Elva vs Tucky: Features, Pricing & Which Is Better (2026)

A side-by-side comparison of Elva and Tucky — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.

Elva

Theneo

Freemium

Reads your repositories to discover every API, scores and governs them, then exposes them to developers and AI agents via hosted MCP servers.

Spec-Free API Discovery: Elva scans repository code directly to find endpoints and generates OpenAPI 3.1 as output, so no existing spec is needed to start.
Endpoint Scoring: Every collection is graded on design, developer experience, AI readiness, security and performance, with the weakest collection surfaced first.
AI Fix Pass: A one-click agent writes missing descriptions from code, types response schemas and documents auth, then rescores the collection.
API Contracts: Per-audience contracts pin the exact endpoints and fields a partner, internal team, public developer or MCP client receives, excluding PII and internal fields.
Breaking Change Enforcement: Each commit is diffed against published contracts, showing the schema diff, affected consumers and tools, and blocking publish by policy.
Hosted MCP Servers: Contracts generate MCP servers hosted behind Elva's gateway with OAuth2, scoped keys, per-tool authorization and exportable call logs.
MCP Playground and Agent Feedback: Test the server with a live model, then read the complaints agents file about confusing or failing tools, scored back into the catalog.
Multi-Target Publishing: One approved contract ships as OpenAPI spec, Theneo docs, MCP server, Postman collection and a typed TypeScript SDK in sync.

API Inventory Audit: Discover undocumented or forgotten endpoints across a large codebase and get a ranked list of what to fix first.
Agent Enablement: Expose an internal service to Claude, Cursor or ChatGPT as a governed MCP server instead of hand-writing tool wrappers.
Partner Integration Safety: Publish a restricted contract to an external partner and have Elva block commits that would break their integration.
PII Scoping: Keep customer emails and internal ops annotations out of a public or agent-facing surface while the same endpoints serve them internally.
Zombie Endpoint Retirement: Prove no active consumer references an endpoint before deleting it, using contract and call-log evidence.
Enterprise Security Review: Satisfy SOC 2, ISO 27001 and GDPR questions and wire agent access into an existing SSO and SCIM identity provider.
Documentation Drift Control: Keep docs, SDKs and Postman collections regenerated from code on every merge instead of maintained by hand.

coconutStudio

Freemium

A native Mac notes app that docks as a thin stripe on the screen edge, with an encrypted local store and a built-in AI agent.

Edge-Docked Notes: Notes rest as a thin stripe at the screen edge and fan out into readable titles when you reach over, so they never occupy a window until you want them.
Voice Agent from Any App: Holding Option-Space brings a bar to whatever application is in front and lets you talk to your notes, with dictation in over 60 languages.
Ask About This Note: Option-J asks a question about the open note; the title travels with the question and the body is only read after you grant permission.
Bundled Frontier Models: The reasoning models needed for writing, editing and cross-note search ship inside the app, so there are no API keys to configure.
Local Encrypted Storage: Notes are local-only files encrypted on disk and stay on the Mac, with the app clearly scoped to a single machine.
App Connectors: Gmail, Google Calendar, Docs, Sheets, GitHub and Notion can be linked so the agent answers using your calendar and mail alongside your notes.
Note Essentials: Checkbox tasks, live Markdown rendering, global shortcuts, clean exports and self-updating builds in a roughly 15 MB app.

Capturing Notes Mid-Task: Jotting a thought without leaving the current app because the notes are already docked at the screen edge.
Hands-Free Dictation: Speaking a note or a question while working in another application, using the global voice shortcut in any of 60+ languages.
Asking Across Your Notes: Searching and reasoning over an accumulated set of notes without moving them into a cloud service.
Privacy-Sensitive Note Keeping: Keeping journals, client details or personal records in an encrypted local-only file rather than a synced service.
Meeting Prep with Context: Pulling calendar entries and mail through the connectors so the agent can draft or summarize against real appointments.
Lightweight Task Tracking: Using checkbox tasks and live Markdown for daily to-dos in the same place the notes already live.