# Use DevTune with ChatGPT Canonical: https://devtune.ai/integrations/chatgpt Connect ChatGPT to your DevTune project, then ask it what AI platforms say about your product, what to fix next, and whether a shipped fix moved the numbers. ## Before you start - A DevTune project on a plan that includes API access. No account yet? [Let your agent set one up](https://docs.devtune.ai/getting-started/agent-setup). - ChatGPT on the web. If you do not see **Add custom MCP server**, your workspace admin controls who can add one. ## Connect by signing in 1. Open [chatgpt.com/plugins](https://chatgpt.com/plugins). 2. Select the plus button, then **Add custom MCP server**. 3. Enter `DevTune` as the name. 4. Under **Connection**, paste `https://devtune.ai/api/mcp` as the **Server URL**. 5. Set the authentication to **OAuth**. 6. Review the risk warning and select **I understand and want to continue**. 7. Select **Create as a plugin**. 8. Install the plugin. When ChatGPT asks, sign in to DevTune, select the project, choose the scopes the connection may use, and approve. The connection reaches the project you select, with your own DevTune permissions. ## Check the connection In a chat, type `@` in the prompt box and select the DevTune plugin. Then ask ChatGPT: ```text Which DevTune project are you connected to? ``` It answers with your project's name, read with `devtune_get_connection_context`. If it names the wrong project, connect again and select the right one. ## Measure Ask ChatGPT what AI platforms say and what AI systems fetch from your site: ```text What is our share of voice across AI platforms over the last 30 days, and how has it changed? ``` ```text Which pages and domains do AI platforms cite for our topics, and which competitors get cited where we are not? ``` ```text What are AI systems fetching from our site, and which pages do they ask for that do not exist? ``` ChatGPT answers from `devtune_get_visibility_summary`, `devtune_get_visibility_diff`, `devtune_get_competitive_position`, `devtune_get_top_citation_pages`, `devtune_get_content_gaps`, `devtune_get_traffic_summary` and `devtune_get_404_demand`. Measurement windows are 30 or 90 days. ## Fix Ask for the ranked fixes, then work one through: ```text List the top five actions DevTune suggests for this project, with the evidence behind each. ``` ```text Accept the first action, generate its brief and show me the brief. ``` ```text Mark that action live. The page is published at https://example.com/your-page. ``` 1. `devtune_get_actions` lists the queue with its evidence. 2. `devtune_change_action_status` accepts an action, and `devtune_generate_action_brief` writes its brief. Generating a brief spends credits. 3. ChatGPT reads the brief with `devtune_get_action_brief`. Writing and publishing the page is your work and the agent's, in your own repository or content system. DevTune drafts and never publishes. 4. `devtune_change_action_status` with `mark_live` and the published URL starts the before/after measurement. ## Prove ```text Which of our shipped actions have results, and what moved? ``` `devtune_get_outcomes_ledger` returns each measured action as improved, mixed, no clear change, declined, still measuring or unmeasured. Results show what moved after a fix shipped, not what caused it. Results windows are 7, 30, 90 or 365 days. ## What needs your approval - Reading never changes your project or spends credits. - Accepting an action, changing prompts or competitors, and every other change acts as you. Have the agent say what it will change before it does. - Briefs, drafts, managed-agent runs, Agent Picks tests and prompt-set analysis spend credits. Approve the spend before the agent starts one. - DevTune steers suggestions around locked pages and says when it did. ## How ChatGPT runs DevTune tools ChatGPT asks you to confirm each DevTune tool that changes something. You can expand a tool call to read exactly what it will send before you approve, and ChatGPT can remember your choice for a tool for the rest of that conversation. A new conversation asks again. In the ChatGPT desktop app, install the DevTune plugin through Codex instead. See [Use DevTune with Codex](https://devtune.ai/integrations/codex). ## Limits - ChatGPT offers sign-in or no authentication for a custom server, so a DevTune API key cannot be used here. - A connection reaches one project. Connect again, or use another key, for a second project. - Tools your connection has no scope for do not appear in the agent. A connection never gains scopes added later. Edit the key, or disconnect and sign in again. ## If something goes wrong | Symptom | What to do | | -------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | ChatGPT lists no DevTune tools | Check the connection as described above. With an API key, confirm the key is active under **API Keys** and has not expired. | | A tool is missing, or a call is refused with `403` | The connection lacks that tool's scope, or the plan lacks the feature. Ask the agent which scopes the connection has, then edit the key or sign in again with the scope selected. | | Changes are refused but reads work | The connection has read scopes only, or the project is paused. Add the scope to the key or sign in again with it selected; resume a paused project in DevTune. | | A figure comes back empty or as `Unmeasured` | DevTune has no measurement for that window. Report it as unmeasured, not as zero. | ## Next steps - [ChatGPT documentation](https://developers.openai.com/api/docs/guides/developer-mode): how OpenAI documents connecting outside tools - [MCP server](https://docs.devtune.ai/api-reference/mcp-server): every tool, its inputs and its scope - [Code mode](https://docs.devtune.ai/api-reference/mcp-server#code-mode): two tools in place of the full list, for agents short on context - [API authentication](https://docs.devtune.ai/api-reference/authentication): keys and scopes - [Use DevTune with your agent](https://devtune.ai/integrations): setup guides for other agents