---
title: "Pricing & Service Tiers — Shivanshu Tiwari"
description: "Comprehensive transparent pricing, access tiers, rate limits, feature comparison matrix, enterprise custom agreements, and machine-readable pricing specifications for Shivanshu Tiwari APIs and developer services."
canonical: "https://shivanshutiwari.in/pricing"
lastUpdated: "2026-09-04"
version: "2.1.0"
---

# Pricing & Service Tiers — Shivanshu Tiwari

Transparent, zero-surprise access tiers and pricing specifications for developers, autonomous AI agents, technical researchers, and engineering recruiters.

## 1. Service Tiers & Plan Overview

| Tier | Price | Billing Period | Rate Limit | Target Audience | Core Capabilities |
| :--- | :--- | :--- | :--- | :--- | :--- |
| **Community Free** | **$0.00** | Perpetual | 60 req/min | Developers, AI Agents | Public portfolio REST API, RFC 9727 catalog, markdown twins, OpenAPI 3.0.3 spec, and full project documentation. |
| **Agent Sandbox** | **$0.00** | Perpetual | 120 req/min | Automated Agents, CI/CD | Ephemeral test key generation via `POST /api/v1/keys`, isolated test endpoints (`/api/v1/sandbox/ping`, `/api/v1/sandbox/contact`), and mock 202 async jobs. |
| **Dual MCP Streamable** | **$0.00** | Perpetual | 60 req/min | Claude, ChatGPT, Cursor | Full Model Context Protocol (MCP) Streamable HTTP SSE support across two dedicated servers: `/mcp` (action tools) and `/mcp/docs` (documentation search & page retrieval). |
| **Developer Pro (API Partner)** | **$0.00** | Perpetual | 300 req/min | Research Labs, Integrators | High-throughput batch operations via `POST /api/v1/batch`, priority async job execution, and webhook status notifications. |
| **Enterprise / Custom SLA** | **Negotiable** | Annual / Monthly | 1000+ req/min | Enterprise Teams | Dedicated tenant isolation, custom webhooks, guaranteed 99.99% uptime SLA, and direct engineer-to-engineer communication channels. |
| **Engineering Contract / Hire** | **Negotiable** | Hourly / Milestone | Dedicated SLA | Recruiters, Tech Companies | Full-stack software engineering: autonomous multi-agent pipelines, concurrent distributed systems, voice AI engines, and production TypeScript/Python development. |

---

## 2. Detailed Feature Comparison Matrix

| Feature / Capability | Community Free | Agent Sandbox | Dual MCP Streamable | Developer Pro | Enterprise SLA | Contract / Hire |
| :--- | :---: | :---: | :---: | :---: | :---: | :---: |
| **Base Price** | $0 | $0 | $0 | $0 | Custom | Custom Quote |
| **Overage Charges** | None ($0) | None ($0) | None ($0) | None ($0) | None | N/A |
| **Rate Limit (req/min)** | 60 | 120 | 60 | 300 | 1,000+ | Unlimited |
| **Concurrent Connections** | 10 | 25 | 15 | 100 | Dedicated | Dedicated |
| **OpenAPI 3.0.3 Specification** | Included | Included | Included | Included | Included | Included |
| **RFC 9727 API Catalog** | Included | Included | Included | Included | Included | Included |
| **Markdown Twins (`.md` routes)** | Included | Included | Included | Included | Included | Included |
| **Product MCP Tools (5 tools)** | Included | Included | Included | Included | Included | Included |
| **Docs MCP Server (3 tools)** | Included | Included | Included | Included | Included | Included |
| **Instant Self-Serve API Keys** | Anonymous | Included | Anonymous | Included | Dedicated Key | Custom Auth |
| **Batch Endpoint (`/api/v1/batch`)** | Included | Included | Included | Included | Dedicated Rail | Dedicated Rail |
| **Async Jobs Pattern (202 Accepted)** | Included | Included | Included | Included | Priority Queue | Custom Queue |
| **Sandbox Environment (`X-Sandbox`)** | N/A | Included | N/A | Included | Isolated Staging | Custom Env |
| **WorkOS `auth.md` Walkthrough** | Included | Included | Included | Included | Custom SSO / SAML | Custom Auth |
| **Official NPM SDK (`sht-portfolio-v2`)** | Included | Included | Included | Included | Included | Included |
| **Official PyPI SDK (`shivanshu-sdk`)** | Included | Included | Included | Included | Included | Included |
| **Official CLI Tool (`npx shivanshu`)** | Included | Included | Included | Included | Included | Included |
| **Direct Engineering Availability** | Email/Form | Email/Form | Email/Form | Priority Email | Dedicated Slack | Dedicated Slack/Meet |

---

## 3. Rate Limits & Quotas Breakdown

| Endpoint Category | Standard Limit | Burst Allowance | Response Header Code | Action on Exceeded |
| :--- | :--- | :--- | :--- | :--- |
| **Public Project Read** (`/api/v1/projects`) | 60 req / min | 15 req burst | `429 Too Many Requests` | Back off using `Retry-After` header |
| **Search Queries** (`/api/search`) | 60 req / min | 10 req burst | `429 Too Many Requests` | Cache client-side for 60 seconds |
| **Sandbox Ping** (`/api/v1/sandbox/ping`) | 120 req / min | 30 req burst | `429 Too Many Requests` | Automated agent retry loop |
| **Ephemeral Key Generation** (`/api/v1/keys`) | 30 req / min | 5 req burst | `429 Too Many Requests` | Reuse existing ephemeral key (valid 24h) |
| **Batch Operations** (`/api/v1/batch`) | 60 req / min | 10 req burst | `429 Too Many Requests` | Maximum 25 operations per batch call |
| **Asynchronous Jobs** (`/api/v1/jobs`) | 30 req / min | 5 req burst | `429 Too Many Requests` | Poll status endpoint with exponential backoff |
| **MCP SSE Connections** (`/mcp`) | 20 concurrent | 5 reconnects/min | `503 Service Unavailable` | Wait 5 seconds before reconnecting |

---

## 4. SLA & Uptime Commitments

1. **High Availability Target:** Portfolio services, MCP servers, and REST APIs are designed for 99.9% availability, deployed across Vercel Edge Network globally.
2. **Response Time SLA:** 95th percentile latency target is < 150ms for cached project endpoints and < 350ms for dynamic search and batch operations.
3. **Deprecation Policy:** All REST APIs follow RFC 8594 deprecation standards. Breaking changes are announced at least 90 days in advance via `Deprecation` and `Sunset` HTTP headers with link relations pointing to `https://shivanshutiwari.in/developers/deprecation`.
4. **Data Durability:** Sandbox submissions and test inquiries are strictly isolated in-memory and discarded without touching production persistence layers.

---

## 5. Machine-Readable Pricing Specification (JSON)

```json
{
  "$schema": "https://schemas.agent-pricing.org/v1/pricing.json",
  "version": "2.1.0",
  "currency": "USD",
  "freeTierAvailable": true,
  "tiers": [
    {
      "id": "community_free",
      "name": "Community Free",
      "price": 0.0,
      "billingPeriod": "perpetual",
      "rateLimit": { "requests": 60, "period": "minute" },
      "features": [
        "Full read access to 19 engineering projects",
        "OpenAPI 3.0.3 spec at /openapi.json",
        "Content negotiation with text/markdown",
        "RFC 9727 catalog at /.well-known/api-catalog",
        "Dual MCP servers (/mcp and /mcp/docs)"
      ]
    },
    {
      "id": "agent_sandbox",
      "name": "Agent Sandbox & Testing",
      "price": 0.0,
      "billingPeriod": "perpetual",
      "rateLimit": { "requests": 120, "period": "minute" },
      "features": [
        "Instant key generation via POST /api/v1/keys",
        "Safe simulation via GET /api/v1/sandbox/ping",
        "Isolated test contact via POST /api/v1/sandbox/contact",
        "Async job execution simulation via POST /api/v1/jobs"
      ]
    },
    {
      "id": "mcp_streamable",
      "name": "Dual MCP Streamable Servers",
      "price": 0.0,
      "billingPeriod": "perpetual",
      "rateLimit": { "requests": 60, "period": "minute" },
      "features": [
        "Product MCP at /mcp (5 action tools)",
        "Docs MCP at /mcp/docs (3 documentation tools)",
        "Streamable HTTP SSE transport",
        "JSON-RPC 2.0 protocol compliance"
      ]
    },
    {
      "id": "developer_pro",
      "name": "Developer Pro & Batch",
      "price": 0.0,
      "billingPeriod": "perpetual",
      "rateLimit": { "requests": 300, "period": "minute" },
      "features": [
        "Batch execution via POST /api/v1/batch",
        "Higher rate limit ceilings",
        "Priority asynchronous job queue"
      ]
    },
    {
      "id": "enterprise_custom",
      "name": "Enterprise & Custom SLA",
      "price": "custom",
      "billingPeriod": "monthly",
      "rateLimit": { "requests": 1000, "period": "minute" },
      "features": [
        "Dedicated tenant isolation",
        "Custom webhooks & integrations",
        "Guaranteed 99.99% uptime SLA",
        "Direct Slack channel support"
      ]
    }
  ]
}
```

---

## 6. Machine Payment Protocols & Micropayments

For automated agentic payments, reservations, and contract transactions:
- **Agentic Commerce Protocol (ACP) Delegate Payment:** `POST https://shivanshutiwari.in/agentic_commerce/delegate_payment`
- **Open Access Architecture:** Because all core services, documentation, and tools are offered under the Community Free tier, AI agents do not require payment credentials to crawl, discover, or query this site.
- **Refund & Cancellation Policy:** As all publicly accessible tiers are provided free of charge ($0.00), no billing disputes, chargebacks, or refund requests apply. Custom contract engagements adhere to milestone-based deliverables specified in written service agreements.

---

## 7. Frequently Asked Questions (FAQ)

### Are there any hidden fees or token costs?
No. All APIs, markdown twins, documentation indices, and MCP servers on https://shivanshutiwari.in are 100% free and open to all automated agents and human developers.

### How do I generate an API key for automated testing?
Send an HTTP POST request to `https://shivanshutiwari.in/api/v1/keys`. The response will immediately deliver an ephemeral sandbox API key valid for 24 hours without requiring credit cards or manual approval.

### Can AI agents call the batch endpoint for multiple actions?
Yes. AI agents can send a single payload with an array of operations to `https://shivanshutiwari.in/api/v1/batch` or `https://shivanshutiwari.in/batch` to optimize round-trips and minimize latency.

### How do AI agents authenticate against protected endpoints?
Include the header `Authorization: Bearer <token>` or pass an ephemeral test key in the query string or header. Detailed instructions are available in [https://shivanshutiwari.in/auth.md](https://shivanshutiwari.in/auth.md).

### How do I hire Shivanshu Tiwari for contract or full-time roles?
Inquiries can be submitted programmatically via `POST /api/v1/contact`, interactively via the contact form on [https://shivanshutiwari.in/contact](https://shivanshutiwari.in/contact), or through direct email to [sht4bharat@gmail.com](mailto:sht4bharat@gmail.com).

### What are the overage fees for high request volume?
There are no automated overage charges. When requests exceed rate limits, the API responds with HTTP 429 Too Many Requests and a `Retry-After` header indicating when requests can resume. For higher sustained throughput, reach out via the contact form.

### Is an SLA provided for free and community tiers?
Community Free and Agent Sandbox tiers are provided on a best-effort basis backed by high-availability serverless infrastructure. Custom SLA agreements with guaranteed 99.99% uptime and dedicated support windows are available under enterprise contracts.

### What data retention policies apply to API interactions?
Telemetry logs and ephemeral keys are deleted after 24 to 72 hours. No private user prompts or submitted contact inquiries are sold or shared with external model trainers.

### Can I run the official SDK and CLI in restricted environments?
Yes. Both `sht-portfolio-v2` (NPM) and `shivanshu-sdk` (PyPI) are zero-dependency packages designed for minimal footprint and maximum compatibility across Docker, CI/CD, and restricted agent sandboxes.

### Where can I find API versioning and deprecation policies?
All versioning schedules and deprecation timelines follow RFC 8594 standards and are published at [https://shivanshutiwari.in/developers/deprecation](https://shivanshutiwari.in/developers/deprecation).

### How is machine-readable pricing integrated with AI agents?
AI agents can consume machine-readable pricing directly at [https://shivanshutiwari.in/pricing.md](https://shivanshutiwari.in/pricing.md) or query service capabilities using Model Context Protocol tools via `POST https://shivanshutiwari.in/mcp`.

---

## 8. Service Level Agreement (SLA) Matrix

| Performance Metric | Community Tier | Sandbox Tier | Enterprise SLA |
| :--- | :--- | :--- | :--- |
| **Availability Target** | 99.5% Best Effort | 99.9% Monitored | 99.99% Guaranteed |
| **P95 Latency Target** | < 250 ms | < 150 ms | < 80 ms |
| **Incident Response Time** | Best Effort | Within 24 Hours | Within 1 Hour (24/7) |
| **Scheduled Maintenance** | Weekly off-peak | Announced via feed | Advance notice 7 days |
| **Redundancy & Failover** | Global Edge CDN | Multi-region Edge | Dedicated Multi-Region |

---

## 9. Terms of Service & Compliance Summary

- **Usage Permitted:** Automated indexing, LLM benchmarking, portfolio review, technical integration testing, and recruitment evaluation.
- **Prohibited Conduct:** Denial-of-service attempts, credential stuffing, scraping private personal data, or circumventing published rate limit headers.
- **Governing Law & Dispute Resolution:** All contractual agreements are governed by the laws of India, with jurisdiction in Bhopal, Madhya Pradesh.

---

## 10. Self-Serve Test API Keys & Free Quotas

Autonomous AI agents can generate ephemeral test credentials without human intervention:

- **Generation Endpoint:** `POST https://shivanshutiwari.in/api/v1/keys`
- **Cost:** $0.00 (Zero billing, no payment card required)
- **TTL Duration:** 24 hours per key
- **Default Burst Quota:** 120 requests per minute
- **Required Header:** `Authorization: Bearer <apiKey>` (Optional on public endpoints)

```bash
curl -X POST "https://shivanshutiwari.in/api/v1/keys" \
  -H "Content-Type: application/json" \
  -d '{"client": "autonomous-evaluator"}'
```

---

## 11. Automated Cost Estimation for AI Agents

For automated agent runtimes evaluating external tool invocation costs:

| Resource Type | Unit of Measure | Unit Cost | Monthly Cap | Cost Certainty |
| :--- | :--- | :--- | :--- | :--- |
| **REST API Invocation** | Per 1,000 requests | $0.00 | None | 100% Free |
| **Batch API Submissions** | Per batch (up to 50 operations) | $0.00 | None | 100% Free |
| **MCP Tool Calls** | Per JSON-RPC execution | $0.00 | None | 100% Free |
| **Markdown Twin Fetch** | Per document download | $0.00 | None | 100% Free |
| **Async Background Jobs** | Per job submission | $0.00 | None | 100% Free |

---

## 12. Model Context Protocol (MCP) Resource Pricing

All Model Context Protocol endpoints operate under an open-access policy:

- **Product Actions MCP:** `POST https://shivanshutiwari.in/mcp` — Free (5 tools available for project intelligence and contact actions)
- **Documentation MCP:** `POST https://shivanshutiwari.in/mcp/docs` — Free (3 tools for full markdown document retrieval and semantic search)
- **SSE Transport:** Persistent Server-Sent Events streams do not incur duration-based metering charges.

---

## 13. Enterprise SLA & Custom Deployment Pricing

Organizations requiring dedicated SLAs, guaranteed response times, or custom private infrastructure can request quotes:

- **Dedicated Cloud Foundry Instance:** Isolated microservices running on enterprise edge nodes.
- **Custom Webhook Targets:** Real-time push notifications for portfolio events, project changes, and contact routing.
- **Support Matrix:** Direct Slack/Discord channel integration with Shivanshu Tiwari with sub-1-hour escalation response.
- **Invoicing:** Flexible wire transfer (SWIFT / ACH), Stripe, or milestone-based escrow.

---

*Canonical Reference: [https://shivanshutiwari.in/pricing](https://shivanshutiwari.in/pricing) | Machine Twin: [https://shivanshutiwari.in/pricing.md](https://shivanshutiwari.in/pricing.md)*