Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/jakyeamos/tmcpnpx agentmods add skills/jakyeamos/tmcp/tmcp-architecture-decisionWrote 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/jakyeamos/tmcp/tmcp-architecture-decision)<a href="https://agentmods.dev/skills/jakyeamos/tmcp/tmcp-architecture-decision"><img src="https://agentmods.dev/badge/skills/jakyeamos/tmcp/tmcp-architecture-decision/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/jakyeamos/tmcp/tmcp-architecture-decision"><img src="https://agentmods.dev/badge/skills/jakyeamos/tmcp/tmcp-architecture-decision.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00032 | $0.00289 |
| Opus 5 | $0.00016 | $0.00144 |
| Sonnet 5 | $0.00006 | $0.00058 |
| Haiku 4.5 | $0.00003 | $0.00029 |
Grade A, and why
tmcp-architecture-decision 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 10d 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
TMCP Architecture Decision
Status: experimental. This workflow remains shipped and callable, but its public contract may change.
Use this skill when the user asks whether to use an architecture, library, platform, design pattern, boundary, or migration approach, or when they ask for an ADR/design-decision review.
Do not use it for immediate implementation unless the user has already approved the decision.
Workflow
- Gather evidence: current architecture, constraints, repo patterns, alternatives, migration cost, compatibility concerns, and verification expectations.
- Invoke
tmcp_explainfor the decision-specific packet. - Invoke
expert_rubric_review_planto score source grounding, risk priority, verification readiness, and scope control. - If MCP tools are unavailable, run from the TMCP plugin root:
node scripts/tmcp_launcher.mjs review-plan "Review this architecture decision for <project>" --project-path "<project-path>" --evidence-json '<json>' --write-artifacts
Output Contract
Produce or cite:
- TMCP packet and
substance_check. - Decision context and constraints.
- Alternatives considered.
- Tradeoff and migration-cost audit.
- Recommended ADR outcome.
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.
- 10d ago First seen · 35 lines · 32 tokens per session scan A 42c5b59f463b
tmcp-architecture-decision is a skill published in the GitHub repository jakyeamos/tmcp (0 stars, last pushed today), licensed MIT. It adds 32 tokens to every session and 289 once invoked, about $0.0002 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 2026-08-31.
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