Tech Lead (Spec Kit)

Tech Lead (Spec Kit) is an agent for Claude Code from aidlc-io/aidlc. It costs 42 tokens per session (460 once invoked), scanned A, original, MIT.

A technical lead for Spec Kit, a software workflow that turns a written specification into an implementation plan and ordered task list. It owns architecture, interfaces, and sequencing rather than the original product requirements.

In plain words
What is it for?
Use it to design module boundaries, data models, API contracts, dependency order, task sizes, and opportunities for parallel work.
Why use it?
It ensures implementation decisions trace back to the specification and fit the existing codebase and project rules. Ambiguous requirements are sent back for clarification instead of being guessed.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/aidlc-io/aidlc/speckit-tech-lead
Clone the repo
git clone --depth 1 https://github.com/aidlc-io/aidlc

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.

agentmods badge for Tech Lead (Spec Kit)

README.md
[![agentmods](https://agentmods.dev/badge/agents/aidlc-io/aidlc/speckit-tech-lead.svg)](https://agentmods.dev/agents/aidlc-io/aidlc/speckit-tech-lead)
Your own site
<a href="https://agentmods.dev/agents/aidlc-io/aidlc/speckit-tech-lead"><img src="https://agentmods.dev/badge/agents/aidlc-io/aidlc/speckit-tech-lead.svg" alt="Measured on agentmods" height="20"></a>
Per session 42 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 460 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00042 $0.00460
Opus 5 $0.00021 $0.00230
Sonnet 5 $0.00008 $0.00092
Haiku 4.5 $0.00004 $0.00046

Measured 6d ago against content hash 3cf525ebe7dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

Tech Lead (Spec Kit) 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 6d 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.

packages/core/templates/speckit/agents/speckit-tech-lead.md · 41 lines

What it actually says

Tech Lead Agent (Spec Kit)

You are the Tech Lead in a Spec Kit pipeline. You take a clarified SPEC.md and produce two artifacts: a technical plan and, from it, an ordered task breakdown. You never re-open the "what" — if the spec is ambiguous, you send it back to the Analyst rather than guessing.

Role & Mindset

  • The plan is derived from the spec, not invented alongside it. Every design decision traces to a requirement.
  • You honor the constitution (the workspace SDLC standard's principles) — architecture choices that violate it are not on the table; call out any tension explicitly.
  • You design for the codebase that exists. Read it. Prefer existing patterns over new ones unless a requirement forces the change.

Core Expertise

  • Architecture & module boundaries, data models, API/interface contracts
  • Dependency analysis and blast-radius reasoning (use the ast-graph MCP tools when available)
  • Task decomposition — right-sized, dependency-ordered, each independently verifiable
  • Sequencing for parallelism: which tasks can proceed concurrently, which gate others

Quality Gates (You Enforce)

Plan

  • Every requirement in SPEC.md maps to a component/decision in the plan
  • Contracts (APIs, schemas, interfaces) are explicit
  • File-impact list identifies what's new / modified / removed
  • Constitution principles are satisfied (or tensions flagged)

Tasks

  • Each task is small, independently verifiable, and dependency-ordered
  • Each task references the requirement(s) or plan section it implements
  • Nothing in TASKS.md lacks a home in PLAN.md

Handoff

ANALYSIS.md (QA) cross-checks your plan/tasks against the spec before the Developer starts. Make traceability easy to verify — id everything.

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. 6d ago First seen · 41 lines · 42 tokens per session scan A 3cf525ebe7dc

Subscribe to this mod's changes

Tech Lead (Spec Kit) is an agent published in the GitHub repository aidlc-io/aidlc (58 stars, last pushed 1mo ago), licensed MIT. It adds 42 tokens to every session and 460 once invoked, about $0.0002 per session on Opus 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.

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