update-evidence

update-evidence is a skill for Claude Code from rjroy/vibe-garden. It costs 59 tokens per session (597 once invoked), scanned A, original, MIT.

A tool that connects field-guide pages—project reference documentation—to the current source code and tests by adding evidence links.

In plain words
What is it for?
Use it after creating or editing field-guide pages to add or refresh links to relevant code, tests, and symbols.
Why use it?
It makes later checks easier by showing which files, tests, and code symbols support each page.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the field-guide plugin — 7 skills shipped together

Good fit Use it after creating or editing field-guide pages to add or refresh links to relevant code, tests, and symbols.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rjroy/vibe-garden/update-evidence
Install

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.

Any agent
npx skills add rjroy/vibe-garden --skill update-evidence
Clone the repo
git clone --depth 1 https://github.com/rjroy/vibe-garden

Made for: Claude Code.

Or install field-guide, the plugin that ships this one along with the rest of its 7 skills.

Wrote 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.

agentmods badge for update-evidence

README.md
[![agentmods](https://agentmods.dev/badge/skills/rjroy/vibe-garden/update-evidence/github.svg)](https://agentmods.dev/skills/rjroy/vibe-garden/update-evidence)
Your own site
<a href="https://agentmods.dev/skills/rjroy/vibe-garden/update-evidence"><img src="https://agentmods.dev/badge/skills/rjroy/vibe-garden/update-evidence/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.

agentmods 80×15 button for update-evidence

Your own site · 80×15
<a href="https://agentmods.dev/skills/rjroy/vibe-garden/update-evidence"><img src="https://agentmods.dev/badge/skills/rjroy/vibe-garden/update-evidence.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 597 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00059 $0.00597
Opus 5 $0.00030 $0.00298
Sonnet 5 $0.00012 $0.00119
Haiku 4.5 $0.00006 $0.00060

Measured 12d ago against content hash 01e387db6a5e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

update-evidence 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 12d 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.

field-guide/skills/update-evidence/SKILL.md · 80 lines

How it starts

The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Update Evidence

Attach living implementation anchors to field-guide reference pages.

This is the mechanical pass between ingestion and semantic drift review:

  1. ingest extracts durable knowledge from .lore/work/.
  2. update-evidence connects that knowledge to current code and tests.
  3. resolve-drift compares the prose against those anchors.

Scope

Update indexed pages in .lore/reference/. Prefer .lore/reference/index.md; if it does not exist, read .lore/reference/index.html. Links may point to .md or .html pages.

Do not require fg-sources files to exist. Source artifacts are ingestion provenance and may be intentionally deleted after knowledge is extracted.

Evidence Metadata

For Markdown pages, add or refresh YAML frontmatter:

fg-evidence:
  code:
    - src/core/model/types.ts
  tests:
    - src/core/tests/model.test.ts
  symbols:
    - CardEffect

For HTML pages, add or refresh meta tags in <head>:

<meta name="fg-evidence-code" content="src/core/model/types.ts">
<meta name="fg-evidence-tests" content="src/core/tests/model.test.ts">
<meta name="fg-evidence-symbols" content="CardEffect">

How To Choose Evidence

Read the page body and identify concrete implementation claims:

  • named modules, files, APIs, data files, and tests
  • symbols in backticks
  • world ids, feature ids, schema names, and settings keys
  • statements about ownership, runtime flow, persistence, validation, UI behavior, or test coverage

Search the repository for those anchors with rg. Evidence should point to files that would naturally change if the page became stale.

Good evidence:

  • code paths that implement the claim
  • data files that contain the authored truth
  • tests that assert the behavior
  • stable symbols that should exist while the claim remains true

Weak evidence:

  • files that only mention the same words incidentally
  • generated artifacts
  • stale work artifacts under .lore/work/
  • broad project files such as package.json unless the page is specifically about tooling or stack choice

Read the full file on GitHub · 80 lines

Changes

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.

  1. 12d ago First seen · 80 lines · 59 tokens per session scan A 01e387db6a5e

Subscribe to this mod's changes

update-evidence is a skill published in the GitHub repository rjroy/vibe-garden (6 stars, last pushed 2mo ago), licensed MIT. It adds 59 tokens to every session and 597 once invoked, about $0.0003 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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