Agent Data Tools

by Grit-77 · remote · no sign-in to list tools · v0.1.0 · published by GitHub user Grit-77

15 data tools at $0.01 USDC/call on Base via x402. Free discovery; x402 wallet client required.

Changes · 4

Compare Registry entry

17 tools: 4 change things and 13 only read.

Scanned Oct 21, 2026

Deletes or cancels0Claude Code: deny
Can't be undone0Claude Code: ask
Changes things4Claude Code: ask: see these tools
Only reads13Claude Code: allow: see these tools

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http agent-data-tools https://agent-data-tools.grit-77.workers.dev/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn

Warnweb-snapshot
The server marks "web-snapshot" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"openWorldHint":true}; The name "web-snapshot" says "snapshot": a word for reading.
What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

17 tools

Changes things 4Creates or changes something that can be changed back.Claude Code: ask

domain-intelOne public domain: sanitized RDAP registration dates/status/nameservers, public DNS A/AAAA/MX/NS/CAA, and verified HTTPS availability.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
One public domain: sanitized RDAP registration dates/status/nameservers, public DNS A/AAAA/MX/NS/CAA, and verified HTTPS availability. No contacts. Certificate details are unavailable on Workers. Price: $0.01 USDC per successful call on Base. Requires an x402-capable wallet client.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
npm-packagesLook up one exact npm package including scoped names, latest version, license, publication times and capped dependency metadata.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Look up one exact npm package including scoped names, latest version, license, publication times and capped dependency metadata. No maintainers, users, contacts, README, tarball or download calls. Price: $0.01 USDC per successful call on Base. Requires an x402-capable wallet client.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
pypi-packagesLook up one exact PyPI package, current version, license, Python requirements and recent releases.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Look up one exact PyPI package, current version, license, Python requirements and recent releases. maxItems caps releases and dependency strings at 50. No maintainers, contacts, long description, package downloads or PyPI search crawl. Price: $0.01 USDC per successful call on Base. Requires an x402-capable wallet client.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
web-snapshotConvert one operator-approved public technical HTML document to Markdown, without a browser or scripts.1 finding
Why it is in this group
- The name "web-snapshot" says "snapshot": a word for reading.
- The description's first verb is "convert": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "web-snapshot" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"openWorldHint":true}; The name "web-snapshot" says "snapshot": a word for reading.
  What this check looks for
Description, as the server wrote it
Convert one operator-approved public technical HTML document to Markdown, without a browser or scripts. No personal pages. Hosts must be approved before use. Price: $0.01 USDC per successful call on Base. Requires an x402-capable wallet client.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true

Only reads 13Looks things up and changes nothing.Claude Code: allow

arxiv-papersSearch arXiv with one literal phrase and return up to 20 paper IDs, titles, categories, dates and source links.No findings
Why it is in this group
- The description's first verb is "search": a word for reading.
Description, as the server wrote it
Search arXiv with one literal phrase and return up to 20 paper IDs, titles, categories, dates and source links. No authors, affiliations, abstracts or PDFs. Requests leave three seconds after completion. Price: $0.01 USDC per successful call on Base. Requires an x402-capable wallet client.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
browser-feature-lookupLook up one exact MDN BCD feature and browser against the actor pinned release and verified Git blob.No findings
Why it is in this group
- The name "browser-feature-lookup" says "lookup": a word for reading.
Description, as the server wrote it
Look up one exact MDN BCD feature and browser against the actor pinned release and verified Git blob. Preserve support statements, arrays, false/null and unresolved mirrors; never infer versions. Price: $0.01 USDC per successful call on Base. Requires an x402-capable wallet client.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
describeFree: describe one paid tool, its input schema and payment configuration.No findings
Why it is in this group
- The name "describe" says "describe": a word for reading.
Description, as the server wrote it
Free: describe one paid tool, its input schema and payment configuration.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
earthquake-eventsRead up to 50 USGS earthquake summary events within an explicit date window of at most 90 days, optionally above a minimum magnitude.No findings
Why it is in this group
- The description's first verb is "read": a word for reading.
Description, as the server wrote it
Read up to 50 USGS earthquake summary events within an explicit date window of at most 90 days, optionally above a minimum magnitude. No event detail products or contact data. Price: $0.01 USDC per successful call on Base. Requires an x402-capable wallet client.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
ecb-fx-ratesRead up to 50 daily ECB reference or same-day cross rates for one currency pair over at most 90 days.No findings
Why it is in this group
- The description's first verb is "read": a word for reading.
Description, as the server wrote it
Read up to 50 daily ECB reference or same-day cross rates for one currency pair over at most 90 days. Quote units per base unit; no weekend interpolation or carry-forward. Reference data, not transaction quotes. Price: $0.01 USDC per successful call on Base. Requires an x402-capable wallet client.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
hacker-newsRead up to 20 current top Hacker News stories or a bounded story search.No findings
Why it is in this group
- The description's first verb is "read": a word for reading.
Description, as the server wrote it
Read up to 20 current top Hacker News stories or a bounded story search. Return story IDs, titles, scores, comment counts and HN links; no users, comments, profiles or hiring text. Price: $0.01 USDC per successful call on Base. Requires an x402-capable wallet client.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
listFree: list paid tools, input schemas and payment configuration.No findings
Why it is in this group
- The name "list" says "list": a word for reading.
Description, as the server wrote it
Free: list paid tools, input schemas and payment configuration. Does not execute or charge a paid tool.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
openalex-papersSearch up to 20 OpenAlex works for paper metadata, DOI, dates, citation counts and open-access status.No findings
Why it is in this group
- The description's first verb is "search": a word for reading.
Description, as the server wrote it
Search up to 20 OpenAlex works for paper metadata, DOI, dates, citation counts and open-access status. CC0 metadata, no authors, ORCIDs or affiliations. Anonymous source allowance applies. Price: $0.01 USDC per successful call on Base. Requires an x402-capable wallet client.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
polymarketRead up to 20 active public Polymarket markets, or one exact slug, with outcome prices and label-matched Yes/No implied probabilities.No findings
Why it is in this group
- The description's first verb is "read": a word for reading.
Description, as the server wrote it
Read up to 20 active public Polymarket markets, or one exact slug, with outcome prices and label-matched Yes/No implied probabilities. Read-only metadata; no traders or wallet data. Price: $0.01 USDC per successful call on Base. Requires an x402-capable wallet client.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
sec-edgarRead up to 50 recent corporate SEC filing index entries by ticker or CIK, optionally filtered by corporate form.No findings
Why it is in this group
- The description's first verb is "read": a word for reading.
Description, as the server wrote it
Read up to 50 recent corporate SEC filing index entries by ticker or CIK, optionally filtered by corporate form. No filing text, ownership forms or personal filers. Requires operator-configured SEC_USER_AGENT contact; SEC fair-access pacing applies. Price: $0.01 USDC per successful call on Base. Requires an x402-capable wallet client.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
software-support-lookupLook up one exact endoflife.date product/release and project lifecycle dates and source flags.No findings
Why it is in this group
- The name "software-support-lookup" says "lookup": a word for reading.
Description, as the server wrote it
Look up one exact endoflife.date product/release and project lifecycle dates and source flags. Explicit asOf computes daysToEol; boolean/unknown EOL values remain unchanged. Price: $0.01 USDC per successful call on Base. Requires an x402-capable wallet client.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
unicode-confusable-lookupLook up one hexadecimal Unicode scalar in official UTS #39 confusables.No findings
Why it is in this group
- The name "unicode-confusable-lookup" says "lookup": a word for reading.
Description, as the server wrote it
Look up one hexadecimal Unicode scalar in official UTS #39 confusables. Returns direct mapped/unmapped status and target sequence; accepts no personal text and makes no identifier-safety judgment. Price: $0.01 USDC per successful call on Base. Requires an x402-capable wallet client.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
us-weather-forecastRead up to 14 NWS land forecast periods for decimal coordinates, with issued time, temperature, winds and precipitation probability.No findings
Why it is in this group
- The description's first verb is "read": a word for reading.
Description, as the server wrote it
Read up to 14 NWS land forecast periods for decimal coordinates, with issued time, temperature, winds and precipitation probability. Only official NWS point and grid forecast URLs; no geocoding or address lookup. Price: $0.01 USDC per successful call on Base. Requires an x402-capable wallet client.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http agent-data-tools https://agent-data-tools.grit-77.workers.dev/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__agent-data-tools__polymarket",
      "mcp__agent-data-tools__hacker-news",
      "mcp__agent-data-tools__arxiv-papers",
      "mcp__agent-data-tools__openalex-papers",
      "mcp__agent-data-tools__sec-edgar",
      "mcp__agent-data-tools__earthquake-events",
      "mcp__agent-data-tools__us-weather-forecast",
      "mcp__agent-data-tools__ecb-fx-rates",
      "mcp__agent-data-tools__software-support-lookup",
      "mcp__agent-data-tools__browser-feature-lookup",
      "mcp__agent-data-tools__unicode-confusable-lookup",
      "mcp__agent-data-tools__list",
      "mcp__agent-data-tools__describe"
    ],
    "ask": [
      "mcp__agent-data-tools__pypi-packages",
      "mcp__agent-data-tools__npm-packages",
      "mcp__agent-data-tools__web-snapshot",
      "mcp__agent-data-tools__domain-intel"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as agent-data-tools. Review it before you use it.

Keep track

Get told when this server's tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.Grit-77/agent-data-tools/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Anlyon alternative

4 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

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Source: MCP Registry. Synced Oct 21, 2026, 18:16 UTC.

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