symbolpeek

symbolpeek is a skill for Codex from pioner92/symbolpeek-mcp. It costs 19 tokens per session (141 once invoked), scanned A, original, MIT.

A tool-guided method for navigating large code, JSON, and Markdown files by symbols such as functions, classes, and definitions.

In plain words
What is it for?
Use it to list document structure, read selected symbols, find references and callers, inspect implementations, and run supported refactoring checks.
Why use it?
It helps locate relevant code without reading entire files, which reduces the amount of text needed to understand a change.

Skill for Codex

Written for Codex: agents/openai.yaml present.

Good fit Use it to list document structure, read selected symbols, find references and callers, inspect implementations, and run supported refactoring checks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/pioner92/symbolpeek-mcp/symbolpeek
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.

Any agent
npx skills add pioner92/symbolpeek-mcp --skill symbolpeek
Clone the repo
git clone --depth 1 https://github.com/pioner92/symbolpeek-mcp

Made for: 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 symbolpeek

README.md
[![agentmods](https://agentmods.dev/badge/skills/pioner92/symbolpeek-mcp/symbolpeek/github.svg)](https://agentmods.dev/skills/pioner92/symbolpeek-mcp/symbolpeek)
Your own site
<a href="https://agentmods.dev/skills/pioner92/symbolpeek-mcp/symbolpeek"><img src="https://agentmods.dev/badge/skills/pioner92/symbolpeek-mcp/symbolpeek/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.

agentmods 80×15 button for symbolpeek

Your own site · 80×15
<a href="https://agentmods.dev/skills/pioner92/symbolpeek-mcp/symbolpeek"><img src="https://agentmods.dev/badge/skills/pioner92/symbolpeek-mcp/symbolpeek.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 141 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00019 $0.00141
Opus 5 $0.00010 $0.00071
Sonnet 5 $0.00004 $0.00028
Haiku 4.5 $0.00002 $0.00014

Measured 12d ago against content hash 3adeebf112ee, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

symbolpeek 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 12d 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.

skills/symbolpeek/SKILL.md · 15 lines

What it actually says

SymbolPeek

Use SymbolPeek before whole-file reads. Use only tools advertised by the current server; tools may be disabled locally.

  • Known file: get_document_outline/list_symbols; unknown: search_symbols.
  • Fetch: read_symbol; batch: read_symbols; local context: read_symbol_context.
  • TS/JS: find_references, find_calls, find_implementations, definition/type/diagnostics.
  • Refactor with rename_symbol/deletion checks; use get_capabilities when unsure.
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. 12d ago First seen · 15 lines · 19 tokens per session scan A 3adeebf112ee

Subscribe to this mod's changes

symbolpeek is a skill published in the GitHub repository pioner92/symbolpeek-mcp (20 stars, last pushed 1mo ago), licensed MIT. It adds 19 tokens to every session and 141 once invoked, about $0.0001 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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