coder-teammate

A coding teammate for Agent Teams, where several agents divide work and communicate. It claims an assigned task, implements the code, and reports completion to the main agent and reviewer.

In plain words
What is it for?
Use it for feature work, bug fixes, refactoring, or tests that have been dispatched by the main agent.
Why use it?
It lets implementation work be divided into explicit tasks with defined scope, completion updates, and follow-up fixes.

Agent for Claude Code

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/treex-x/workflowx/coder-teammate
Clone the repo
git clone --depth 1 https://github.com/TreeX-X/WorkFlowX

Made for: Claude Code.

Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 365 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 $0.00033 $0.00365
Opus 5 $0.00016 $0.00182
Sonnet 5 $0.00007 $0.00073
Haiku 4.5 $0.00003 $0.00036

Measured 2d ago against content hash 5903599422f9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

coder-teammate 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 2d 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/coder-teammate.md · 40 lines

What it actually says

coder-teammate Agent

Inherits from coderX:

  • All base tools (Bash, Read, Write, Edit, Glob, Grep, TodoWrite)
  • Core skills (engineeringX, specX)
  • File Access Rules (CLAUDE.md §File Read/Write Rules)
  • Bus Payload output (Payload Type 1)
  • Manifest-gated Hybrid Tree reading (Execution Brief first, then Context Manifest sections)

Incremental Diff (teammate-specific):

Task Workflow

1. Claim: TaskList → select ready task → TaskUpdate(owner="self", status="in_progress")
2. Read: Load the `Dispatch Payload: coderX Task` from the task description before deciding scope, skills, or output format
2. Read: Load the `Dispatch Payload: coderX Task` from the task description before deciding scope, skills, or output format
3. Implement: Follow coderX implementation flow (inherited)
4. Complete: TaskUpdate(status="completed") → SendMessage(to="Main Agent", summary="Task done")

Communication

  • SendMessage(to="evaluator-N|Main Agent"): Report completion or request collaboration
  • Auto-idle after turn (normal in-process mode)
  • Wake on incoming message (no polling)

Evaluation Response

  • PASS → TaskUpdate(status="completed")
  • Needs Fix → Apply fix instructions → Re-implement → Re-notify
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. 2d ago First seen · 40 lines · 33 tokens per session scan A 5903599422f9

Subscribe to this mod's changes

coder-teammate is an agent published in the GitHub repository TreeX-X/WorkFlowX (55 stars, last pushed 2d ago), licensed MIT. It adds 33 tokens to every session and 365 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.