SimplyRETS MCP by usefulapi
REMOTE · SIMPLYRETS.USEFULAPI.IO
Search SimplyRETS MLS listings and open houses; read listing and market analytics.
Available components
Last scanned (14 minutes ago)
Scores higher than 47% of remote servers
Reachable. Last reached 25 Oct 2026.
Category Maps and Location
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security78
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token. View diagnostics → Pass
- HTTPS enforcement could not be verified: the plaintext port redirected somewhere other than https, so enforcement is unproven. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
- The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents. View diagnostics → Partial
Transport & Reachability0
- Transport check failed: declared streamable-http, but the endpoint redirected instead of responding directly. See how to fix → View diagnostics → Fail
Schema Quality & AI Usability72
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 2995 tokens (~299/item across 10 items; 10 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management17
- Stability observed for 5 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 10 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 11 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 25 Oct 26 +1
- Server version: 1.5.1 → 1.5.3 functional
- Server version: 1.5.0 → 1.5.1 functional
- 24 Oct 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Server version: 1.4.0 → 1.5.0 functional
- Server version: 1.3.0 → 1.4.0 functional
- Server version: 1.1.0 → 1.3.0 functional
- 23 Oct 26 0
- Server version: 1.0.1 → 1.1.0 functional
- 22 Oct 26 +1
- Server version: 1.0.0 → 1.0.1 functional
- 21 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 20 Oct 26 61
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 25 Oct 2026 · Probed https://simplyrets.usefulapi.io/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=usefulapi.io | CN=WE1,O=Google Trust Services,C=US | 13 Sept 2026 | 12 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | d9be3287b0fde9630e825ba1f79bff3f |
| SANs: usefulapi.io, *.usefulapi.io | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of simplyrets.usefulapi.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 38690, 57355 | 8, 8 | Verified |
| usefulapi.io. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Enforced and verified
The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.
| Result | Enforced and verified |
|---|---|
| Enforced | On tool calls |
| HTTP status | 302 |
WWW-Authenticate challenge Bearer realm="OAuth", resource_metadata="https://simplyrets.usefulapi.io/.well-known/oauth-protected-resource/mcp"
Bearer realm="OAuth", resource_metadata="https://simplyrets.usefulapi.io/.well-known/oauth-protected-resource/mcp"Protected resource metadata
| Document | https://simplyrets.usefulapi.io/.well-known/oauth-protected-resource/mcp |
|---|---|
| Retrieved | Yes |
| Resource | https://simplyrets.usefulapi.io/mcp |
| Authorisation server | https://simplyrets.usefulapi.io |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://simplyrets.usefulapi.io/mcp | Redirected | 302 | https://usefulapi.io/simplyrets/ |
| http (plaintext) | http://simplyrets.usefulapi.io/mcp | Inconclusive | 302 | http://simplyrets.usefulapi.io/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
simplyrets_get_account_info Get account info ~70
What these API credentials can reach: the MLS vendor ids (needed as `vendor` on multi-MLS apps), the time of each vendor's last sync, usernames and the available endpoints (/properties, /openhouses, /agents, /offices, /properties/analytics). OPTIONS /.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
simplyrets_get_feed_metadata Get feed metadata ~74
Values present in an MLS feed, to build valid searches: statuses, property types, cities, counties, neighborhoods, areas and features, plus the last sync time. OPTIONS /properties.
| Name | Type | Req | Description |
|---|---|---|---|
| vendor | string | – | MLS vendor id; required on multi-MLS apps (simplyrets_get_account_info lists them). |
No output schema declared.
No examples provided.
simplyrets_get_listing Get listing ~138
One listing by its SimplyRETS id (`mlsId`, the number in search results; NOT the public MLS number `listingId`). Full detail: address, geo, price, photos, agent, office, property, school, tax, remarks. GET /properties/{mlsId}.
| Name | Type | Req | Description |
|---|---|---|---|
| include | array | – | Extra fields to include, when the feed has them. |
| mlsId | integer | yes | SimplyRETS listing id (the `mlsId` field of a search result). |
| vendor | string | – | MLS vendor id; required on multi-MLS apps (simplyrets_get_account_info lists them). |
No output schema declared.
No examples provided.
simplyrets_get_listing_analytics Get listing analytics ~87
Analytics for one listing, such as its price per square foot. GET /properties/{mlsId}/analytics.
| Name | Type | Req | Description |
|---|---|---|---|
| mlsId | integer | yes | SimplyRETS listing id (the `mlsId` field of a search result). |
| vendor | string | – | MLS vendor id; required on multi-MLS apps (simplyrets_get_account_info lists them). |
No output schema declared.
No examples provided.
simplyrets_get_market_analytics Get market analytics ~631
Statistics for the listings a search matches (same filters as simplyrets_search_listings): total count, average price, bedrooms, full baths, living area, lot size and year built, and the number of listings per area. Use it for market summaries of a city, zip or price band. GET /properties/analytics.
| Name | Type | Req | Description |
|---|---|---|---|
| agent | array | – | Listing agent MLS ids (the co-listing agent is not matched). |
| brokers | array | – | Broker or listing office ids, as your MLS provides them. |
| cities | array | – | Cities (case-insensitive). simplyrets_get_feed_metadata lists the cities in the feed. |
| counties | array | – | Counties (case-insensitive). |
| exteriorFeatures | array | – | Exterior features, e.g. 'Porch'. |
| features | array | – | Interior features, e.g. 'Wet Bar'. |
| idx | string | – | IDX display filter. Default 'null' hides listings whose address or entire listing may not be displayed online; 'ignore' returns them too. Your MLS's display rules still bind how you use the data. |
| maxGarageSpaces | integer | – | Maximum garage spaces. |
| maxacres | integer | – | Maximum acreage. |
| maxarea | integer | – | Maximum living area, sq ft. |
| maxbaths | integer | – | Maximum bathrooms. |
| maxbeds | integer | – | Maximum bedrooms. |
| maxdom | integer | – | Maximum days on market (needs Days on Market data in the feed). |
| maxprice | integer | – | Maximum price. |
| maxyear | integer | – | Maximum year built. |
| minGarageSpaces | integer | – | Minimum garage spaces. |
| minacres | integer | – | Minimum acreage. |
| minarea | integer | – | Minimum living area, sq ft. |
| minbaths | integer | – | Minimum bathrooms. |
| minbeds | integer | – | Minimum bedrooms. |
| minprice | integer | – | Minimum price. |
| minyear | integer | – | Minimum year built. |
| neighborhoods | array | – | Neighborhoods or subdivisions (case-insensitive). |
| points | array | – | A polygon of 'lat,lng' points (3 or more); returns listings inside it. Needs latitude/longitude in the feed. |
| pool | array | – | Pool: 'true', 'false' or a value such as 'Private'. |
| postalCodes | array | – | Postal / zip codes. |
| q | array | – | Keyword search over MLS number, street, unit, city, postal code, subdivision and area; several values match any. |
| salesAgent | array | – | Selling agent MLS ids (sales.agent). |
| status | array | – | Listing status (default Active). Closed = sold or leased. |
| subtype | array | – | Property sub type; not every feed supports every value. |
| type | array | – | Property type (default residential and rental). |
| vendor | string | – | MLS vendor id; required on multi-MLS apps (simplyrets_get_account_info lists them). |
| water | array | – | Water body: 'true', 'false' or a value. |
No output schema declared.
No examples provided.
simplyrets_get_open_house Get open house ~94
One open house by its key (the `openHouseKey` of a list result). GET /openhouses/{openHouseKey}.
| Name | Type | Req | Description |
|---|---|---|---|
| include | array | – | Extra fields: rooms. |
| openHouseKey | integer | yes | Open house key from simplyrets_list_open_houses. |
| vendor | string | – | MLS vendor id; required on multi-MLS apps (simplyrets_get_account_info lists them). |
No output schema declared.
No examples provided.
simplyrets_list_agents List agents ~159
The agent roster of the MLS feed: id, name, address, contact and office. Needs the Agents API add-on on your SimplyRETS app (the demo credentials return an empty list). GET /agents.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Results per page, 1-100 (default 10). |
| name | string | – | First name, last name or both. |
| offset | integer | – | Records to skip (the previous reply's next.offset). Do not combine with lastId. |
| q | array | – | Search agent ids and email addresses. |
| state | string | – | Agent address state. |
| vendor | string | – | MLS vendor id; required on multi-MLS apps (simplyrets_get_account_info lists them). |
No output schema declared.
No examples provided.
simplyrets_list_offices List offices ~209
The brokerage office roster of the MLS feed, newest modification first. Needs the Offices API add-on on your SimplyRETS app (the demo credentials cannot use it). Pass count=true for the total. GET /offices.
| Name | Type | Req | Description |
|---|---|---|---|
| count | boolean | – | Also return the total number of matches. |
| limit | integer | – | Results per page, 1-100 (default 10). |
| name | string | – | Partial, case-insensitive office name. |
| offset | integer | – | Records to skip (the previous reply's next.offset). Do not combine with lastId. |
| q | array | – | Match office MLS id, main office MLS id, email (exact) or name (partial). |
| state | string | – | Partial, case-insensitive state. |
| username | string | – | Feed username, when the credentials have several for the vendor. |
| vendor | string | – | MLS vendor id; required on multi-MLS apps (simplyrets_get_account_info lists them). |
No output schema declared.
No examples provided.
simplyrets_list_open_houses List open houses ~331
Upcoming open houses with the listing they belong to: filter by property type, listing id, city, broker, agent, price, size, beds, baths and start date. Page with next.offset or next.lastId. GET /openhouses.
| Name | Type | Req | Description |
|---|---|---|---|
| agent | string | – | Agent id. |
| brokers | array | – | Broker ids. |
| cities | array | – | Cities (case-insensitive). |
| include | array | – | Extra fields: rooms. |
| lastId | integer | – | Cursor: 0 for the first page, then the previous reply's next.lastId (sort is ignored when set). |
| limit | integer | – | Results per page, 1-100 (default 10). |
| listingId | string | – | Only open houses for this public MLS listing id. |
| maxprice | integer | – | Maximum listing price. |
| minarea | integer | – | Minimum living area, sq ft. |
| minbaths | integer | – | Minimum bathrooms. |
| minbeds | integer | – | Minimum bedrooms. |
| minprice | integer | – | Minimum listing price. |
| offset | integer | – | Records to skip (the previous reply's next.offset). Do not combine with lastId. |
| sort | string | – | Sort field; a leading minus is descending. Ignored with lastId. |
| startdate | string | – | Scheduled start of the open house. |
| type | string | – | Property type of the listing (default residential; one type per query). |
| vendor | string | – | MLS vendor id; required on multi-MLS apps (simplyrets_get_account_info lists them). |
No output schema declared.
No examples provided.
simplyrets_search_listings Search listings ~941
Search MLS listings (SimplyRETS /properties): by keyword, status, type, price, beds, baths, area, year, city, zip, neighborhood, agent, broker, features or a map polygon. Returns address, price, status, photos, agent, office, property details and remarks, without empty fields. Pass count=true to get the total. Page with next.offset or next.lastId. GET /properties.
| Name | Type | Req | Description |
|---|---|---|---|
| agent | array | – | Listing agent MLS ids (the co-listing agent is not matched). |
| brokers | array | – | Broker or listing office ids, as your MLS provides them. |
| cities | array | – | Cities (case-insensitive). simplyrets_get_feed_metadata lists the cities in the feed. |
| coListAgent | array | – | Co-listing agent MLS ids. |
| count | boolean | – | Also return the total number of matches (slower on big feeds). |
| counties | array | – | Counties (case-insensitive). |
| exteriorFeatures | array | – | Exterior features, e.g. 'Porch'. |
| features | array | – | Interior features, e.g. 'Wet Bar'. |
| idx | string | – | IDX display filter. Default 'null' hides listings whose address or entire listing may not be displayed online; 'ignore' returns them too. Your MLS's display rules still bind how you use the data. |
| include | array | – | Extra fields: compliance (IDX display data) and rooms (when the feed has them). |
| lastId | integer | – | Cursor: 0 for the first page, then the previous reply's next.lastId (sort is ignored when set). |
| limit | integer | – | Results per page, 1-100 (default 10). |
| maxGarageSpaces | integer | – | Maximum garage spaces. |
| maxacres | integer | – | Maximum acreage. |
| maxarea | integer | – | Maximum living area, sq ft. |
| maxbaths | integer | – | Maximum bathrooms. |
| maxbeds | integer | – | Maximum bedrooms. |
| maxdom | integer | – | Maximum days on market (needs Days on Market data in the feed). |
| maxlistdate | string | – | Listed on or before this date or date-time (UTC unless a timezone is given). |
| maxprice | integer | – | Maximum price. |
| maxyear | integer | – | Maximum year built. |
| minGarageSpaces | integer | – | Minimum garage spaces. |
| minacres | integer | – | Minimum acreage. |
| minarea | integer | – | Minimum living area, sq ft. |
| minbaths | integer | – | Minimum bathrooms. |
| minbeds | integer | – | Minimum bedrooms. |
| minlistdate | string | – | Listed on or after this date or date-time (UTC unless a timezone is given). |
| minprice | integer | – | Minimum price. |
| minyear | integer | – | Minimum year built. |
| modified | string | – | Only listings whose MLS modification time is on or after this date or date-time. |
| neighborhoods | array | – | Neighborhoods or subdivisions (case-insensitive). |
| offset | integer | – | Records to skip (the previous reply's next.offset). Do not combine with lastId. |
| ownership | array | – | Ownership values (feed dependent). |
| points | array | – | A polygon of 'lat,lng' points (3 or more); returns listings inside it. Needs latitude/longitude in the feed. |
| pool | array | – | Pool: 'true', 'false' or a value such as 'Private'. |
| postalCodes | array | – | Postal / zip codes. |
| q | array | – | Keyword search over MLS number, street, unit, city, postal code, subdivision and area; several values match any. |
| salesAgent | array | – | Selling agent MLS ids (sales.agent). |
| sort | string | – | Sort field; a leading minus is descending. Ignored with lastId. |
| specialListingConditions | array | – | Special conditions such as REO, Short Sale or Auction (feed dependent). |
| state | array | – | State or province (case-insensitive). |
| status | array | – | Listing status (default Active). Closed = sold or leased. |
| subTypeText | array | – | Original MLS sub type text values. |
| subtype | array | – | Property sub type; not every feed supports every value. |
| type | array | – | Property type (default residential and rental). |
| vendor | string | – | MLS vendor id; required on multi-MLS apps (simplyrets_get_account_info lists them). |
| water | array | – | Water body: 'true', 'false' or a value. |
No output schema declared.
No examples provided.
How do I install the SimplyRETS MCP by usefulapi server?
SimplyRETS MCP by usefulapi is a hosted endpoint at https://simplyrets.usefulapi.io/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · simplyrets.usefulapi.io
claude mcp add --transport http io-usefulapi-simplyrets 'https://simplyrets.usefulapi.io/mcp'
What is the SimplyRETS MCP by usefulapi server?
SimplyRETS MCP by usefulapi is listed in the public MCP registry as io.usefulapi/simplyrets. Search SimplyRETS MLS listings and open houses; read listing and market analytics. This page covers its hosted endpoint (https://simplyrets.usefulapi.io/mcp).
Is the SimplyRETS MCP by usefulapi server safe to use?
SimplyRETS MCP by usefulapi scores 63 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the SimplyRETS MCP by usefulapi server expose?
SimplyRETS MCP by usefulapi exposes 10 tools: simplyrets_get_account_info, simplyrets_get_feed_metadata, simplyrets_search_listings, simplyrets_get_listing, simplyrets_list_open_houses, and 5 more. Their descriptions and schemas cost roughly 2,734 tokens of context every time the server is loaded.
Does the SimplyRETS MCP by usefulapi server require authentication?
Yes. SimplyRETS MCP by usefulapi asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.
Is the SimplyRETS MCP by usefulapi server still maintained?
SimplyRETS MCP by usefulapi is still listed as active in the MCP registry. We last reached this channel on 25 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.