# io.github.MukundaKatta/agentcast (npm · @mukundakatta/agentcast-mcp)

Structured-output enforcer: extract and validate JSON from messy LLM text.

- Trust score: 68/100 (medium)
- Change this week: +22
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `@mukundakatta/agentcast-mcp`: 68/100 (this document), [markdown](https://verifymcp.io/servers/mukundakatta-agentcast/mukundakatta-agentcast-mcp.md), [page](https://verifymcp.io/servers/mukundakatta-agentcast/mukundakatta-agentcast-mcp)

## Channel facts

- Registry: `npm`
- Package: `@mukundakatta/agentcast-mcp`
- Version: `0.1.0`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Supply Chain Security**: 87/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree.
  - No install/post-install scripts declared.
  - Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 98 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 71/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 310 tokens (~103/item across 3 items; 3 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add mukundakatta-agentcast -- npx -y @mukundakatta/agentcast-mcp
```

### Codex

```bash
codex mcp add mukundakatta-agentcast -- npx -y @mukundakatta/agentcast-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mukundakatta-agentcast": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@mukundakatta/agentcast-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add mukundakatta-agentcast --command npx --arg -y --arg @mukundakatta/agentcast-mcp
```

### Hermes

```yaml
mcp_servers:
  mukundakatta-agentcast:
    command: "npx"
    args: ["-y", "@mukundakatta/agentcast-mcp"]
```

### Other

```json
{
  "mcpServers": {
    "mukundakatta-agentcast": {
      "command": "npx",
      "args": [
        "-y",
        "@mukundakatta/agentcast-mcp"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-02 (score 68, +47)

- [security regression] Provenance: unverified → fail
- [security improvement] Known CVEs: unverified → partial
- [security improvement] Install scripts: unverified → pass
- [security improvement] Malware scan: unverified → pass
- [functional regression] Security disclosure: fail → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional improvement] License: unverified → pass
- [functional improvement] Stability: unverified → 0.23
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] Schema quality: unverified → good
- [functional] Licence: MIT

### 2026-07-31 (score 21, −7)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 28, +4)

- [security regression] Malware scan: pass → unverified
- [functional improvement] Tool coverage: unverified → 100

### 2026-07-28 (score 24, −22)

- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified

### 2026-07-27 (score 46)

First indexed and scored.

## MCP tools (3)

### `extract_json` (~71 tokens)

Pull a JSON value out of messy LLM output. Tries the whole text, then a fenced ```json``` block, then the largest balanced {...}/[...] substring. Returns the parsed value plus which strategy succeeded.

Input parameters:

- `text` (string, required): Free-form text from an LLM that may contain JSON anywhere inside.

### `validate_response` (~139 tokens)

Validate a parsed JSON value against an agentcast shape spec. Spec maps field name to type: 'string', 'number', 'boolean', 'array', 'object'. Suffix with '?' for optional. Returns valid=true on success, or valid=false with a human-readable error string suitable for retry feedback.

Input parameters:

- `shape` (object, required): Shape spec: { fieldName: 'string' | 'number' | 'boolean' | 'array' | 'object', ... }. Append '?' for optional fields, e.g. { name: 'string', age: 'number?' }.
- `value` (required): The parsed JSON value to validate (any shape).

### `build_retry_prompt` (~100 tokens)

Given an attempt history, produce the retry feedback message agentcast would append to the conversation when the model returned the wrong shape. Codifies the "validation error as feedback" pattern for non-Node MCP clients.

Input parameters:

- `attempts` (array, required): List of prior attempts. Each item should have the assistant text plus either a parsed value or an error string.
- `expected_shape` (object): Optional agentcast shape spec to include in the feedback for extra grounding.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/mukundakatta-agentcast/mukundakatta-agentcast-mcp#diagnostics

## Score history

- 2026-08-03: 68
- 2026-08-02: 68
- 2026-08-01: 21
- 2026-07-31: 21
- 2026-07-30: 28
- 2026-07-28: 24
- 2026-07-27: 46

## Links

- npm package: https://www.npmjs.com/package/@mukundakatta/agentcast-mcp
- Socket report: https://socket.dev/npm/package/@mukundakatta/agentcast-mcp
- Repository: https://github.com/MukundaKatta/agentcast-mcp
- Changelog RSS feed: https://verifymcp.io/servers/mukundakatta-agentcast/mukundakatta-agentcast-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/mukundakatta-agentcast/mukundakatta-agentcast-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/mukundakatta-agentcast/mukundakatta-agentcast-mcp