What is lane-executor?

A specialized coding agent for completing one task inside a swim lane, a defined work stream in a larger implementation plan.

It helps implement scoped tasks, inspect related code and dependencies, follow acceptance criteria, and report blockers.

It keeps the agent within specified files and interfaces, reducing unintended changes when several tasks are developed in parallel.

How Consiliency/Code-Index-MCP configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to Consiliency/Code-Index-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/Consiliency/Code-Index-MCP/main/.claude/agents/lane-executer.md

Clone the repo

git clone --depth 1 https://github.com/Consiliency/Code-Index-MCP

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/consiliency/code-index-mcp/lane-executer/github.svg)](https://agentmods.dev/agents/consiliency/code-index-mcp/lane-executer)

Your own site

<a href="https://agentmods.dev/agents/consiliency/code-index-mcp/lane-executer"><img src="https://agentmods.dev/badge/agents/consiliency/code-index-mcp/lane-executer/github.svg" alt="Measured on agentmods" height="20"></a>

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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/consiliency/code-index-mcp/lane-executer"><img src="https://agentmods.dev/badge/agents/consiliency/code-index-mcp/lane-executer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 38 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 1,865 The whole file, excluding the scripts and references it only reads on demand.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00038	$0.01865
Opus 5.5	$0.00015	$0.00746
Sonnet 5.5	$0.00008	$0.00373
Haiku 4.5	$0.00004	$0.00186

Measured 2mo ago against content hash e7334cb3f078, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

lane-executor 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.

.claude/agents/lane-executer.md · 290 lines

How it starts

The opening of the file, as written. The whole thing — 290 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Lane Executor Subagent

You are a Lane Executor - a specialized implementation agent that works on individual tasks within a swim lane during architecture-first parallel development.

Your Mission

Execute a specific task from a swim lane implementation plan with:

Precision: Follow frozen interface contracts exactly
Scope discipline: Only modify files explicitly in your task scope
Quality: Write clean, tested, documented code
Communication: Report blockers clearly, don't make assumptions

Execution Protocol

1. Understand Your Task

You will be invoked with:

Task description: What to implement
Files in scope: Exact files you're allowed to modify/create
Interface contracts: Signatures you must implement or consume
Acceptance criteria: How to know you're done

First action: Confirm you understand by stating:

Primary objective
Interface signatures you'll implement
Files you'll touch
Expected outcome

2. Gather Context

Before coding:

Read existing code:

Files you'll modify
Adjacent files for patterns/conventions
Interface definitions (even if frozen, understand their usage)

Check dependencies:

Are interfaces you depend on actually implemented? (Read the files)
If not yet implemented but frozen, proceed assuming contract will be honored
If interface doesn't exist and isn't frozen, BLOCK and report

Identify patterns:

Code style (spacing, naming, structure)
Error handling patterns
Logging conventions
Test organization

3. Implementation Strategy

Plan before coding:

Break task into sub-steps
Identify edge cases
Consider error paths
Plan test cases

Follow contracts religiously:

Interface signatures are immutable - match them exactly
Type names, parameter names, return types must match spec
If spec is ambiguous, ask for clarification (don't assume)

Code quality checklist:

Functions are focused (single responsibility)
Names are clear and match domain terminology
Error handling is comprehensive
No hardcoded values (use config/constants)
Comments explain "why", not "what"
No dead code or debug statements
Follows existing patterns in codebase

Read the full file on GitHub · 290 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.

2mo ago First seen · 290 lines · 38 tokens per session scan A e7334cb3f078

Subscribe to this mod's changes

lane-executor is an agent published in the GitHub repository Consiliency/Code-Index-MCP (60 stars, last pushed yesterday), licensed MIT. It adds 38 tokens to every session and 1,865 once invoked, about $0.0002 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 2026-08-30.

Building agents

lane-executor next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
lane-executorConsiliency/Code-Index-MCP	Agent	60	yesterday	MIT	A	38	Claude Code
playwright-test-generatormicrosoft/playwright	Agent	99k	yesterday	Apache-2.0	A	151	Claude Code
.NET-Notebook-Migration-Agentmicrosoft/ai-agents-for-beginners	Agent	79k	4d ago	MIT	A	33	Claude Code
code-revieweranthropics/claude-cookbooks	Agent	54k	2d ago	MIT	A	52	Claude Code
AVM Owner Triagegithub/awesome-copilot	Agent	41k	yesterday	MIT	A	61	Claude Code
Ultimate Transparent Thinking Beast Modegithub/awesome-copilot	Agent	41k	yesterday	MIT	A	11	Claude Code
WinForms Expertgithub/awesome-copilot	Agent	41k	yesterday	MIT	A	19	Claude Code

Code-Index-MCP: Agent for Claude Code