Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Insurance pricing: build, validate and test rating models, then price quotes from your AI client.
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
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Works in Claude on the web, desktop and mobile:
https://app.ptally.ai/mcpRun this in your terminal
claude mcp add --transport http ptally https://app.ptally.ai/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"ptally": {
"url": "https://app.ptally.ai/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Paste into .vscode/mcp.json in your project
{
"servers": {
"ptally": {
"type": "http",
"url": "https://app.ptally.ai/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
https://app.ptally.ai/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.
get_docsFetch Ptally documentation by topic. Call BEFORE building or editing a config to load the rules and reference material you need. Topics: "rules" = agent rules, constraints, expression syntax, quality gates, and debugging guidance (start here); "readme" = full engine reference wit
get_schemaFetch the full JSON schema for Ptally project config files. Use to check exact field requirements, allowed step types, and property constraints.
validate_projectServer-side schema validation of a project config. Returns { valid: true/false, errors: [...] } with the JSON path, keyword, and message for each issue. Prefer local validation against get_schema during authoring; use this as a ground-truth check, including on an amended model be
get_starterFetch a worked-example Ptally project for a common line of business. Each example is a small, fully valid project with realistic collection tables, calculations, exclusions and refers, plus an embedded tests[] suite for reference. Use as a template — copy and adapt rather than au
get_projectsList every project stored on this self-host instance. Returns `{ count, projects: [{ project_reference, name, description }] }`. Descriptions are truncated to 100 characters so the response stays compact — call get_project for the full record. Archived projects are excluded.
get_projectFetch a project by `project_reference` from the self-host store. Optional `version_reference` pins to a specific version of that project (a version from another project is a tool error); otherwise the latest live (published or approved) version is used, or the latest non-archived
run_quoteDry-run a quote against a stored project. Takes `project_reference`, an optional `version_reference` (defaults to the latest live version; there is no fallback to drafts, so pass `version_reference` to price one — it must belong to the project and not be archived, else a tool err
run_version_testsPrice every test in a version's tests[] against that version's stored model and compare each with its expected output. Takes `version_reference` (any status but archived — a draft after patch_version, or a live version for a baseline). Runs against the stored model, so a patch sa
patch_versionChange a DRAFT version's stored model with an RFC 6902 JSON Patch, merged on the server. Use it for targeted edits; any change to a clipped collection (__context.patchable: false) goes through download and upload instead (see next_steps in get_project). BEFORE CALLING 1. The vers
get_healthDiagnostic snapshot of the deployed MCP server plus a live probe of its store (sqlite or Postgres). Returns server name and version, protocol version, root, boot time, advertised tool names and count, a hash of the tool surface, and `store` — `{ ok, latency_ms, counts: { projects
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026
The registry lists no source repo, so we cannot match the publisher (ptally.ai) to the code
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Responded in 495 ms (HTTP 200)
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Read 10 tool descriptions and found no hidden instructions to the AI
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 2 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
The registry does not list a required key, though some servers ask you to sign in on first use.
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 2 days ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
In the same category: Spec Driven Development, Remote Desktop Commander, Safe Fetch
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
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No README found in the repo