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.
npx skills add Mark393295827/third-brain-v7-skills --skill agentic-engineeringgit clone --depth 1 https://github.com/Mark393295827/third-brain-v7-skillsWrote 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/mark393295827/third-brain-v7-skills/agentic-engineering)<a href="https://agentmods.dev/skills/mark393295827/third-brain-v7-skills/agentic-engineering"><img src="https://agentmods.dev/badge/skills/mark393295827/third-brain-v7-skills/agentic-engineering/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.
<a href="https://agentmods.dev/skills/mark393295827/third-brain-v7-skills/agentic-engineering"><img src="https://agentmods.dev/badge/skills/mark393295827/third-brain-v7-skills/agentic-engineering.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00033 | $0.01524 |
| Opus 5.5 | $0.00013 | $0.00610 |
| Sonnet 5.5 | $0.00007 | $0.00305 |
| Haiku 4.5 | $0.00003 | $0.00152 |
Grade A, and why
agentic-engineering 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 135 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agentic Engineering
<skill_contract> An engineering objective, inspectable repository or workflow, acceptance criteria, permissions, risk, and state location. The smallest sufficient model-native process with bounded autonomy, evals, recovery, and verified write-back. Fresh task and adoption evidence support the observable end state without crossing authority boundaries. <non_goals>Agent complexity for its own sake, premature multi-agent topology, or unverified knowledge promotion.</non_goals>
An agent is a stateful engineering process, not a prompt. Its quality ceiling is the combination of objective, context, tools, taste/evaluation, permissions, recovery, and feedback latency.
Usage Template
Provide: engineering objective, repository/workflow, users, acceptance criteria, constraints, permissions, risk, current evidence, and durable state location.
Workflow
- Inspect repository guidance, code, tests, state, and current failure before proposing architecture.
- Define the observable end state, non-goals, owner, budget, and review bandwidth. Put code and non-code constraints in one versioned, reviewable intent surface; chat history alone is not the shared plan.
- Run the adoption gate: use an agent only when ambiguity/adaptation outweigh orchestration, verification, and maintenance cost. Prefer deterministic code for stable transformations.
<unknowns_gate>
Map unknowns into: known, probeable from tools/files, testable by prototype, and externally blocked. Probe boundary/interface unknowns before implementation. Return NEEDS_INPUT only when a missing business decision, permission, or irreversible tradeoff cannot be discovered locally; otherwise label assumptions and test them.
</unknowns_gate>
- Write the macro action:
trigger -> objective -> inputs -> constraints -> artifact -> verifier -> state -> stop/recovery. - Define quality with domain-specific examples, anti-examples, guardrails, and cheap checks; generic “good quality” is invalid.
- Decompose into the fewest independently verifiable units with one owner each. Probe representative units and shorten the task horizon until every delegated unit has a cheap verifier and an evidence-backed reliability threshold; do not delegate a large refactor as one zero-shot goal.
- Select the lowest sufficient topology: one-shot for one bounded action,
loop-engineeringfor temporal correction,graph-engineeringfor explicit dependency width and joins, andagent-teams-commandonly when distinct worker processes and integration ownership add value. - Route by capability (reasoning, tool use, latency, context, modality, cost) and runtime policy; record route, latency, cost, and verifier result while keeping vendor/model names out of durable contracts.
- Treat model text and tool arguments as proposals. Normalize the runtime
termination_reasoninto complete, tool request, checkpoint/truncation, or escalation; only host code may execute tools or decide continuation. - Establish harness controls: least privilege, tool schemas, timeouts, observability, checkpoints, idempotency, staged effects, and rollback. Compile the reviewed intent into a validated runtime envelope and bind the plan and envelope hashes in durable state.
- Run a thin loop: understand -> plan -> smallest change -> targeted test -> inspect diff/state -> broader check.
- Use independent evaluation or adversarial review for consequential logic, interfaces, and claims.
- Remove temporary scaffolding, duplicate abstractions, and context that no longer changes decisions.
- Write back only reusable, verified deltas. Promotion into skills/SOPs requires repeated support or local verification plus a cheap objective check.
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.
- 1mo ago First seen · 135 lines · 33 tokens per session scan A 5215fdcb58aa
agentic-engineering is a skill published in the GitHub repository Mark393295827/third-brain-v7-skills (141 stars, last pushed 1mo ago), licensed MIT. It adds 33 tokens to every session and 1,524 once invoked, about $0.0001 per session on Opus 5.5. 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.
Other skills, from other repositories
local-qa
A quality-assurance procedure that adds or updates tests and a repair guide whenever a software component changes. Quality assurance means checking that software still works and can be fixed later.
tt
Quality gate immediately after building: prove that what was just built actually works, while the context is still hot. Six steps: scope what changed, run live on real data, break it on purpose, show a counter or log proving it ran, root-cause any failure and re-run, then a verdict with evidence. Only a green verdict…
local-fb-alpha
A comment-analysis workflow that extracts links and ideas from Anton’s Facebook posts, fetches each resource, and tests it against an existing solution.
red-first-review
Review someone else's pull request by measuring which of its own guards its own test suite actually catches, via a small mutation matrix. Use when reviewing a PR, checking whether a regression test is real, or asked 'is this change actually tested?', 'does this test do anything', 'mutation test this'.
pos-verify
Use this immediately after files are created, edited, moved, deleted, or materially rewritten inside PersonalOS. Verifies that new truth was routed to the correct owner, written in the correct file shape, and still follows POS conventions. Do NOT use for whole-vault deep audits; use system-health-check.
tdd
A test-first development workflow based on TDD, or test-driven development. It writes a failing test, adds code to make it pass, and then improves the code without changing its behavior.