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.
curl -O https://raw.githubusercontent.com/sampleXbro/agentsmesh/master/.agents/skills/senior-developer-source-of-truth/SKILL.mdgit clone --depth 1 https://github.com/sampleXbro/agentsmeshWrote 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.
[](https://agentmods.dev/skills/samplexbro/agentsmesh/senior-developer-source-of-truth)<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>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once 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 |
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.
What it actually says
Purpose
Source of Truth: Trust Code, Not Docs
All documentation might be outdated. The only source of truth:
- Actual codebase - Code as it exists now
- Live configuration - Environment variables, configs as actually set
- Running infrastructure - How services actually behave
- 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.
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.
- 4d ago First seen · 40 lines · 20 tokens per session scan A 728ed933f341
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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