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corroborate
Coverage Graph: the independent-source view of a passage's story — how many DISTINCT hosts carry it, and which passages, grouped by source and ranked by host authority.
Behaviour
The anti-hallucination check: one echoed rumour and an independently reported fact look identical in a result list, and different here. `independent_sources` counts every host that asserted the story, including hosts whose copy was folded into this one as a near-duplicate.
Check it before you state something as established.
Arguments
inputSchema
| Name | Type | Description |
|---|---|---|
idrequired | string | Passage id to corroborate |
limit | integer | — |
Returns
A JSON payload in the text content block, and the same payload as
structuredContent for clients that support it.
outputSchema
| Name | Type | Description |
|---|---|---|
independent_sourcesrequired | integer | Distinct hosts asserting this story |
merged_duplicatesrequired | integer | Copies folded into the survivor |
sourcesrequired | object[] | — |
story_id | string | null | — |
Calling it
Over Streamable HTTP, with the required arguments filled in:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "corroborate",
"arguments": {
"id": "<id>"
}
}
}Most clients do this for you — see Connect a client. To drive it by hand, complete the startup lifecycle first.