AgentTune

MCP serverFiles & storage

agenttune gives your AI a new personality by applying one of 43 ready-made tunings. Each tuning is a small file that shapes how the AI talks and responds, and five built-in personality tests let you check the results. All tunings are MIT-licensed.

Use AgentTune in Claude, ChatGPT or Ahel Desktop

Free. Sign in, add AgentTune and connect your AI. About a minute.

Also: Claude Code · Cursor · Codex

Then ask your AI: use AgentTune to get free tools

Details

Available today. Use it from your connected AI after setup.

After adding it, pick a tuning, apply it to your AI, and run the included personality tests to see the difference. Try a few tunings to find the tone that fits.

AgentTuneStart free

What your AI can do with it

  • Apply one of 43 personality tunings to change how the AI responds
  • Run five built-in personality tests to see how the AI behaves
  • Swap between tunings to compare different styles
  • Keep tunings as files you can revisit and reuse
  • Use MIT-licensed tunings in your own projects

Install AgentTune

The server’s own address, for the clients that take one directly. Or connect Ahel once and every client you use reads it from one address, with the account kept on Ahel rather than in each client’s config.

  • Claude Code

    claude mcp add --transport http --scope user agenttune 'https://agent-tune.com/mcp'

    Run it once in your project, then open /mcp to approve any sign-in the server asks for.

  • Claude Desktop

    https://agent-tune.com/mcp

    Add a custom connector in Settings, paste this address, and approve the sign-in.

  • Cursor

    cursor://anysphere.cursor-deeplink/mcp/install?name=agenttune&config=eyJ1cmwiOiJodHRwczovL2FnZW50LXR1bmUuY29tL21jcCJ9

    Open the link and Cursor adds the server at that address.

  • ChatGPT

    https://agent-tune.com/mcp

    In Settings, enable Developer mode, create an MCP app, and paste this address. Your plan and workspace must allow custom apps.

  • Codex

    codex mcp add agenttune --url 'https://agent-tune.com/mcp'

    Run it once, then sign in with codex mcp login agenttune if the server asks for an account.

From the project's README

As published by bernardjhuang/agenttune in README.md.

Editable communication preferences for AI assistants. Browse 43 templates, choose the rules that fit, and review them before adding them to your instructions. A personality label is optional; templates are editorial suggestions, not diagnoses or proven performance improvements.

Website · Preference builder · Library · Research

Start with the behavior you want

  1. Describe your preferred level of detail, tone, structure and pushback in the preference builder, or browse a template below.
  2. Read and edit the actual rules. Your current request and explicit preferences take precedence. No questionnaire framework automatically outranks another.
  3. Add only the reviewed text to the intended conversation, account settings or project instructions. Preserve existing content; use a clearly marked block when editing a shared file.
  4. Reopen the destination to verify storage. Compare several new tasks to assess behavior; saved text alone does not prove that a model will follow it.
  5. To undo, remove only the added block. Do not delete an existing shared instruction file.

Reading a resource does not authorize installation, an external action or a lasting change to preferences. Templates must preserve accuracy, material uncertainty and authorized scope.

Browse templates

Combine only rules you want. When two rules conflict, choose explicitly rather than treating a score or framework as an instruction priority. The framework labels are navigation aids, not claims about every person who uses a label.

Optional questionnaires

The current release includes five interactive questionnaire adaptations: MBTI-style, Enneagram, DISC, attachment and IPIP Big Five. The Big Five adaptation returns raw dimension totals and item means. It does not return population percentiles or select instructions automatically. Review the availability and rights record for other instruments. All five questionnaires are available. Their source terms remain separate; availability does not establish unrestricted reuse rights.

See third-party notices before reusing instrument material. Original AgentTune code and preference templates are MIT licensed; that does not make every third-party instrument MIT or commercially reusable.

Versioned content and local scoring

This repository owns the canonical content. The website consumes a pinned release, not a runtime fetch from main. dist/manifest.json gives the release version and SHA-256 of every exported artifact. dist/instruments.json identifies the available definitions, item IDs, response anchors and definition hashes. Every scoring result identifies its instrument and scorer version.

const { score, scoreOrdered } = require('./dist/score.js');
const instrument = require('./dist/instruments.json').find(d => d.route === 'big-five');
const result = score({
  instrumentId: instrument.id,
  instrumentVersion: instrument.version,
  responses: instrument.items.map(item => ({ itemId: item.id, value: 3 }))
});
// result.status === 'complete'; all totals 30 and all item means 3.
// scoreOrdered(id, version, answers) requires the exact complete item order.

Valid partial responses return incomplete, with missing item IDs and no final score. Duplicate/unknown IDs, noninteger/out-of-range values and malformed responses return invalid. Missing answers are never silently imputed. Raw scores are separate from a user's subsequent choice of communication preferences. Keep personal responses local and out of public pull requests.

Browser: load dist/score.js to use AgentTuneScoring. It contains scoring keys for the approved instrument without embedding question wording. The original generic engine is also available separately as dist/engine.js; users are responsible for rights to any definitions they register.

Agent access

The site exposes body-only Markdown at /resources/tunings/<system>/<slug>.md, metadata-rich mirrors via the tuning catalog, and a versioned content manifest. Apply only the body; metadata is for discovery and verification.

The stateless MCP endpoint is https://agent-tune.com/mcp. Its tools are list_tunings, get_tuning, get_test_spec, list_resources, get_resource and get_free_tools. Questionnaire availability is explicit; an unavailable specification must not be treated as an instruction to administer an old questionnaire. MCP retrieves public resources and does not need your questionnaire answers.

Use the installation protocol and platform registry for current destinations. Metadata separates verify.saved_text from verify.behavior; there is no universal compliance probe.

Development and research provenance

Run npm run build and npm test with Node 22 or later. No dependency installation is needed. Edit data/tunings.json, data/contract.md and approved definitions in data/instruments/; do not edit generated copies. npm run check also detects stale generated artifacts. License eligibility, instrument IDs, fixture scores and export parity are release gates.

See the changelog and legacy provenance. Historical questionnaires contained adaptations and undocumented substitutions. Their responses must remain attached to their actual versions. Correcting future instruments does not retroactively correct previous observations. Research about model questionnaire responses is distinct from evidence that a tuning improves task performance.

License

MIT for original AgentTune work, with the third-party exceptions and availability policy. Review the per-instrument terms and provenance before redistribution.

Tools it offers (6)

What this server listed when Ahel dialed its public endpoint in Oct 2026, with no key and no account of yours. The names are the server’s own.

  • get_free_tools
  • list_tunings
  • get_tuning
  • get_test_spec
  • list_resources
  • get_resource

Signals

Last commit
Sep 2026
Advanced
Delivery
agenttune MCP server → your Ahel connector (mcp.ahel.ai) → your AI.
Item type
mcp-server
Key
com-agent-tune-agenttune
Source
github.com/bernardjhuang/agenttune
Hosted endpoint
https://agent-tune.com/mcp