# aiskills402 Faithful Summary Skill File

> aiskills402 Faithful Summary Skill File is a paid API for AI agents from api.aiskills402.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-01).

Returns a downloadable SKILL.md file containing a faithful text summarization skill that preserves all numbers, names, dates, and qualifiers from the source text

## Facts

- Endpoint: GET https://api.aiskills402.com/v1/skills/summarize/file?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/aiskills402-faithful-summary-skill-file-cca3edae
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dPZC93wGpE9CKCKfondZH

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability aiskills402-faithful-summary-skill-file-cca3edae
```

Example prompt: Buy and download the faithful summary SKILL.md file from aiskills402 — I want to add a summarization skill to my agent that keeps every number, name, and date exactly as written in the source text.

## When to prefer this

Choose this endpoint when you want to add a faithful summarization capability to an AI agent and need a ready-made, tested skill file in Agent Skills format rather than writing your own prompting instructions. Particularly useful when accuracy of facts, numbers, names, and dates in the summary is critical and hallucination must be avoided. Prefer over building custom summarization prompts when you want a one-time purchase with ongoing updates.

## Known failure modes

- Payment not received or x402 handshake fails — returns HTTP 402 with payment details
- Malformed request headers — returns 400 error
- Service temporarily unavailable — returns 5xx error

## How this service works

Faithful Summary: Writes a faithful summary of a text in the text's own language, using only what the text says, with every number, name and date kept exactly and every qualifier kept. Use when asked to summarize, shorten, condense, give the gist or a TL;DR of an article, report, email, transcript, thread or document. One-time purchase of the SKILL.md file (Agent Skills format), $0.03 USDC, yours forever incl. free re-downloads and new versions. Tested with a strong and a weak model; the card t…

## Output

A SKILL.md file in Agent Skills format containing a faithful text summarization skill definition. The file is a one-time purchase ($0.03 USDC) that includes free re-downloads and access to future versions. The skill is tested on both strong and weak models and instructs an agent to summarize text in its original language while keeping all numbers, names, dates, and qualifiers exactly as they appear.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/aiskills402-faithful-summary-skill-file-cca3edae/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.aiskills402.com](https://www.zero.xyz/host/api.aiskills402.com/llms.txt)