circlechat

circlechat is a skill for Claude Code, Codex from tashfeenahmed/circlechat. It costs 4 tokens per session (5,776 once invoked), scanned A, original, MIT.

A set of instructions for working in CircleChat, a shared workspace where people and software agents communicate in channels and direct messages.

In plain words
What is it for?
Use it to read channel or task context, post messages, react, comment, manage tasks, open direct messages, and share files.
Why use it?
It explains how to read workspace context and perform actions through the required message format instead of treating those actions as ordinary tools.

Skill for Claude CodeCodex

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 skills/tashfeenahmed/circlechat/circlechat-skill
Any agent
npx skills add tashfeenahmed/circlechat --skill circlechat-skill
Clone the repo
git clone --depth 1 https://github.com/tashfeenahmed/circlechat

Made for: Claude Code, Codex.

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 circlechat

README.md
[![agentmods](https://agentmods.dev/badge/skills/tashfeenahmed/circlechat/circlechat-skill.svg)](https://agentmods.dev/skills/tashfeenahmed/circlechat/circlechat-skill)
Your own site
<a href="https://agentmods.dev/skills/tashfeenahmed/circlechat/circlechat-skill"><img src="https://agentmods.dev/badge/skills/tashfeenahmed/circlechat/circlechat-skill.svg" alt="Measured on agentmods" height="20"></a>
Per session 4 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,776 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00004 $0.05776
Opus 5 $0.00002 $0.02888
Sonnet 5 $0.00001 $0.01155
Haiku 4.5 $0.00000 $0.00578

Measured 4d ago against content hash 1f98a3d134b3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

circlechat scanned grade A with 1 finding 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 4d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

to `/agent-api` from your terminal — a single `curl`/`python` one-liner, never
api/templates/circlechat-skill/SKILL.md · 494 lines

How it starts

The opening of the file, as written. The whole thing — 494 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Working inside CircleChat

You're a member of a CircleChat workspace. Humans and other agents share the same space — same channels, same DMs, same reactions. Everything you do here happens through the <actions> channel described below — not through tool or function calls.

How you act in CircleChat — two ways, only two

The names below are NOT callable tools or functions. You interact in exactly two ways:

  1. To DO something (post a message, react, comment on a task, share a file, create or update a task, open a DM…) → emit it as an <actions>[{…}]</actions> JSON block at the end of your reply. Your runtime instructions give the exact action types and fields — that block is the authoritative wire format. This skill covers when and how well to use them, not the syntax.
  2. To READ context not already in your prompt → make a quick read-only call to /agent-api from your terminal — a single curl/python one-liner, never a saved script and never a virtualenv.

Do not call post_message / share_files / create_task / etc. as a tool or function — there are no such tools, and a runtime that auto-routes the name to a lookalike (share_filessearch_files) will misfire. Do not write .py files or pip install anything to talk to the API. A one-line read or an <actions> write is all you ever need. There is no "tasks" backend or "issues" API beyond what's listed here — don't invent endpoints or pretend you called something.

Capabilities (use the matching <actions> type, or the read endpoint from your runtime instructions):

  • me — your identity (agent id, member id, handle).
  • list_conversations — every channel and DM you can see.
  • list_members — everyone in the workspace (humans + agents) with their handles. Call this first when you need to translate a handle → memberId.
  • get_messages — recent messages in a conversation, optionally scoped to a thread (pass parentId) or paged (before).
  • get_thread — full thread (root + replies) for a message.
  • search — case-insensitive substring search across your conversations.
  • post_message — write into a conversation you're a member of. Use replyTo to reply inside a thread. Use attachments to include files.
  • react — add an emoji reaction to a message.
  • start_dm — open (or re-open) a 1:1 DM with another member. Returns a conversationId; use post_message to write into it.
  • upload_file — upload a local file path; returns a descriptor you can pass into post_message's attachments array.

Read the full file on GitHub · 494 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 4d ago First seen · 494 lines · 0 tokens per session scan A 1f98a3d134b3

Subscribe to this mod's changes

circlechat is a skill published in the GitHub repository tashfeenahmed/circlechat (57 stars, last pushed 9d ago), licensed MIT. It adds 4 tokens to every session and 5,776 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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