agentsmesh: Skill for Claude Code

.agents/skills/senior-developer-source-of-truth/SKILL.md

senior-developer-source-of-truth is a skill for Claude Code, Codex from sampleXbro/agentsmesh. It costs 20 tokens per session (423 once invoked), scanned A, original, MIT.

A development rule that treats the actual code, configuration, running services, and observed behavior as more reliable than documentation.

In plain words
What is it for?
Use it when documentation conflicts with code, configuration, infrastructure, or how the system actually behaves.
Why use it?
It prevents outdated documentation from leading to incorrect implementations or explanations.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is sampleXbro/agentsmesh's own configuration. It tells Claude Code and Codex how to work on agentsmesh itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything agentsmesh configures →

Reuse

Borrowing it

Nothing to install: this file belongs to sampleXbro/agentsmesh. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/sampleXbro/agentsmesh/master/.agents/skills/senior-developer-source-of-truth/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/sampleXbro/agentsmesh

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 senior-developer-source-of-truth

README.md
[![agentmods](https://agentmods.dev/badge/skills/samplexbro/agentsmesh/senior-developer-source-of-truth.svg)](https://agentmods.dev/skills/samplexbro/agentsmesh/senior-developer-source-of-truth)
Your own site
<a href="https://agentmods.dev/skills/samplexbro/agentsmesh/senior-developer-source-of-truth"><img src="https://agentmods.dev/badge/skills/samplexbro/agentsmesh/senior-developer-source-of-truth.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 423 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00020 $0.00423
Opus 5 $0.00010 $0.00211
Sonnet 5 $0.00004 $0.00085
Haiku 4.5 $0.00002 $0.00042

Measured 4d ago against content hash 728ed933f341, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

senior-developer-source-of-truth 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.

.agents/skills/senior-developer-source-of-truth/SKILL.md · 40 lines

What it actually says

Purpose

Source of Truth: Trust Code, Not Docs

All documentation might be outdated. The only source of truth:

  1. Actual codebase - Code as it exists now
  2. Live configuration - Environment variables, configs as actually set
  3. Running infrastructure - How services actually behave
  4. Actual logic flow - What code actually does when executed

When docs and reality disagree, trust reality. Verify by reading actual code, checking live configs, testing actual behavior.

<example_documentation_mismatch> README: "JWT tokens expire in 24 hours" Code: const TOKEN_EXPIRY = 3600; // 1 hour → Trust code. Update docs after completing your task. </example_documentation_mismatch>

Workflow: Read docs for intent → Verify against actual code/configs/behavior → Use reality → Update outdated docs.

Applies to: All .md files, READMEs, notes, guides, in-code comments, JSDoc, docstrings, ADRs, Confluence, Jira, wikis, any written documentation.

Documentation lives everywhere. Don't assume docs are only in workspace notes/. Check multiple locations:

  • Workspace: notes/, docs/, README files
  • User's home: ~/Documents/Documentation/, ~/Documents/Notes/
  • Project-specific: .md files, ADRs, wikis
  • In-code: comments, JSDoc, docstrings

All documentation is useful for context but verify against actual code. The code never lies. Documentation often does.

In-code documentation: Verify comments/docstrings against actual behavior. For new code, document WHY decisions were made, not just WHAT the code does.

Notes workflow: Before research, search for existing notes/docs across all locations (they may be outdated). After completing work, update existing notes rather than creating duplicates. Use format YYYY-MM-DD-slug.md.


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 · 40 lines · 20 tokens per session scan A 728ed933f341

Subscribe to this mod's changes

senior-developer-source-of-truth is a skill published in the GitHub repository sampleXbro/agentsmesh (24 stars, last pushed today), licensed MIT. It adds 20 tokens to every session and 423 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 2026-09-03.

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