# State of agent traffic: October 2026

> What visits a developer-tools site, counted first-hand: 2026-09-28 to 2026-10-09, 12 days, updated nightly. Every request to overwing.ai classified against the Atlas registry, identity claims checked against what operators publish, no addresses.

## Findings

1. Over 12 days, 2026-09-28 to 2026-10-09, overwing.ai answered 56,994 requests from 622 distinct User-Agent strings, about 543 distinct clients a day.
2. Registered agents made 11.6% of requests. Software that names itself but is in no registry made 54.3%, generic HTTP libraries 21.6%, and browsers 7.6%.
3. 52 registered agents were seen. The ten busiest made 85.3% of agent requests; the busiest was Agent402 (Agent402 (agent402.tools)) with 2,940 requests on 12 of 12 days.
4. By purpose, Search / retrieval index 67.4%, Training / bulk crawl 17.6%, Other / undocumented 14% of agent requests.
5. 4,066 agent requests claimed an identity that could be checked against the operator's published IP ranges, reverse DNS or signing keys: 246 (6.1%) were confirmed, 2 contradicted the claim, and the rest could not be confirmed either way.
6. Among discovery files, automated clients asked most for the MCP endpoint (14,812), x402 payment terms (14,352), .well-known discovery files (8,392), the OpenAPI document (2,461).
7. Of 19,218 requests with a recorded answer, 16% were refused with a client error other than a payment request.
8. In the last seven days 464 distinct User-Agent strings were seen; 233 (50.2%) had not appeared earlier in the period. The registry holds 312 published agents, with 10 self-named strings waiting for review.
9. On the readiness panel, 39 developer-tool sites were checked in the latest week: the median score was 67 of 100, 92.3% publish llms.txt, 33.3% have a hosted MCP endpoint that answers, and 0 score 90 or more.

## Who sends the requests

| Kind of client | Requests | Share | Distinct User-Agents |
|---|---|---|---|
| Registered agents | 6,618 | 11.6% | 74 |
| Software that names itself but is not in the registry | 30,939 | 54.3% | 481 |
| Generic HTTP libraries | 12,295 | 21.6% | 48 |
| Browsers | 4,305 | 7.6% | 1 |
| Overwing SDKs and tools | 1,605 | 2.8% | 17 |
| Requests with no User-Agent | 1,232 | 2.2% | 1 |

## The busiest registered agents

| Agent | Operator | Purpose | Days | Requests | Share of agent requests | Identity |
|---|---|---|---|---|---|---|
| Agent402 | Agent402 (agent402.tools) | Search / retrieval index | 12 | 2,940 | 44.4% | 0 of 1853 verified |
| BrickBlueBot | brick.blue | Search / retrieval index | 11 | 689 | 10.4% | 0 of 467 verified |
| Meta-ExternalAgent | Meta | Training / bulk crawl | 7 | 606 | 9.2% | 0 of 354 verified |
| ClaudeBot | Anthropic | Training / bulk crawl | 12 | 325 | 4.9% | 0 of 195 verified |
| AgenstryBot | Agenstry | Search / retrieval index | 11 | 318 | 4.8% | 0 of 198 verified |
| forum-labs-trust-prober | Forum Labs | Other / undocumented | 12 | 228 | 3.4% | 0 of 81 verified |
| GolemreachTrustBot | Golemreach | Other / undocumented | 10 | 152 | 2.3% | 0 of 112 verified |
| x402watch | x402watch (x402watch.vercel.app) | Other / undocumented | 12 | 130 | 2% | 0 of 91 verified |
| Amazonbot | Amazon | Training / bulk crawl | 11 | 130 | 2% | 80 of 80 verified |
| agentprobe | agentprobe.org | Other / undocumented | 11 | 128 | 1.9% | 0 of 82 verified |

## By purpose

| Purpose | Agents | Requests | Share |
|---|---|---|---|
| Search / retrieval index | 20 | 4,461 | 67.4% |
| Training / bulk crawl | 7 | 1,168 | 17.6% |
| Other / undocumented | 16 | 925 | 14% |
| User-triggered fetcher | 5 | 33 | 0.5% |
| Autonomous / browser agent | 3 | 23 | 0.3% |
| Coding agent | 1 | 8 | 0.1% |

## What automated clients asked for

| Asked for | Requests |
|---|---|
| the MCP endpoint | 14,812 |
| x402 payment terms | 14,352 |
| .well-known discovery files | 8,392 |
| the REST API | 7,276 |
| the OpenAPI document | 2,461 |
| HTML pages | 2,457 |
| the A2A endpoint | 1,274 |
| robots.txt | 784 |
| llms.txt | 577 |
| the sitemap | 199 |
| markdown versions of pages | 105 |

## How ready developer tools are

Median score 67 of 100 across 39 of 39 panel sites checked this week; 92.3% publish llms.txt; 33.3% have a hosted MCP endpoint that answers; 0 score 90 or more. Week by week: https://overwing.ai/atlas/readiness

## Method

Every request to overwing.ai is classified against the Atlas registry and rolled up nightly by day and User-Agent, with addresses hashed and no request bodies kept. Identity is checked against IP ranges, reverse DNS and signing keys the operator publishes. Registered agents are counted by registry agent; everything else by User-Agent string. One site, so the shares describe a developer-tools site that invites agents, not the web. The readiness panel is the same Beacon check run weekly on a fixed list of developer-tool sites.

Cite as: Overwing Atlas, State of agent traffic, October 2026, https://overwing.ai/atlas/traffic, data to 2026-10-09. JSON: https://overwing.ai/api/v1/atlas/traffic. Daily rows: https://overwing.ai/api/v1/atlas/sightings. Registry: https://overwing.ai/atlas