A file conversion API that changes documents and other files between formats. It also provides tools for creating PDFs, removing sensitive information, preparing files for accessibility, and preparing them for printing.

It helps applications convert documents, images, audio, video, and structured data, and automate PDF generation, redaction, accessibility, and print preparation.

It removes the need to build and maintain separate format-conversion and document-processing systems.

convert-api — Skill for Claude Code and Codex by withoneai

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add withoneai/one-agent-plugin --skill convert-api

Clone the repo

git clone --depth 1 https://github.com/withoneai/one-agent-plugin

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/withoneai/one-agent-plugin/convert-api/github.svg)](https://agentmods.dev/skills/withoneai/one-agent-plugin/convert-api)

Your own site

<a href="https://agentmods.dev/skills/withoneai/one-agent-plugin/convert-api"><img src="https://agentmods.dev/badge/skills/withoneai/one-agent-plugin/convert-api/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/withoneai/one-agent-plugin/convert-api"><img src="https://agentmods.dev/badge/skills/withoneai/one-agent-plugin/convert-api.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 123 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 6,304 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00123	$0.06304
Opus 5	$0.00062	$0.03152
Sonnet 5	$0.00025	$0.01261
Haiku 4.5	$0.00012	$0.00630

Measured 5d ago against content hash 580b0c4dcb0e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

convert-api scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

platforms/one-convert-api/skills/convert-api/SKILL.md · 447 lines

How it starts

The opening of the file, as written. The whole thing — 447 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ConvertAPI through One

ConvertAPI is a file conversion API platform that enables developers and businesses to convert documents and other files across 200+ formats, with REST API access, SDKs, no-code integrations, and tools for PDF generation, redaction, accessibility, and print preparation.

One exposes ConvertAPI through four MCP tools. The table below carries real action ids from One's knowledge base, so for a common operation you can skip search and go straight to reading the action's parameters.

How to run an action

Find the action in the table below, or call search_one_platform_actions with platform convert-api if it is not listed.
Call get_one_action_knowledge with the action id. Do this every time, including for actions in this table. The table gives you the id, not the parameters.
Call execute_one_action with parameters copied from that knowledge.

Never guess a parameter name, a body field, or an enum value. The knowledge has the real schema, and a guessed field is either a 400 or a silent write of the wrong thing.

Before you start

Call list_one_integrations once and confirm ConvertAPI is connected. If it is missing, the user has not connected it: say so and point them at https://app.withone.ai rather than reaching for raw HTTP.

Each connection carries an access field. If it reports {"policy": "methods", "methods": ["GET"]} the agent is read-only here, so plan a read-only answer instead of attempting a write that will be refused.

Before a write

Creates, updates, deletes and sends land on a real ConvertAPI account and cannot be recalled. State the action and the specific target in one line before the first write in a task, and let the user stop you. Reads need no confirmation.

Actions

Convert

Action	Method	Path	Action id
Docx to Odt Using Convert	POST	`/convert/docx/to/odt`	`conn_mod_def::GMa8d20iFog::jFicIjUASZKgUFYONCIyTg`
Dotx to Jpg Using Convert	POST	`/convert/dotx/to/jpg`	`conn_mod_def::GMa8eFvj7fA::HqHbQFb0SMC8DPQqirXhFQ`
Dwf to Png Using Convert	POST	`/convert/dwf/to/png`	`conn_mod_def::GMa8eNePebA::MdUnvszqSSWPeo9M2e9E5A`
Eps to Tiff Using Convert	POST	`/convert/eps/to/tiff`	`conn_mod_def::GMa8e72_mPA::VYoRu37VSgywR60q4diR4g`
EPUB to PDF Using Convert	POST	`/convert/epub/to/pdf`	`conn_mod_def::GMa8fEiKgwA::9PzNDhVCQkyqqfPWDshbzA`
HEIC to PNG Using Convert	POST	`/convert/heic/to/png`	`conn_mod_def::GMa8fYYxEcg::GtpdLVStRTiPvO4kR7OS9w`
Ico to Svg Using Convert	POST	`/convert/ico/to/svg`	`conn_mod_def::GMa8f2L53Ng::G6KVHGpYRtmJDFuXD9bJCQ`
JPG to PNG Using Convert	POST	`/convert/jpg/to/png`	`conn_mod_def::GMa8gFoZeTg::C2abc9aNRNa7v3aX4vy79g`
Mobi to Tiff Using Convert	POST	`/convert/mobi/to/tiff`	`conn_mod_def::GMa8gjH-rgg::wm2rRpJORo-uSVqRRF4TsQ`
Mobi to Webp Using Convert	POST	`/convert/mobi/to/webp`	`conn_mod_def::GMa8gjMEQuA::02FwcYSMTLWGJMGS01y6AQ`
Odp to Png Using Convert	POST	`/convert/odp/to/png`	`conn_mod_def::GMa8g7VM21g::OQfIYrCATfaJTWiSRBND4Q`
Xlsx to Jpg Using Convert	POST	`/convert/xlsx/to/jpg`	`conn_mod_def::GMa8lHw8-gg::oHE9bNI2RB-MPWlzBaQtlw`

Read the full file on GitHub · 447 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

5d ago First seen · 447 lines · 0 tokens per session scan A 580b0c4dcb0e

Subscribe to this mod's changes

convert-api is a skill published in the GitHub repository withoneai/one-agent-plugin (1 stars, last pushed 19d ago), licensed MIT. It adds 123 tokens to every session and 6,304 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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