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 nick-railsback/skill-engine --skill modelcontextprotocol-python-sdk-contextgit clone --depth 1 https://github.com/nick-railsback/skill-engineWrote 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/nick-railsback/skill-engine/modelcontextprotocol-python-sdk-context)<a href="https://agentmods.dev/skills/nick-railsback/skill-engine/modelcontextprotocol-python-sdk-context"><img src="https://agentmods.dev/badge/skills/nick-railsback/skill-engine/modelcontextprotocol-python-sdk-context/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/nick-railsback/skill-engine/modelcontextprotocol-python-sdk-context"><img src="https://agentmods.dev/badge/skills/nick-railsback/skill-engine/modelcontextprotocol-python-sdk-context.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 | $0.00116 | $0.02443 |
| Opus 5.5 | $0.00046 | $0.00977 |
| Sonnet 5.5 | $0.00023 | $0.00489 |
| Haiku 4.5 | $0.00012 | $0.00244 |
Grade A, and why
modelcontextprotocol-python-sdk-context 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 — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Context navigator
Overview
This navigator catalogs references for the official MCP Python SDK at GitHub SHA 3eb579948a4719d606d2adbd1f3f69371c9c0f48 (HEAD of main on 2026-05-26). HEAD is v2 pre-alpha; the current stable release lives on the v1.x branch and uses the older FastMCP / camelCase / decorator-based APIs. All references in this contextualizer document v2 syntax — if you have v1 code in front of you, start with the migration reference.
When asked a question this navigator's domain covers:
- Scan the Catalog below for the matching topic.
- Follow the link to read the reference file.
- If the question spans multiple references, consult the Cross-reference map.
- If a reference points at a source URL for deeper detail, follow it only if the reference itself didn't answer the question.
Claims policy
Cite by default, and make load-bearing claims verifiable:
- Inline-cite every load-bearing claim with its SHA-pinned permalink — the
https://github.com/<owner>/<repo>/blob/<sha>/<path>#L<start>-L<end>link the reference gives for that fact (versions, defaults, signatures, deprecations, behavior a user could get wrong by guessing). Put the permalink inline, on the claim. Use a bare filename parenthetical (e.g. (reference-name.md)) only when the reference genuinely provides no permalink. This inline permalink is what the grounded-citation eval (SELF-AUDIT Check 8) grades. - Don't cite orientational prose — "what is X?", "when did X launch?" — answer those from this navigator alone; opening a reference is itself a citation gesture.
- End with a one-line provenance footer, emitted italic, formatted
*References consulted: foo.md, bar.md. Grounded in {{LIBRARY}}@{{VERSION}} — [reference index]({{INDEX_URL}}).*The footer is a summary of what you read — not a substitute for the inline permalinks on the claims. The{{LIBRARY}}/{{VERSION}}/{{INDEX_URL}}tokens are agent-substituted at answer time, so they appear literally in the stampedSKILL.md. - If no reference was opened, say so in the footer ("Answered from general knowledge — no {{LIBRARY}} references consulted") — never fake it.
What ships with it
20 files 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.
- references/modelcontextprotocol-python-sdk-auth.md 12 KB
- references/modelcontextprotocol-python-sdk-client.md 11 KB
- references/modelcontextprotocol-python-sdk-experimental-tasks.md 12 KB
- references/modelcontextprotocol-python-sdk-lowlevel-server.md 11 KB
- references/modelcontextprotocol-python-sdk-mcpserver.md 12 KB
- references/modelcontextprotocol-python-sdk-migration-v1-to-v2.md 17 KB
- references/modelcontextprotocol-python-sdk-overview.md 8.8 KB
- references/modelcontextprotocol-python-sdk-transports.md 12 KB
- references/modelcontextprotocol-python-sdk-types.md 9.7 KB
- research/.discover-cache.json 186 B
- research/.engine-stats.json 476 B
- research/.research-state.json 22 B
- research/eval-prompts-test.json 979 B
- research/eval-prompts-train.json 1.5 KB
- research/eval-results.md 4.5 KB
- research/review-state.json 97 B
- research/sessions/self-audit-2026-05-19.json 740 B
- research/sessions/self-audit-2026-05-26.json 485 B
- research/source-paths.json 483 B
- verify.sh 107 KB runs code
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 · 90 lines · 116 tokens per session scan A 84f2e5960927
modelcontextprotocol-python-sdk-context is a skill published in the GitHub repository nick-railsback/skill-engine (2 stars, last pushed 3d ago), licensed MIT. It adds 116 tokens to every session and 2,443 once invoked, about $0.0005 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 2026-08-31.
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