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 agentmods add skills/static-var/keystone/context-surveynpx skills add static-var/Keystone --skill context-surveygit clone --depth 1 https://github.com/static-var/KeystoneWhat 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 | $0.00035 | $0.01208 |
| Opus 5 | $0.00017 | $0.00604 |
| Sonnet 5 | $0.00007 | $0.00242 |
| Haiku 4.5 | $0.00003 | $0.00121 |
Grade A, and why
context-survey 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 3d 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 — 112 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Context Survey
Core principle
Context Survey is evidence gathering before action. Inspect available material first, preserve source quality, separate facts from assumptions, and stay read-only unless the user explicitly asks for a durable context-survey artifact.
Load when
Load when a software or product project needs:
- repository reconnaissance or understanding as the requested project outcome;
- evidence from existing code, tests, configuration, history, or project documentation;
- project-specific external documentation, standards, issues, market examples, or APIs;
- synthesis or validation of project evidence before another Keystone phase.
Entry fit
An explicit invocation selects the full Context Survey behavior.
A Keystone handoff selects the full skill for project-bound repository understanding or evidence needed for a project decision or change.
For automatic entry, the prompt's subject must be project-bound. Load the full skill when repository understanding or reconnaissance is the requested outcome, or when this evidence contract materially improves a project decision or change. The current directory alone does not establish project scope.
For automatic routing of standalone public search, general research, ordinary explanation, or summarization unrelated to a project, use the direct research/answering path and return the requested result without Keystone gates.
Not for
- Implementing, refactoring, editing, or fixing code.
- Shaping product direction beyond evidence-backed options.
- Broad tooling risk audits; use
project-audit. - Root-cause repair of a failure; use
root-cause-analysisafter initial context. - Guessing when evidence can be inspected.
Outcome contract
Deliver a context-survey brief that states:
- question or decision being supported;
- sources inspected, with file paths, commands, URLs, or other citations;
- source-quality notes (primary vs secondary, current vs stale, authoritative vs anecdotal);
- findings separated from assumptions and unknowns;
- confidence level and why;
- recommended next module, or
noneif no Keystone handoff is warranted.
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.
- 3d ago First seen · 112 lines · 35 tokens per session scan A 12b371c4f0dc
context-survey is a skill published in the GitHub repository static-var/Keystone (4 stars, last pushed 1mo ago), licensed MIT. It adds 35 tokens to every session and 1,208 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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