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TEOS — Agent Tools (MCP Server)

Small paid utilities for agents, priced per call in USDC over x402. No signup. No API key. Point an MCP-capable agent at this server and it can see and call the tools.

Built by Elias Easton / TEOS.

Tools

Free discovery

Tool

What it does

teos_catalog

List everything TEOS offers, with prices and accepted networks

teos_how_to_buy

Plain-language instructions for paying via x402

Paid (USDC per call, via x402)

Tool

What it does

check_domain

DNS A records, valid TLS/SSL, certificate expiry — in one call

is_site_up

Is a URL up or down right now? Returns http_status, reachable, latency_ms

summarize_url

Fetch a page and return a short summary + title + source

extract_keyphrases

Key phrases and core theme from any text

advise_decision

A decision + concrete recommendation + next actionable step

clean_data

Clean/validate/normalize messy JSON, CSV, text, list, or date

verify_claim

Check a claim against the live web; returns verdict + evidence + sources

grounding_line

One grounded line to steady a stressed or stuck situation

Related MCP server: NEX Agent Co. MCP Server

Install

npx -y @teos/agent-tools

Or clone and run:

npm install
node server.mjs

Configure your agent (MCP)

Add to your MCP client config:

{
  "mcpServers": {
    "teos": {
      "command": "npx",
      "args": ["-y", "@teos/agent-tools"],
      "env": { "TEOS_BASE_URL": "https://teos.144.202.19.248.sslip.io" }
    }
  }
}

How payment works

  1. The agent calls a tool → TEOS responds HTTP 402 with machine-readable payment terms.

  2. An x402-capable client signs a USDC payment and retries with the payment header.

  3. The facilitator verifies and settles → the tool returns JSON.

Accepted rails: Solana, Base, Polygon (USDC). Facilitator: https://facilitator.payai.network.

Discovery (free, no payment)

  • Manifest: https://teos.144.202.19.248.sslip.io/.well-known/x402

  • ARD: https://teos.144.202.19.248.sslip.io/.well-known/ard.json

  • Plain text: https://teos.144.202.19.248.sslip.io/llms.txt

License

MIT

Available Tools

10 tools
advise_decisionA

Give a decision or set of options; get a concrete recommendation with the next actionable step. Paid. Returns recommendation, next_step, reasoning.

Inputs: question (required).

check_domainA

Check any domain for live DNS A records, valid TLS/SSL, and certificate expiry in one call. Paid. Returns dns, tls_valid, cert_expiry.

Inputs: domain (required).

clean_dataA

Send messy data; get it back clean, validated, and normalized. Paid. Modes: json (parse+pretty+validate), csv (normalize to RFC4180), text (strip junk lines/whitespace/dupes), list (dedupe+sort+trim), date (normalize to ISO-8601). Returns cleaned output plus what was fixed.

Inputs: data (required), mode (required).

extract_keyphrasesA

Give any text; get the key phrases that carry its meaning and the core theme. Paid. Returns keyphrases, theme.

Inputs: text (required).

grounding_lineB

Send a stressed or stuck situation; get one grounded line to steady on. Paid. Returns grounding.

Inputs: situation (required).

is_site_upB

Is a URL up or down right now? Paid. Returns http_status, reachable, latency_ms.

Inputs: url (required).

summarize_urlA

Fetch a web page and return a short summary with its title and source. Paid. Returns title, summary, source_url.

Inputs: url (required).

teos_catalogA

List everything TEOS offers: free discovery files plus paid per-call tools with prices. Free. TEOS is a catalog of small paid utilities for agents, priced per call in USDC over x402.

Inputs: no named parameters.

teos_how_to_buyA

Plain-language instructions for paying a TEOS tool via x402 (USDC). Free. Use when your agent needs to know how to buy and call a TEOS tool.

Inputs: no named parameters.

verify_claimA

Check a claim against the live web. Paid. Send a claim (e.g. 'example.com uses Cloudflare') and an optional target URL; get back a verdict (supported | contradicted | unverifiable), the evidence found, and the sources checked. Grounds an agent's statements in reality.

Inputs: claim (required), url.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

Loading tool schema changelog…

    TDQS

    A3.5/5.0

    Scored across 10 tools

    Disambiguation4/5

    Most tools target clearly distinct operations (catalog, purchase help, domain check, summarize, keyphrases, decision advice, data cleaning, claim verification, grounding). The only mild overlap is check_domain vs is_site_up, both probing site health, though DNS/TLS vs HTTP reachability are separable.

    Naming Consistency3/5

    Mostly verb_noun (check_domain, summarize_url, extract_keyphrases, advise_decision, clean_data, verify_claim), but is_site_up is a question form, grounding_line is a bare noun, and teos_catalog/teos_how_to_buy use a namespace prefix. Mixed conventions but still readable.

    Tool Count4/5

    10 tools is a reasonable size for a catalog of paid utilities, with two discovery/payment tools plus eight distinct capabilities. The breadth is wide but each tool earns its place.

    Completeness4/5

    Discovery (teos_catalog) and payment guidance (teos_how_to_buy) cover the onboarding lifecycle for a paid-utility catalog, and each utility is self-contained. No obvious dead ends, though account/balance or usage-tracking operations are absent.

    Maintenance

    ActivitySlowing
    ResponsivenessOutdated data

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