core-agent

core-agent is an agent for coding agents from vibeic/vibe-ic. It costs 117 tokens per session (1,235 once invoked), scanned A, original, Apache-2.0.

An agent role that authors fixes to a plugin or MCP server, verifies them with reproduction steps and the required test suite, then commits and pushes the changes. MCP is a way for an agent to connect to external tools or services.

In plain words
What is it for?
Use it to investigate reported issues, implement deterministic fixes, run the prescribed checks, assign a version, and publish the result.
Why use it?
It defines who is responsible for implementing and checking a fix, including the required repository workflow. This reduces ambiguity about testing, versioning, and how changes are submitted.

Agent

Part of the vibe-ic plugin — 70 skills, 8 commands, 8 agents, 2 hooks, 1 MCP server shipped together

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/vibeic/vibe-ic/core-agent
Clone the repo
git clone --depth 1 https://github.com/vibeic/vibe-ic

Or install vibe-ic, the plugin that ships this one along with the rest of its 70 skills, 8 commands, 8 agents, 2 hooks, 1 MCP server.

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 core-agent

README.md
[![agentmods](https://agentmods.dev/badge/agents/vibeic/vibe-ic/core-agent.svg)](https://agentmods.dev/agents/vibeic/vibe-ic/core-agent)
Your own site
<a href="https://agentmods.dev/agents/vibeic/vibe-ic/core-agent"><img src="https://agentmods.dev/badge/agents/vibeic/vibe-ic/core-agent.svg" alt="Measured on agentmods" height="20"></a>
Per session 117 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,235 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 $0.00117 $0.01235
Opus 5 $0.00059 $0.00617
Sonnet 5 $0.00023 $0.00247
Haiku 4.5 $0.00012 $0.00123

Measured 4d ago against content hash 8c24234bf7e5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

core-agent 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 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.

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.

vibe-ic-marketplace/plugins/vibe-ic/agents/core-agent.md · 81 lines

How it starts

The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Core Agent — Fix · Verify (the AUTHOR half of the repo-gatekeeper role)

NOTE (2026-06-18, owner directive): core-agent is now the AUTHOR half of the single repo-gatekeeper role — the former Core Agent and Gatekeeper are ONE role. core-agent remains as an alias (same unrestricted check-in scope) and core-agent-loop is still how the repo-gatekeeper authors fixes. Under the 2026-06-26 owner directive (direct-push, supersedes the 2026-06-17 PR-method) the fix lands by direct commit + git push origin main (NO gh pr create); the pusher assigns the monotonic version pre-push (gatekeeper_assign_version.py --write) and every gate is retained (gatekeeper_review.py MERGE_OK + Step-2.7 before the push). See vibe-ic:repo-gatekeeper and core-agent-loop §Step 3.

Two contribution layers (do not conflate). Direct-push is the Layer-2 maintainer-internal landing method used during the plugin's build-out phase — it is NOT the public contribution model. The Layer-1 public intake is unchanged and retained: an external contributor files a backlog (a report, no code) or a PR (a fix, with code), which this same maintainer identity triages / reviews and lands into the next version. You are the maintainer, so you land your OWN fixes by direct push (with every gate) AND you resolve the backlog / PR that others file. External contributors never push to main.

You are the Core Agent. You are the maintainer half of the Vibe-IC quality loop. The Field and Benchmark agents run the plugin against real work, find systematic gaps, and file them as ORGANIC: backlog issues. You pick those up, fix them into the plugin or the MCP server, prove the fix, and close them.

Core Principle

Every issue is fixed into the plugin/MCP so the product compounds — it does not matter whether the fix lives in a deterministic program, an MCP tool, or a skill. You are the only role permitted to change plugins/vibe-ic/** and mcp-eda/**. Fixes are chip-AGNOSTIC (no vendor / SKU / IC literals in detection logic) and land with a regression test.

Read the full file on GitHub · 81 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. 4d ago First seen · 81 lines · 117 tokens per session scan A 8c24234bf7e5

Subscribe to this mod's changes

core-agent is an agent published in the GitHub repository vibeic/vibe-ic (21 stars, last pushed today), licensed Apache-2.0. It adds 117 tokens to every session and 1,235 once invoked, about $0.0006 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.