The directories are filling up
Node8's August 2026 census counted 1,253 Claude connectors and 2,305 ChatGPT listings. Only 392 of 3,150 products were on both.
Source: Third-party census: Node8, August 2026
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Agent distribution engineering for B2B SaaS
Invokary turns your existing API into an MCP connector built to Anthropic's and OpenAI's review rules, submits it from your own accounts, and measures usage after launch. Fixed price. Your code, your domain.
Where you and two competitors stand in Claude, ChatGPT, Cursor and the MCP Registry, with 3 quick wins. A private page in 2 business days. No call needed.
Our own MCP server is listed in Claude's Connectors Directory, ChatGPT's Plugins Directory and the official MCP Registry.See how we built it
We build and submit for: Claude Connectors Directory · ChatGPT Plugins Directory · Cursor Marketplace · Official MCP Registry.
Invokary is an independent studio. We are not affiliated with or endorsed by Anthropic, OpenAI or Anysphere.
Node8's August 2026 census counted 1,253 Claude connectors and 2,305 ChatGPT listings. Only 392 of 3,150 products were on both.
Source: Third-party census: Node8, August 2026
Last verified
MCP 2026-07-28 removed sessions and the initialize handshake, made servers implement server/discover, and deprecated Dynamic Client Registration in favor of Client ID Metadata Documents. DCR still works for backward compatibility, for now. Servers built last year need work.
Source: MCP blog, July 28, 2026: The 2026-07-28 specification
Source: MCP specification 2026-07-28: Key changes
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Agents choose tools from names, descriptions and annotations. Claude now shows plugin publishers installs, listing views and the searches that lead to them. You can finally measure whether you are chosen.
Source: Anthropic, September 25, 2026
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01
A live public listing on every surface you contract, published from your organization.
Measured by listing URLs and tier (Community or Verified).
02
Every tool succeeds on valid input and auth works first time.
Measured by eval pass rate of 90% or more, tool error rate under 2%, uptime of 99.5% or more.
03
The agent picks the right tool, and people find your listing.
Measured by tool-selection accuracy of 85% or more, plus listing views and search queries where the platform reports them.
04
Adoption rises month over month.
Measured by installs by surface and version, weekly tool calls and connected accounts over 90 days.
01API
We start from the API you already have, and from your OpenAPI spec if there is one.
02Tool design
8 to 20 tools shaped around real jobs, each with a title, read-only and destructive hints, and a description written for the model.
03MCP server
A remote MCP server on the 2026-07-28 spec, in your repo and on your domain.
04OAuth
OAuth 2.1 with Client ID Metadata Documents, plus a Dynamic Client Registration fallback.
05Evals
Five positive and three negative prompts per platform, run in CI.
06Submission
A submission package for each platform, submitted from your accounts.
07Discovery
Listings in the directories you choose, with names and descriptions that help agents pick your tools.
08Usage
Installs by surface and version, weekly tool calls and connected accounts after launch.
Built on the current MCP spec (2026-07-28), with OAuth 2.1 and Client ID Metadata Documents, evals in CI and code in your repo.
You can, and for an internal tool you should. A listed connector is a different job: each platform reviews it against its own rules, real customers sign in through OAuth, and a model has to pick your tools from everything in its context. An AI coding assistant can write a working server. The rest is what we sell: choosing 8 to 20 job-shaped tools, auth that passes review, evals that show the right tool gets picked, submission from your accounts, and fixes when reviewers or the spec change. For example, OpenAI's reviewers need test accounts that work without MFA, and projects with EU data residency can't submit plugins.
| In-house with AI coding tools | OpenAPI-to-MCP generator | Freelance MCP developer | Invokary | |
|---|---|---|---|---|
| Best when | Internal tools, or you have MCP and review experience in-house | You want a quick server from an existing spec | You have a defined spec and will run review yourself | You want a reviewed, listed connector at a fixed price |
| Tool design | You decide | Mirrors your endpoints by default | Depends on the developer | 8 to 20 job-shaped tools with annotations, approved by you |
| Auth that passes review | You design and test it | Varies by product | Depends on the contract | OAuth 2.1 with Client ID Metadata Documents, DCR fallback |
| Evals | You build them | Varies by product | Depends on the contract | In CI: 5 positive and 3 negative prompts per platform |
| Submission and review responses | Your team | Your team | Depends on the contract | From your accounts; 2 rejection cycles included |
| After launch | Your team | Your team | Depends on the contract | 30 days of monitoring, then Care or a handover |
| Price certainty | Engineering time | Tool pricing | Hourly or fixed | Fixed price, published acceptance criteria |

Full stack AI engineer who founded two AI products, Clauseium and ApplyForge, and builds LLM features for Ascendo AI, a client.
Who you work withOur first five Launch Sprints are $7,500 instead of $9,500, in exchange for a public case study with your approval.
Our own MCP server: six read-only tools with full annotations, checked in CI against the ChatGPT submission's test cases, and listed in Claude's Connectors Directory, ChatGPT's Plugins Directory and the official MCP Registry.
View reference work$750
5 business days
Your directory presence, competitor map, tool map, auth plan and a fixed quote. Credited to your build.
From $9,500 ($7,500 founding)
3 to 4 weeks plus platform review
A remote MCP server in your repo, OAuth, evals in CI, and submissions to the platforms you choose.
$2,500 to $5,000
1 to 2 weeks
Move to 2026-07-28, add Client ID Metadata Documents, fix annotations, respond to a rejection.
$1,500 to $3,000
1 week
Threat model, scope matrix and a reviewer-ready security statement.
From $750 per month
3-month minimum
Monitoring, monthly evals and spec and policy watch, with a Listed, Working, Chosen, Growing scorecard.
Answer seven quick questions about your API, auth and platforms, starting with three here. You get a scope, timeline and price band. It is an estimate, and the Audit turns it into a fixed quote.
Day 0
15-minute fit call with Mohd. Ashhar. We tell you on the call if you are not a fit.
Within 1 business day
We send the invoice. The Audit starts when payment clears.
Days 1 to 5
Audit. You get a written report and a fixed quote.
Weeks 1 to 4
Build. You get weekly demos, and code lands in your repo from day one.
Submission
We prepare everything and submit from your accounts. Review time is set by each platform, and we respond to feedback within 2 business days.
Launch and 30 days
You publish. We watch errors and usage, then hand over or move to Care.
Claude Connectors Directory
Single MCP connector or GitHub-hosted plugin bundle, automated safety scan, connectors listed as Community by default, usage analytics after launch.
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ChatGPT Plugins Directory
Domain verification token, verified identity, five positive and three negative test cases, tool annotations, release notes and a demo recording.
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Cursor Marketplace
Public Git repository with a plugin manifest, manual review, permissive licenses for open-source components.
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Official MCP Registry
A server.json listing your public endpoint, under a namespace you authenticate. The registry is in preview.
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No. Anthropic, OpenAI and Cursor decide. We build to their published requirements, fix what reviewers flag, and include two rejection cycles.
You do, on payment. It lives in your repository from the first commit.
No. It runs on your infrastructure or your Cloudflare, Vercel or AWS account.
An engineering contact for about 2 hours a week, OAuth admin access, a reviewer test account with realistic data, DNS access and a Claude Pro, Max, Team or Enterprise plan (on Team and Enterprise, an Owner submits).
We audit it, migrate it to 2026-07-28 and fix what blocks listing. That is the Upgrade.
Generators mirror endpoints. Reviewers and models reward a small set of well-described tools with correct annotations and real auth. See how the options compare.
We are an engineering studio based in India, working with SaaS teams in the US, UK and EU. We work 09:00 to 18:00 IST, which covers UK and EU mornings. For US teams we hold calls early morning Eastern time, or later by arrangement. We reply within 1 business day.
By invoice in USD, paid by bank transfer. The Audit is paid upfront; a Launch Sprint is half at kickoff and half at submission.