Records published claims: one to correct a number, many to import a leaderboard.

POST /v1/benchmark/claims

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Address	`https://api.hanzo.ai/v1/benchmark/claims`
Method	`POST`
Operation	`post_benchmark_claims`
Auth	`Authorization: Bearer $HANZO_API_KEY`

Records published claims: one to correct a number, many to import a leaderboard. Every row must carry a Source, because a claim without its citation is a number nobody can check — and an unattributed number in the published plane is indistinguishable from a measurement, which is the one confusion this whole surface is built to prevent.

Writes are append-only, so this never destroys the value it replaces. A vendor restating a score leaves both rows on disk, which is how the restating itself becomes visible.

Request

8 fields, body application/json (required).

Field	In	Type	Required	Description
`by`	body	string	—	By is who is recording them — a person, or the importer's name.
`data`	body	publishedClaim[]	—	Data is the claims to record. One row is a correction; many is an import.
`data[].benchmark`	body	string	—	Benchmark is the canonical test id the claim is about, from /catalog.
`data[].model`	body	string	—	Model is the system the score is claimed for.
`data[].protocol`	body	string	—	Protocol records HOW it was scored — provider-reported, agentic, third-party-leaderboard — because a provider card and a third party running its own harness…
`data[].provider`	body	string	—	Provider is who the claim belongs to — the lab or leaderboard whose number this is.
`data[].score`	body	number	—	Score is the reported aggregate, as a percentage.
`data[].source`	body	string	—	Source is the citation the row was read from.

Response

Status	Body	Meaning
`200`	putClaimsOut	ok

200 body — 2 fields.

Field	In	Type	Always	Description
`recorded`	body	integer	—	Recorded is how many rows were written.
`rejected`	body	string[]	—	Rejected names the rows that were not, and why.

Failure carries the platform error shape — see Errors.

Examples

hanzo benchmark claims create

import { Configuration, BenchmarkApi } from 'hanzoai';

const api = new BenchmarkApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.postBenchmarkClaims({ by: "<by>", data: [{"benchmark":"<benchmark>","model":"<model>","protocol":"<protocol>","provider":"<provider>"}] });

from hanzoai.cloud import ApiClient, Configuration
from hanzoai.cloud.api import BenchmarkApi

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = BenchmarkApi(client).post_benchmark_claims(by="<by>", data=[{"benchmark":"<benchmark>","model":"<model>","protocol":"<protocol>","provider":"<provider>"}])

cfg := cloud.NewConfiguration()
cfg.AddDefaultHeader("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY"))
client := cloud.NewAPIClient(cfg)

resp, _, err := client.BenchmarkAPI.PostBenchmarkClaims(context.Background()).Execute()
if err != nil {
	return err
}

use hanzo_cloud::apis::{configuration::Configuration, benchmark_api};

let mut cfg = Configuration::new();
cfg.bearer_access_token = std::env::var("HANZO_API_KEY").ok();

let result = benchmark_api::post_benchmark_claims(&cfg, Default::default()).await?;

import ai.hanzo.cloud.ApiClient;
import ai.hanzo.cloud.api.BenchmarkApi;

ApiClient client = new ApiClient();
client.setRequestInterceptor(b -> b.header("Authorization", "Bearer " + System.getenv("HANZO_API_KEY")));

var result = new BenchmarkApi(client).postBenchmarkClaims();

curl -X POST https://api.hanzo.ai/v1/benchmark/claims \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "by": "<by>",
       "data": [
         {
           "benchmark": "<benchmark>",
           "model": "<model>",
           "protocol": "<protocol>",
           "provider": "<provider>"
         }
       ]
     }'

The door reaches benchmark through the benchmark tool, which names its 6 operations with its own verbs — this one among them, under a name only the door declares. describe explains any of them:

curl -X POST https://api.hanzo.ai/v1/mcp \
  -H "Content-Type: application/json" \
  -d '{
       "jsonrpc": "2.0",
       "id": 1,
       "method": "tools/call",
       "params": {
         "name": "describe",
         "arguments": {
           "op": "get_benchmark_catalog"
         }
       }
     }'

Benchmark API · All Hanzo APIs · Interactive reference

Records published claims: one to correct a number, many to import a leaderboard.

Request

Response

Examples

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