Create dependency graph

Returns the service dependency graph over the requested window: every parent→child edge observed, with call and error rates and latency percentiles per edge.

POST /v1/o11y/dependency_graph

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Address	`https://api.hanzo.ai/v1/o11y/dependency_graph`
Method	`POST`
Operation	`post_o11y_dependency_graph`
Auth	`Authorization: Bearer $HANZO_API_KEY`

Returns the service dependency graph over the requested window: every parent→child edge observed, with call and error rates and latency percentiles per edge.

Callers need the viewer role; the runtime's own gate enforces it.

Request

9 fields, body application/json (required).

Field	In	Type	Required	Description
`end`	body	string	yes	End is the window end, as epoch nanoseconds.
`start`	body	string	yes	Start is the window start, as epoch nanoseconds.
`tags`	body	o11y.O11yTagFilter[]	—	Tags narrow the graph to spans matching every condition.
`tags[].boolValues`	body	boolean[]	—	BoolValues are the values matched when the tag holds booleans.
`tags[].key`	body	string	—	Key is the tag to test.
`tags[].numberValues`	body	number (double)[]	—	NumberValues are the values matched when the tag holds numbers.
`tags[].operator`	body	string	—	Operator is the comparison to apply — in, not_in, equals, contains and the other operators the trace filter grammar names.
`tags[].stringValues`	body	string[]	—	StringValues are the values matched when the tag holds strings.
`tags[].tagType`	body	string	—	TagType says which kind of value the tag holds: string, number or bool.

Response

Status	Body	Meaning
`200`	o11y.O11yDependency[]	ok
`202`	Approval	held for approval
`default`	problem-details	refused

200 body — 10 fields.

Field	In	Type	Always	Description
`[].callCount`	body	integer (uint64)	—	CallCount is how many calls crossed the edge in the window.
`[].callRate`	body	number (double)	—	CallRate is calls per second.
`[].child`	body	string	—	Child is the called service.
`[].errorRate`	body	number (double)	—	ErrorRate is the percentage of calls that erred.
`[].p50`	body	number (double)	—	P50 is the median call duration, in nanoseconds.
`[].p75`	body	number (double)	—	P75 is the 75th-percentile call duration, in nanoseconds.
`[].p90`	body	number (double)	—	P90 is the 90th-percentile call duration, in nanoseconds.
`[].p95`	body	number (double)	—	P95 is the 95th-percentile call duration, in nanoseconds.
`[].p99`	body	number (double)	—	P99 is the 99th-percentile call duration, in nanoseconds.
`[].parent`	body	string	—	Parent is the calling service.

Failure carries the platform error shape — see Errors.

Examples

CLI

SDK

HTTP

MCP

hanzo o11y dependency_graph \
  --end <end> \
  --start <start>

.ts

.py

.go

.rs

.java

import { Configuration, O11yApi } from 'hanzoai';

const api = new O11yApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.postO11yDependencyGraph({ start: "<start>", end: "<end>" });

from hanzoai.cloud import ApiClient, Configuration
from hanzoai.cloud.api import O11yApi

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = O11yApi(client).post_o11y_dependency_graph(start="<start>", end="<end>")

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

resp, _, err := client.O11yAPI.PostO11yDependencyGraph(context.Background()).Execute()
if err != nil {
	return err
}

use hanzo_client::apis::{configuration::Configuration, o11y_api};

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

let result = o11y_api::post_o11y_dependency_graph(&cfg, Default::default()).await?;

import ai.hanzo.cloud.ApiClient;
import ai.hanzo.cloud.api.O11yApi;

ApiClient client = new ApiClient();
client.setBearerToken(System.getenv("HANZO_API_KEY"));

var result = new O11yApi(client).postO11yDependencyGraph();

curl -X POST https://api.hanzo.ai/v1/o11y/dependency_graph \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "start": "<start>",
       "end": "<end>"
     }'

MCP reaches o11y through the o11y tool, which names its 307 operations with its own verbs — this one among them, under a name only MCP 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": "list_o11y_autocomplete_aggregate_attributes"
         }
       }
     }'

O11y API · All Hanzo APIs · Interactive reference

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