Show me AI coding agents with an API

13 AI coding agents with an API. 8 have a free plan. 4 are still in alpha or beta. Newest check: 15 Nov 2026.

59 of 99 agents were checked against the vendor's own page in the last 30 days.

AgentWhere it runsPriceMaturityChecked
LetterCoding agent that turns site and market signals into pull requestsCloud · APIPer tokenBeta15 Nov
Muse CodeMeta's multi-agent CLI that plans, codes, and validates changes across repos.Your machine · API$5/moBeta15 Nov
OpenAI CodexClones your repo, writes the code, opens the pull request. No keyboard required.Cloud · Your machine · APIFree planEnterprise6 Nov
OpenHandsOpen-source AI agent that plans, codes, tests, and ships pull requestsCloud · Your machine · APIFree planAvailable3 Nov
PromptlessAI teammate that drafts doc updates as pull requests when you ship.Cloud · Your machine · API$500/moAvailable24 Oct
QualGentAutonomous QA agent that tests iOS and Android apps like a human.Cloud · API--Available24 Oct
OpenCodeOpen source coding agent that works with any model, in terminal, desktop or IDE.Your machine · APIFree planAvailable18 Oct
Antigravity CLIGoogle's terminal agent for multi-file coding, subagents and browser checks.Cloud · Your machine · APIFree planAvailable27 Sep
ClineOpen source AI coding agent that shows every edit before it runs.Your machine · APIFree planAvailable27 Sep
Gemini CLIGoogle's open-source terminal agent, retired for individuals on June 18, 2026.Your machine · APIUsage-basedEnterprise27 Sep
DextoOpen-source agent framework with a free coding agent and 50+ swappable LLMs.Cloud · Your machine · APIFreeBeta1 Sep
MutAgent9 AI agents that build, test, and fix your AI in production.Cloud · Your machine · APIFree planBeta26 Aug
JulesGoogle's async coding agent that clones your repo and opens a pull request while you work on something else.Cloud · APIFree planAvailable25 Oct

Where it runs

A person checks every record against the vendor's own page. Rankings cannot be bought. How Hokai checks records. Not sure what you need? Describe the job to Smart Match and get three picks with reasons.