Onehome Mcp

io.github.chrischallPublished by GitHub account chrischallv1.2.1Updated Nov 7, 2026

OneHome (CoreLogic) real-estate access for Claude — search, property details, photos, saved homes

VerifiedSTDIODesktop onlyLocation & LifestyleFinance

Overview

AI-generated overview

Lets an assistant search the OneHome (CoreLogic) listings a real-estate agent shared, fetch property details and photos, compare homes, and run mortgage math.

What you can do
  • Search and resolve listings: free-text or MLS suggestions, address-to-listing resolution (single or bulk), group and saved-search listing views
  • Read property records: full details by id or portal URL, bulk fetch, media galleries with image variants and room descriptions
  • Compare homes side by side and pull neighborhood context such as nearby schools and walk/transit/bike scores
  • Run local mortgage PITI and 28/36 affordability calculations without network calls
  • Manage sessions: add another magic-link or token session, pick the active one, inspect session scope, and run an auth healthcheck
  • Send raw read-only GraphQL queries as a power-user escape hatch
When to use it
Useful when a buyer or agent works through OneHome shares and wants an assistant to summarize saved homes, pull details and photos, compare candidates, or sanity-check affordability. Not for public listing sites, since OneHome access comes from an agent-issued share.
Requirements
Runs locally as a Node.js process (npm package onehome-mcp, or the published Claude plugin). Needs a OneHome bearer credential: ONEHOME_TOKEN (raw JWT) or ONEHOME_MAGIC_LINK (agent's magic-link URL), or browser-bridge capture via the ContextMint Bridge extension with a signed-in portal tab. Optional: ONEHOME_COMMUNITIES_FILE, FETCHPROXY_IDENTITY_DIR, FETCHPROXY_WS_HOST, ONEHOME_WS_PORT. Network access to services.onehome.com.
Before you install
ONEHOME_TOKEN and ONEHOME_MAGIC_LINK are live per-user bearer credentials granting access to the shared listings; store them as secrets and note that the magic-link token is used directly as the bearer. Browser-capture mode relies on a third-party extension that snapshots the Authorization header, so verify the release checksum. Requests go to services.onehome.com, and the raw GraphQL tool exposes upstream responses. The README states the project is AI-developed and used at your own discretion.

Installation

In SourceWeft

  1. Open Onehome Mcp in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

onehome-mcp

[CI] [npm] [license]

MCP server for OneHome (CoreLogic) — search the listings your real-estate agent curated for you, fetch property details + photos, compare houses side-by-side, and run mortgage / affordability math from within Claude.

Sister project to zillow-mcp, redfin-mcp, compass-mcp, and homes-mcp. Same tool ergonomics — different upstream auth model.

This project was developed and is maintained by AI (Claude). Use at your own discretion.

What's different about OneHome

OneHome isn't a public listings site. Buyers usually reach it through a magic link an agent emails them — https://portal.onehome.com/...?token=eyJ.... That token query param IS the per-user bearer that the portal SPA hands to every GraphQL request.

So instead of routing every fetch through your signed-in browser tab (like the other realty MCPs), onehome-mcp talks directly to services.onehome.com/graphql from Node, with Authorization: Bearer <jwt> attached. We support three ways to source that bearer:

ModeHow to enableNotes
env_tokenONEHOME_TOKEN=<jwt>Paste the raw bearer from devtools Network panel. Most direct.
magic_linkONEHOME_MAGIC_LINK=https://portal.onehome.com/...?token=...Paste the full URL your agent sent — we extract the token param.
fetchproxy_capture(no env) + ContextMint Bridge browser extension installed (Chrome: load the release's chrome zip unpacked; Safari isn't available yet — it will ship inside the ContextMint app, so use Chrome for now) + signed-in portal.onehome.com tabWe wait for your tab to fire any GraphQL request, snapshot the Authorization header, and reuse it.

ContextMint Bridge is the fetchproxy browser extension under its new name, from the same maintainer — fetchproxy's own README (fetchproxy#extension) points to it. Its source is public at nullnet-app/contextmint-bridge: build it yourself, or check a release zip against the .sha256 file published beside it (shasum -a 256 -c contextmint-bridge-chrome-<version>.zip.sha256).

Tools

ToolWhat it does
onehome_get_userSmallest auth probe — returns your OneHome profile (name, email) and the groups your agent shared.
onehome_get_groupsList the OneHome "groups" your agent has shared with you (each one a market / curated listing bucket).
onehome_get_saved_searchFetch an agent-curated saved search by id — name, filter criteria, polygon, and the OSK listing ids that compose the share.
onehome_get_saved_search_with_listingsThe "show me my saved homes" flow in one round trip — saved search plus its inflated listings.
onehome_search_propertiesListings within a group; optionally scoped to a saved search.
onehome_search_suggestionsFree-text suggestion search (address, MLS #) across all feeds.
onehome_get_by_addressResolve a single free-text street address to a listing's portal URL + id.
onehome_resolve_addressesBulk-resolve up to 100 structured addresses to portal URLs + listing ids; concurrent, per-row error capture.
onehome_get_propertyFull property record by listing id or portal URL.
onehome_bulk_getFetch up to N listings in one call — one structured row per id, per-row error capture.
onehome_get_property_photosFull media gallery — Thumbnail / Medium / Large variants + room descriptions.
onehome_compare_properties2-8 listings side-by-side. Per-row error capture; calls are concurrent.
onehome_get_schoolsLocal-Logic primary + high schools near a lat/lng.
onehome_get_walk_scoreLocal-Logic walk / transit / bike / car friendliness scores.
onehome_graphqlPower-user escape hatch — send a raw read-only GraphQL document (queries only; mutations and subscriptions are refused) with variables.
onehome_calculate_mortgageLocal PITI calculator. Same math as the other realty MCPs.
onehome_calculate_affordabilityLocal 28/36 DTI solver — max home price you can afford.
onehome_set_authAdd another authenticated session at runtime (magic link / JWT / email-token) for buyers holding shares across multiple agents.
onehome_set_active_sessionForce a specific registered session to be the active one (overrides MLS-suffix routing).
onehome_get_session_contextList every registered session — auth mode, token expiry, and the group / saved-search / agent scope each bootstrapped.
onehome_healthcheckEnd-to-end auth + GraphQL smoke check with token-expiry diagnostics.

Install

The simplest path is the published Claude plugin (.mcpb install). Its settings take an optional OneHome magic link or bearer token (both stored as sensitive values); leave both blank to use browser-bridge capture instead. For local dev:

bash
git clone https://github.com/chrischall/onehome-mcpcd onehome-mcpnpm installnpm run build

Then point your MCP host at node /abs/path/to/onehome-mcp/dist/bundle.js with one of:

jsonc
// claude_desktop_config.json{  "mcpServers": {    "onehome-mcp": {      "command": "node",      "args": ["/abs/path/to/onehome-mcp/dist/bundle.js"],      "env": {        "ONEHOME_MAGIC_LINK": "https://portal.onehome.com/en-US/properties/map?token=eyJ..."      }    }  }}

Development

bash
npm test               # vitest, mocked transport, no networknpm run test:watchnpm run test:coveragenpx tsc --noEmitnpm run build          # tsc --noEmit + esbuild → dist/bundle.js

Tests use a FakeTransport (in tests/helpers.ts) that registers per-operationName handlers — there's no live network in the test suite. The tests/index.test.ts smoke check loads the same tool registrations src/index.ts uses against an in-memory MCP client/server pair, so "I wrote the tool file but forgot to wire it up" mistakes fail loudly.

License

MIT.

Source: README.md at commit 874f305

Tools

21

onehome_get_user

Get the signed-in OneHome user profile

Returns the OneHome user profile + the consumer-share groups attached. Share member e-mails and the agent's e-mail/phones are omitted unless `include_contacts: true`. For full agent / registered users, queries the GraphQL `user` endpoint. For magic-link consumer-share sessions (where `user { }` is access-denied), falls back to the data captured during the `checkToken` exchange — email, contact id, group/savedSearch ids, and the agent who shared with you.

Parametersviewinclude_contacts

onehome_get_groups

List my OneHome agent groups

List the OneHome groups your agent has shared with you. Share member e-mails and the agent's e-mail/phones are omitted unless `include_contacts: true`. For full agent / registered users, returns the GraphQL `user.groups` list. For magic-link consumer-share sessions (a single shared group), synthesizes a one-entry list from the `checkToken` session context.

Parametersinclude_contacts

onehome_get_session_context

Inspect every registered OneHome session

Returns one entry per registered session — its `session_id`, auth_mode, token expiry, and session scope (group_id / saved_search_id / agent_id / contact_id / mls_id) the MCP bootstrapped from each checkToken exchange. `active_session_id` flags which session answers by default; per-listing routing uses the active session when its `mls_id` matches the listing's `~MLS` suffix, else the one session that matches (several matches error — pick one with `onehome_set_active_session`). Tools default unspecified `group_id` / `saved_search_id` arguments from the active session's context, so this is the easiest way to see what they'll default to. Single-session use (the common case) returns a one-entry `sessions[]`.

Takes no parameters.

onehome_get_saved_search_with_listings

Fetch a saved search and inflate its listings in one call

Combo tool: the "show me my saved homes" flow in a single round trip. Internally runs `GetSavedSearchBySearchId` to fetch the saved search (name, filters, polygon, listingIds) and then `GetSavedListings` to inflate those listingIds into full property records — the same two-call sequence as calling `onehome_get_saved_search` followed by `onehome_search_properties(saved_search_id=...)`, but exposed as one tool so the magic-link-to-listings consumer flow is a single MCP call. Returns `{ saved_search, listings, count, page_info }`. Both `saved_search_id` and `group_id` default to the magic-link session context. Sort defaults to `property.MajorChangeTimestamp DESC` (Newest). Listings are returned via the GraphQL listing-card projection (`buildGetSavedListings`), which does NOT include `PublicRemarks` — so there is no raw `description` to opt back into here. Use `onehome_get_property(listing_id)` per row when you need the full description for a specific listing. `view: "brief"` answers one line per listing instead: `address · price — date of its last change — status, change` (e.g. a new listing or a price decrease), inside the untrusted-data envelope as `data: string[]`, with `-- none` for an empty saved search and `-- N of M shown` when the page holds fewer listings than the search.

Parametersviewgroup_idpage_numpage_sizesort_fieldsort_ordersaved_search_idinclude_dislikes

onehome_search_properties

Search listings inside a OneHome group / saved share

Fetch listings inside a OneHome consumer-share. Two modes: - With `saved_search_id`: fetch the agent-curated collection (the standard 'Homes at <name>' view). The MCP first resolves the saved search's listingIds and then inflates them via listingsBySavedSearchId — this is the only mode that works for non-agent consumer accounts. - With just `group_id` and no `saved_search_id`: try the raw `listings(groupId, browseParameter)` endpoint. If page 0 comes back empty with no reported results (the access-restricted shape consumer-shares hit) AND the session context has a `savedSearchId` for that same group, the tool falls back to the saved-search path and marks the response `fell_back_to_saved_search: true`. If there's no fallback target it raises a clear error rather than silently returning empty. An empty later page (paging past the end) is returned as an empty page, never swapped for the saved-search collection. Both args default from the MCP's bootstrapped session context (the magic-link checkToken response) when neither is passed explicitly. Sort is `MajorChangeTimestamp DESC` ('Newest') unless overridden. `include_dislikes: false` by default — flip it on to include listings you've thumbs-downed in OneHome. Listings here are returned via the GraphQL listing-card projection, which does NOT include `PublicRemarks` — so there is no `description` field on search results and no `include_description` flag to opt into one. Each listing carries the structured `extracted_features` object instead. Use `onehome_get_property(listing_id)` per row when you need the full description for a specific listing.

Parametersgroup_idpage_numpage_sizesort_fieldsort_ordersaved_search_idinclude_dislikes

onehome_search_suggestions

Free-text suggestion search across MLS feeds

Cross-feed suggestion search by address, MLS number, or partial query. Bypasses the group/saved-search structure and hits the global suggestion endpoint — useful for "find an address" or "look up by MLS number". Returns id, address parts, beds/baths, list price, thumbnail per match. Inflate any result with `onehome_get_property`. Optional `group_id` scopes suggestions to one OneHome market.

Parametersqueryrequiredgroup_id

onehome_get_property

Fetch full details for a OneHome listing

Fetch full details for a single OneHome listing by id or portal URL. Returns address, list / close / previous price, $/sqft, beds/baths/sqft, lot size (raw `lot_size` {area, units} plus the derived `lot_size_acres` — null, never 0, for condos / lotless listings), year built, lat/lng, status, HOA fee, annual tax, virtual-tour URL, the primary photo, and an `extracted_features` block (lake_front, hot_tub, basement, furnished, dock, community) keyword-parsed from the description. The raw `description` (PublicRemarks) is omitted by default — pass `include_description: true` to keep it; in most cases the extracted features cover what callers need. OneHome scopes every listing to a group/market — `group_id` defaults to the magic-link session context; pass it explicitly only if you need to query a different group.

Parametersurlgroup_idlisting_idsaved_search_idinclude_description

onehome_get_property_photos

Full photo gallery for a OneHome listing

Fetch the full media gallery for a OneHome listing. Returns one entry per image with Thumbnail / Medium / Large CDN URLs, dimensions, the listing-room description (LongDescription), and display order. Pass either `listing_id` or a portal URL.

Parametersurlgroup_idlisting_id

onehome_compare_properties

Compare OneHome listings side-by-side

Fetch 2 or more OneHome listings and align their facts side-by-side. Each target may supply `listing_id` (preferred) or `url` (a portal URL). Returns the full per-property record (with `extracted_features` populated) per row. Per-target errors are captured per-row — one bad target will not fail the whole call. Calls are concurrent. The raw `description` is omitted from each row by default (`include_description: true` to keep it). The redundant `summary` table is also opt-in via `include_summary: true` — by default only `rows[]` is returned, which already carries every fact.

Parametersviewtargetsrequiredgroup_idinclude_summaryinclude_description

onehome_bulk_get

Bulk-fetch OneHome listings by id

Fetch up to 200 OneHome listings in a single call. Returns one structured row per input id (no side-by-side summary table — use `onehome_compare_properties` for that). Each row is either `{ listing_id, status: "ok", property }` on success or `{ listing_id, status, error_kind, retryable, error }` on failure (`status` = `error_kind`: `timeout` / `bridge_down` / `pending` are retryable, `protocol` / `other` are real misses) — one bad id never fails the whole call. Calls fan out concurrently against `ListingById`, capped at 6 in flight to avoid swamping the bridge; transient timeouts are retried once per row before being captured as an error. The whole call is bounded by an overall deadline: any row still unsettled comes back `status: "pending"` with a top-level `pending` count — re-run just those ids. The envelope reports `count` / `ok` / `errored`. `extracted_features` is populated per row automatically. The raw `description` (PublicRemarks) is omitted by default — pass `include_description: true` to keep it. `group_id` defaults to the magic-link session context.

Parametersgroup_idlisting_idsrequiredsaved_search_idinclude_description

onehome_get_schools

Local-Logic primary + high schools near a lat/lng

Fetch the Local-Logic school data for a coordinate — separate primary and high-school lists, each entry with name, attributes (types/grades/programs/levels), and proximity (walking distance + straight-line distance). Returns an `error` field with HTTP details if the consumer session does not have access (the schools endpoint is sometimes agent-only). lat/lng usually come from `onehome_get_property` (`latitude` / `longitude`).

Parameterslatrequiredlngrequiredlanguage

onehome_get_walk_score

Local-Logic location scores near a lat/lng

Local-Logic location scores for a coordinate — pedestrian / car / cycling / transit friendliness, plus proximity summaries for groceries, restaurants, parks, primary + high schools. Each score is a `{ value, text }` pair (value 0-5, text a one-line description). Returns an `error` field with HTTP details if the upstream rejected the request.

Parameterslatrequiredlngrequiredlanguage

onehome_graphql

Send a raw GraphQL document to services.onehome.com

Power-user escape hatch — send a raw GraphQL document with variables. Returns the whole `{ data, errors, status, url }` envelope, unprojected, so you can read upstream schema errors directly. Note the default: `view` is `compact`, which strips image/avatar URLs out of `data` (every envelope key and every non-media field is kept). Pass `view: 'full'` when you need the envelope byte for byte — worth doing if you are here because a payload is not what you expected, so a missing field is never this server's doing. Operation names live in the portal bundle; common ones include `GetOneHomeUser`, `GetListings`, `GetPins`, `ListingById`, `MediaListingById`, `GetSavedSearches`, `ListingSuggestionsSearch`. (LocalLogic schools/walk-score are REST endpoints, not GraphQL operations — use `onehome_get_schools` / `onehome_get_walk_score`.) Pass `query` (the full document body), an `operation_name` matching the document, and any `variables` as JSON. Read-only: documents containing a `mutation` or `subscription` operation — or that cannot be parsed as a read-only `query` document — are refused.

Parametersviewqueryrequiredvariablesoperation_namerequired

onehome_calculate_mortgage

Calculate mortgage payment (local)

Local-only mortgage payment calculator. Returns a full PITI breakdown (principal + interest, property tax, insurance, HOA, PMI) and total interest over the life of the loan. No network call — fully deterministic, safe to use for scenario comparison without burning a fetch. Provide either `down_payment` OR `down_payment_percent`; defaults to 20%. Property tax can be given as `property_tax_annual` or `property_tax_rate` (% of home price). PMI applies automatically when LTV > 80% and `pmi_rate` is provided.

Parameterspmi_ratehome_pricerequiredhoa_monthlydown_paymentinterest_raterequiredloan_term_yearsinsurance_annualproperty_tax_rateproperty_tax_annualdown_payment_percent

onehome_calculate_affordability

Calculate max affordable home price

Solve for the maximum home price you can afford under the standard 28/36 DTI rule. Inputs: monthly income, recurring monthly debts (car loans, student loans, etc.), down payment, interest rate, and optional property-tax rate / insurance / HOA / loan term. Output: max home price, the binding constraint (front-end vs back-end), and the full PITI breakdown at that price. Same math across the realty MCP cohort (@chrischall/realty-core). No network — pure local math.

Parametershoa_monthlyback_end_dtidown_paymentrequiredfront_end_dtiinterest_raterequiredmonthly_debtsmonthly_incomerequiredloan_term_yearsinsurance_annualproperty_tax_rate

onehome_healthcheck

Verify OneHome auth + GraphQL reachability

Round-trip a minimal authenticated query through the configured transport. Picks `GetSavedSearchBySearchId` for magic-link consumer-shares (works for them) or `GetOneHomeUser` for agent/registered sessions. Returns the auth mode, token expiry, fetchproxy bridge role (when applicable), elapsed time, and any error detail. Run this first when a tool fails — it isolates "is auth wired up?" from "is the API itself misbehaving?".

Takes no parameters.

onehome_get_by_address

Resolve a OneHome listing by street address

Resolve a free-text street address (with optional city/state/zip) to a OneHome listing's canonical portal URL and id in one call. Walks a 2-rung ladder: (1) `ListingSuggestionsSearch` against the magic-link saved-search scope; (2) when that misses, search-fallback — page-walks the broader saved-search (or raw `listings(groupId)`) pool bounded by the same `groupId` and fuzzy-matches input address tokens. Returns `{ url, listing_id, address, resolved, matched_via }` where `matched_via: "suggestions" | "search_fallback"` reports which rung produced the hit. When no listing matches, returns `{ resolved: false, error: "no listing found" }` rather than throwing. Read-only; safe to call repeatedly.

Parameterszipcityviewstateaddressrequiredgroup_id

onehome_resolve_addresses

Bulk-resolve street addresses to OneHome URLs + listing_ids

Resolve up to 100 structured addresses to OneHome canonical portal URLs + listing OSK ids in one call. Each input is a `{address, city?, state?, zip?}` object. Output preserves input order; one row per input, either `{resolved: true, url, listing_id, address}` or `{resolved: false, error, query}`; a row that failed (rather than genuinely missed) also carries `status` = `error_kind` and `retryable` — `timeout` / `bridge_down` / `pending` mean retry it, not "no listing". The whole call is bounded by an overall deadline; unsettled rows come back `status: "pending"` with a top-level `pending` count. Walks the exact same 2-rung ladder as `onehome_get_by_address` via the shared helper (rung 1: `ListingSuggestionsSearch` against the magic-link saved-search scope; rung 2: search-fallback page-walking the broader saved-search / raw-listings pool bounded by `groupId`) — bulk and single cannot diverge. Each row surfaces `matched_via: "suggestions" | "search_fallback"` so callers see which rung produced the hit. Concurrent fan-out capped at 6 in flight to avoid swamping the upstream. Per-row errors captured — one bad address never fails the whole batch. `group_id` defaults to the magic-link session context. Read-only; safe to call repeatedly.

Parametersgroup_idaddressesrequired

onehome_set_auth

Register an additional OneHome session at runtime

Provide a magic-link URL, a raw JWT bearer, or an email-token to ADD another authenticated session to the MCP — useful when a buyer holds shares across multiple agents/MLSes (one magic link per share). The MCP detects the input shape (URL → extract `?token=`; 3-segment JWT → use directly; otherwise → treat as email-token and exchange via `/api/authentication/checkToken`), registers a new direct-bearer transport, and marks it active. Previously-registered sessions stay registered — switch back with `onehome_set_active_session(session_id)`, or let MLS-suffix routing (`~CANOPY`, `~HCAOR`, …) pick automatically per listing. The response includes the assigned `session_id`, the new `active_session_id`, the auth_mode/status, the session_context the checkToken response yielded, and a `bearer_fingerprint` of the resolved JWT (first 8 + `…` + last 4 chars) — never the full bearer. SECURITY: the input itself sits in your chat history; treat magic links as short-lived credentials.

Parametersinputrequired

onehome_set_active_session

Switch which registered OneHome session is active

Force a specific registered session to be the active one. Useful when MLS-suffix routing picks the wrong session (e.g. two shares in the same MLS, a free-text search across multiple MLSes, or a listing without a `~MLS` suffix). Pass a `session_id` previously returned by `onehome_set_auth` or surfaced in `onehome_get_session_context`. The active session answers any request without a `~MLS`-suffixed listing id AND any `~MLS` request whose MLS matches its own; a `~MLS` id matching several other sessions errors until you pick one here.

Parameterssession_idrequired

Version history

14
  1. v1.2.1LatestNov 4, 2026
  2. v1.1.10Oct 17, 2026
  3. v1.1.9Oct 16, 2026
  4. v1.1.8Oct 10, 2026
  5. v1.1.7Oct 7, 2026
  6. v1.1.6Oct 5, 2026
  7. v1.1.5Oct 3, 2026
  8. v1.1.4Sep 28, 2026
  9. v1.1.3Sep 25, 2026
  10. v1.1.2Sep 23, 2026
  11. v1.1.1Sep 23, 2026
  12. v1.1.0Sep 20, 2026
  13. v1.0.0Sep 19, 2026
  14. v0.15.7Sep 16, 2026

Score

90% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 days25 pts
  • Auth declared10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts