Read Haystack entities from the 75F platform by filter or by id
domain: support.75f.io · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Obtain a bearer token first via the 75F Oauth API
GET https://api.75f.io/ph/read?filter=<Haystack filter expression> to query by tags, e.g. filter=point and siteRef==@<siteId> and vav and zone and current and temp
Alternatively send a grid with an id column containing one or more Ref identifiers to read specific points by id
Send the bearer token in the Authorization: Bearer header and the subscription key in Ocp-Apim-Subscription-Key
Parse the response grid's cols/rows; a row of all-null cells (N,N,N) means that particular id was not found
Known gotchas
Only users assigned as a Secondary Manager of a site can sample or write point data for that site
Filter syntax follows Project Haystack filter grammar, not a 75F-proprietary query language
An optional limit parameter caps the number of entities returned on a filter-based read; omitting it can return very large result sets
Give your agent this knowledge — and 15,500+ more routes
One MCP install gives any agent live access to the full route map across 5,700+ domains, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp
Need this verified for your stack — or a route we don't have yet?