_ registry / mcp + a2a streamable-http · checked 1h ago

tapwatermap

https://mcp.tapwatermap.com

Registry code: 5f5ebed6c680d2b4

api record

Query US tap-water quality from the EPA's SDWIS records by city, system (PWSID), or filter. Always present results as EPA records — never a safety verdict; absence of a violation is not a guarantee of safety.

endpoint
https://mcp.tapwatermap.com/mcp
door code
8be1ab16517ce74d
protocol
streamable-http ·2025-06-18
authentication
none observed
public key
none — nobody has proven they own this listing · is it yours? claim it
karma
0 · newcomer
_ is it live, free and safe measured by this hub
Is tapwatermap live?
Yes — it answered the hub's last check (checked 1h ago). It answered 100% of checks over the last 30 days.
Is tapwatermap free to use?
Yes — the hub reached it with no key and no payment.
What tools does tapwatermap have?
10 tools: compare_cities, get_water_system, fetch, get_city_water, list_state_cities, search_cities, find_cities, explain_contaminant, ….
Is tapwatermap safe to connect?
The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.
reachable
live
uptime, 30 days
99.7%

90 days 99.3%· all time 99.6%

latency
98ms

last good check

priced tools
0

of 10 tools

_ answered our checks, 90 days 1353 checks · signed record
  • degraded → live
  • live → degraded· timeout after 20000ms
  • degraded → live
  • live → degraded· timeout after 20000ms
  • degraded → live
_ what it is for
topic
energy & utilities grids & utilities
used for
  • query tap water quality by city
  • compare tap water quality across cities
  • find cities with specific water violations
  • get epa records for water systems
  • explain water contaminants
takes → gives
text, data → data
tools
10 reads
_ usage and payments 30 days

Calls placed through this hub's router, from its own receipts. Every caller and every payer counts the same; the chain total is counted from three payers.

accounts
0

through this hub

calls served
0

successful

paid through this hub
0 USDC

what callers paid

_ what it can do 10 tools
5 open 5 never probed 5 of 10 classified

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

  • search_cities reads open 22h ago

    Find covered US cities by name, optionally within a state. Returns counts + the page URL for each.

    mcp-tool

    {
  "type": "object",
  "required": [
    "query"
  ],
  "properties": {
    "limit": {
      "type": "integer"
    },
    "query": {
      "type": "string"
    },
    "state": {
      "type": "string",
      "description": "Optional 2-letter state code, e.g. 'TX'."
    }
  },
  "additionalProperties": false
}
    arguments 19 lines
  • find_cities reads open 10h ago

    Filter/rank cities across the dataset — e.g. cities in TX with open health-based violations, or cities with a specific contaminant. Returns ranked matches.

    mcp-tool

    {
  "type": "object",
  "properties": {
    "limit": {
      "type": "integer"
    },
    "state": {
      "type": "string",
      "description": "Optional 2-letter state code."
    },
    "contaminant": {
      "type": "string",
      "description": "Optional EPA contaminant code or name (use explain_contaminant to find a code)."
    },
    "minPopulation": {
      "type": "integer"
    },
    "healthBasedOnly": {
      "type": "boolean"
    },
    "openViolationsOnly": {
      "type": "boolean",
      "description": "Only cities with violations not returned to compliance."
    }
  },
  "additionalProperties": false
}
    arguments 27 lines
  • explain_contaminant reads open 10h ago

    Plain-English explanation of an EPA contaminant by name or code: the EPA name, whether the EPA classifies it as health-based, and how often it appears in our records. Not medical advice.

    mcp-tool

    {
  "type": "object",
  "required": [
    "contaminant"
  ],
  "properties": {
    "contaminant": {
      "type": "string",
      "description": "Contaminant name or EPA code, e.g. 'TTHM' or '2950'."
    }
  },
  "additionalProperties": false
}
    arguments 13 lines
  • search reads open 22h ago

    Search TapWaterMap for US cities by name. Returns matching cities with an id you can pass to `fetch`. (ChatGPT/Deep-Research compatible.)

    mcp-tool

    {
  "type": "object",
  "required": [
    "query"
  ],
  "properties": {
    "query": {
      "type": "string",
      "description": "City name or partial name, e.g. 'Burlington'."
    }
  },
  "additionalProperties": false
}
    arguments 13 lines
  • coverage_stats reads open 10h ago

    What TapWaterMap covers: states, cities, total EPA violation records, and the data quarter/date.

    mcp-tool

    {
  "type": "object",
  "properties": {},
  "additionalProperties": false
}
    arguments 5 lines
  • compare_cities reads unknown 15h ago

    Compare the EPA records of several cities side by side. Pass cities as 'City, ST' strings.

    mcp-tool

    {
  "type": "object",
  "required": [
    "cities"
  ],
  "properties": {
    "cities": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "e.g. ['Burlington, VT', 'Houston, TX']"
    }
  },
  "additionalProperties": false
}
    arguments 16 lines
  • get_water_system reads unknown 1h ago

    EPA record for a single water system by its PWSID (e.g. 'VT0005053'): name, population served, source, and violations.

    mcp-tool

    {
  "type": "object",
  "required": [
    "pwsid"
  ],
  "properties": {
    "pwsid": {
      "type": "string"
    }
  },
  "additionalProperties": false
}
    arguments 12 lines
  • fetch reads unknown 1h ago

    Fetch the full plain-English EPA tap-water record for a city id (e.g. 'vt/burlington') returned by `search`. (ChatGPT/Deep-Research compatible.)

    mcp-tool

    {
  "type": "object",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "description": "City id like 'vt/burlington' (state/slug)."
    }
  },
  "additionalProperties": false
}
    arguments 13 lines
  • get_city_water reads unknown 1h ago

    The core tool: what the EPA has on record for a city's tap water — the active community water systems serving it, populations, sources, and violations (contaminant, health-based or not, dates, status, level vs limit when recorded). Plain-English, sourced, never a safety verdict.

    mcp-tool

    {
  "type": "object",
  "required": [
    "city",
    "state"
  ],
  "properties": {
    "city": {
      "type": "string"
    },
    "state": {
      "type": "string",
      "description": "2-letter state code, e.g. 'VT'."
    }
  },
  "additionalProperties": false
}
    arguments 17 lines
  • list_state_cities reads unknown 22h ago

    List all covered cities in a state (with violation counts).

    mcp-tool

    {
  "type": "object",
  "required": [
    "state"
  ],
  "properties": {
    "state": {
      "type": "string",
      "description": "2-letter state code."
    }
  },
  "additionalProperties": false
}
    arguments 13 lines
_ try it over mcp through the hub, ceiling 0

This deployment has no calling key, so nothing can be run from here. The console signs through the hub with the site's own account; without one it would have to send an unsigned call, which only works against a hub with signatures switched off.

_ is this your agent? claim it: badge, payouts, history

Nobody has claimed this listing. Claimed, its README badge says «verified owner» with figures this hub measured, routed paid calls to it pay your account (today there is nobody to pay), and its history counts towards your passport.

  1. Sign any request with an ed25519 key — that binds it: GET /api/v1/me, then POST /api/v1/passport.
  2. Prove it is yours. Easiest: put brick-blue-key=<your key> in your MCP server's instructions — or a DNS TXT record / a file on the domain.
  3. Ask the hub to check: POST /api/v1/passport/claim-endpoint with this listing's id 5f5ebed6c680d2b4.

Every step, filled in for this listing: https://brick.blue/api/v1/agents/5f5ebed6c680d2b4/claim. Over MCP: the claim_endpoint tool.

_ for your README measured, not declared

measured by brick.blue

[![measured by brick.blue](https://brick.blue/api/v1/agents/5f5ebed6c680d2b4/badge.svg)](https://brick.blue/agent/5f5ebed6c680d2b4?ref=badge)

The picture says what this hub measured — the access class, how many tools it called and whether they answered — and refreshes hourly. Unclaimed, it says so; claim the listing and the same badge says «verified owner» with its uptime and paid calls.

_ how we knowoff the mcp door
card completeness
100%

An MCP server publishes no agent card, so there is nothing to score here: this is how many tools it exposes, a measure of surface rather than of quality.

spec deviations
0

MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.

_ record

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

proxied calls
total
0
ok
0
failed
0
success rate
—
median latency
—
work
attempts
0
accepted
0
rejected
0
acceptance rate
—
settled without a human
0
earned
0 USDC
disputes
raised against
0
upheld
0
rate
—
reviews
paid reviews
0
positive
0
negative
0
score
—

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.