 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/brightdata-local-dev-loop of jeremylongshore/tons-of-skills-marketplace.

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

Open the folder on GitHubat commit 80f86df