Claude Harness connectorWhat Claude can do in your Harness account.
The Claude Harness connector exposes 11 tools. 7 read your account, 4 create, change, delete or run something in it, and 0 are left undocumented. Below: what Claude can trigger for you, what slips through without a prompt, and what Harness has to switch on first.
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Why connect Harness to Claude
Harness runs your delivery pipelines, the chain that builds, tests and deploys your code. With the connector you drive it from Claude: a deploy failed, you ask why, and Claude pulls the execution details without you opening the console. Eleven generic tools cover 259 resource types, from pipelines and feature flags to cloud cost data.
Get to the root of a failure in one question. Friday's release blew up: harness_diagnose returns the timing of each stage and step plus the failure details, and Claude points at the one that broke.
Check a project's pulse. Ahead of standup, harness_status lays out project health, with recent executions, failure rates and deep links back into Harness.
Act without switching tabs. harness_execute reruns a pipeline, flips a feature flag or syncs a GitOps app, and harness_create sets up a new resource from the description you give it.
What Claude does not do here: it does not watch anything around the clock. No tool wakes up when a run fails at 3am; you have to ask. It never goes beyond your Harness permissions. And the confirmation prompt Harness designed for risky operations depends on what your Claude client can display (see the limits). For a chain that reacts to an event on its own, you need an automation tool, a different trade; the Integrations hub covers that side. For a connector built around project work instead of delivery, look at the Claude asana connector.
Vocabulary in one minute
Five words so the rest of the page reads cleanly.
- Connector
- The link you set up once between Claude and your Harness account, so Claude can work in it while it answers you.
- Tool
- One named action the connector hands to Claude. Claude decides which to call by itself, and the directory sheet lists each one by name.
- Authorization
- Harness's own sign-in screen, where you give Claude the access it will use afterwards. Granted once per person and withdrawn the same way.
- Approval
- The confirmation Claude waits for before it completes an action that would change your account, shown in the conversation when needed.
- MCP
- The shared standard behind connectors, which is what lets an assistant like Claude exchange with an outside service such as Harness.
Connect Harness to Claude
- 01
Find Harness in the list
In Claude's settings, open Customize, then Connectors, and search for Harness. On a Team or Enterprise workspace, an Owner or Primary Owner enables the connector for the organization first, then everyone connects with their own account.
- 02
Sign in to Harness
Click Connect on the Harness row and sign in through the window Harness opens itself. Use the account whose permissions match what you actually want Claude to be able to touch.
- 03
Approve the authorization screen
Read Harness's authorization screen before you accept: it sets what the access covers, not Claude. If the link breaks, use Disconnect and connect again; you can also withdraw access from Harness itself.
The 11 tools of the Claude Harness connector
Harness gives Claude 11 tools: 7 that read your account, 4 that change something in it.
Seven tools that look, four that act. Each one works across any Harness resource type, from a pipeline to a cloud connector. Names stay exactly as Claude shows them.
- 7 read
- 4 write
What Claude reads (7)
7 toolsSeven tools that look at your Harness account without touching it.
harness_list
Lists resources of a given type with filters, search and pagination: pipelines, services, environments, projects. Claude uses it to take stock before zooming in on one item.
harness_get
Fetches one specific resource by its identifier and returns its full record. It is the natural next step after a list, once Claude has spotted the item you care about.
harness_search
Runs a single query across several resource types at once.
harness_diagnose
Inspects a pipeline, a connector, a delegate or a GitOps application. For a pipeline, it breaks down stage and step timing and the failure details; for the others, it returns health and troubleshooting signals.
harness_describe
Maps out what the server knows how to handle: resource types, allowed operations and the fields of each. It does not query your account at all, it reads a description bundled with the server.
harness_status
Shows a live health dashboard for a project: recent executions, failure rates and direct links into the Harness console.
harness_schema
Retrieves the exact YAML or JSON definition of a resource type, with examples. Claude leans on it to draft a valid description before it takes any action.
What Claude changes (4)
4 toolsFour tools that act on your account. Harness adds a server-side prompt for risky operations; on Claude's side, the general rule below applies.
harness_create
Approval: see the ruleCreates a new Harness resource, including a pipeline stored directly in Harness or in a Git repository. You describe what you need, Claude produces the definition and submits it.
harness_update
Approval: see the ruleUpdates an existing resource, Git-backed pipelines included. Claude takes the current definition, applies the change you asked for and sends the new version back to Harness.
harness_delete
Approval: see the ruleDeletes a resource from your Harness account. Harness labels this operation destructive.
harness_execute
Approval: see the ruleTriggers an action on a resource: run or retry a pipeline, import a pipeline from Git, toggle a feature flag, sync a GitOps application.
What Claude checks with you first
By default, Claude stops and asks before any action it takes on an account on your behalf. With Harness, a second layer lives on the server side.
On a Team or Enterprise workspace, owners decide whether members can let some actions through without being asked again. They can also cap what a connector does across the organization, for instance keep reading open and block writing, and nobody overrides that from their own account. Harness, for its part, ranks each operation by risk and only shows its own prompt above the low tier. Claude also works with your Harness permissions and nothing more. The official per-tool labels only appear in the settings of a connected account.
Which Claude plans include Harness
Of the 819 sheets in the official directory, none shows plan availability. Connector by connector, that information is not published anywhere.
The general rule is public: remote connectors are open to all users on Claude, Cowork, Claude Desktop and mobile. On Team and Enterprise, an Owner or Primary Owner enables the connector for the organization before each member connects. For Harness's current status on your account, check its sheet in the official directory. Turning the service on at Harness is a separate step handled with their support team.
Where the Harness connector stops
A connector is not an automation. Claude calls these tools while it answers you, so nothing fires when a build fails or a deploy finishes.
Only the publisher documents this connector: neither Claude's help center nor Anthropic's developer docs have a page for it, and the limits below come from Harness's repository. The tool list is an observed floor, since an admin can open actions no public sheet shows. The partner badge is not a security audit, and Anthropic notes on every sheet that it does not choose a publisher's tools or vouch for how they behave. Harness also documents a self-hosted version of the server, with its own settings.
Need help connecting Harness to Claude?
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