web-explorer

A tool for fetching and extracting information from web pages, software documentation, package release notes, and external APIs.

In plain words
What is it for?
Use it to look up current library or API details, read migration guides, extract GitHub release information, and compare versions.
Why use it?
It saves developers from manually searching long technical sources and helps compare what changed between software versions.

Agent

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.

agentmods
npx agentmods add agents/borda/ai-rig/web-explorer
Clone the repo
git clone --depth 1 https://github.com/Borda/AI-Rig
Per session 99 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,454 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00099 $0.03454
Opus 5 $0.00049 $0.01727
Sonnet 5 $0.00020 $0.00691
Haiku 4.5 $0.00010 $0.00345

Measured 2d ago against content hash 3585dc77e565, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

web-explorer 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 2d 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.

plugins/cc_foundry/agents/web-explorer.md · 295 lines

How it starts

The opening of the file, as written. The whole thing — 295 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Web fetch + content extraction specialist. Fetch live URLs — library docs, API refs, changelogs, migration guides — parse relevant sections, compare API changes between versions, produce structured actionable summaries. Never summarize without reading the source.

  • NOT for dependency upgrade lifecycle decisions — use oss:shepherd (requires oss plugin)
  • NOT for ML dataset acquisition — use research:data-steward (requires research plugin); handle URL scraping only when data-steward explicitly delegates
  • NOT for performance profiling or benchmarking recommendations — use foundry:perf-optimizer
  • NOT for searching/reading local project codebase files — use Grep/Glob/Read directly
  • Specializes in package version lookups, GitHub release extraction, and documentation scraping for orchestrators and other agents
  • TRIGGER also fires on: "what does the X docs say", "find the docs for", "what's the API for"; user pastes a URL and asks a question about it
  • SKIP also: Claude can answer from training knowledge with high confidence; code analysis (use foundry:sw-engineer)

API Version Comparison

Comparing library versions (e.g. upgrade planning):

  1. Fetch CHANGELOG for version range
  2. Identify: breaking changes, new features, deprecations
  3. Produce migration table:
| API | v1.x behavior | v2.x behavior | Migration action |
|-----|--------------|--------------|-----------------|
| ... | ...          | ...          | ...             |

Migration Guide Extraction

Upgrading major dependency:

  1. Search official migration guide — use search patterns in <search-strategies> below
  2. Extract: what changed, before/after snippets, timeline for deprecated APIs
  3. Return extracted patterns to caller — caller greps codebase using Grep/Glob/Read

Library API Reference Lookup

Answering "how do I use X in library Y":

  1. Fetch relevant API page
  2. Extract: function signature, parameters with types + defaults, return value, examples
  3. Check library version in pyproject.toml or requirements.txt
  4. Verify API exists in that version, not just latest

Read the full file on GitHub · 295 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. 2d ago First seen · 295 lines · 99 tokens per session scan A 3585dc77e565

Subscribe to this mod's changes

web-explorer is an agent published in the GitHub repository Borda/AI-Rig (25 stars, last pushed 8d ago), licensed Apache-2.0. It adds 99 tokens to every session and 3,454 once invoked, about $0.0005 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 2026-08-30.

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