Fayeblade_mcp: Instructions file for GitHub Copilot

.github/copilot-instructions.md

Fayeblade_mcp copilot-instructions.md is an instructions file for GitHub Copilot from Fayeblade1488/Fayeblade_mcp. It costs 1,074 tokens per session, scanned A, original, MIT.

A set of coding instructions for Fayeblade MCP, a bridge that lets an MCP-capable assistant control a Chromium browser through Playwright, a browser automation library.

In plain words
What is it for?
Use it when working on this repository's browser navigation, screenshots, queries, message framing, or optional saved browser sessions.
Why use it?
It defines the repository's purpose, file boundaries, supported browser methods, and rules against inventing unsupported features. This helps an assistant make changes in the correct places.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is Fayeblade1488/Fayeblade_mcp's own configuration. It tells GitHub Copilot how to work on Fayeblade_mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Fayeblade_mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Fayeblade1488/Fayeblade_mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Fayeblade1488/Fayeblade_mcp/main/.github/copilot-instructions.md
Clone the repo
git clone --depth 1 https://github.com/Fayeblade1488/Fayeblade_mcp

Made for: GitHub Copilot.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

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README.md
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Your own site
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/fayeblade1488/fayeblade_mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/fayeblade1488/fayeblade_mcp/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,074 This file is loaded in full into every session.
When invoked 1,074 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.01074 $0.01074
Opus 5.5 $0.00430 $0.00430
Sonnet 5.5 $0.00215 $0.00215
Haiku 4.5 $0.00107 $0.00107

Measured 2mo ago against content hash 829286146852, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Fayeblade_mcp copilot-instructions.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.github/copilot-instructions.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Copilot Instructions — Venice Browser MCP Bridge

This document defines the precise operational guardrails for GitHub Copilot (or any LLM-based assistant) when interacting with this repository.

1. Purpose of This Repo

•	This repo implements a Browser MCP Bridge that connects Venice.ai (or any MCP-capable host) to a Chromium browser via Playwright.
•	Core features:
•	Framing modes: line (newline JSON) or content-length (hard MCP).
•	Persistence: optional browser session persistence with storage_state (cookies, localStorage).
•	Methods: browser.navigate, browser.screenshot, browser.query.

Copilot must not hallucinate features beyond these.

⸻

2. File Boundaries

Copilot must strictly respect file roles: • src/venice_browser_mcp_v23_impl.py → Full v2.3 implementation. Do not duplicate functionality here. Only modify if explicitly instructed. • src/venice_browser_mcp_core.py → Minimal adapter; only ever call run_main() from v23 impl. Do not add extra logic. • src/venice_browser_mcp.py → CLI wrapper. Allowed to set env vars and call into core. Do not inline the v23 logic here. • examples/ → Minimal toy hosts only. Do not add production logic here. • docs/ARCHITECTURE.md → Architectural overview. Copilot should not drift into API tutorials or usage duplication already in README.md. • README.md → Authoritative source for installation, usage, troubleshooting. Copilot must check this before suggesting usage patterns.

⸻

3. Code Style Rules

•	Language: Python 3.9+ only.
•	Asynchronous style: always use async/await with Playwright. Do not introduce sync Playwright calls.
•	Logging: prefer writing to stderr for debugging; never pollute stdout (reserved for MCP messages).
•	Encoding: all messages are UTF-8 JSON. Copilot must never suggest mixing bytes vs str without explicit .encode()/.decode().
•	Dependencies: limited to playwright. Do not suggest external libraries for framing or JSON-RPC.

⸻

4. Behavior Rules

•	Framing:
•	If MCP_FRAMING=line, messages are one JSON object per line.
•	If MCP_FRAMING=content-length, messages must have exact Content-Length: N\r\n\r\n headers with N = byte length of JSON body.
•	Persistence:
•	If MCP_PERSIST_CONTEXT=1, reuse a single BrowserContext and load/save storage state.
•	Never create multiple persistent contexts.
•	Storage is always JSON at the path given by MCP_STORAGE_STATE.
•	Methods contract:
•	browser.navigate: returns text/html (truncated if > MAX_CONTENT_CHARS), links, meta.
•	browser.screenshot: returns base64 PNG. Must fail gracefully if > MAX_BASE64_BYTES.
•	browser.query: returns node text or HTML.
•	Error handling:
•	Always return JSON-RPC error envelopes (id, error.code, error.message, optional error.data).
•	Never crash with raw Python exceptions on stdout.

Read the full file on GitHub · 106 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 106 lines · 1,074 tokens per session scan A 829286146852

Subscribe to this mod's changes

Fayeblade_mcp copilot-instructions.md is an instructions file published in the GitHub repository Fayeblade1488/Fayeblade_mcp (1 stars, last pushed 1y ago), licensed MIT. It adds 1,074 tokens to every session, about $0.0043 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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