heritage_narration

ai.mapmap/mapmap · Verify this server

Three to five short spoken lines an hour about the ground a route is on: one sentence, at the point the driver reaches the thing it is about, and then silence. Not a tour and not a chatbot. NOTHING IS GENERATED HERE: every line is a sentence a person wrote from a public-domain plaque inscription and a person reviewed, compiled into the gateway binary, so no model runs in this path and the lines are identical for every driver. Give `geometry_polyline6` from the `route` tool and, IMPORTANT, `duration_s` from the same answer: without it the silence budget falls back to a distance, and "four lines an hour" is a claim about time that a distance answers wrongly at both ends. Optional `min_gap_s`, `min_gap_m`, `max_offset_m` (default 60, hard ceiling 80), `max_lines` and `voice_format` ("opus" or "m4a", which adds each line's audio cache key and URL and NEVER synthesises). COVERAGE IS ONE CORRIDOR, deliberately: the Chelsea riverside, 18 reviewed lines over 5 km. EVERY OTHER ROUTE ANSWERS WITH NO LINES, and that is a correct answer rather than a failure. ALWAYS READ THE CENSUS, which is the record of WHAT WAS NOT SAID: no lines with every entry in `beyond_reach` means this feature does not cover the journey; no lines with entries in `silenced_by_budget` means the corridor is covered and the budget is holding them back. They are different answers and must never be relayed the same way. On the reference route the census reports 1 spoken and 17 silenced, which is the design working, not a thin corpus. Every line publishes `offset_m`, the measured distance from the plaque to the route, because it is the entire warrant for the word "here", and `plaque_ids` so any claim can be taken back to its source. TWO OMISSIONS ARE DELIBERATE: no line says anything is visible, still standing or unchanged (a plaque records that somebody was somewhere, and nothing more), and NO LINE SAYS WHICH SIDE OF THE ROAD anything is on, because nothing in the source records it and a look that finds nothing spends the driver's trust in everything else. Do not add either. COSTS 1 UNIT a call: it reads no tiles and opens no archive. Requires the MapMap gateway (GATEWAY_URL + GATEWAY_API_KEY).